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City of Buckeye
2025 Integrated Water
Master Plan
Final / November 2025
City of Buckeye
2025 Integrated Water Master Plan
November 2025 / FINAL
Digitally signed by Richard A, Humpherys
Contact Info: Carollo Engineers, Inc.
Date: 2025.12.16 11:03:43-07'00'
Digitally signed by Eric J. McLeskey
Contact Info: Carollo Engineers, Inc.
Date: 2025.12.16 11:14:27-07'00'
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
i
Contents
CHAPTER 1
INTRODUCTION
1.1
Overview
1-1
1.2
Previous Studies
1-1
1.2.1
2017 Integrated Water Master Plan
1-1
1.2.2
2020 Water Resources Master Plan
1-2
1.3
IWMP Purpose
1-2
1.4
Report Organization
1-4
1.4.1
Chapter 2: Planning Framework Summary
1-4
1.4.2
Chapter 3: Water Resources Summary
1-5
1.4.3
Chapter 4: Water Master Plan Summary
1-5
1.4.4
Chapter 5: Wastewater Master Plan Summary
1-5
1.4.5
Chapter 6: Reclaimed Water Master Plan Summary
1-6
CHAPTER 2
PLANNING FRAMEWORK
2.1
Introduction
2-1
2.2
Water and Wastewater Service Area
2-2
2.2.1
Planning Area
2-2
2.2.2
Water Planning Areas
2-4
2.2.3
Water and Wastewater Service Areas
2-4
2.2.4
Developments
2-5
2.2.5
Water Resource Classifications
2-5
2.3
Land Use
2-9
2.3.1
Land Use Classifications
2-9
2.3.2
Unit Water Demands
2-11
2.3.3
Future Development
2-11
2.4
Population Estimates
2-17
2.5
Historical Water Flows
2-17
2.5.1
Seasonal Peaking Factors
2-18
2.6
Water Demand Projections
2-18
2.6.1
Demand Projection Assumptions
2-19
2.6.2
Water Demands
2-19
2.7
Wastewater Flow Projections
2-21
2.7.1
Wastewater Flow Factors
2-21
2.7.2
Wastewater Flows
2-21
2.8
Reclaimed Water Flow Projections
2-22
2.8.1
Reclaimed Water Flow Projection Assumptions
2-22
2.8.2
Reclaimed Water Flows
2-22
2.9
Flow Projections Summary
2-23
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
ii
CHAPTER 3
WATER RESOURCES
3.1
Introduction
3-1
3.2
Regulatory Framework
3-1
3.2.1
Groundwater Code: 1980 Groundwater Management Act
3-2
3.2.2
Central Arizona Groundwater Replenishment District
3-5
3.2.3
Recharge, Underground Storage and Recovery, and Replenishment
3-6
3.2.4
Central Arizona Project Subcontract
3-7
3.2.5
Arizona Well Spacing and Well Impact Rules
3-7
3.2.6
Water Reuse Regulations
3-7
3.2.7
Buckeye Water Conservation and Drainage District
3-9
3.2.8
Roosevelt Irrigation District
3-10
3.2.9
Ag-to-Urban Program
3-10
3.3
Water Resources Portfolio
3-10
3.3.1
Groundwater
3-10
3.3.2
Central Arizona Project
3-11
3.3.3
Reclaimed Water
3-13
3.3.4
Water Portfolio Summary
3-14
3.4
Future Water Supply Opportunities
3-14
3.4.1
Harquahala Groundwater Basin
3-14
3.4.2
Reclaimed Water
3-15
3.4.3
Roosevelt Irrigation District
3-16
3.4.4
Buckeye Water Conservation and Drainage District
3-16
3.4.5
Buckeye Waterlogged Area
3-16
3.4.6
Priority 3 or 4 Colorado River Contract Water
3-17
3.4.7
Verde River Sediment Mitigation Project
3-18
3.4.8
Long Term Storage Credits
3-18
3.4.9
Colorado River Indian Tribes Water
3-18
3.4.10 Partnerships
3-18
3.4.11 Regional Projects
3-19
3.5
Designation of Assured Water Supply
3-19
3.5.1
WPA 1
3-22
3.5.2
WPA 2
3-24
3.5.3
WPA 4A and 4B
3-25
3.6
Recommendations
3-28
CHAPTER 4
WATER MASTER PLAN
4.1
Introduction
4-1
4.2
Water System Overview
4-2
4.2.1
WPA Water Infrastructure Development Strategy
4-4
4.3
Water System Performance Criteria
4-7
4.3.1
Demand Peaking Factors
4-7
4.3.2
Wells
4-7
4.3.3
Pump Stations
4-7
4.3.4
Water Storage
4-8
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
iii
4.3.5
Transmission/Distribution Mains
4-8
4.3.6
Pressures
4-9
4.3.7
Fire Flows
4-9
4.3.8
Performance Criteria Summary
4-10
4.4
Hydraulic Model
4-10
4.5
Master Plan by Water Service Area
4-11
4.5.1
Sun City Festival
4-11
4.5.2
Floreo at Teravalis
4-20
4.5.3
Tartesso
4-26
4.5.4
Central Buckeye
4-36
4.6
Conclusion and Recommendations
4-50
CHAPTER 5
WASTEWATER MASTER PLAN
5.1
Introduction
5-1
5.2
Wastewater System Overview
5-2
5.2.1
Wastewater Infrastructure Development Strategy
5-4
5.3
Wastewater System Performance Criteria
5-5
5.3.1
Gravity Sewer Main Capacity
5-5
5.3.2
Lift Station Capacity
5-6
5.3.3
Force Mains
5-7
5.3.4
Water Reclamation Facilities
5-7
5.3.5
Peaking Factors
5-7
5.4
Hydraulic Model
5-8
5.5
Master Plan by Wastewater Service Area
5-8
5.5.1
Sun City Festival
5-8
5.5.2
Floreo at Teravalis
5-17
5.5.3
Tartesso
5-23
5.5.4
Central Buckeye
5-31
5.6
Conclusion and Recommendations
5-56
CHAPTER 6
RECLAIMED WATER MASTER PLAN
6.1
Introduction
6-1
6.2
Reclaimed System Overview
6-1
6.2.1
Reclaimed Infrastructure Development Strategy
6-2
6.3
Reclaimed Water Infrastructure Overview
6-3
6.3.1
Reclaimed Water Management Strategies
6-3
6.3.2
Reclaimed Water System Performance Criteria
6-4
6.4
Master Plan by Reclaimed Service Area
6-5
6.4.1
Sun City Festival
6-5
6.4.2
Floreo
6-11
6.4.3
Tartesso
6-15
6.4.4
Central
6-21
6.5
Conclusion and Recommendations
6-32
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
iv
Appendices
APPENDIX 2A
MASTER PLANNED DEVELOPMENTS FLOWS
APPENDIX 4A
WATER DISTRIBUTION SYSTEM MODEL RESULTS
APPENDIX 5A
WASTEWATER COLLECTION SYSTEM MODEL RESULTS
APPENDIX 5B
WASTEWATER COLLECTION SYSTEM CAPACITY AT BUILDOUT
APPENDIX 5C
WASTEWATER COLLECTION SYSTEM DEVELOPMENT FLOWS
Tables
Table 2.1
General Plan Land Use Categories Mapped to City of Buckeye Land Use
Categories for Water System Design
2-9
Table 2.2
Unit Water Demands by Land Use Category
2-11
Table 2.3
Population Density
2-17
Table 2.4
Population Projection Table
2-17
Table 2.5
2022 Water Production by Water Delivery Area
2-17
Table 2.6
Water Demand Peak Flow Multipliers
2-18
Table 2.7
Water Demand Projections for Future CAWS and Commercial/Industrial Areas
by Land Use Category (mgd)
2-19
Table 2.8
Water Demand Projections for Future CAWS and Commercial/Industrial Areas
by Land Use Category (AFY)
2-20
Table 2.9
Water Demand Projections by WPA (mgd)
2-20
Table 2.10
Water Demand Projections by WPA (AFY)
2-20
Table 2.11
Water Demand Projections with Water Conservation by WPA (mgd)
2-21
Table 2.12
Water Demand Projections with Water Conservation by WPA (AFY)
2-21
Table 2.13
Wastewater Flow Projections by WPA (mgd)
2-22
Table 2.14
Wastewater Flow Projections by WPA (AFY)
2-22
Table 2.15
Reclaimed Water Flow Projections by WPA (mgd)
2-23
Table 2.16
Reclaimed Water Flow Projections by WPA (AFY)
2-23
Table 2.17
Buildout Water Flows by WPAs (mgd)
2-24
Table 2.18
Buildout Water Flows by WPAs (AFY)
2-24
Table 2.19
Buildout Water Demand by Water Resource Category for WPAs
2-24
Table 2.20
Buildout Water Demand by Water Resource Category for WPAs (AFY)
2-25
Table 3.1
Arizona Regulated Wastewater Treatment Requirements for BADCT
3-8
Table 3.2
Arizona Regulated Surface Water Quality Parameters by Water Designation
3-8
Table 3.3
ADEQ Class A+ Reclaimed Water Quality Requirements
3-9
Table 3.4
Central Arizona Project DCP Reductions
3-12
Table 3.5
Buckeye Water Portfolio
3-14
Table 3.6
WPA 1 Water Resources and Demand
3-22
Table 3.7
WPA 1 Growth Potential
3-23
Table 3.8
WPA 2 Water Resources and Demand
3-24
Table 3.9
WPA 2 Growth Potential
3-25
Table 3.10
WPAs 4A and 4B Water Resources and Demand
3-26
Table 3.11
WPAs 4A and 4B Growth Potential
3-27
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
v
Table 3.12
WPAs Growth Potential – Water Demand
3-27
Table 3.13
WPAs Growth Potential – Potential Lots
3-27
Table 4.1
City of Buckeye Pressure Zone Boundary Elevations
4-9
Table 4.2
Performance Criteria Summary
4-10
Table 4.3
Sun City Festival Wells
4-11
Table 4.4
Sun City Festival Water Mains
4-13
Table 4.5
Sun City Festival Demand Projections
4-13
Table 4.6
Sun City Festival Water Supply Evaluation
4-15
Table 4.7
Sun City Festival Pumping Capacity Evaluation
4-16
Table 4.8
Sun City Festival Storage Capacity Evaluation
4-16
Table 4.9
Sun City Festival Planned Infrastructure Projects
4-19
Table 4.10
Floreo Demand Projections
4-20
Table 4.11
Floreo Water Supply Evaluation
4-22
Table 4.12
Floreo Water Pumping Capacity Evaluation
4-22
Table 4.13
Floreo Water Storage Evaluation
4-23
Table 4.14
Floreo Recommended Infrastructure Projects
4-25
Table 4.15
Tartesso Wells
4-26
Table 4.16
Tartesso Water Mains
4-28
Table 4.17
Tartesso Demand Projections
4-30
Table 4.18
Tartesso Water Supply Evaluation
4-30
Table 4.19
Tartesso Water Pumping Capacity Evaluation
4-31
Table 4.20
Tartesso Water Storage Evaluation
4-31
Table 4.21
Tartesso Recommended Infrastructure Projects
4-35
Table 4.22
Central Buckeye Wells
4-36
Table 4.23
Central Buckeye Pump Stations
4-37
Table 4.24
Central Buckeye Water Storage
4-38
Table 4.25
Central Buckeye Water Mains
4-38
Table 4.26
Central Buckeye Demand Projections
4-39
Table 4.27
Central Buckeye Water Supply Evaluation
4-42
Table 4.28
Cipriani Water Supply Evaluation
4-43
Table 4.29
Central Buckeye Water Pumping Capacity Evaluation
4-44
Table 4.30
Cipriani Water Pumping Capacity Evaluation
4-44
Table 4.31
Central Buckeye Water Storage Evaluation
4-45
Table 4.32
Cipriani Water Storage Evaluation
4-46
Table 4.33
Central Buckeye Recommended Infrastructure Projects
4-48
Table 5.1
Gravity Sewer Main Minimum Slope Requirements
5-6
Table 5.2
Maximum Manhole Spacing
5-6
Table 5.3
Population Peaking Factor
5-7
Table 5.4
Sun City Festival Wastewater Collection System Gravity Sewer Main Summary
5-10
Table 5.5
Sun City Festival Sewer Pipe Materials
5-10
Table 5.6
Sun City Festival WRF ADMM Flow Projections
5-14
Table 5.7
Sun City Festival Wastewater Infrastructure Projects
5-16
Table 5.8
Floreo WRF ADMM Flow Projections
5-19
Table 5.9
Floreo Wastewater Infrastructure Projects
5-22
Table 5.10
Tartesso Wastewater Collection System Gravity Sewer Main Summary
5-25
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
vi
Table 5.11
Tartesso WRF ADMM Flow Projections
5-27
Table 5.12
Tartesso Wastewater Infrastructure Projects
5-30
Table 5.13
Central Buckeye Gravity Sewer Main Summary
5-31
Table 5.14
Central Buckeye Lift Station Facilities
5-34
Table 5.15
Central Buckeye Lift Station Capacity Evaluation
5-43
Table 5.16
Central Buckeye WRFs ADMM Flow Projections
5-44
Table 5.17
Central Buckeye Wastewater Infrastructure Projects
5-51
Table 6.1
Sun City Festival Reclaimed Water Pipeline Summary
6-5
Table 6.2
Sun City Festival Historical Reclaimed Water Produced
6-7
Table 6.3
Sun City Festival Projected Reclaimed Water Flow
6-7
Table 6.4
Sun City Festival Projected Reclaimed Water Recharge Capacity Requirements
6-8
Table 6.5
Sun City Festival Reclaimed Infrastructure Projects
6-9
Table 6.6
Floreo Projected Reclaimed Water Production
6-11
Table 6.7
Floreo Projected Reclaimed Water Capacity Requirements
6-11
Table 6.8
Floreo Reclaimed Infrastructure Projects
6-13
Table 6.9
Tartesso Historical Annual Flow
6-15
Table 6.10
Tartesso Projected Reclaimed Water Flow
6-15
Table 6.11
Tartesso Projected Reclaimed Water Capacity Requirements
6-17
Table 6.12
Tartesso Reclaimed Infrastructure Projects
6-19
Table 6.13
Central Buckeye Reclaimed Water Pipeline Summary
6-22
Table 6.14
Central Buckeye Historical Annual Flow
6-24
Table 6.15
Central Buckeye Projected Reclaimed Water Flow
6-24
Table 6.16
East Central Buckeye Projected Reclaimed Water Flows
6-27
Table 6.17
West Central Buckeye Projected Reclaimed Water Capacity Requirements
6-28
Table 6.18
Central Buckeye Reclaimed Infrastructure Projects
6-30
Figures
Figure 1.1
Water Planning Areas and Development Planning Periods
1-3
Figure 2.1
City Planning Area Boundary and Water Planning Areas
2-3
Figure 2.2
City of Buckeye Developable Areas that could be Provided Water and
Wastewater Service
2-6
Figure 2.3
The City of Buckeye Master Planned Communities and Other Planned
Developments
2-7
Figure 2.4
City of Buckeye Land Areas by Water Resource Classification
2-8
Figure 2.5
Land Use Categories for Developable Lands Used to Predict Water Usage
2-10
Figure 2.6
Historical and Projected Population Growth
2-12
Figure 2.7
2025 Estimate of Percentage Developed for Land Areas the City Classified
as Developable
2-13
Figure 2.8
2030 Estimate of Percentage Developed for Land Areas the City Classified
as Developable
2-14
Figure 2.9
2035 Estimate of Percentage Developed for Land Areas the City Classified
as Developable
2-15
Figure 2.10
2040 Estimate of Percentage Developed for Land Areas the City Classified
as Developable
2-16
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
vii
Figure 2.11
Normalized Monthly Peaking Factors
2-18
Figure 3.1
Water Resources Service Area
3-21
Figure 4.1
Water Planning Areas and Development Planning Periods
4-3
Figure 4.2
Sun City Festival 2024 Water Distribution System
4-12
Figure 4.3
Sun City Festival Development Areas
4-14
Figure 4.4
Sun City Festival Recommended Water Distribution Infrastructure
4-18
Figure 4.5
Floreo Development Areas
4-21
Figure 4.6
Floreo Recommended Water Distribution Infrastructure
4-24
Figure 4.7
Tartesso 2024 Water Distribution System
4-27
Figure 4.8
Tartesso Development Areas
4-29
Figure 4.9
Tartesso Recommended Pressure Reducing Valve Locations
4-33
Figure 4.10
Tartesso Water Recommended Distribution Infrastructure
4-34
Figure 4.11
Central Buckeye 2024 Water Distribution System
4-40
Figure 4.12
Central Buckeye Development Areas
4-41
Figure 4.13
Central Buckeye Recommended Water Distribution Infrastructure
4-47
Figure 5.1
Water Planning Areas and Development Planning Periods
5-3
Figure 5.2
Sun City Festival 2024 Wastewater Infrastructure
5-9
Figure 5.3
Sun City Festival Development Areas
5-11
Figure 5.4
Sun City Festival Existing Pipeline Deficiencies
5-13
Figure 5.5
Sun City Festival Wastewater Treatment Capacity Evaluation through 2040
5-14
Figure 5.6
Sun City Festival Recommended Infrastructure Improvements through 2040
5-15
Figure 5.7
Floreo Development Areas
5-18
Figure 5.8
Floreo Wastewater Treatment Capacity Evaluation through 2040
5-20
Figure 5.9
Floreo Recommended Infrastructure Improvements through 2040
5-21
Figure 5.10
Tartesso 2024 Wastewater Infrastructure
5-24
Figure 5.11
Tartesso Development Areas
5-26
Figure 5.12
Tartesso Wastewater Treatment Capacity Evaluation through 2040
5-28
Figure 5.13
Tartesso Recommended Infrastructure Improvements through 2040
5-29
Figure 5.14
Central Buckeye Planned Wastewater Collection Basins
5-32
Figure 5.15
Central Buckeye 2024 Wastewater Infrastructure
5-33
Figure 5.16
Central Buckeye Option 1 Future Infrastructure East of SR 85
5-36
Figure 5.17
Central Buckeye Option 2 Future Infrastructure East of SR 85
5-37
Figure 5.18
Central Buckeye Future Infrastructure West of SR 85
5-39
Figure 5.19
Central Buckeye Existing Pipeline Deficiencies
5-41
Figure 5.20
Central Buckeye Wastewater Treatment Capacity Evaluation through 2040
(Option 1 East)
5-45
Figure 5.21
Central Buckeye Wastewater Treatment Capacity Evaluation through 2040
(Option 2 East)
5-46
Figure 5.22
Grand View WRF Wastewater Treatment Capacity Evaluation through 2040
(Option 2 East)
5-47
Figure 5.23
Sundance WRF Wastewater Treatment Capacity Evaluation through 2040
5-47
Figure 5.24
WRF 3 Wastewater Treatment Capacity Evaluation through 2040
5-48
Figure 5.25
Cipriani Package Plant Wastewater Treatment Capacity Evaluation through
2040
5-49
Figure 5.26
Central Buckeye Recommended Infrastructure Improvements
5-50
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
viii
Figure 6.1
Sun City Festival 2024 Reclaimed Water System
6-6
Figure 6.2
Sun City Festival Reclaimed Water Capacity Evaluation through 2040
6-8
Figure 6.3
Sun City Festival Recommended Reclaimed Water System Infrastructure
6-10
Figure 6.4
Floreo Reclaimed Water Capacity Evaluation through 2040
6-12
Figure 6.5
Floreo Recommended Reclaimed Water System Infrastructure
6-14
Figure 6.6
Tartesso 2024 Reclaimed Water System
6-16
Figure 6.7
Tartesso Reclaimed Water Capacity Evaluation through 2040
6-18
Figure 6.8
Tartesso Recommended Reclaimed Water System Infrastructure
6-20
Figure 6.9
Central Buckeye 2024 Reclaimed Water Infrastructure
6-23
Figure 6.10
Central Buckeye Planned Wastewater Collection Basins
6-25
Figure 6.11
East Central Buckeye Reclaimed Water Recharge Facility Capacity through
2040
6-27
Figure 6.12
West Central Buckeye Reclaimed Water Recharge Capacity through 2040
6-28
Figure 6.13
Central Buckeye Option 1 Recommended Reclaimed Water System
Infrastructure
6-29
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
ix
Abbreviations
A2U
Ag-to-Urban
A&Ww
aquatic and wildlife, warm water
A.A.C.
Arizona Administrative Code
A.R.S.
Arizona Revised Statute
AADF
average annual daily flow
AAWS
Analysis of Assured Water Supply
ADAWS
Alternative Designation of Assured Water Supply
ADD
average day demands
ADEQ
Arizona Department of Environmental Quality
ADMM
average day maximum monthly
ADWR
Arizona Department of Water Resources
AF
acre-feet
AFY
acre-feet per year
Agl
agricultural irrigation
AgL
agricultural livestock watering
AMA
Active Management Area
AOHI
area of hydrologic impact
APS
Arizona Public Service
AS&R
annual storage and recovery
ASR
aquifer storage and recovery
AWP
advanced water purification
AWS
Assured Water Supply
AZPDES
Arizona Pollutant Discharge Elimination System
BADCT
Best Available Demonstrated Control Technology
BOD5
5-day biochemical oxygen demand
BPS
booster pump station
BWCDD
Buckeye Water Conservation and Drainage District
BWLA
Buckeye Waterlogged Area
CAGRD
Central Arizona Groundwater Replenishment District
CAP
Central Arizona Project
capita/DU
capita per dwelling unit
CAWCD
Central Arizona Water Conservation District
CAWS
Certificate of Assured Water Supply
CBOD5
5-day carbonaceous biochemical oxygen demand
CDP
Drought Contingency Plan
CFU
colony forming unit
CIP
Capital Improvement Program
City
City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
x
CRIT
Colorado River Indian Tribes
d
depth of flow
D
diameter (pipe)
DAWS
Designation of Assured Water Supply
DOI
Department of the Interior
DPR
direct potable reuse
DU/ac
dwelling units per acre
E. coli
Escherichia coli
EC
extinguishment credit
EDS
Engineering Design Standards
FBC
full-body contact
Floreo
Floreo at Teravalis
fps
feet per second
ft/ft
foot per foot
GIS
geographic information system
GMA
1980 Groundwater Management Act
gpd/ac
gallons per day per acre
gpm
gallons per minute
GSF
groundwater savings facility
GST
ground storage tank
HGL
hydraulic grade line
I-10
Interstate-10
ID
identification
IGFR
irrigation grandfathered rights
INA
Irrigation Non-expansion Area
IPR
indirect potable reuse
IWMP
Integrated Water Master Plan
LTSC
long-term storage credit
M&I
municipal and industrial
MBR
membrane bioreactor
MC
Maricopa County
MCL
maximum contaminant level
MDD
maximum day demand
MG
million gallons
mg/L
milligrams per liter
mgd
million gallons per day
mL
milliliter
MWD
Maricopa Water District
NCS
new conservation space
NIA
Non-Indian Agriculture
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
xi
No.
number
NPR
non-potable reuse
NTU
nephelometric turbidity unit
PF
peaking factor
pH
potential of hydrogen
PHD
peak hour demand
ppm
parts per million
PRV
pressure reducing valve
psi
pounds per square inch
PVC
polyvinyl chloride
Qty
quantity
RID
Roosevelt Irrigation District
RO
reverse osmosis
RWMP
Reclaimed Water Master Plan
SR 85
State Route 85
SRP
Salt River Project
SSO
sanitary sewer overflow
SWTP
surface water treatment plant
TAG
Technical Advisory Group
TBD
to be determined
TDS
total dissolved solids
TOC
total organic carbon
TSS
total suspended solids
USBR
United States Bureau of Reclamation
USF
underground storage facility
UWSR
Underground Water Storage and Recovery
UWSRA
Underground Water Storage and Recovery Act
WMP
Water Master Plan
WPA
water planning area
WRF
water reclamation facility
WRMP
Water Resources Master Plan
WS
Water Storage
WTF
water treatment facility
WTP
water treatment plant
WWMP
Wastewater Master Plan
WWTF
wastewater treatment facility
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
1-1
CHAPTER 1 INTRODUCTION
1.1
Overview
The City of Buckeye (City) currently has a population of approximately 124,000 people and is one of the
fastest-growing cities in the United States. Located on the western edge of Maricopa County, Arizona, the
land is plentiful, and the cost of living is less than many other areas in Maricopa making Buckeye an
attractive City for development. To support this growth, the City continues to plan the water resources
and water-related infrastructure needed to serve this growing community.
The City initiated the 2025 Integrated Water Master Plan (IWMP) to proactively plan the water resources,
water, wastewater, and reclaimed water infrastructure needed to support existing customers and new
development. The IWMP does not replace engineering design in compliance with the Buckeye
Engineering Design Standards and code requirements.
1.2
Previous Studies
1.2.1
2017 Integrated Water Master Plan
The City completed the 2017 IWMP in 2017. The 2017 IWMP was for Central Buckeye only and
accomplished the following key objectives that set the groundwork for the water and wastewater
infrastructure required to help the City transition to a larger community. This planning provided the
groundwork for the current 2025 IWMP:
1. The City had recently acquired the Valencia private water company that served Central Buckeye. This
utility acquisition enabled the City to combine its water delivery system with the Valencia water
system and, thereby, create a stronger water delivery system. This combined system can be expanded
to more reliably serve Central Buckeye customers while making water quality improvements.
2. Water service areas were defined to include regional well treatment facilities served by multiple wells.
This strategy helped the City transition from infrastructure constructed to serve specific developments
with limited ability to expand to a more regional approach with fewer, larger facilities that are easier
to expand, operate, and maintain.
3. Wastewater collection basins were defined with wastewater treatment facilities (WWTFs) that serve
larger areas to move away from WWTFs planned to serve specific developments. This strategy helps
the City to ultimately have fewer WWTFs to operate and maintain.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
1-2
1.2.2
2020 Water Resources Master Plan
The City's 2020 Water Resources Master Plan (WRMP) provided the following recommendations:
1. Developed water policy recommendations to assist the City to maximize the benefit of existing water
resources and begin preparing for a Designation of Assured Water Supply (DAWS).
2. Identified the potential water resources that the City could acquire to build a water resources portfolio
that would make it possible to obtain a DAWS.
3. Developed concepts to fully utilize reclaimed water produced in the City and to use brackish
groundwater in the Buckeye waterlogged area.
1.3
IWMP Purpose
The 2025 IWMP builds upon previous reports to plan the water resources, water, wastewater, and
reclaimed water infrastructure needed for the City to grow through 2040. This is an integrated plan that
uses a common set of assumptions and flow projections upon which the entire plan is based. This
common set of assumptions includes a definition of the service area, growth rate, timing of development,
population growth, and flow projections. The 2025 IWMP considers the water cycle as water moves
through the water, wastewater, and reclaimed water systems so the volume of reclaimed water produced
is planned as an essential component of the City's water resource portfolio.
The 2025 IWMP study area for this IWMP is split into water planning areas (WPAs) 1, 2, 3, 4A, 4B, and 5.
These WPAs cover a total of 432 square miles. Within the WPAs, the IWMP identifies infrastructure for the
Central Buckeye, Tartesso, Sun City Festival, and Floreo at Teravalis developments. Figure 1.1 shows the
WPA coverage and the projected development areas through 2040 and beyond.
The 2025 IWMP establishes the road map for future infrastructure needs including treatment, conveyance,
storage, and pumping. Capital improvement projects will be established for growth areas across the City
for each of the planning periods in the 2025 IWMP (2030, 2035, 2040).
The 2025 IWMP occurs at a unique and critical time for the City because the Arizona Department of Water
Resources (ADWR) recently stopped recognizing groundwater allocations that have been reserved by
developments that have previously obtained an Analysis of Assured Water Supply (AAWS). This decision
will require the City to look elsewhere for the water supplies needed to grow beyond the Certificate/s of
Assured Water Supply (CAWS) already obtained by developments in Buckeye and developments on less
than six parcels. However, changes to the process of obtaining a DAWS are being proposed to assist cities
like Buckeye in obtaining a DAWS. This process is called an Alternative DAWS (ADAWS). The City is
currently in the process of obtaining an ADAWS for a portion of the City. Once approved, this change
could significantly change the location and timing of growth in the proposed ADAWS area.
In 2025, the Arizona Legislature passed a bill that allows water currently being used for agriculture to be
transferred to the City for municipal use if certain provisions are followed. This legislation is called the Ag
to Urban program. Over time, this legislation is expected to make significant changes to the City’s water
resources strategy in Central Buckeye that is not yet currently established.
ntersburg
74
Circle City
Wittmann
Morristown
10
10
Dixie
Allenville
Palo Verde
Buckeye
60
Liberty
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
WPA 1
WPA 3
WPA 5
WPA 2
WPA 4A
WPA 4B
Festival
Ranch
Festival
Ranch
Teravalis
Sun Valley
Villages
I and II
North Star
Ranch
Farallon
WTP 5
WTP 11
Westpark WTP
Floreo WTP
Tartesso WTP
Cipriani WTP
Sun City
Festival WTP
Grand
View WTP
Sundance
North Airport
Jackie A.
Meck WC
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1.5
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: City of Buckeye.
2025 BUCKEYE INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 1.1 Water Planning Areas and Development Planning Periods
CITY OF BUCKEYE
Legend
Water Planning Area
3
Q
Water Campus or WTP
3
Q
Proposed WTP
Projected Development Phase
Existing
2030
2035
2040
Post 2040
Master Planned
Community
Tartesso West
Elianto
West Phoenix Estates
Sun Valley South
Buckeye Canal
RID Canal
2025 INTEGRATED WATER MASTER PLAN
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Future infrastructure required under the DAWS water resource legal framework will have some
fundamental differences from the types of infrastructure that developers have constructed for the City
previously. The 2025 IWMP will address these changes. The changes to infrastructure planning include the
following:
1. Water infrastructure within a DAWS area should be interconnected so water supplies for a DAWS can
reach all customers in the DAWS area.
2. The City will own water resources instead of individual developments through a CAWS. Therefore,
water supply infrastructure will not be sized for specific developments. Instead, infrastructure will be
larger and serve more regional areas with multiple developments.
3. Surface water treatment facilities (WTFs) may be needed to treat surface water supplies that the City
acquires in the future. Although surface WTFs are not planned before 2040, the City will not rely
completely on wells for its water supply beyond 2040. Where appropriate, water infrastructure has
been planned for use with a future surface WTF near the Central Arizona Project (CAP) canal. WTFs
along the Roosevelt Irrigation District (RID) and Buckeye Water Conservation and Drainage
District (BWCDD) canals are beyond the planning periods of this master plan
4. Gravity sewer basins have been defined to identify the areas that each water reclamation facility (WRF)
will serve.
5. Infrastructure to fully use reclaimed water will be required so that the City can use all reclaimed water
as an important part of the City's water resources portfolio.
1.4
Report Organization
Chapters in this report are organized as follows:
Chapter 1: Introduction.
Chapter 2: Planning Framework.
Chapter 3: Water Resources.
Chapter 4: Water Master Plan.
Chapter 5: Wastewater Master Plan.
Chapter 6: Reclaimed Water Master Plan.
1.4.1
Chapter 2: Planning Framework Summary
The Planning Framework contains the key assumptions upon which the 2025 IWMP is based. First the
planning areas are defined, which include water planning areas and wastewater service areas, and the
service areas of Master Planned and other developments. The land areas are then classified according to
water resource availability.
Once the planning areas are defined, the information used to develop flow projections is presented. This
information includes land use classifications, unit flows, timing of future development, and historical flow
information. This information contains key assumptions used to establish flow projections.
Finally, the flow projections are presented in this chapter. Flows by water planning areas are calculated for
the 2030, 2035, and 2040 planning periods in the Master Plan for water, wastewater, and reclaimed water
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
1-5
systems. These flows are distributed spatially across the service area to be allocated in the hydraulic
models used to plan infrastructure.
1.4.2
Chapter 3: Water Resources Summary
The water resources chapter contains a summary of the water resource regulations that apply to the City,
including the 1980 Groundwater Management Act (GMA), and the regulations that apply to each of the
water supplies that the City might use, so that the plan is prepared in a way that complies with these
regulations.
The City's water resource portfolio is then described to provide a clear understanding of the water supply
constraints and opportunities that are available with the City's current portfolio. These water supplies
include groundwater, surface water, and reclaimed water.
Future water supply opportunities are identified for planning how to supply future demands, including the
Ag to Urban program.
A key outcome of the water resource evaluation is planning for a future DAWS in one or more areas of the
City. Water supply planning for Water Planning Areas 1, 2, 3, 4A, and 4B are contained in the water
resources chapter.
Recommended actions for the City to take to continue building a water resources portfolio are presented
in this chapter.
1.4.3
Chapter 4: Water Master Plan Summary
The Water Master Plan (WMP) is a water infrastructure plan for each of the water service areas: Sun City
Festival, Floreo at Teravais, Tartesso, and Central Buckeye. Water infrastructure capacity is evaluated
against the City's water performance criteria using a hydraulic model. Then future infrastructure is sized to
deliver projected water demand to planned development that satisfies the performance criteria. Water
supplies will be from groundwater through 2040. Where needed, treatment for arsenic is included, along
with the storage, pumping, and transmission mains.
The City will determine which projects will be funded by developers and which projects will be paid from
the City's capital improvement program (CIP). The timing of recommended infrastructure is established
with a trigger-based approach.
1.4.4
Chapter 5: Wastewater Master Plan Summary
The Wastewater Master Plan (WWMP) identifies the service areas for each of the City's planned WRFs so
that the future treatment capacity requirements can be established. Available capacities in gravity sewer
mains are evaluated for current 2025 flows using the City's performance criteria and the hydraulic model
to determine if the mains have capacity for additional development. Gravity sewers, lift stations, and force
mains have been planned to convey the projected wastewater in each of the planning periods. Capital
projects are identified in each of the planning periods. Gravity sewer pipes have been sized assuming
buildout occurs.
The City will determine which capital projects will be funded by developers and which projects will be
funded by the City's CIP. Triggers are defined for capital projects so that the timing of the projects can be
adjusted in the future if the rate and timing of growth change.
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NOVEMBER 2025 / FINAL / CAROLLO
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1.4.5
Chapter 6: Reclaimed Water Master Plan Summary
The Reclaimed Water Master Plan (RWMP) identifies the infrastructure needed by the City to fully benefit
from the reclaimed water produced at each WRF. This plan includes additional reclaimed water pipelines,
pump stations, aquifer storage and recovery (ASR) wells, and recharge basins. The locations of proposed
recharge facilities are planned to maximize the benefit to the City's water resource portfolio through ASR
to obtain groundwater credits. Where possible, groundwater recharge facilities are located to maximize
the groundwater credits that can be obtained from the groundwater recharge.
Capital projects have been identified in each planning period, with triggers that allow the project timing
to be adjusted if the timing of growth changes.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
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CHAPTER 2 PLANNING FRAMEWORK
2.1
Introduction
An IWMP requires a common set of assumptions upon which the plan for water resources, water
infrastructure, wastewater infrastructure, and reclaimed water infrastructure is based. This common set of
assumptions includes a definition of the service area, growth rate, timing of development, population
growth, and flow projections for water, wastewater, and reclaimed water systems. An IWMP considers the
water cycle as water moves through the water resource, water, wastewater, and reclaimed water systems
so that the amount of reclaimed water that is produced is correctly estimated as a water resource for
water resource planning within the Master Plan.
An IWMP also uses the same set of assumptions on the timing and location of development for all
components of the plan so capital improvement recommendations are coordinated between the water,
wastewater, and reclaimed water systems. This Master Plan update will set the road map for future
infrastructure needs and line sizing, as well as identify any needed capital improvement projects.
The IWMP planning framework defines the water resource requirements, water, wastewater, and
reclaimed water flow projections for the 2030, 2035, 2040, and buildout planning periods.
The City is unique in its approach to development planning and this planning framework considers the
City's needs in the following ways:
1. The City covers a very large land area with room to grow for many years. Rather than considering the
entire developable area within the City, only the land areas that could develop in the planning periods
of this Master Plan are considered.
2. By relying solely on groundwater and without having a DAWS, the City has relied primarily on
developers obtaining CAWS from the ADWR. With the State of Arizona placing holds on all new
CAWS in the Phoenix Active Management Area (AMA), current development less than 10 years is
focused on developments with a CAWS or development with less than 6 lots that do not require a
CAWS. This type of development generally consists of commercial, industrial, or multi-family units. In
this plan, lands that do not have a CAWS and, therefore, would need a DAWS are phased in planning
periods beyond 10 years.
3. The City is pursuing an ADAWS, and recently the Arizona Legislature passed a law that adds an Ag to
Urban water supply conversion. These two strategies for providing water resources for development
will likely expand the land areas that could develop within the time period of this IWMP.
4. The City has development agreements for a number of Master Planned communities. These Master
Planned communities are included in the flow projections, but if a CAWS has not already been
established, then these Master Planned communities would need to be in a DAWS to develop.
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5. The City is working to obtain a DAWS in one or more portions of the City, so flow projections are
grouped into geographical areas where a DAWS could be obtained. Each of these geographical
areas includes all the developable land, including lands with a CAWS and commercial/industrial/
multi-family/grandfathered development within the geographical area.
6. Generally, cities and other water/wastewater utilities have a built-in safety factor to allow for abnormal
peak flows as well as allowing some redundancy/backup in nearby mains should an abnormal event
occur. Therefore, the unit demand and flow factors in the City's design criteria are more conservative
and are used to size pipelines.
This planning framework chapter includes the following major sections:
Water and Wastewater Service Area.
Land Use.
Population Estimates.
Historical Water Flows.
Water Demand Projections.
Wastewater Flow Projections.
Reclaimed Water Projections.
Flow Projections Summary.
2.2
Water and Wastewater Service Area
2.2.1
Planning Area
The City's planning area is located west of Goodyear, Arizona, and east of Tonopah and has a land area of
639 square miles. The City's planning area includes lands north and south of the Gila River. North and
south of Interstate 10 (I-10), and north and south of the CAP canal. Land areas south of the Gila River
currently have no development plans or an identified water supply so this area has been excluded from
the 2025 IWMP. See Figure 2.1 for the City's planning area.
WPA 1
WPA 3
WPA 5
WPA 2
WPA 4A
WPA 4B
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2
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 2.1 City Planning Area Boundary and Water Planning Areas
CITY OF BUCKEYE
Legend
Water Planning
Area
Buckeye Planning
Area
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2-4
2.2.2
Water Planning Areas
To facilitate planning for a future DAWS in one or more areas of the City, the City's planning area is
subdivided into seven WPAs based on the potential water supplies available to serve each area. Flow
projections were established for each planning area. The reason for each WPA designation is provided
below:
1. Water Planning Area 1: Area 1 includes the northernmost part of the City. This area will most likely
receive water through the CAP canal from sources that include the Harquahala groundwater basin.
Area 1 includes the Sun City Festival development and Floreo, at Teravalis.
2. Water Planning Area 2: Area 2 is located north of I-10 on the western part of the City. Area 2 could
receive water through the CAP canal, a possible pipeline from the Harquahala groundwater basin, or
from Central Buckeye. Area 2 includes the Tartesso and West Phoenix Estates developments.
3. Water Planning Area 3: Area 3 is located between I-10 and the Roosevelt Irrigation District (RID)
canal and includes lands east of the Hassayampa River basin and west of the RID and Buckeye Water
Conservation and Drainage District (BWCDD) canal. Area 3 is currently served by groundwater wells. A
portion of Area 3 is served by Arizona Water Company, and wastewater from this area is delivered to
Buckeye.
4. Water Planning Area 4A: Area 4A is the land area currently served by the RID canal for irrigation.
Area 4A is currently supplied by groundwater but, in the future, could be served by surface water off
the RID canal.
5. Water Planning Area 4B: Area 4B is the land area currently served by the BWCDD canal for irrigation
between the canal and the Gila River. Area 4B is currently served with groundwater and in the future
could be served by surface water off the BWCDD canal.
6. Water Planning Area 5: Area 5 is located north of Area 3 and east of Area 2 on the Northeast of the
City's planning area. A portion of Area 5 includes the Verrado development, which is supplied by
EPCOR, a private water utility. The eastern portion of Area 5 is in the City's wastewater service area but
not the water service area because it is served by the Arizona Water Company. A DAWS is not planned
for Area 5.
7. Water Planning Area 6: Area 6 is located south of the Gila River, where no development is planned,
and there is no strategy to obtain water resources for this area. The City has no current plans to obtain
a DAWS in Area 6.
Figure 2.1 presents the City's WPAs.
2.2.3
Water and Wastewater Service Areas
Not all the City's land areas are planned for development in the planning periods of the IWMP. The City
has identified land areas that could develop in the foreseeable future, and these land areas were identified
in a geographic information system (GIS) layer. These land areas planned for future development, plus the
land areas already developed are the land areas that have been Master Planned in this study.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
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The City's water service area includes developable lands, except for the Verrado and Sienna Hills
developments, which are served by EPCOR. Lands east of Verrado to the City planning boundary receive
water services from Arizona Water Company. The City provides wastewater services to the land area
between Verrado and the City's eastern planning boundary, except for one half-mile strip of land along
the City's eastern boundary between 91st Avenue and Perryville Road from Indian School Road to Peoria
Avenue that is served by Liberty Utilities, Inc. The undeveloped land areas that the City plans to provide
water and wastewater services are presented in Figure 2.2. In the figure, the water service area is defined
as land areas that could develop and would be served water by the City. The wastewater service area
includes the lands where the City provides water service plus land on the eastern side of the City where
the City provides wastewater service, but other providers provide water service.
2.2.4
Developments
The City has 35 Master Planned communities that have development agreements in place. These Master
Planned communities are currently listed on the City's website1 and are presented in Figure 2.3.
In addition to the Master Planned communities, the City has a number of existing and planned
developments that are also presented in Figure 2.3.
2.2.5
Water Resource Classifications
The City's land areas planned for development are grouped according to whether the land has a water
resource that makes development possible. Grouping land areas according to water resource availability is
important to quantify demands for land areas for which a water resource is already obtained and land
areas that need to obtain a water resource before developing. The following categories are used to
classify lands according to water resource availability:
1. Grandfathered: Grandfathered land areas are existing developments that were developed before
1995 when the rules for the 1980 GMA became effective.
2. CAWS Not Required: Developments where land is subdivided into less than six parcels do not
require a CAWS. Industrial and commercial developments1 often fit into this category. These lands can
use groundwater without replenishment while not under a DAWS.
3. Developed: Land areas with a CAWS that are already fully developed.
4. Developing: Land areas with a CAWS that are developing but not developed by 2023.
5. Undeveloped: Land Areas with a CAWS but have not started developing by 2023.
6. No Water Source: Undeveloped land areas that do not have a CAWS. These land areas need a water
source other than groundwater to develop if the development is to be a subdivision with more than
six lots. Currently lands designated as No Water Source include lands that could participate in the Ag
to Urban program.
Figure 2.4 shows the City's developable land areas by water resource availability.
1 https://www.buckeyeaz.gov/business/development-services/planning-zoning/documents
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1.5
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Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 2.2 City of Buckeye Developable Areas that could be Provided Water and Wastewater Service
CITY OF BUCKEYE
Legend
Water Planning
Area
Wastewater Service
Area
Water and
Wastewater Service
Area
burg
74
Circle City
Wittmann
Morristown
10
10
Dixie
Allenville
Palo Verde
Buckeye
60
Liberty
16
26
5
34
23
27
28
7
9
19
8
29
11
32
17
22
24
6
33
2
31
30
4
3
21
15
18
13
25
10
12
20
14
1
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Disclaimer: Features shown in this figure are for planning purposes and represent
approximate locations. Engineering and/or survey accuracy is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 2.3 The City of Buckeye Master Planned Communities and Other Planned Developments
CITY OF BUCKEYE
Legend
Buckeye Planning Area
DevelopmentName
1 - Algodon
2 - Blue Horizons
3 - Buckeye 252
4 - Cipriani
5 - Copper Falls
6 - Desert Creek
7 - Elianto
8 - Festival Ranch
9 - Floreo at Terravalis
10 - Former Cemex Sand
and Gravel Quarry
11 - Henry Park
12 - Jackrabbit Crossing
13 - Marwest
14 - Mayfield
15 - Miller Crossings
16 - Monte Verde
17 - Montiere
18 - Mountain View
Business Center
19 - North Star Ranch
20 - Paloma Vista
21 - Parkman Ranch
22 - Sienna Hills
23 - Silver Rock
24 - Sun Valley South
25 - Sun Valley Villages I
and II
26 - Sundance
27 - Tartesso
28 - Tartesso West
29 - Teravalis
30 - Valle Del Rio
31 - Valle Del Sol
32 - Verrado
33 - Westpark
34 - Westwind
Other Planned
Developments, Outside of
MPCs
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1.5
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Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 2.4 City of Buckeye Land Areas by Water Resource Classification
CITY OF BUCKEYE
Legend
Water Planning
Area
Water Resource
Classification
CAWS but not
developed
Developed
Developing
Grandfathered
CAWS not required
No water resource
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2.3
Land Use
2.3.1
Land Use Classifications
Land areas that receive or may receive water and wastewater services have been assigned a land use
classification that is useful to predict water use. Land use classifications are used to estimate current water
use when customer billing data is correlated to existing customers. Then, once a unit water demand per
acre for each land use category is established, this unit water demand can be used to predict future water
use in undeveloped lands. This approach assumes that current water use patterns are predictive of future
water use in undeveloped lands with similar types of development.
Actual water use may be less than projected water use in newer developments with limited turf areas and
improved water saving fixtures. Currently there are many developments that use less water than the
project demand in their CAWS certificate. However, water demands in this IWMP for water resource
planning are projected at the level needed for a CAWS certificate. Unit demands for infrastructure sizing
follow the City's design standards.
Land use classifications for specific developments were determined by reviewing the following data
sources:
1. Aerial photography, for developed lands.
2. Development reports when available.
3. City of Buckeye General Plan Land Use GIS data layer.
The land use categories in the General Plan are more general than the land use categories in the City's
design standards. Therefore, the General Plan land use categories were mapped to the land use categories
in the City's design standards, which contain the land use categories used in the IWMP. To use the
residential land use categories, residential land areas needed to be assigned a housing density per acre.
For platted land areas, the number of houses per acre within developments was obtained by using the
City's parcel layer to determine the number of parcels per acre. Table 2.1 presents the correlation between
land use categories in the General Plan and the City's water design standards. Figure 2.5 presents the land
use categories that are assigned to lands to predict water use.
Table 2.1
General Plan Land Use Categories Mapped to City of Buckeye Land Use Categories for Water System Design
General Plan Land Use Category
Design Criteria Land Use Category
Rural
Low Density
Neighborhood, Master Planned Community
Medium Density
Active Adult
High Density
Business Commerce
Commercial/Mixed Use Master Planning
Activity Center, Employment
Industrial Master Planning
School Master Planning
Turf
Developed Open Space (non-turf areas)/Public Right-of-Way
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1.5
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 2.5 Land Use Categories for Developable Lands Used to Predict Water Usage
CITY OF BUCKEYE
Legend
Land Use
Commercial
High Density
Residential
Industrial
Low Density
Residential
Medium Density
Residential
Open Space
Turf
No Water Use
Water Planning
Area
2025 INTEGRATED WATER MASTER PLAN
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2-11
2.3.2
Unit Water Demands
Unit water demands for water resources planning were established by linking billed customer water use to
the land use GIS layer to obtain a water use per acre by land use classification. Where customer billing
data was not available for some land use categories, representative unit demand values were obtained
from other Maricopa County communities. Flows from developments with a given equivalent number of
dwelling units at buildout were calculated using 94 gallons per person per day. Table 2.2 presents the unit
water demands used to develop flow projections in Chapter 2 for the water resources needed for future
development.
Flow estimates for sizing water and wastewater pipes will use the City's 2025 Engineering Design
Standards (EDS) located on the City's website.
Table 2.2
Unit Water Demands by Land Use Category
Design Criteria Land Use Category
Abbreviation
Unit Water Demand
(gpd/ac)
Low Density
LDR
602
Medium Density
MDR
1,354
Active Adult
AA
1,504
High Density
HDR
2,820
Commercial/Mixed Use Master Planning
COM
1,550
Industrial Master Planning
IDU
880
School Master Planning
SCH
1,065
Turf
TUR
2,900
Developed Open Space (non-turf areas)/Public Right-of-Way
OS
0
gpd/ac - gallons per day per acre
2.3.3
Future Development
Based on population recorded by the United States Census Bureau, the City's annual average growth for
the past 10 years (2012 through 2022) was 7 percent. However, a growth rate of 7 percent is more rapid
than can be expected over the long term, especially since a constant annual growth rate percentage is
exponential, resulting in very rapid growth. Figure 2.6 shows the annual population growth (1990 to 2022).
In the next 20 years, the percentage growth rate is expected to decrease as the City becomes bigger. The
growth rate differs for each planning area of the City. Central Buckeye is expected to grow faster than the
other planning areas in the next 10 years as developments begin to come in along Arizona State Route 85.
The Floreo at Teravalis (Floreo) development is currently in development. Only developments that have a
CAWS or are zoned for nonresidential are planned to develop prior to 2040.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2-12
Figure 2.6
Historical and Projected Population Growth
The location where growth will occur is currently dependent on water resource factors. In 2023, ADWR
concluded that the West Salt River Valley and Hassayampa aquifers will be overdrawn within the next
100 years, so new developments that do not already have groundwater allocation will need to rely on
renewable water supplies rather than groundwater. New development can only occur on lands that
already have a CAWS until a water supply is obtained for the remaining lands. Developments with six or
fewer lots can still develop without a CAWS or DAWS. The City currently has 24,400 acres of land that
have a CAWS, so these lands can still develop. The Ag to Urban water supply may influence the timing
and location of new development.
Land areas were identified to develop in each of the planning periods of this Master Plan. Land areas with
a CAWS were assumed to develop first. As these land areas became fully developed, later planning
periods included development on lands that currently have no water resource, with the assumption that
provisions are being made for additional water supplies. The status of development in each planning
period is presented graphically to visualize the rate and location of development. Figure 2.7 presents the
current development in 2025. Figure 2.8 presents the anticipated percentage developed in 2030.
Figure 2.9 presents the anticipated percentage developed in 2035. Figure 2.10 presents the anticipated
percentage developed in 2040.
0
50,000
100,000
150,000
200,000
250,000
1990
2000
2010
2020
2030
2040
2050
Population
Year
Historical Population
Projected Population
rsburg
74
Circle City
Wittmann
Morristown
10
10
Dixie
Allenville
Palo Verde
Buckeye
60
Liberty
WPA 1
WPA 3
WPA 5
WPA 2
WPA 4A
WPA 4B
Last Revised: October 28, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch02\
O
0
3
1.5
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 2.7 2025 Estimate of Percentage Developed for Land Areas the City Classified as Developable
CITY OF BUCKEYE
Legend
Water Planning
Area
2025 Percent
Developed
0%
≤ 25%
26% - 50%
51% - 75%
76% - 100%
rsburg
74
Circle City
Wittmann
Morristown
10
10
Dixie
Allenville
Palo Verde
Buckeye
60
Liberty
WPA 1
WPA 3
WPA 5
WPA 2
WPA 4A
WPA 4B
Last Revised: October 28, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch02\
O
0
3
1.5
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 2.8 2030 Estimate of Percentage Developed for Land Areas the City Classified as Developable
CITY OF BUCKEYE
Legend
Water Planning
Area
2030 Percent
Developed
0
≤ 25%
26% - 50%
51% - 75%
76% - 100%
rsburg
74
Circle City
Wittmann
Morristown
10
10
Dixie
Allenville
Palo Verde
Buckeye
60
Liberty
WPA 1
WPA 3
WPA 5
WPA 2
WPA 4A
WPA 4B
Last Revised: October 28, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch02\
O
0
3
1.5
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 2.9 2035 Estimate of Percentage Developed for Land Areas the City Classified as Developable
CITY OF BUCKEYE
Legend
Water Planning
Area
2035 Percent
Developed
0%
≤ 25%
26% - 50%
51% - 75%
76% - 100%
ersburg
74
Circle City
Wittmann
Morristown
10
10
Dixie
Allenville
Palo Verde
Buckeye
60
Liberty
WPA 1
WPA 3
WPA 5
WPA 2
WPA 4A
WPA 4B
Last Revised: October 28, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch02\
O
0
3
1.5
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 2.10 2040 Estimate of Percentage Developed for Land Areas the City Classified as Developable
CITY OF BUCKEYE
Legend
Water Planning
Area
2040 Percent
Developed
0%
≤ 25%
26% - 50%
51% - 75%
76% - 100%
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2-17
2.4
Population Estimates
Population projections rely on housing density and population density data derived from the City's design
criteria. Table 2.3 presents the population density for the population calculation. Table 2.4 presents the
projected population for each planning year in the City's development area.
Table 2.3
Population Density
Zoning District
Land Use Category
Abbreviation
Average Housing
Density (DU/ac)
Population Density
(capita/DU)
Residential
Low Density
LDR
2
3.2
Medium Density
MDR
4.5
3.2
Active Adult
AA
8.0
2.0
High Density
HDR
12.0
2.5
DU/ac - dwelling units per acre; capita/DU - capita per dwelling unit
Table 2.4
Population Projection Table
WPA
2025 Population
2030 Population
2035 Population
2040 Population
Buildout Population
1
18,286
24,000
27,000
33,000
561,000
2
14,857
17,000
21,000
25,000
314,000
3
49,000
74,000
84,000
92,000
205,000
4A
23,000
33,000
38,000
41,000
157,000
4B
7,857
10,000
11,000
11,000
136,000
5
10,857
13,000
13,000
13,000
31,000
Total
123,857
171,000
194,000
215,000
1,404,000
2.5
Historical Water Flows
Historical water production data is useful in preparing future demand projections because this data
provides the starting point for future projections. Historical flows are also used to create the following
information:
Seasonal demand peaking factors.
Non-revenue water estimates.
The City has four hydraulically separate water distribution systems that are supplied by wells. Table 2.5
presents the 2022 water supply from wells in each of the water delivery areas. The City operates an
additional three very small, hydraulically separate water distribution systems that are not expected to
change significantly and are therefore not included in this analysis.
Table 2.5
2022 Water Production by Water Delivery Area
WPA
Service Area
Annual Average Water Production (mgd)
WPA 1
Sun City Festival
1.54
WPA 2
West Phoenix Estates
0.16
WPA 2
Tartesso
1.24
WPA 3, 4A, and 4B
Central Buckeye
6.90
Total
9.84
mgd - million gallons per day
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2-18
2.5.1
Seasonal Peaking Factors
Figure 2.11 presents the monthly peaking factors created by normalizing water production for the
four water distribution systems in the City: Central Buckeye, Tartesso, Sun City Festival, and Sun Valley
Estates. Tartesso has a higher peaking factor, presumably because this area has more turf irrigation. The
monthly peaking factor for three areas is approximately 1.3. Maximum daily peaking factors are usually
15 to 25 percent higher than the maximum monthly peaking factor. Table 2.6 presents the maximum day
and peak hour peaking factors in the City's design criteria. The City's peaking factor for maximum day
demands is conservative and will be used in the IWMP.
Figure 2.11
Normalized Monthly Peaking Factors
Table 2.6
Water Demand Peak Flow Multipliers
Peaking Factor
Water Demand Maximum Day/Average Day Peaking Factor
1.8
Water Demand Peak Hour/Water Demand Average Day Peaking Factor
3.0
2.6
Water Demand Projections
The future planning periods established for the IWMP are years 2030, 2035, and 2040. Using the data and
assumptions described in earlier sections, flow projections have been calculated for water demand and
supply planning. Flow projection calculations differ from the 2017 IWMP since different assumptions were
made in that plan. This report includes unit water demands using billed customer water use for water
resource and treatment capacity planning. The City's EDS unit demands, which are more conservative, are
used for pipeline sizing.
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2-19
2.6.1
Demand Projection Assumptions
The following assumptions were made in preparing the water resource projections:
A non-revenue factor of 8 percent has been added to the projected customer water demand to
obtain the projected water production. The 8 percent value is based on 2021 billing cycle
non-revenue water calculation and was provided by the City.
Water demands are based on the unit demands in Table 2.2.
Adjustments have not been made for future water conservation for the initial flow projections. The
City is assumed to already have water conservation measures in place.
However, if the City chooses to significantly restrict outdoor water use, additional water reductions in
water use could be obtained. An additional flow projections table has been provided where the
residential water unit demands for future planning years are assumed to be reduced by one-third.
2.6.2
Water Demands
Table 2.7 (mgd) and Table 2.8 acre-feet per year (AFY) present the projected water demands by land use
category for the areas that have a water resource to develop in the next 15 years. Table 2.9 (mgd) and
Table 2.10 (AFY) present the projected water demand categorized by WPA. Table 2.11 (mgd) and
Table 2.12 (AFY) present the projected water demand with water conservation. To estimate the demand
projections with conservation, a reduction factor of one-third is applied to residential areas where
outdoor water use is assumed to be curtailed.
The 2017 IWMP water demand projection in 2042 for WPAs 3, 4A, and 4B is 32.5 mgd and in this IWMP,
the 2040 water demand projection for WPAs 3, 4A, and 4B is 19.3 mgd. The 2017 IWMP planning area was
Central Buckeye, whereas this report uses WPAs as the planning area.
Table 2.7
Water Demand Projections for Future CAWS and Commercial/Industrial Areas by Land Use Category (mgd)
Land Use Category 2023 Water
Demand (mgd)
2025 Water
Demand (mgd)
2030 Water
Demand (mgd)
2035 Water
Demand (mgd)
2040 Water
Demand (mgd)
Buildout Water
Demand (mgd)
Low Density
Residential
0.0
0.0
0.0
0.0
0.0
2.8
Medium Density
Residential
8.0
10.7
14.2
16.4
18.5
142.3
High Density
Residential
0.0
0.1
0.1
0.2
0.2
0.8
Commercial
1.6
1.7
3.4
3.8
4.1
18.8
Industrial(1)
0.5
0.5
1.9
2.5
3.8
10.4
School
0.0
0.0
0.0
0.0
0.0
0.2
Turf
0.0
0.0
0.1
0.1
0.1
0.2
Total
10.1
13.0
19.7
23.0
26.7
175.5
Notes:
(1) Industrial demand assumes the general industrial land use as provided in the City's 2025 Engineering Design Standards. Future
projections can be updated when the industrial areas have been designated as warehouses, general industrial, or data centers.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2-20
Table 2.8
Water Demand Projections for Future CAWS and Commercial/Industrial Areas by Land Use Category (AFY)
Land Use
Category
2023 Water
Demand (mgd)
2025 Water
Demand (mgd)
2030 Water
Demand (mgd)
2035 Water
Demand (AFY)
2040 Water
Demand (AFY)
Buildout Water
Demand (AFY)
Low Density
Residential
40
40
40
40
40
3,180
Medium Density
Residential
9,000
12,000
15,900
18,400
20,800
159,400
High Density
Residential
0
110
160
180
190
840
Commercial
1,800
2,000
3,800
4,300
4,500
21,040
Industrial
600
600
2,100
2,800
4,300
11,630
School
30
30
30
30
30
280
Turf
0
0
60
70
80
230
Total
11,470
14,780
22,090
25,820
29,940
196,600
Table 2.9
Water Demand Projections by WPA (mgd)
WPA
2023 Water
Demand
(mgd)
2025
Water Demand
(mgd)(1)
2030
Water Demand
(mgd)
2035
Water Demand
(mgd)
2040
Water Demand
(mgd)
Buildout
Water Demand
(mgd)
1
1.6
1.7
3.2
3.6
4.2
76.2
2
1.3
1.4
1.7
2.2
2.7
38.7
3
4.5
5.8
9.2
10.4
11.4
24.4
4A
2.1
3.3
4.5
5.6
6.4
20.6
4B
0.8
0.9
1.0
1.3
2.0
15.6
5
0.0
0.0
0.0
0.0
0.0
0.0
Total
10.3
13.1
19.6
23.1
26.7
175.5
Table 2.10
Water Demand Projections by WPA (AFY)
WPA
2023 Water
Demand
(AFY)
2025
Water Demand
(AFY)
2030
Water Demand
(AFY)
2035
Water Demand
(AFY)
2040
Water Demand
(AFY)
Buildout
Water Demand
(AFY)
1
1,800
1,900
3,600
4,000
4,700
85,400
2
1,400
1,600
1,900
2,500
3,000
43,400
3
5,000
6,500
10,300
11,600
12,800
27,300
4A
2,300
3,700
5,100
6,200
7,200
23,100
4B
900
1,000
1,200
1,400
2,300
17,500
5
0
0
0
0
0
0
Total
11,400
14,700
22,100
25,700
30,000
196,700
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2-21
Table 2.11
Water Demand Projections with Water Conservation by WPA (mgd)
WPA
2023
Water Demand
(mgd)
2025
Water Demand
(mgd)
2030
Water Demand
(mgd)
2035
Water Demand
(mgd)
2040
Water Demand
(mgd)
Buildout
Water Demand
(mgd)
1
1.6
1.6
2.1
2.4
2.8
51.1
2
1.3
1.3
1.2
1.5
1.8
25.9
3
4.5
4.5
6.2
7.0
7.6
16.3
4A
2.1
2.1
3.0
3.7
4.3
13.8
4B
0.8
0.8
0.7
0.8
1.4
10.5
5
0.0
0.0
0.0
0.0
0.0
0.0
Total
10.3
10.3
13.2
15.4
17.9
117.6
Table 2.12
Water Demand Projections with Water Conservation by WPA (AFY)
WPA
2023
Water Demand
(AFY)
2025
Water Demand
(AFY)
2030
Water Demand
(AFY)
2035
Water Demand
(AFY)
2040
Water Demand
(AFY)
Buildout
Water Demand
(AFY)
1
1,800
1,800
2,410
2,680
3,150
57,200
2
1,400
1,400
1,270
1,680
2,010
29,060
3
5,000
5,000
6,900
7,770
8,580
18,290
4A
2,300
2,300
3,420
4,150
4,820
15,460
4B
900
900
800
940
1,540
11,720
5
0
0
0
0
0
0
Total
11,400
11,400
14,800
17,220
20,100
131,730
2.7
Wastewater Flow Projections
2.7.1
Wastewater Flow Factors
Wastewater flows are estimated by taking the ratio of the wastewater flow in a service area divided by the
water demand in an area. The City's wastewater flows in Central Buckeye were divided by the water
production to obtain the wastewater to water factor of 0.56. Relative to other communities, the
wastewater-to-water factor is high and is in the direction that Arizona communities should move with
limited water resources.
2.7.2
Wastewater Flows
Table 2.13 and Table 2.14 present the wastewater flow projections categorized by WPA.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2-22
Table 2.13
Wastewater Flow Projections by WPA (mgd)
WPA
2023 Wastewater
Flow
(mgd)
2025 Wastewater
Flow
(mgd)
2030 Wastewater
Flow
(mgd)
2035 Wastewater
Flow
(mgd)
2040 Wastewater
Flow
(mgd)
Buildout
Wastewater Flow
(mgd)
1
0.8
0.9
1.7
1.9
2.2
39.6
2
0.7
0.7
0.9
1.2
1.4
20.1
3
2.3
3.0
4.7
5.3
5.8
12.6
4A
1.1
1.7
2.3
2.9
3.3
10.7
4B
0.4
0.5
0.5
0.7
1.1
8.1
5
0
0.3
0.4
0.4
0.4
0.6
Total
5.3
7.1
10.5
12.4
14.2
91.7
Table 2.14
Wastewater Flow Projections by WPA (AFY)
WPA
2023 Wastewater
Flow
(AFY)
2025 Wastewater
Flow
(AFY)
2030 Wastewater
Flow
(AFY)
2035 Wastewater
Flow
(AFY)
2040 Wastewater
Flow
(AFY)
Buildout
Wastewater Flow
(AFY)
1
900
1,000
1,900
2,100
2,400
44,300
2
700
800
1,000
1,300
1,600
22,500
3
2,500
3,300
5,300
6,000
6,500
14,100
4A
1,200
1,900
2,600
3,200
3,700
12,000
4B
500
500
600
700
1,200
9,100
5
0
300
400
500
500
700
Total
5,800
7,800
11,800
13,800
15,900
102,700
2.8
Reclaimed Water Flow Projections
2.8.1
Reclaimed Water Flow Projection Assumptions
Reclaimed water projections are estimated based on the following assumptions:
The reclaimed water flow is calculated based on the wastewater flow multiplied by the
wastewater-to-reclaimed water ratio to account for water losses in the wastewater treatment
process.
The wastewater flow to reclaimed water flow ratio is 0.92.
2.8.2
Reclaimed Water Flows
Table 2.15 and Table 2.16 present the projected reclaimed water flow by WPA.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2-23
Table 2.15
Reclaimed Water Flow Projections by WPA (mgd)
WPA
2023 Reclaimed
Water Flow
(mgd)
2025 Reclaimed
Water Flow
(mgd)
2030 Reclaimed
Water Flow
(mgd)
2035 Reclaimed
Water Flow
(mgd)
2040 Reclaimed
Water Flow
(mgd)
Buildout
Reclaimed Water
Flow (mgd)
1
0.7
0.8
1.5
1.7
2.0
36.4
2
0.6
0.7
0.8
1.1
1.3
18.5
3
2.1
2.7
4.3
4.9
5.4
11.6
4A
1
1.5
2.1
2.6
3
9.8
4B
0.4
0.4
0.5
0.6
1
7.5
5
0
0.2
0.4
0.4
0.4
0.6
Total
4.8
6.3
9.6
11.3
13.1
84.4
Table 2.16
Reclaimed Water Flow Projections by WPA (AFY)
WPA
2023 Reclaimed
Water Flow
(AFY)
2025 Reclaimed
Water Flow
(AFY)
2030 Reclaimed
Water Flow
(AFY)
2035 Reclaimed
Water Flow
(AFY)
2040 Reclaimed
Water Flow
(AFY)
Buildout
Reclaimed Water
Flow (AFY)
1
800
900
1,700
1,900
2,200
40,800
2
700
700
900
1,200
1,500
20,700
3
2,300
3,100
4,800
5,500
6,000
13,000
4A
1,100
1,700
2,400
3,000
3,400
11,000
4B
400
500
600
700
1,100
8,400
5
0
300
400
400
400
600
Total
5,300
7,200
10,800
12,700
14,600
94,500
2.9
Flow Projections Summary
Water demands, wastewater flows, and reclaimed water flows by development for Master Planned
communities and for individual defined developments in the City are presented in Appendix 2A for
infrastructure planning.
Water production requirements that include non-revenue water, wastewater, and reclaimed water flow
projections by WPAs are presented in Table 2.17 (mgd) and Table 2.18 (AFY) to show the water resources
needed to serve the City's WPAs. Water production requirements that include non-revenue water,
wastewater, and reclaimed water flow projections by water resource category are presented in Table 2.19
(mgd) and Table 2.20 (AFY).
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2-24
Table 2.17
Buildout Water Flows by WPAs (mgd)
WPA
Buildout Water Production
(mgd)(1)
Buildout Wastewater Flow
(mgd)
Buildout Reclaimed Water Flow
(mgd)
1
76.2
39.6
36.4
2
38.7
20.1
18.5
3
24.4
12.6
11.6
4A
20.6
10.7
9.8
4B
15.6
8.1
7.5
5
0.0
0.6
0.6
Total
175.5
91.7
84.4
Notes:
(1) Buildout water production is the buildout water demand plus 8% non-revenue water, which is greater than the Table 2.7 and Table 2.8
projected buildout water demand.
Table 2.18
Buildout Water Flows by WPAs (AFY)
WPA
Buildout Water Production
(AFY)
Buildout Wastewater Flow
(AFY)
Buildout Reclaimed Water Flow
(AFY)
1
85,380
44,300
40,800
2
43,370
22,500
20,700
3
27,300
14,100
13,000
4A
23,080
12,000
11,000
4B
17,490
9,100
8,400
5
0
700
600
Total
196,620
102,700
94,500
Notes:
(1) Buildout water production is the buildout water demand plus 8 percent non-revenue water, which is greater than the Table 2.7 and
Table 2.8 projected buildout water demand.
Table 2.19
Buildout Water Demand by Water Resource Category for WPAs
WPA
Buildout Water Production
(mgd)
Buildout Wastewater Flow
(mgd)
Buildout Reclaimed Water
Flow (mgd)
Developed
10.7
5.6
5.1
Developing
3.8
2.1
2
Grandfathered
2
1
1
CAWS but not Developed
15.9
8.3
7.6
Water Resource Undefined
128.9
67.2
61.8
CAWS not Required
14.1
7.5
6.9
Total
175.4
91.7
84.4
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Table 2.20
Buildout Water Demand by Water Resource Category for WPAs (AFY)
WPA
Buildout Water Production
(AFY)
Buildout Wastewater Flow
(AFY)
Buildout Reclaimed Water
Flow (AFY)
Developed
12,000
6,200
5,700
Developing
4,200
2,400
2,200
Grandfathered
2,200
1,200
1,100
CAWS but not Developed
17,900
9,300
8,500
Water Resource Undefined
144,400
75,200
69,200
CAWS not Required
15,800
8,400
7,800
Total
196,500
102,700
94,500
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CHAPTER 3 WATER RESOURCES
3.1
Introduction
The City's Water Resources Department manages the City's drinking water, wastewater, and reclaimed
water systems. The City's water portfolio consists of surface water from the Colorado River, groundwater,
reclaimed water, and stored water credits.
The City completed its first IWMP in 2017, which identified options for acquiring additional water
resources to promote long-term sustainability and planned growth. One of the key recommendations
from the 2017 IWMP was for the City to take steps to acquire a DAWS, which would allow the City more
control in managing growth and deployment of water resources.
In 2020, the City engaged in a WRMP that was focused on identifying potential supply options and the
associated acquisition costs for new sources of supply, including the infrastructure required to deliver the
water to customers. The 2025 IWMP builds on the work of these recent water resources planning
documents and identifies a phased approach for the City to obtain a DAWS.
The water resources chapter presented here identifies:
The regulatory guidelines the City must work within to obtain, manage, and deploy water resources.
The water resources currently available to the City as well as additional supplies that could potentially
be acquired.
Actions that the City can take to obtain a DAWS through a phased approach.
Additional recommendations for the City to consider over the next 5 to 10 years that will support the
City's ability to maintain a DAWS and expand their DAWS service area.
As the City looks to the future, obtaining a DAWS and practicing sound water resources management
practices, policies, and actions will be vital to the City's ability to continue to grow and attract economic
development opportunities. It will also provide a mechanism for the City to continue to provide safe,
reliable long-term water supplies to its citizens.
3.2
Regulatory Framework
Arizona water law separately governs the use of surface water, CAP water, groundwater, and reclaimed
water. The State of Arizona regulates surface water with the Public Water Code established in 1919. The
Arizona GMA of 1980 regulates groundwater in Arizona.
Generally, Arizona's water laws are intended to provide for and promote orderly use of the State's
available water resources. Additional statutes also impact the acquisition and use of Colorado River water,
including the CAP, and to a minimal extent, reclaimed wastewater (referred to as effluent in the statutes).
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Arizona's water statutes are complex, but necessary to help protect and efficiently use this valuable
resource. The combination of statutes, administrative rules, court decisions, and other legal agreements
collectively govern the amount of water available, how it can be conveyed, and how and where it can be
used by the City. Understanding how these legal and institutional issues impact the use of the City's water
supplies is key to effectively maintaining and managing a robust water resources portfolio while planning
for the acquisition of future water supplies needed to serve growth.
The following sections highlight and summarize some of the key components of the many regulations
and institutional constraints influencing water resources planning for the City.
3.2.1
Groundwater Code: 1980 Groundwater Management Act
Prior to 1980, specific areas of Arizona experienced groundwater levels declining at rapid rates. Local,
state, and federal interests recognized the threats this posed to the economy and welfare of the State. The
Arizona State Legislature enacted the GMA regulating the use of groundwater.
The GMA created four initial AMAs where the most severe groundwater overdraft was occurring. These
initial AMAs include the Phoenix AMA, Prescott AMA, Pinal AMA, and the Tucson AMA (now divided into
the Tucson and Santa Cruz AMAs). Each AMA has an established statutory groundwater management
goal.
The City is located within the Phoenix AMA. The statutory water management goal for the Phoenix AMA is
to achieve safe yield by the year 2025.
There are five primary provisions that apply to the Phoenix AMA:
Establishment of a program of groundwater rights and permits.
Preparation of 5 water management plans (for 4, 10-year management periods beginning in 1980, and
a final 5-year management plan for years 2020 through 2025) which include mandatory conservation
requirements.
Development of an assured water supply program.
Metering and measuring water pumped from wells (with some exceptions for wells pumping less than
35 gallons per minute [gpm]).
Reporting annual water withdrawal and use.
3.2.1.1
Assured Water Supply
The Assured Water Supply (AWS) program included in the 1980 GMA has been strengthened with the
adoption of the AWS administrative rules in 1995. Entities wishing to develop and sell subdivided lands
within an AMA (defined as six or more subdivided lots) must demonstrate sufficient renewable water
supplies are available to meet the proposed new development's demands for 100 years. One way to
achieve this is for a water provider to establish and maintain a DAWS. Then, new subdivisions can be
approved for development within the water provider's service area. Another way to achieve this is by
individual developers obtaining a CAWS for each lot.
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There are five requirements for demonstrating an AWS:
Sufficient water supplies must be physically, legally, and continuously available for a 100-year period.
The water provider must have the financial capability to install the required facilities to treat and
deliver water.
The quality of the water sources must meet Arizona Department of Environmental Quality (ADEQ)
requirements.
Uses of the water must be consistent with the Management Goal of the AMA.
Uses of the water must be consistent with the conservation requirements of the AMA Management
Plan.
The AWS Rules limit the amount of groundwater a City with a Designation (designated municipal
provider) may withdraw to be "consistent with the management goal" of the AMA. Understanding this
provision is complicated and based upon several legal distinctions, but critical to determining how water
supplies must be managed for the City, which seeks to become a designated municipal provider.
The differences between "paper water accounting" and physical water management are important. For
example, all water physically located underground for the purpose of determining the amount of water
that is "physically available", is considered groundwater. In other words, this "underground water" may
have several legal titles such as long-term storage credits, incidental recharge credits, etc. However,
because of the physical availability component of the AWS designation criteria, the amount of "credits"
held by the water provider are meaningless if there is insufficient water physically present in the aquifer
for the City to pump and use. Once physical availability is achieved and maintained, then the "paper water
accounting" process can be applied.
There is also a component of legally defined groundwater a designated municipal provider can use
without incurring a replenishment obligation. This groundwater is maintained in the provider's
"Groundwater Allowance Account." This account is comprised of several legal "subclasses." While this can
be a complex mix of supplies, it generally includes:
1. The initial, or "Phase-In," groundwater allowance is computed as a percentage of the provider's
historical water use.
2. The groundwater allowance may be increased by extinguishment credits obtained through the
extinguishment of Grandfathered Groundwater Rights.
3. The groundwater allowance account is increased annually by an "incidental recharge factor"
calculated as a percentage of water use (this mathematically increases in volume as water use
increases). This subclass of allowable groundwater should be considered water that has returned to
the aquifer from system leaks, excess water applied to landscapes, and stormwater flows. While
included in the groundwater allowance account, this water can be considered a physical supply of
groundwater as opposed to water from the Phase-In Allowance and extinguishment credits.
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3.2.1.2
Groundwater Rights
The GMA established several classes of groundwater rights required for most groundwater pumping
within an AMA. These rights include:
Service Area Rights: This is the classification of the groundwater right held by the City. These may
also be issued to irrigation districts for the delivery of groundwater to their member lands.
Irrigation Grandfathered Rights (IGFR): These rights are, in general terms, held by commercial
agricultural landowners.
Type 1 Non-Irrigation Grandfathered Rights (Type 1 Rights): These rights are derived from lands
that were originally relying on IGFRs, but for specific reasons retired the land from agriculture and
needed a legal right for the landowner to continue using groundwater for non-agricultural purposes.
Type 2 Non-Irrigation Grandfathered Rights (Type 2 Rights): These rights are held by
non-agricultural groundwater users and were issued after passage of the GMA. These rights can be
leased, all or in part, or sold in their entirety, for use anywhere within the AMA.
The number of IGFRs and Type 2 Rights can only be reduced over time; no new IGFRs or Type 2 Rights
can be created in the AMA. Type 1 Rights could theoretically increase in number but only through the
retirement of IGFRs, which typically are awarded a reduced groundwater entitlement for non-agricultural
water uses.
The term "Grandfathered Rights" is derived from the fact that water uses in existence for the 5 years prior
to enactment of the GMA (1975 – 1980) were "grandfathered in" and awarded the right to continue
pumping and using groundwater. This includes irrigated lands that converted to a non-irrigation use
during a specific qualifying period prior to 1980; these lands were issued Type 1 Rights. Type 1 Rights
created after the GMA by retiring IGFRs are still considered grandfathered rights since their origin is from
irrigation grandfathered rights.
Service Area Rights
For municipal water providers such as the City, service area rights allow for the withdrawal and
transportation of as much groundwater as required within the water provider's service area boundaries to
serve the needs of their customers. Service area rights are the only right that can be increased in volume
and delivery area, and they are the only groundwater right that can be newly established within an AMA.
There are specific procedures for expanding/extending existing service area rights, and for establishing
new and/ or "satellite" service areas. However, to be consistent with the goal of the Phoenix AMA,
groundwater use must now be derived from the recovery of water stored underground through
underground storage facilities (USFs) and groundwater savings facilities (GSF) or replaced (replenished)
immediately by the designated municipal provider with a renewable water source. Alternatively, the
designated municipal provider can rely upon the Central Arizona Groundwater Replenishment
District (CAGRD) to provide this service and pay a replenishment tax to the district.
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Irrigation Grandfathered Rights and Extinguishment Credits
These rights allow the use of groundwater to irrigate only the exact land where the initial right was
established (with rare exceptions). If the land develops for a non-agricultural use and receives water
pursuant to the City's service area right, the IGFR can be extinguished, and credits are created that can be
conveyed to the City (or sold to others). The number of extinguishment credits (ECs) that can be
generated is gradually reduced by a formula in the ADWR administrative rules until the year 2025 when
the ability to create these credits in the Phoenix AMA ceases. If these rights are not extinguished upon
development, they are classified as inactive/developed by the ADWR and the rights are not typically
re-activated for commercial agricultural use.
Type 1 Non-Irrigation Grandfathered Right
These rights provide for the use of groundwater on lands that are permanently retired from commercial
agriculture and were converted to a non-irrigation use after January 1, 1965. Under specific restrictions,
Type 1 rights can still be created from IGFRs. One of these conditions is that the land cannot reasonably
receive water from a potable water provider (e.g., not completely surrounded by a potable water
provider). A Type 1 Right allows withdrawal of up to 3 acre-feet (AF) of groundwater per acre per year.
Type 1 Rights cannot be transferred to other lands. If the land is eventually served by a potable water
provider, the right can be extinguished up until the year 2025 pursuant to a specific formula contained in
the ADWR Administrative rules.
Type 2 Non-Irrigation Grandfathered Right
These rights are based on the maximum historical pumping of groundwater for a non-irrigation use in any
one year between 1975 and 1980. A Type 2 Right can be leased in whole or in part, or sold only in its
entirety, and used anywhere within the Phoenix AMA. It can also be extinguished pursuant to the ADWR's
administrative rules until the year 2025, however, the flexibility and ability to market these rights make the
extinguishment of these rights extremely rare. There is also a subclass of these rights restricted to specific
uses such as power generation and sand and gravel operations.
3.2.2
Central Arizona Groundwater Replenishment District
In 1990, the State Legislature authorized the establishment of Groundwater Replenishment Districts.
CAGRD, which is a division of the Central Arizona Water Conservation District (CAWCD), was established
in 1993 with voluntary membership. The purpose of the CAGRD is to provide a mechanism for landowners
and water providers to demonstrate an AWS under the AWS rules.
The CAGRD recharges unused CAP water, or other renewable water supplies, to offset groundwater
pumping by its members. CAWCD owns and operates several USFs including the Agua Fria, Hieroglyphic
Mountains, Tonopah Desert, and Superstition Mountains projects where the CAGRD can store water. The
CAGRD can also store water in GSFs. The CAGRD is not currently required, however, to replace groundwater
in the same location where it was extracted. It can replace groundwater pumping anywhere within the AMA.
Because the City's primary water supplies are groundwater, to obtain a DAWS, the City will need to
establish a CAGRD membership and become a member service area to demonstrate consistency with the
management goal of the Phoenix AMA. This will provide a means to offset the City's groundwater
pumping but does not provide the City with a physical water supply.
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3.2.3
Recharge, Underground Storage and Recovery, and Replenishment
In 1986, the State enacted the Underground Water Storage and Recovery (UWSR) and Underground
Water Storage and Replenishment Act (UWSRA) to allow groundwater recharge, create a long-term
storage credit tracking system, and regulate recharge, storage, and recovery of all classes of water. These
Acts allow renewable supplies to be recharged and stored underground to meet future demands, and
encourage the use of excess renewable supplies, such as CAP water and reclaimed water, that would
otherwise remain unused.
The distinction between "recharge" and "underground storage and recovery" is simple. Water can be
recharged by any party without the intent to later recover the recharged water for its use. In a case like
this, the water recharged would be considered a "donation to the AMA". "Underground Storage and
Recovery" is the practice of storing water underground for recovery and use later. Finally, the statutes
refer to replenishment; this is the practice of replacing groundwater previously pumped from the aquifer
by a specific party.
Underground storage projects involve two types of permits, namely the USF Permit and the Water
Storage (WS) Permit. The USF permit regulates the "how" of underground storage, and the WS permit is
issued for the purposes of accruing and accounting for credits. The USF has two types of physical facilities,
namely constructed and managed. Constructed facilities include facilities specifically built for facilitating
storage such as spreading basins, injection wells, and vadose zone wells. The managed facility permit
applies when water is discharged to a natural stream and water is allowed to infiltrate through natural
processes.
The UWSRA was amended in 1990 to include provisions for a third type of recharge identified as "indirect"
or "in lieu" through a GSF. Originally, this technique was called indirect recharge because it is an "indirect"
method where reclaimed water or CAP water is delivered by a water provider, to a groundwater user, such as
an agricultural irrigation district. The recipient then agrees to reduce groundwater pumping by a like
amount. The water provider gains storage credits for water delivered, with the same legal identity (CAP
water, reclaimed water, etc.) equal to the amount not pumped by the irrigation district minus a 5 percent cut
for the aquifer (reclaimed water is exempt from this cut). At present, only water used by agricultural irrigators
in excess of their own CAP allocation can be counted as credits. It is possible under the statutes that water
could be delivered to a groundwater using, non-agricultural water user, such as a golf course, to accomplish
the same thing.
An amendment to the UWSRA was added which established "annual storage and recovery" (AS&R)
accounts. This addition to the UWSRA allows for the use of underground storage facilities and wells to
store and recover water on an annual basis without having to construct costly treatment and conveyance
facilities. Water stored under an AS&R permit must be recovered in the same calendar year as it was
stored. Currently, along with long term storage and recovery, this is one approach to converting reclaimed
water to drinking water without the expense of direct potable reuse (DPR).
To recover the stored water credits, a recovery well permit is required. An existing well may be permitted
as a recovery well provided that it is demonstrated that other wells in the vicinity will not be harmed by
the recovery of the stored water. Water recovered from a recovery well retains the legal identity of the
water when it was stored.
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3.2.4
Central Arizona Project Subcontract
The CAWCD administers and manages the CAP under its contract with the United Stated Bureau of
Reclamation (USBR) for the State of Arizona. The City has a subcontract with CAWCD to obtain and use
CAP water.
3.2.5
Arizona Well Spacing and Well Impact Rules
Well spacing and impact rules for non-exempt wells in the AMAs are established by the ADWR. The
purpose of these rules is to prevent unreasonable harm to surrounding land or other water users that may
result from geographic concentrations of wells. These rules address three areas where unreasonable harm
may occur:
1. Drawdown of water levels at neighboring wells of record.
2. Regional land subsidence.
3. Migration of contaminated groundwater to a well of record.
Hydrogeologic studies must determine if a new production and/or recovery well will cause unreasonable
harm. If an adverse impact is projected, options to mitigate the issue may include obtaining written
consent from owners of impacted wells, reducing the planned pumping rate of the proposed well, or
moving the proposed well to a new location.
3.2.6
Water Reuse Regulations
Reclaimed (recycled) water in the State of Arizona must meet water quality standards outlined in state
statutes. Additionally, water released to surface watercourses or groundwater recharge facilities must have
the appropriate discharge permits.
3.2.6.1
Aquifer Protection Permit
Discharges to aquifers are protected under two main articles of the Arizona Administrative Code (A.A.C.).
Article 4 of Chapter 11 (A.A.C. R18-11-400) defines numeric water quality standards for discharges to
aquifers that are designated for drinking water protected uses. This article establishes water quality
standards for inorganics, metals, organics, pesticides, polychlorinated biphenyls, and radionuclides.
Article 2 of Chapter 9 (A.A.C. R18-9-200) defines the requirements of a sewage treatment facility with
regards to permitting, compliance, discharge characterization, reporting, and hydrogeologic studies to
determine the impact to an aquifer, if any. This regulation also requires new or expanded facilities to meet
Best Available Demonstrated Control Technology (BADCT) requirements to achieve the greatest degree of
discharge reduction. BADCT requires property setback limits for noise and odor control, provisions for a
standby power source, and protection against floods. Treatment performance requirements are
established and presented in Table 3.1. In addition, a facility must minimize trihalomethane compounds
generated as disinfection byproducts using chlorination – de-chlorination, ultraviolet, or ozone
disinfection systems.
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Table 3.1
Arizona Regulated Wastewater Treatment Requirements for BADCT
Regulated Parameter
Limit (mg/L)
BOD₅
30 mg/L (30-day average)
45 mg/L (7-day average)
TSS
30 mg/L (30-day average)
45 mg/L (7-day average)
pH
6.0 - 9.0
Removal Efficiency for BOD5, CBOD5 and TSS
85%
Total Nitrogen
10 mg/L (5-month geometric mean)
Fecal Coliform or E. coli Bacteria
Non-detectable (4 of 7 daily samples)
Fecal Coliform
23 CFU/100 mL (single sample max)
E. Coli Bacteria
15 CFU/100 mL (single sample max)
Source: A.A.C. R18-9-B204, September 30, 2019
mg/L - milligrams per liter; CFU - colony forming units; mL - milliliter(s); BOD₅ - 5-day biochemical oxygen demand;
TSS - total suspended solids; pH - potential of hydrogen; CBOD5 - 5-day carbonaceous biochemical oxygen demand; E. coli - Escherichia coli
3.2.6.2
Arizona Pollutant Discharge Elimination System
Under the Arizona Pollutant Discharge Elimination System (AZPDES) Permit Program, all facilities that
discharge pollutants from any point source into waters of the United States (navigable waters) are
required to get an AZPDES permit. Pollutants can enter waters of the United States from a variety of
pathways, including agricultural, domestic, and industrial sources. For regulatory purposes, these sources
are generally categorized as either point source or non-point sources.
These requirements are defined in the A.A.C. (A.A.C. R18-11-109) and summarized in Table 3.2.
Table 3.2
Arizona Regulated Surface Water Quality Parameters by Water Designation
Regulated Parameter
FBC
A&Ww
AgI
AgL
E. coli
(CFU/100 mL)
126 mean
235 max
--
--
--
pH
9.0 max
6.5 min
0.5 max change due to
discharge
9.0 max
6.5 min
0.5 max change due to
discharge
9.0 max
4.5 min
9.0 max
6.5 min
Temperature
--
3.0º C max increase
--
--
Suspended Solids
--
80 mg/L max
--
--
Dissolved Oxygen
--
6.0 mg/L min
--
--
Source: A.A.C. R18-11-109, September 30, 2019
FBC - full-body contact; A&Ww - aquatic and wildlife, warm water; AgI - agricultural irrigation; AgL - agricultural livestock watering
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3.2.6.3
Reclaimed Water Quality Standards
The City produces Class A+ reclaimed (recycled) water, as defined by the A.A.C., Section R18-11-303. Key
treatment processes required for the A+ designation are secondary treatment, filtration, nitrogen removal,
and disinfection. Additionally, the state requires that the water meet the standards shown in Table 3.3.
Table 3.3
ADEQ Class A+ Reclaimed Water Quality Requirements
Parameter
Units
Value
24-hour Average Turbidity Prior to Disinfection
NTU
≤2
Turbidity of Treated Water (single sample maximum)
NTU
≤5
Fecal Coliform
-
No fecal coliforms in the last 4 of 7 days
Maximum single sample 23/100 mL
Total Nitrogen
ppm
<10
(5-sample geometric mean)
Source: A.A.C. R18-11-303, September 30, 2019
NTU - nephelometric turbidity unit; ppm - parts per million
As the highest class of reclaimed water, Class A+ water can be used for any approved type of direct reuse
listed in Table A of A.A.C. Section R18-11-303.
3.2.6.4
Advanced Water Purification
ADEQ has recently revised the A.A.C to allow for the expansion of advanced water purification (AWP)
(previously referred to as DPR) facilities for potable reuse subject to the Safe Drinking Water Act. While
both direct and indirect potable reuse (IPR) is currently allowed under ADEQ's rules (A.A.C. R18-09-007),
specific regulatory guidance is needed to facilitate water providers' ability to engage in potable reuse.
In Arizona House Bill 2861, the legislature mandated that ADEQ must establish all rules needed
to establish and implement a successful AWP program on or before December 31, 2024. This will include
comprehensive regulatory standards and a permitting process. In 2022, ADEQ established a Technical
Advisory Group (TAG) made up of regulators, municipalities, consultants, and other experts to prepare
recommendations for Arizona's AWP program.
On March 4, 2025, the ADEQ AWP final rules took effect. These rules outline requirements for AWP
implementation and permitting, advanced water treatment, pathogen and chemical and removal
standards, initial source water characterization, enhanced source control, operational requirements,
operator certification, monitoring and reporting, and public communication.
3.2.7
Buckeye Water Conservation and Drainage District
The BWCDD was established in1922 by farmers in the Buckeye Valley and Buckeye Irrigation Company to
maintain the Buckeye Canal and to manage delivery of nearly 130,000 AFY of water for agricultural
purposes. The City has agreements with BWCDD to lease several of their wells that can be used pursuant
to the City's service area right for delivery of water for potable uses. The water quality of this source of
supply would require treatment prior to delivery to customers.
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3.2.8
Roosevelt Irrigation District
The RID was formed in 1923 and owns and operates the RID Main Canal, which delivers irrigation water to
west valley cities, including the City. The City has an agreement with RID to discharge reclaimed water
(referred to as effluent, per the agreement) produced at the Sundance WRF and Central Buckeye WWTP to
the RID GSF. The agreement allows a maximum discharge of 3,000 gpm (4.3 mgd), (5,000 AFY) with a
target, constant flow rate of 1,000 gpm (1.4 mgd). The City has the right to recover, sell or transfer any
credits earned from the City's reclaimed water stored in the RID GSF. The City pays a discharge fee that is
calculated on a dollar per AF basis as well as a monthly connection fee for discharge of reclaimed water to
the RID canal.
3.2.9
Ag-to-Urban Program
The passage of SB1611 in June 2025, created the Ag-to-Urban (A2U) program. Under the A2U program,
eligible IGFR holders within the Phoenix and Pinal AMAs can voluntarily relinquish pumping rights in
exchange for groundwater savings credits. These credits can be applied towards the physical availability of
water required under the Assured Water Program and can be pledged for a CAWS or a DAWS This
program could allow lands located in the City's WPA 4A and 4B planning areas to move forward with
residential development.
3.3
Water Resources Portfolio
The following water resources are the major components of the City's current water portfolio:
1. Groundwater.
2. CAP water.
3. Reclaimed water.
4. Long-term storage credits derived from storage/delivery of reclaimed water.
The yield and delivery capability of each of the City's water resources is impacted to some degree by
hydrologic/climatologic effects, the location of the service area demand, and the capacity of the water
transmission and distribution system infrastructure to deliver water to customers.
The following sections discuss each of the City's water resources from the perspective of resource
evaluation, drought yield implications, and operational considerations.
3.3.1
Groundwater
All the City's physical water supplies delivered to customers are groundwater legally classified as
groundwater or water recovered outside the area of hydrologic impact (AOHI). One of the City's water
management strategies is to increase the amount of storage and recovery within the AOHI, by importing
a sustainable water source to the AOHI. This provides a direct means to replenish aquifers and potentially
increase the amount of water that would be included in the City's physical availability determination in
seeking and maintaining a DAWS.
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3.3.1.1
Resource Evaluation
The City's potable water deliveries are physically comprised of groundwater. With respect to a
Designation, the AWS rules adopted by the ADWR require that for groundwater to be considered
physically available, pumping must not cause the water table to drop below 1,000 feet below land surface
over a 100-year period whether the pumping is by the City or other groundwater users. Demonstrating
groundwater physical availability requires groundwater modeling to acquire a Designation as well as
updates periodically as part of the Designation modification process.
Once it is determined that there is adequate groundwater physically available, the legal character of the
water becomes the focus. As the City seeks to obtain a DAWS, the Department will determine if the City is
eligible to obtain an initial groundwater allowance. Under the AWS rules, the City would be eligible for an
incidental recharge allocation of 4 percent of the total annual water demand that is added to its
Groundwater Allowance Account. The formula is based upon the estimated volume of water recharged to
the groundwater aquifer resulting from the delivery to end users. Therefore, the volume of incidental
recharge will increase as water use increases in the future. This water is distinct not only in terms of how it
is calculated, but in that it is in theory derived from physical water returning to the aquifer. As such, this
water not only helps the City with respect to the legal identity of the water, it is also a physically available
supply that, while minimal in comparison to annual pumping, helps to slightly mitigate physical availability
impacts associated with long-term pumping.
3.3.1.2
Drought Yield Implications
Groundwater pumping is theoretically drought proof and is an excellent physical source during periods of
reduced surface water supplies. This assumes that there are sufficient production wells to meet maximum
day demands (MDDs) and that water quality standards can be met. Groundwater pumping is not subject
to canal delivery limitations, seasonal dry-ups, or drought impacts as surface water supplies are.
3.3.1.3
Operational Considerations
The City operates and maintains existing wells and continues to develop groundwater production wells
throughout its service area, as needed to meet demands. Excess groundwater pumping must be
replenished, and individual production wells may be subject to annual withdrawal rates/volume
limitations. Groundwater quality is also a concern for the City, particularly in southern Buckeye with
respect to total dissolved solids (TDS).
3.3.2
Central Arizona Project
3.3.2.1
Resource Evaluation
The CAP system is designed to deliver 1.415 million AF of Colorado River water annually to central and
southern Arizona in normal water years. Of this total, 620,678 AFY has been contracted to municipal and
industrial (M&I) entities, including the City. The remainder includes CAP Indian and other contracted water
and uncontracted Non-Indian Agriculture (NIA) priority water.
The City has an M&I allocation with a declining annual balance of 223 AF in the year 2023 and levels off to
68 AF. The City has agreements with Del Webb Corporation to deliver this water to the Festival Ranch
Master Planned community for use at the golf course within Festival Ranch. The City also has a CAP NIA
allocation of 2,786 AFY, which was obtained in September 2021.
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3.3.2.2
Drought Yield Implications
The Colorado River is in a nearly 22-year drought. Overallocation of the Colorado River, additional losses
attributed to phreatophyte plant use, evaporation, and other system losses combine into what is called
the "structural deficit". The structural deficit and the drought are contributing to declining water levels in
Lake Mead which affects the amount of deliverable Colorado River water to California, Nevada, Arizona,
and Mexico.
In 2007, interim shortage guidelines were established to reduce water deliveries to Arizona, Nevada, and
Mexico (through Minute 323), once Lake Mead elevations dropped below 1,075 feet. These reduced
deliveries were agreed upon by the parties to develop an intentionally created surplus to slow and
hopefully prevent the water level in Lake Mead from dropping below 1,025 feet, which is the lowest
practical operational level to maintain water deliveries. The 2007 interim guidelines are temporary and
expire in 2026.
In 2019, the USBR recognized that additional mitigation of declining levels in Lake Mead was necessary.
The USBR then facilitated the Drought Contingency Plan (DCP) with separate agreements for the upper
basin states (Colorado, Utah, Wyoming, and New Mexico) and lower basin states (California, Nevada, and
Arizona). The DCP went into effect on May 20, 2019, and effectively builds on the 2007 interim guidelines
by establishing additional voluntary reductions for all the lower basin states as well as reduced water
deliveries to Mexico (via the Binational Water Scarcity Contingency Plan). Additional discussions continue
in hopes to mitigate the factors contributing to the declining water levels in Lake Mead.
Under the DCP, Colorado River resources delivered to Arizona could be reduced between 192,000 AF
(7 percent of total Colorado River Apportionment) and 720,000 AFY (23 percent of total Colorado River
Apportionment). Cuts to specific sub-contractors will be based on water right priority. Table 3.4
summarizes the DCP shortage tiers and identifies the potential impacts to the City's CAP allocation.
Table 3.4
Central Arizona Project DCP Reductions
Tier 0
Mead 1090'
Tier 1
Mead 1075'
Tier 2A
Mead 1050'
Tier 2B
Mead 1045'
Tier 3
Mead 1025'
Tier 4
Mead < 1025'
Percent Cut to NIA (%)
0%
70%
100%
100%
100%
100%
Percent Cut to M&I (%)
0%
0%
0%
5%
15%
30%
Most of the City's CAP water is NIA priority and is at the highest risk of being cut with 70 percent
reduction in a declared Tier 1 shortage. A Tier 2B shortage was declared for 2023, which corresponds to a
100 percent cut of NIA water. In August 2023, the USBR declared a Tier 1 shortage for 2024 following an
abnormally wet winter during 2023, where water levels improved throughout the Colorado River basin.
This reversal from a Tier 2B to Tier 1 shortage may slightly increase availability of NIA water to the City as
well as other communities in Arizona that rely on NIA water.
The DCP provides a good planning framework for the IWMP through the year 2026. However, additional
mitigation actions that may be in place after the 2007 interim guidelines and DCP agreements expire in
2026 are unknown at this time. Adding to this uncertainty, the Department of the Interior (DOI) may enact
actions outside these guidelines that it deems necessary to maintain water levels in Lake Mead. An action
by the DOI outside of these guidelines would be unprecedented and very challenging to plan for.
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3.3.2.3
Operational Considerations
CAP water is ordered for a full year each October prior to the year of the actual water delivery. Water
deliveries are scheduled monthly, and the total annual amount may include all or part of the City's
available supply based upon its available allocation. Each sub-contract contains a provision limiting a
subcontractor to a maximum of 11 percent of their total CAP supply delivered per month (this is
equivalent to a 1.32 peak month to average monthly delivery factor). This peak delivery rate has not been
strictly enforced. While it is not known if and when the peak limit will be enforced, it is prudent for the
City to assume that it could be, and to plan its water orders accordingly. Once the City begins operating
under an AS&R or water treatment plan program, this will become a critical planning element.
The CAP system is an interruptible supply by virtue of the hydrology of the watershed and the demands of
the other six basins states and Mexico. Outages are also possible as a result of catastrophic failures of
pumping equipment, electrical services, or the canal itself. Maintenance of the CAP infrastructure,
including the canal is completed while the system continues to operate. There are no periodic dry-ups on
the main CAP canal system.
The City and EPCOR have executed an agreement for the City to treat and deliver a portion of their CAP
supply at the EPCOR White Tanks Water Treatment Plant (WTP), which receives CAP water through the
Beardsley Canal. Construction of the Buckeye-EPCOR interconnect, located along McDowell Road west of
Verrado Way, is currently underway. This interconnect will be used to convey this treated water to the City.
The Beardsley Canal is taken out of service for maintenance on an annual basis. This shut-down typically
occurs between December and February and this dry-up period should be factored into water operations.
3.3.3
Reclaimed Water
3.3.3.1
Resource Evaluation
The goal of the City's reclaimed water management program is to beneficially use the reclaimed water
produced by the City through either underground storage and recovery or reuse. Direct reclaimed water
use is designated for non-potable water uses such as landscape irrigation and other aesthetic uses.
Reclaimed water that is not directly used is either recharged by the City at its Tartesso WRF or is delivered
to the RID GSF to accrue long-term storage credits (LTSC). As of October 2023, the City has accrued
10,055 AF of LTSCs.
Groundwater pumping can then be characterized as recovery of reclaimed water to comply with the legal
requirements and restrictions that impact groundwater use. These credits are valuable and can be sold or
exchanged for other water supplies.
3.3.3.2
Drought Yield Implications
Like groundwater, reclaimed water is not affected by drought and the supply remains relatively constant.
When the City enacts its Drought Management Plan to temporarily reduce water use, most of the water
saved is likely to occur by reductions in outdoor water use, which does not impact reclaimed water
supplies. However, some reductions in indoor water use may occur that could reduce the reclaimed water
supply.
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3.3.3.3
Operational Considerations
The use of the City's reclaimed water resources is based on current executed agreements between the
City and end users. These agreements specify a certain reclaimed water delivery amount or committed
capacity. The infrastructure for delivering the supply includes storage at the WRFs to help balance the
daily supply and demand.
Excess reclaimed water is delivered either to the RID GSF for later recovery or to remain in storage as
banked water as LTSCs or to the BWCDD where no LTSCs are obtained.
3.3.4
Water Portfolio Summary
Table 3.5 summarizes the current total volume of renewable water supplies in the City's Water Portfolio.
The Town's Service Area right allows groundwater to be pumped to meet demands exceeding 8,324 AFY.
However, groundwater pumped in excess of the amount of renewable water resources that are recovered
to offset pumping, must be replenished through the CAGRD.
Table 3.5
Buckeye Water Portfolio
Description
Normal Year Yield (AFY)
CAP M&I Entitlement
68
CAP NIA Entitlement
2,786
Reclaimed Water(1)
5,470
Total
8,324
Notes:
(1) Year 2023 reclaimed water production value.
3.4
Future Water Supply Opportunities
3.4.1
Harquahala Groundwater Basin
The Harquahala irrigation non-expansion area (INA) is located approximately 35 miles west of Buckeye.
Under current statutes, groundwater from the Harquahala INA can be imported into the Phoenix AMA, if it
can be demonstrated that doing so will not cause unreasonable harm to other nearby water users It is
possible that the CAP canal could be used to wheel the water. However, due to groundwater quality
concerns with arsenic and nitrates, treatment may be required prior to conveying this water in the CAP
canal.
On July 18, 2025, ADWR finalized a Transportation Order that allows groundwater transportation from the
Harquahala Groundwater Basin to the City's service area. This would allow the City to withdraw up to
5,926 AFY for up to 110 years with the cumulative volume to not exceed 592,592 AF of groundwater over
that period.
Harquahala groundwater can be pledged to a 100-year AWS, but it is not a renewable supply. Rather, it is
a fixed volume of water that can be deployed, as needed, to meet demands over a period determined by
the City. While there may be some practical restrictions on delivery requirements, this source does provide
a mechanism for the City to continue to grow and develop as it seeks additional renewable water
resources.
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3.4.2
Reclaimed Water
Reclaimed water is a critical component of the City's water portfolio. It is the only supply that is certain to
be maintained, if not increase, as the City continues to grow. It is also a physical supply of "wet" water that
is reliable even during drought. The City has a lot of flexibility in how reclaimed water can be deployed in
the future including recharge, non-potable reuse (NPR), IPR, exchanges and DPR. With respect to a DAWS,
it is critical that the City can demonstrate that the projected volumes of reclaimed water produced can be
put to beneficial use. If not, ADWR will not count these volumes as renewable supplies in the City's
portfolio presented in a Designation application.
3.4.2.1
Non-Potable Reuse
NPR includes recycled water that is used for non-drinking purposes such as toilet flushing or landscape
irrigation. The City generates A+ recycled water at all of its facilities. The water is used to irrigate golf
courses, turf, and landscape irrigation throughout the City. While NPR can be used to offset potable
demands, it is important that "new" demand is not created that otherwise would not be if a potable
source were being used. The reason for this is because recycled water can also be used indirectly or
directly to meet potable demands, thereby providing more flexibility for the City in managing the total
water portfolio and having a larger impact on meeting the City's water demands.
3.4.2.2
Indirect Potable Reuse
IPR occurs when an environmental buffer is used to separate recycled wastewater from potable water
sources. This includes aquifer recharge and recovery and surface water augmentation. Reclaimed water
from the Tartesso WRF is recharged at the Tartesso USF. Water stored underground by this practice
accrues as long-term storage credits. The Sundance WRF delivers recycled water to a golf course (NPR)
but there are times when excess recycled water is produced which is delivered to the RID GSF, which has
the same effect as recharging to a USF in the City. Recycled water delivered to the RID is used by RID for
irrigation purposes and the City gets long-term storage credits for the groundwater that would have
otherwise been pumped by RID to meet those demands (also known as in-lieu recharge).
IPR is an important water resources strategy because it can increase groundwater physical availability in
the AOHI, if recharge and recovery are done in the same general area. The "safe harbor" area for
groundwater recovery is within a 1-mile radius of a USF. As the City plans future water supplies, recycled
water recharge facilities should be planned at the same time as recovery wells to take advantage of
recovering within the AOHI (safe harbor) whenever possible.
3.4.2.3
Advanced Water Purification
AWP (previously referred to as DPR), is an emerging strategy that uses treated municipal wastewater to
augment public water supplies without the use of an environmental buffer. AWP regulations were
finalized in March 2025. Key treatment requirements of the final rule include pathogen control, chemical
control, total organic carbon (TOC) removal to 2 mg/L, corrosion control, nitrogen management, failure
response time, compliance with existing maximum containment levels (MCLs), and cross-connection
control. While dependent on influent water quality, AWP typically requires the following treatment after
municipal wastewater treatment: tertiary filtration, advanced oxidation, ultra filtration, reverse osmosis
(RO), disinfection, softening, and mineral stabilization.
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One benefit of AWP is the ability to deploy recycled water resources immediately for potable use while
avoiding the additional costs and management required for both recharge facilities (including renewing
WS and USF permits every 20 years) and recovery wells. While costs for AWP are not insignificant, this
option is important for the City to consider as an option in a long-term strategy of acquiring additional
renewable resources, which may include evolving the definition of what the highest and best use of
recycled water is.
3.4.3
Roosevelt Irrigation District
The RID canal crosses central Buckeye south of the I-10 freeway and is the northern boundary of the
WPA 4A described in Chapter 2. The RID service area is approximately coincident with WPA 4A. The RID
canal could be a potential conveyance for a future water supply for the City. RID receives exchanged
effluent (recycled water) from the City of Phoenix 23rd Avenue WWTP, which is to be used only on RID
lands. In the future, it is possible that the agreement under which this water is provided could be
amended to allow the exchanged effluent to be used for M&I purposes.
3.4.4
Buckeye Water Conservation and Drainage District
The Buckeye Canal crosses central Buckeye south of the RID canal and is the northern boundary of the WPA 4B
described in Chapter 2. The BWCDD manages the Buckeye Canal and its service area is approximately
coincident with WPA 4B. Like the RID canal, the Buckeye Canal could be a potential conveyance for a future
water supply for the City. The BWCDD system was developed to divert and deliver water from the Gila River to
agricultural users in the 1800s. Depletions of flows to the Gila River by the late 1920s and the negative impacts
to BWCDD farmers resulted in a lawsuit seeking to enforce their senior priority.
By the mid-1940s this lawsuit was finally resolved and resulted in Salt River Project (SRP) providing water
to BWCDD at Granite Reef Dam, RID delivering groundwater to BWCDD to offset depletions by its
upstream use, and Maricopa Water District (MWD) providing funding for BWCDD operating wells to offset
depletions of MWD's upstream use on the tributary Agua Fria River. In the late 1940s, the City of Phoenix
and SRP proposed construction of flood gates on Horseshoe Dam in the Verde River, BWCDD farmers
filed a lawsuit to prevent further impoundment of water that would otherwise be conveyed to BWCDD.
This lawsuit resulted in a settlement whereby the City of Phoenix agreed to provide effluent to BWCDD to
offset diminished flow in the Gila River.
It is recommended that the City discuss water supply and conveyance options with BWCDD, recognizing
that the existing agreements between them may facilitate development of mutually beneficial water
supply solutions.
3.4.5
Buckeye Waterlogged Area
The area known as the Buckeye Waterlogged Area (BWLA) extends approximately 35 miles along the
Gila River from the confluence of the Salt River to the Gillespie Dam. The BWLA was established in the
Arizona Revised Statue (A.R.S.) in 1988 (A.R.S. 45-411.01), which includes the following provisions:
1. BWLA lands are exempt from irrigation duties.
2. BWLA lands are exempt from conservation requirements for the distribution of groundwater.
3. Exemptions are granted for a portion of groundwater withdrawal fees from within the BWLA.
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The expiration of these exemptions corresponded to the end of the fifth management period of the
Phoenix AMA (December 31, 2024). Through House Bill 2078, these provisions were extended through
December 31, 2034. ADWR is required to issue recommendations on maintaining and extending these
exemptions beyond the current date by November 15, 2031, after additional review of BWLA hydrologic
conditions is completed.
Approximately two-thirds of the BWLA is in Buckeye between the Buckeye Canal and The Gila River. The
remaining parts of the BWLA include portions of the Cities of Phoenix, Avondale, and Goodyear. The City
has an agreement with BWCDD to pump 20,000 AFY of groundwater from the BWLA to the Arlington
Canal, where it is conveyed to the Gila River. This pumping is done to mitigate rising groundwater levels
that can damage water infrastructure in this area. Currently, nine dewatering wells in the BWLA discharge
approximately 20,000 AFY.
The City's service area right enables the City to pump, treat and deliver this water to its customers without
a replenishment requirement. However, the BWLA water average TDS ranges from 2,750 to 3,470 mg/L
and would require reverse osmosis (RO) treatment (and brine disposal) to make this a potable source.
ADWR is in the process of conducting additional hydrogeologic studies, including a projection period
through the year 2050 to determine if there is justification to extend the pumping exemption beyond
2034. Based on ADWR's BWLA Review and Recommendation Report (December 2019), the Department
recommended providing the Arizona governor with a recommendation on extending the pumping
exemption beyond 2034 by November 2031. It is anticipated that ADWR will consult with impacted
irrigation districts as well as Cities and Towns (including Buckeye) within the BWLA on the scope of the
hydrologic review ahead of providing additional recommendations to the Governor of Arizona.
3.4.6
Priority 3 or 4 Colorado River Contract Water
It is possible that Colorado River water rights could be obtained by purchasing land adjacent to the river
that has historically been used for agriculture and conveying it through the CAP canal to the City. Water
contracts executed prior to September 30, 1968, are Priority 3 and have a higher delivery priority than the
CAP. Water contracts executed after this date (including CAP water) are Priority 4.
This type of water purchase and conveyance through the CAP canal would require review and approval
from the Secretary of the Interior, ADWR and CAWCD.
These supplies could be used by the City for recharge and recovery, recharge for long-term storage
credits, or could be treated and directly delivered to customers if/when the City advances to surface water
treatment. Priority 3 water would be less susceptible to drought than the City's CAP NIA water due to its
higher priority on the Colorado River.
Acquiring these supplies could be challenging due to potential local opposition to fallowing farmland and
severing water rights in historically agricultural communities. It could also potentially put the City in the
position of competing with CAWCD as well as other water providers for potential acquisitions and could
be challenging to gain institutional approval from local, state, and federal entities.
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3.4.7
Verde River Sediment Mitigation Project
Bartlett Dam is the lower of two dams on the Verde River system. Accumulation of sediment behind the
upper dam has reduced storage capacity, which is currently approximately one-third of its 132,000 AF
design capacity. The USBR, in partnership with the SRP, undertook an appraisal study to collect data and
stakeholder input. The purpose of this task was to evaluate the needs and perspectives regarding the loss
of storage capacity of the Verde system. As a result of the appraisal process, the USBR, SRP, and several
stakeholders started a feasibility study and launched a steering committee to evaluate options to raise
Bartlett Dam to restore and potentially increase capacity. The City is engaged in this process, which could
potentially result in additional renewable water resources available to the City.
The current feasibility study process is expected to last through the year 2025 and has over 20 steering
committee members. Design and construction of the dam improvements could take up to 10 years beyond
completion of the feasibility study. There is significant potential for the City to be a participating party and
gain access to a portion of additional storage and supply in this project. Due to the level of interest in this
project, the negotiation for specific volumes of water could be challenging. The City is encouraged to stay
engaged in the process and remain open to developing this supply option in its water portfolio.
3.4.8
Long Term Storage Credits
Without a Designation, the City cannot purchase LTSCs of CAP water from other water providers due to
A.R.S. 45-802.01.22, which prohibits the issuance of CAP LTSCs of storage water that cannot be used
directly. Recycled water LTSCs can be purchased without a Designation.
LTSCs do not provide a physical water supply to the City but can be helpful in offsetting groundwater
replenishment obligations for groundwater delivered under the City's service area right.
3.4.9
Colorado River Indian Tribes Water
A bill was introduced to the United States Senate, titled the "Colorado River Indian Tribes Water Resiliency
Act of 2022 (S 3308)" that was signed into law in January 2023. This bill creates the authority to allow the
Colorado River Indian Tribes (CRIT) to provide short-term water supply for entities experience droughts or
shortages across Arizona. This act is consistent with the authority already granted to other tribes. Water
delivered off-reservation is limited to water historically consumed by the CRIT. This water could be made
available through fallowing farming operations, moving to less water-intensive crops, or implementing
more efficient irrigation systems.
The City should look for opportunities to develop lease agreements with the CRIT to obtain short and
long-term renewable supplies. The City would also need to consider conveyance through existing canals
(CAP, SRP, RID, BWCDD, etc.) as well as identify end uses (i.e., recharge and recovery projects or treatment
and direct delivery to customers).
3.4.10 Partnerships
The City should look for opportunities to form partnerships with other communities and/or water
suppliers to obtain additional water supplies. Partnerships that have been developed with other
communities have included agreements where a water supply is developed, treated, and/or wheeled
through existing infrastructure to the benefit of all parties.
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3.4.11
Regional Projects
The City may benefit from regional infrastructure projects that develop and deliver water supplies. These
types of projects may include public private partnerships where private funding can make a project
economically viable. In addition to water supplies, regional projects could also include desalination where
a private partnership provides funding, and the brine or RO concentrate is treated to help make brackish
groundwater a viable water source. By participating with other communities, economies of scale could
make brine management more economically viable.
3.5
Designation of Assured Water Supply
The City may seek to obtain a DAWS, which will enable the City to promote coordinated and orderly
development through the allocation of water resources. It will also support strategic management of the
City's water resources that will sustain economic development and provide a mechanism for establishing a
funding basis (i.e., a water resources impact fee) for providing water and the associated infrastructure
necessary to deliver it to citizens.
Currently, there are more than two dozen major developments that have obtained a CAWS in the City.
When Certificates are issued, they are associated to a specific lot with a legal description and cannot be
transferred. They also do not expire and those Certificates that have already been issued for undeveloped
lots represent significant growth potential for the City.
The Certificates that have been issued in the City identify enrollment in the CAGRD as the means for
meeting the consistency with the management goal requirement of the Phoenix AMA. With this approach,
the individual homeowners are responsible for paying the groundwater replenishment fees (through their
property tax) to offset the groundwater that is delivered to them by the City.
When an area is Designated, the groundwater replenishment obligation becomes the responsibility of the
Designated municipal provider. If the City were to transition to a DAWS for all or a portion of its service
area, the City would be responsible for groundwater replenishment, including CAGRD replenishment fees
if the CAGRD is the mechanism used to demonstrate consistency with the management goal of the
Phoenix AMA.
Through a series of workshops, a strategy was developed to identify opportunities for establishing a
Designation in one or more parts of the City. This approach was discussed with ADWR and can advance
provided that the following guiding principles are met:
The Designated area is hydraulically separate from parts of the City that have active Certificates. The
reason for this is due to the potential for commingling of groundwater and surface water in the same
system, which currently is not allowed by statute between areas that are Designated and areas that are
not.
The City must demonstrate physical, legal, and continuous availability of supplies pledged in a
Designation. Therefore, renewable water resources pledged to a Designated area cannot be
simultaneously pledged to serve demands in another Designated or Certificated area.
Certificates previously issued in the area to be Designated become inactive, with the possibility of
becoming active again if the Designation was not renewed or revoked. While a CAWS is issued for
100 years, a DAWS must be renewed at least every 15 years. The inactivation of Certificates previously
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issued in an area that becomes Designated protects the property owners who obtained Certificates if
maintaining a Designation in that area is no longer possible.
In instances where recharge and recovery are intended, the City must demonstrate that both recharge
and recovery capacity are established for a renewable supply to be recognized and pledged to a
Designation. In practical terms, this means that the intent to recharge reclaimed water is not sufficient
to demonstrate recharge capacity. Rather, the City must demonstrate that there is physical system
capacity to deliver and recharge water and that the project is permittable (defined as both WS and USF
permits are either in place or far enough along in the ADWR review process that there is reasonable
certainty the facility will be granted permits at a known capacity).
Potential new renewable supplies pledged to a Designation must be justified with executed contracts
identifying volumes and time frames for delivery.
ADWR may consider an infrastructure phasing plan when deciding whether to recognize a new supply.
However, the City would need to demonstrate timeframes for deployment of supplies, acquisition of
land rights and/or easements and that the permitting process has begun.
The following sections describe a phased approach to obtaining multiple Designations throughout the
City's service area. Due to the size of the City and significant distances between established areas and
growth areas, the City's complete water system is not hydraulically connected. Therefore, it would not be
feasible to obtain a single DAWS for the entire City.
The phased approach allows the City to target specific growth areas in parts of the City most impacted by
ADWR's June 2023 announcement regarding limited groundwater physical availability in the Phoenix
AMA. Establishing a Designation in these areas enables the City to begin building a foundation of
renewable water supplies and infrastructure that will support development in both the near-term and the
year 2040 planning horizon. These growth areas are expected to be a subset of WPAs. The initial
Designation will also provide a basis for the City to work collaboratively with developers to develop
supplies and construct infrastructure or to recover the costs borne by the City to bring new, renewable
water resources to the City.
Within a Designation, the City must identify separately the current, committed, and projected demands
for the service area. These demand components are defined in statute and summarized as follows:
Current Demands – potable, non-potable, and non-revenue water demand for the "current" or
existing system.
Committed Demands – demand associated with recorded, undeveloped lots. Typically, these
demands are assigned a unit factor ranging between 0.3 AFY per lot (AFY/lot) to 0.4 AFY/lot.
Projected Demands – demand from lots that are anticipated to be recorded, other customer demands
through the term of a Designation.
The sections below identify the total demands required to be met as well as estimates of the current,
committed, and projected demand for each WPA. The WPAs and regional water resources features, and
infrastructure is shown in Figure 3.1.
WR F
WR F
WR F
WR F
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!ã!ã
Gila Bend
Hassayampa
West Salt
River Valley
Rainbow
Valley
Roosevelt Irrigation District Canal
Beardsley Canal
Gila Bend Canal
Arlington Canal
Buckeye Canal
assayampa River
Recharge Facility
6
1
3
5
2
4A
4B
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O
0
4.5
2.25
Miles
Disclaimer: Features shown in this figure are for planning
purposes and represent approximate locations.
Engineering and/or survey accuracy is not implied.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 3.1 Water Resources Service Area
CITY OF BUCKEYE
Legend
!ã
Well
WR F
Existing Water Reclamation
Facility
Existing Recharge Facilities
Reclaimed Water Pipes
Canal
Underground Storage Facility
Buckeye Water Conservation
and Drainage District
Roosevelt Irrigation District
ADWR Groundwater Sub-basin
Buckeye Water Logged Area
City of Buckeye Planning Area
Water Planning Area
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
3-22
3.5.1
WPA 1
WPA 1 is the northernmost portion of the City, between the eastern and western municipal planning area
boundary and north of Peoria Avenue. Master Planned developments in WPA 1 include Floreo at Teravalis
(Floreo), Festival Ranch, North Star Ranch, Sun Valley Villages, and Teravalis. There is current development
within Festival Ranch including some Certificated lots that have not yet developed. The Floreo
development also has Certificates but is not yet developed.
Table 3.6 summarizes the projected water demands, assumed renewable supplies available and the
additional renewable supplies required to serve WPA 1 for the years 2025 through 2040 planning horizon
and for Buildout.
Table 3.6
WPA 1 Water Resources and Demand
Description
Average Annual Water Demand or Supply (AFY)
Year 2025
Year 2030
Year 2035
Year 2040
Buildout
Water Demand(1)
1,900
3,600
4,000
4,700
85,400
Renewable Supply
Reclaimed Water(2)
100
800
1,000
1,300
39,900
Phase-in Groundwater(3)
-
-
-
-
-
Incidental Recharge(4)
76
144
160
188
3,416
CAP M&I(5)
68
68
68
68
68
CAP NIA(6)
-
-
-
-
-
Total Renewable Supply
244
1,012
1,228
1,556
43,384
Water Demand/Renewable
Supply Surplus or (Deficit)
(1,656)
(2,588)
(2,772)
(3,144)
(42,016)
Notes:
(1) Total water demand, including non-revenue water.
(2) The first 900 AFY of reclaimed water produced in this area is conveyed to the Festival Golf Course for irrigation. Additional reclaimed
water volumes would be available to the City as a reclaimed water resource.
(3) Phase-in groundwater allowance is not assumed to be granted by ADWR if a DAWS is obtained after the year 2025.
(4) Calculated as 4 percent of the total demand.
(5) Assumed long-term CAP M&I allocation of 25 AFY (City) plus 43 AFY (Valencia Water Company conveyed to the City in 2017).
(6) Assumed the City's CAP NIA allocation of 2,786 AFY is not available to be pledged towards a Designation.
Based on the projected demands for the year 2025, the City would not have sufficient renewable water
resources to establish a Designation in WPA 1 unless it acquired an additional 1,656 AFY of renewable
supply. This conclusion assumes:
The City's CAP NIA allocation is not available to be pledged towards a Designation.
The maximum required reclaimed water deliveries to the Sun City Festival Golf Course are 900 AFY.
For the years 2030 through 2040, the City will need to continue to obtain additional renewable supplies to
meet the projected demands or demonstrate sufficient groundwater physical availability and the
associated CAGRD replenishment capacity to meet between 2,588 and 3,144 AFY of water demand,
beyond the City's currently estimated renewable supplies for WPA 1.
2025 INTEGRATED WATER MASTER PLAN
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CITY OF BUCKEYE
3-23
As reclaimed water becomes available in WPA 1, it is critical that the City's reclaimed water production,
recharge and recovery capacity is sized to be equal to or greater than the estimated volumes of reclaimed
water that are anticipated to be available to the City after deliveries for golf course irrigation. This will
require reclaimed water recharge and recovery capacity of at least 800 AFY for year 2030 and 1,300 AFY
for year 2040.
If the City acquires the following supplies discussed in Section 3.4, any of these could be used to meet
WPA 1 demands:
Priority three or four Colorado River Contract Water delivered through the CAP canal.
Bartlett Dam New Conservation Space (NCS) (if an agreement was developed between the City and
another entity to exchange Bartlett Dam NCS water with CAP water that could be delivered through
the CAP canal).
CRIT water delivered through the CAP canal.
Imported groundwater from the Harquahala INA delivered through the CAP canal or other constructed
conveyance.
Long-term agreements for water delivery with developers.
Table 3.7 summarizes the growth potential for WPA 1, which is represented by both the committed and
projected demands. Committed demands are defined as stated in Section 3.5 to represent the recorded,
undeveloped lots that are anticipated to develop through Buildout. The projected demands represent
additional growth that is expected to occur through the year 2040.
Table 3.7
WPA 1 Growth Potential
Demand Component
WPA 1 (AFY)
Current (Exiting Connections, year 2023)
1,800
Committed (Recorded, Undeveloped Lots through Buildout)
2,700
Projected through 2040
1,500
Total
6,000
As an example, assuming an average unit water demand of 0.4 AFY/lot which is the water use assumption
by ADWR, the committed demands in WPA 1 are equivalent to approximately 6,750 homes (2,700 AFY /
[0.4 AFY/lot] = 6,750 lots). This represents the growth that could occur under the existing Certificates and
can be achieved regardless of whether the City obtains a DAWS. The additional 1,500 AFY of demand
through the year 2040 planning period is equivalent to approximately 3,750 homes. This growth is most
likely to occur if the City were to obtain a Designation. It is still possible that this development could occur
with Certificates; however, they would need to identify a source of supply other than groundwater, to be
consistent with ADWR's June 2023 statement regarding limited groundwater availability for new growth in
the Phoenix AMA.
2025 INTEGRATED WATER MASTER PLAN
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CITY OF BUCKEYE
3-24
3.5.2
WPA 2
WPA 2 is located in northern Buckeye between the western municipal planning area boundary and the
west side of the White Tank Mountains, and between Northern Avenue on the north and the I-10 freeway
on the south. Master Planned developments in WPA 2 include Elianto, Sun Valley South, Tartesso, Tartesso
West, Valle Del Rio, and Valle Del Sol. There is current development within Tartesso and Tartesso West
including some Certificated lots that have not yet developed. The Elianto development also has
Certificates but is not yet developed. The City is currently in the process of securing an Alternative
Designation of Assured Water Supply in WPA 2.
Table 3.8 summarizes the projected water demands, assumed renewable supplies available and the
additional renewable supplies required to serve WPAs 1 and 2 for the years 2025 through 2040 planning
horizon and for Buildout.
Table 3.8
WPA 2 Water Resources and Demand
Description
Average Annual Water Demand or Supply (AFY)
Year 2025
Year 2030
Year 2035
Year 2040
Buildout
Water Demand(1)
1,600
1,900
2,500
3,000
43,400
Renewable Supply
Reclaimed Water(2)
700
900
1,200
1,500
20,700
Phase-in Groundwater(3)
-
-
-
-
-
Incidental Recharge(4)
64
76
100
120
1,736
CAP M&I(5)
-
-
-
-
-
CAP NIA(5)
-
-
-
-
-
Total Renewable Supply
764
976
1,300
1,620
22,436
Water Demand/ Renewable
Supply Surplus or (Deficit)
(836)
(924)
(1,200)
(1,380)
(20,964)
Notes:
(1) Total water demand, including non-revenue water.
(2) The reclaimed water used for the Alternative Designation of Assured Water Supply (ADAWS) will be subject to a 25% cut to the aquifer.
(3) Phase-in Groundwater allowance is not assumed to be granted by ADWR if a DAWS is obtained after the year 2025.
(4) Calculated as 4 percent of the total demand.
(5) Assumed CAP M&I and NIA water pledged to WPA 1.
The City is working to obtain an ADAWS for WPA 2. Based on the projected demand for the year 2025, the
City would need to demonstrate 836 AFY of renewable water resources to establish an ADAWS in WPA 2.
The City would need to demonstrate 924 AFY of renewable supplies by the year 2030 and 1,380 AFY of
renewable supplies by the year 2040 to maintain the ADAWS. This conclusion assumes:
The City's CAP NIA allocation is not available to be pledged towards a Designation.
Reclaimed water generated at the Tartesso Water Reclamation Facility will be stored and recovered as
an additional water supply.
The City's reclaimed water production, recharge and recovery capacity is equal to or greater than
700 AF for year 2025 and up to 1,500 AFY for year 2040.
If the City chooses to extend the Designated Service Area into WPA 1, it will require the City to obtain
additional renewable supplies. It will also require that the water supply infrastructure between WPAs 1
and 2 be hydraulically connected.
2025 INTEGRATED WATER MASTER PLAN
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CITY OF BUCKEYE
3-25
If the City acquires the following supplies discussed in Section 3.4, any of these could be used to meet
WPA 2 demands:
Priority 3 or 4 Colorado River Contract Water delivered through the CAP canal.
Bartlett Dam NCS (if an agreement was developed between the City and another entity to exchange
Bartlett Dam NCS water with CAP water that could be delivered through the CAP canal).
CRIT water delivered through the CAP canal.
Imported groundwater from the Harquahala Irrigation Non-expansion Area (INA) delivered through
the CAP canal or other constructed conveyance.
Table 3.9 summarizes the growth potential for WPA 2, which is represented by both the committed and
projected demands. Committed demands are defined as stated in Section 3.5 to represent the recorded,
undeveloped lots that are anticipated to develop through Buildout. The projected demands represent
additional growth that is expected to occur through the year 2040.
Table 3.9
WPA 2 Growth Potential
Demand Component
WPAs 1 and 2 (AFY)
Current (Exiting Connections, year 2023)
1,400
Committed (Recorded, Undeveloped Lots through Buildout)
2,900
Projected through 2040
1,400
Total
5,700
Assuming an average unit water demand of 0.4 AFY/lot, the committed demand in WPA 2 is equivalent to
approximately 7,250 homes (2,900 AFY / [0.4 AFY/lot] = 7,250 lots). This represents the growth that could
occur under the existing Certificates and can be achieved regardless of whether the City obtains a DAWS.
The additional 1,400 AFY of demand through the year 2040 planning period is equivalent to
approximately 3,500 homes.
3.5.3
WPA 4A and 4B
WPA 4A is located in central Buckeye between Johnson Road on the west, the eastern municipal planning
area boundary on the east, the RID canal on the north and the Buckeye Canal on the south. Master
Planned developments in WPA 4A include Copper Falls and Henry Park. WPA 4B is located in central
Buckeye, south of WPA 4A between the Buckeye Canal on the north, the Gila River on the south and the
City's municipal planning boundary on the east and west. WPA 3 is located north of WPA 4A and has
limited water supply potential because surface water supplies from the canals are not a possibility and the
aquifer is thinner, limiting groundwater supplies. Therefore, the priority in this plan is to focus on
WPAs 4A and 4B in this IWMP. There are no Master Planned communities in WPA 4B.
Table 3.10 summarizes the projected water demands, assumed renewable supplies available and the
additional renewable supplies required to serve WPAs 4A and 4B for the years 2025 through 2040
planning horizon and for Buildout.
2025 INTEGRATED WATER MASTER PLAN
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CITY OF BUCKEYE
3-26
Table 3.10
WPAs 4A and 4B Water Resources and Demand
Description
Average Annual Water Demand or Supply (AFY)
Year 2025
Year 2030
Year 2035
Year 2040
Buildout
Water Demand(1)
4,700
6,300
7,600
9,500
40,600
Renewable Supply
Reclaimed Water(2)
1,400
2,200
2,900
3,700
18,600
Phase-in Groundwater(3)
115
115
115
115
115
Incidental Recharge(4)
188
252
304
380
1,624
CAP M&I(5)
-
-
-
-
-
CAP NIA(5)
-
-
-
-
-
Total Renewable Supply
1,703
2,567
3,319
4,195
20,339
Water Demand/ Renewable
Supply Surplus or (Deficit)
(2,997)
(3,733)
(4,281)
(5,305)
(20,261)
Notes:
(1) Total water demand, including non-revenue water.
(2) Assumes 800 AFY of reclaimed water produced in this area is conveyed for non-potable reuse. The remainder of reclaimed water
produced is assumed to be available for recharge and recovery.
(3) Phase-in Groundwater allowance is assumed to be granted by ADWR for developments in Buckeye that were served by groundwater
prior to the 1995 AWS Rules.
(4) Calculated as 4 percent of the total demand.
(5) Assumed CAP M&I and NIA water pledged to WPA 1.
Based on the projected demand for the year 2025, the City does not have sufficient renewable water
resources to establish a Designation in WPAs 4A and/ or 4B. Between 2,997 and 5,305 AFY of additional
renewable supplies are needed to meet projected demands for the years 2025 and 2040, respectively. This
conclusion assumes:
The reclaimed water deliveries for non-potable reuse do not exceed 800 AFY.
The City's reclaimed water production, recharge and recovery capacity is equal to or greater than
1,400 AFY for year 2025 and can be expanded to 3,700 AFY by year 2040.
Extending the Designated service area into WPA 4A and/ or 4B or establishing separate Designations for
WPAs 4A and 4B will require the City to obtain additional renewable supplies to meet the projected
demands or demonstrate sufficient groundwater physical availability and the associated CAGRD
replenishment capacity to meet between 2,997 and 5,305 AFY of water demand, beyond the City's
currently estimated renewable supplies for WPAs 4A and 4B.
If the City acquires the following supplies discussed in Section 3.4, any of these could be used to meet
WPAs 1 and 2 demands:
Priority 3 or 4 Colorado River Contract Water delivered through exchanges to the RID or Buckeye
canal.
Bartlett Dam NCS (if an agreement was developed between the City and another entity to wheel water
through the RID or Buckeye canal).
CRIT water delivered through exchanges to the RID or Buckeye canal.
Imported groundwater from the Harquahala INA delivered through the CAP canal/ exchanges or
another constructed conveyance.
Other surface water supplies delivered through the RID or Buckeye Canals.
2025 INTEGRATED WATER MASTER PLAN
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CITY OF BUCKEYE
3-27
Table 3.11 summarizes the growth potential for WPAs 4A and 4B, which is represented by both the
committed and projected demands. Committed demands are defined as stated in Section 3.5 to represent
the recorded, undeveloped lots that are anticipated to develop through Buildout. The projected demands
represent additional growth that is expected to occur through the year 2040.
Table 3.11
WPAs 4A and 4B Growth Potential
Demand Component
WPAs 4A and 4B (AFY)
Current (Exiting Connections, Year 2023)
3,200
Committed (Recorded, Undeveloped Lots through Buildout)
3,900
Projected through 2040
3,700
Total
10,800
Assuming an average unit water demand of 0.4 AFY/lot, the committed demands in WPAs 4A and 4B are
equivalent to approximately 9,750 homes (3,900 AFY/[0.4 AFY/lot] = 9,750 lots). This represents the
growth that could occur under the existing Certificates and can be achieved regardless of whether the City
obtains a DAWS. The additional 3,700 AFY of demand through the year 2040 planning period is equivalent
to approximately 9,250 homes.
Table 3.12 summarizes the growth potential for WPAs 1, 2, 4A, and 4B, which is represented by both the
committed and projected demands.
Table 3.12
WPAs Growth Potential – Water Demand
Demand Component
Average Annual Demand (AFY)
WPA 1
WPA 2
WPA 4A
WPA 4B
Total
Current (Exiting Connections,
Year 2023)
1,800
1,400
2,300
900
6,400
Committed (Recorded, Undeveloped
Lots through Buildout)
2,700
2,900
3,800
100
9,500
Projected through 2040
1,500
1,400
2,600
1,100
6,600
Total
6,000
5,700
8,700
2,100
22,500
Table 3.13 summarizes the number of potential lots that can be built based on the WPA growth potential.
Table 3.13
WPAs Growth Potential – Potential Lots
Demand Component
Estimated Number of Residential Lots(1)
WPA 1
WPA 2
WPA 4A
WPA 4B
Total
Committed (Recorded, Undeveloped
Lots through Buildout)
6,750
7,250
9,500
250
23,750
Projected through 2040
3,750
3,500
6,500
2,750
16,500
Total
10,500
10,750
16,000
3,000
40,250
Note:
(1) Assumes 0.4 AFY water demand per lot.
2025 INTEGRATED WATER MASTER PLAN
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CITY OF BUCKEYE
3-28
There are approximately 23,750 currently Certificated lots that could be built in WPAs 1, 2, 4A, and 4B.
Note that the City's estimate of currently certificated lots is approximately 26,000. This difference likely
results in varying actual unit water demands per lot on the actual certificates, which range from 0.3 to
0.4 AFY/lot, as noted in Section 3.5. There are an additional estimated 16,500 lots that could be built
through the year 2040 if the City were to obtain a DAWS. In order to serve the current, committed and
projected demand for WPAs 1, 2, 4A and 4B through the year 2040 would require the City to acquire and
maintain approximately 22,500 AFY of renewable water supplies.
3.6
Recommendations
The following recommendations are provided to guide the City with respect to water resources planning
and obtaining a DAWS:
1. Maximize underground water storage within the City's service area and within the AOHI of the City's
recovery wells to promote restoration of groundwater levels and maintain groundwater physical
availability.
2. Develop recharge and recovery projects specifically for reclaimed water to maximize the benefit of
this valuable resource in the City's water portfolio. Demonstrating that the City can utilize 100 percent
of its reclaimed water supply will be critical to obtaining a Designation.
3. Continue to engage with SRP in discussions regarding Bartlett Dam NCS surface water.
4. Stay informed of and pursue opportunities for water exchanges, Priority 3 or 4 Colorado River water
rights, CRIT leases, or other supply acquisitions that are advantageous to the City.
5. Continue to progress concepts and infrastructure needed to bring Harquahala groundwater to the
City, including discussions with CAWCD regarding conveyance of imported groundwater through the
CAP canal.
6. Identify and engage in potential future opportunities to partner or exchange water resources with
neighboring communities.
7. Continue discussions with RID and BWCDD for both water supply and water conveyance
opportunities that may be advantageous to the City.
8. Explore opportunities to have new developments (including high water use industries) bring
renewable supplies with them as a condition of development approval.
9. Continue advancement of the City's water conservation program, strengthened by public policy to
drive effective demand reduction results.
10. Continue discussions with ADWR regarding obtaining an ADAWS for WPA 2 and to specifically
identify what will be needed to demonstrate physical, legal, and continuous availability of water
supply to WPA 1.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-1
CHAPTER 4 WATER MASTER PLAN
4.1
Introduction
Chapter 4 presents the water system evaluation for the City as part of the 2025 IWMP. The purpose of the
IWMP is to identify the water system infrastructure needed for growth and capacity improvements to
serve the City's needs through the 2030, 2035, and 2040 infrastructure planning periods. The timing of
many infrastructure additions is set based on growth or flow triggers that are set to determine when the
infrastructure is required. To develop the Master Plan, a hydraulic model was prepared to evaluate the
capacity of the distribution system in each infrastructure planning period. Proposed future infrastructure
was evaluated, the timing of future water supply infrastructure expansions was determined, and a plan for
future distribution system expansion was developed. Actual development in the future may occur
differently than planned, and adjustments may need to be made in infrastructure construction to align
with development.
The outline of this chapter is as follows:
1. Water System Overview – This section contains a summary of the overall water system and the
strategies that will be implemented in the plan.
2. Performance Criteria – This section documents the performance criteria used to evaluate water
system infrastructure, which is based to a large extent on the City's EDS.
3. Water Model – This section explains the hydraulic model and software used in the IWMP.
4. Master Plan by Water Service Area – This section presents the Master Plan, including infrastructure
projects arranged by these water service areas: Sun City Festival, Floreo at Teravalis (Floreo), Tartesso,
and Central Buckeye. The discussion on each water service area contains the following subsections:
a. 2024 Water Infrastructure Description.
b. Demand Projections and Planned Future Infrastructure.
c.
Water Distribution System Evaluation.
d. Water System Infrastructure Improvement Program.
5. Conclusions and Recommendations – This section summarizes major recommendations for the City.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-2
4.2
Water System Overview
This IWMP study area covers those portions of the City that are north of the Gila River and that do not
receive water service from EPCOR and Arizona Water Company. The study area covers approximately
432 square miles, although a portion of the land is mountainous and will not be developed. In the first
phase of the IWMP, the planning area was grouped into six different WPAs (formerly called DAWS
planning areas) that were originally seen as areas that could possibly become a designation of AWS. Even
without a DAWS, these geographical areas are significant because each area has a different water supply
strategy and, in some cases, has hydraulically separate service areas.
This IWMP covers growth through 2040, which is only a portion of the land in each DAWS planning area.
The land areas planned for growth include developments that have a CAWS and land zoned industrial or
commercial that may not need a CAWS if land parcels are not subdivided into more than six parcels. The
land parcels are grouped by the planning periods within which the land is expected to develop: 2030,
2035, and 2040. Therefore, the infrastructure planned in this Master Plan focuses on the land areas
planned for development before 2040.
Figure 4.1 presents the WPAs and the land areas that are planned to develop by 2040, colored by
planning period.
ntersburg
74
Circle City
Wittmann
Morristown
10
10
Dixie
Allenville
Palo Verde
Buckeye
60
Liberty
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
WPA 1
WPA 3
WPA 5
WPA 2
WPA 4A
WPA 4B
Festival
Ranch
Festival
Ranch
Teravalis
Sun Valley
Villages
I and II
North Star
Ranch
Farallon
WTP 5
WTP 11
Westpark WTP
Floreo WTP
Tartesso WTP
Cipriani WTP
Sun City
Festival WTP
Grand
View WTP
Sundance
North Airport
Jackie A.
Meck WC
Last Revised: October 29, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch02\
O
0
3
1.5
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: City of Buckeye.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 4.1 Water Planning Areas and Development Planning Periods
CITY OF BUCKEYE
Legend
Water Planning Area
3
Q
Water Campus or WTP
3
Q
Proposed WTP
Projected Development Phase
Existing
2030
2035
2040
Post 2040
Master Planned
Community
Tartesso West
Elianto
West Phoenix Estates
Sun Valley South
Buckeye Canal
RID Canal
2025 INTEGRATED WATER MASTER PLAN
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CITY OF BUCKEYE
4-4
4.2.1
WPA Water Infrastructure Development Strategy
Each WPA has unique water supplies and water supply strategies that influence the infrastructure that is
being planned in each WPA. This section provides background information, and the reasoning behind the
water supply strategies to be employed in each WPA, and then a more detailed evaluation of each area is
presented in Section 2.5.
4.2.1.1
WPA 1
WPA 1 currently includes two developments: the Sun City Festival development and the Floreo
development. Sun City Festival is currently partially developed and is expected to fully develop by 2040.
Floreo is currently being constructed. Both developments have a CAWS. Water for both developments is
supplied by wells.
The City has a CAP allocation and a NIA allocation. In addition, the City has acquired a water allocation
from the Harquahala Valley that could be delivered via the CAP canal after the City takes possession of
the water. In addition, the City is participating in raising the Bartlett Dam that will provide additional water
supplies that could be delivered via the CAP canal through an exchange. By 2040, the City may be able to
construct a surface water treatment plant (SWTP) that treats surface water from the CAP canal. This
treated water can serve the Sun City Festival development, and a transmission main could be constructed
along Sun Valley Parkway to serve the Floreo development.
WPA 1 also includes the Sun Valley Villages development south of the CAP canal. North of the canal, there
is the North Star Ranch, additional Sun City Festival development, and Teravalis developments. None of
these primarily residential developments have a CAWS, although North Star Ranch has a small amount of
surface water. Because these developments do not have a CAWS or a sufficient water supply, these
developments are not expected to begin developing by 2040 unless additional water supplies can be
obtained earlier.
4.2.1.2
WPA 2
WPA 2 currently has the Tartesso and West Phoenix Estates developments. Both developments are supplied
by wells. Additional planned developments include Elianto, Tartesso West, Tartesso East, and Sun Valley
South.
The Tartesso water system is planned to expand to include the other developments with a DAWS. Water
infrastructure will be added and interconnected as development occurs, so the water system increases in
reliability as additional wells are added. In the future, if water supplies are obtained that could be
delivered through the CAP canal, a treatment plant may be constructed at the CAP canal, and a
transmission main may be constructed down the Sun Valley Parkway, then the Tartesso water system
could be augmented with surface water.
The West Phoenix Estates development is an established area that is currently served by two wells. The
wells need to be rehabilitated, so the West Phoenix Estates development could be connected to the
Tartesso water system indefinitely to obtain a water supply.
2025 INTEGRATED WATER MASTER PLAN
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4-5
Commercial development along Sun Valley Parkway is being planned, as well as a development that
includes a hospital located east of the Sun Valley Parkway and north of I-10. The development along Sun
Valley Parkway would receive water from Tartesso and is not expected to require a CAWS. The new
development east of Sun Valley Parkway does not have a CAWS and will have a separate water system
that is the responsibility of the developer and, therefore, not included in the IWMP.
4.2.1.3
WPA 3, 4A, and 4B
WPA 3, 4A, and 4B comprise Central Buckeye. Currently, water in each planning area comes from wells.
These planning areas were established based on the possibility of serving each planning area using
surface water in the future at some time beyond the 2040 planning period of this IWMP. In the future,
water that could come from the RID Canal and the BWCDD Canal would likely need to be used exclusively
within the service area of each canal. WPA 3 is located north of the RID Canal and, therefore, would not be
eligible for surface water from either canal. WPA 4A covers the service area of the RID Canal, and WPA 4B
covers the service area of the BWCDD Canal. As the City grows and works to acquire additional water
resources, the infrastructure needed to deliver water should consider the possibility of infrastructure
required to deliver surface water.
The water delivery system in Central Buckeye is mostly connected except for the City airport water system
in WPA 3 and Bulfer water system in WPA 4A that operate as stand-alone water systems. These two
isolated water systems could become connected to the rest of the water system as growth reaches these
areas, but connection is not expected by 2040.
WPA 3 currently has two groundwater treatment facilities: Sundance WTP and North Airport Road WTP.
The Sundance WTP was planned to serve only the Sundance development. Wells delivering water to the
Sundance WTP are located primarily in the Sundance development. Additional wells, storage, and
treatment is being planned for the Sundance site. The North Airport Road WTP obtains water from two
nearby wells. A third well was drilled recently and is being equipped. Additional wells are planned that
would send water to the North Airport Road WTP, which will eventually require additional treatment,
storage, and pumping expansions to manage the additional well water. Water from the North Airport
Road WTP can serve any part of the Central Buckeye water delivery system. The City has a 12-inch pipeline
connection to the EPCOR water system so that any City water right that can be delivered through the CAP
canal can be delivered to the White Tanks WTP and then wheeled to Buckeye to the water distribution
system in WPA 3. These water rights include the City's CAP allocation, the NIA allocation, Harquahala
water, and additional water supplies obtained from raising the Bartlett Dam. Water from the Bartlett Dam
would need to be delivered through an exchange with another municipality or wheeled through SRP and
RID canals.
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The Cipriani development, located primarily in WPA 3 in western Central Buckeye, was recently converted
from being primarily a residential area to an industrial area so that growth can occur without requiring a
CAWS and may include data centers. Cipriani is likely to develop before adjacent areas, so Cipriani will
need to be a stand-alone water system with its own wells and WTP up to 2040. The City currently operates
Wells 12, 13, and 14, which are located just west of Cipriani. This water is currently delivered to Historic
Buckeye. The water rights for these wells are held by the landowner. When the land begins to develop,
possibly in the next couple years, water from these wells will supply developments on the landowner's
land, and Historic Buckeye will need to be supplied through the Reach pipeline from the North Airport
Road WTP. Cipriani may be served by Wells 12, 13, and 14, as well as additional wells. These wells
currently do not require treatment, so the need for treatment in Cipriani will depend on groundwater
quality from new wells.
The Westpark (WSF-2) WTP will be located in the Westpark development and will serve the area between
the RID canal and I-10, west of Palo Verde Road and generally east of SR-85. Wells will be developed
within Westpark and generally within the portion of Westpark that was previously in the
Westwind/SilverRock areas.
WPA 4A has two groundwater treatment facilities: Jackie A. Meck and Farallon WTPs. The Jackie A. Meck
WTP is planned to treat up to 16 mgd of groundwater. The Jackie A. Meck WTP currently has arsenic
treatment, and RO treatment is planned. Once the RO treatment processes are constructed, brine from
the RO treatment process will be delivered to the 96-inch Arizona Public Service (APS) pipeline when the
Palo Verde Nuclear Generating Station is accepting brine. When APS is not accepting brine, the City will
endeavor to manage well pumping so that the wells requiring RO treatment are not used . The City is
planning to make the Jackie A. Meck WTP a regional water supply facility. Water to supply the Jackie A.
Meck WTP will come from nearby wells when possible, and when not, water will need to come from wells
farther to the east. The Farallon WTP is under construction and will initially receive water from two wells
that have wellhead RO treatment. Additional wells and water treatment equipment will be added to serve
growth as it occurs. The Farallon WTP is planned to serve land east of State Route 85 (SR 85), but there
are sleeves across the highway to connect a water distribution system on the west side of SR 85, so
Farallon could serve development west of SR 85 until water supply infrastructure can be constructed.
Three additional WTFs are planned in WPA 4A: WTP 5,WTP 11, and Grand View WTP. WTP 5 is planned to
be located near the intersection of Turner Road and Southern Avenue along the Zone 1 and Zone 2
boundary so water can be easily delivered to both zones. If well water pumping capacity or quality is
limited near WTP 5, then wells would be constructed to the west, closer to the Hassayampa River channel,
where water may be more plentiful and have a lower TDS level. WTP 11 is planned on the north side of
the BWCDD canal and west of Verrado Way to serve the Liberty area which is located in the southeast
corner of Central Buckeye when growth occurs. The water supply would come from new wells constructed
in the vicinity of WTP 11. The Grand View WTP is planned just north of the Buckeye Canal on Dean Road.
This plant will be co-located with the Grand View WRF which will provide the City with the option of
advanced water purification in the future in addition to surface water treatment from the canal. This WTP
will serve a portion of the City generally between MC-85 and the RID canal, east of Dean Road. Depending
on the well water quality, RO may be required.
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The portion of Historic Buckeye in WPA 4B has older, smaller water mains that are susceptible to breaks if
water pressures are too high. For this reason, portions of Historic Buckeye operate at a lower pressure
than adjacent lands. The City has been working towards replacing these mains, and when the mains are
replaced, then Historic Buckeye will operate at the same hydraulic grade line (HGL) as Pressure Zone 1.
WPA 4B does not currently have any potable wells or water supply facilities because WPA 4B is located in
the BWLA and has brackish groundwater that would require RO treatment to obtain water that is suitable
for potable water use. Currently, groundwater can be withdrawn from this area without a groundwater
replenishment obligation until at least 2034 or a later date, depending on a ruling to be made by the
ADWR in 2034. Due to uncertainty in how the ADWR will make future decisions regarding the
replenishment obligation in the BWLA, and due to the cost of RO treatment, brackish groundwater
treatment is not planned by 2040. Water supplies to serve WPA 4B will need to come from WPA 3 and
WPA 4A. Beyond 2040, water supplies serving WPA 4B could come from an RO facility that uses brackish
groundwater or the Buckeye Canal if a water resource is obtained for water in that canal.
WPA 5 does not receive water from Buckeye, and therefore, this area is not evaluated in this IWMP. Most of
WPA 5 is served by EPCOR with some water service being provided by Arizona Water Company. The City has no
plans to serve water to these areas in the future. Buckeye does provide wastewater service to a portion of WPA 5.
4.3
Water System Performance Criteria
Performance criteria define the requirements for an adequately designed water distribution system.
Performance criteria include items such as water supply redundancy, water system reliability, storage,
pumping, minimum pressures, fire flow, and operational requirements. Performance criteria are more
general than design criteria, providing specific requirements to be incorporated into new infrastructure.
The City's EDS, revised in 2025, governs the design of future water infrastructure in the City. The IWMP
does not replace engineering design in compliance with the City's EDS and code requirements.
The water performance criteria that are applied in the IWMP are described below.
4.3.1
Demand Peaking Factors
Peaking factors (PF) are established to calculate the MDD and peak hour demands (PHDs) from average
daily demands. PF are as follows:
MDD equals 1.8 multiplied by average day demands (ADD).
PHD equals 3.0 multiplied by ADD.
4.3.2
Wells
The firm well capacity serving an area is calculated assuming that each well operates no more than
18 hours per day. In addition, each service area needs to have 15 percent redundant well capacity with a
minimum of one redundant well.
4.3.3
Pump Stations
Each pump station provides water for (a) PHD or (b) MDD plus fire flow, whichever is larger, with the
largest pump in the station out of service. When multiple pump stations serve a pressure zone, the
demand needs to be satisfied with the largest pump in each station out of service.
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4.3.4
Water Storage
The required water storage for one or more pressure zones is the maximum of the following four criteria:
1. Peak Hour Storage – Four hours of PHD without using more than 80 percent of the total storage
capacity without wells.
2. Fire Flow – 25 percent of the MDD plus the highest required fire storage in the pressure zone.
3. Operating Storage – 20 percent of the MDD.
4. Emergency Storage – ADD without using more than 80 percent of the total storage capacity without
wells.
Criteria No. 4 – Emergency storage is the controlling criteria for sizing storage tanks for the range of flows
in Buckeye and will be used in storage capacity evaluations.
The recommended minimum acceptable new storage tank size in the City is 1 million gallons (MG) for
land areas that are planned to develop and ultimately require more storage.
4.3.5
Transmission/Distribution Mains
Transmission and distribution main minimum sizes must meet the following criteria:
The minimum pipe size for water mains is 8 inches.
The minimum pipe size for water mains in half-mile streets and collector streets is 12 inches.
The minimum pipe size for water main in mile streets and arterial streets is 16 inches.
In no case will there be less than one 16-inch main connecting to each adjacent booster station or
adjacent development. The 16-inch main connection will be coordinated with the adjacent booster
service area.
The water velocity criteria in water mains are as follows:
Velocity less than or equal to 5 feet per second (fps) for average day, maximum day, and peak hour
flows.
Velocity less than or equal to 10 fps for maximum day plus fire flow.
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4.3.6
Pressures
The City's service area covers a large elevation range. To provide consistent pressure throughout the
service area, the City has defined pressure zone boundaries based on elevation, summarized in Table 4.1.
Table 4.1
City of Buckeye Pressure Zone Boundary Elevations
Pressure Zone
Low Elevation (feet)
High Elevation (feet)
1
820
950
2
950
1,080
3
1,080
1,210
4
1,210
1,340
5
1,340
1,470
6
1,470
1,600
7
1,600
1,730
8
1,730
1,860
9
1,860
1,990
10
1,990
2,120
The City requires that the distribution system satisfy the following criteria:
50 pounds per square inch (psi) shall be maintained during average, maximum day, and peak hour
conditions.
20 psi shall be maintained during max day plus fire flow conditions.
The maximum pressure in the distribution system shall not exceed 110 psi.
The 2025 City of Buckeye design standards require a service line pressure reducing valve (PRV) on all
residential lots.
4.3.7
Fire Flows
The City's fire flow criteria are based on the type of development as summarized below:
Low and medium density (less than 8 DU/ac) – 1,500 gpm for 2 hours.
Active adult (maximum 8 units per acre) – 1,500 gpm for 2 hours.
High density (more than 8 units per acre, including apartments) – 2,000 gpm for 4 hours.
Commercial/mixed use – 3,000 gpm for 4 hours.
Schools – 3,000 gpm for 4 hours.
Malls/retail areas – 4,000 gpm for 4 hours.
Industrial/warehouse – 5,000 gpm for 4 hours.
Commercial high rise/multi-story – 5,000 gpm for 4 hours.
The maximum velocity in distribution mains is 10 fps for the maximum day plus fire flow scenarios.
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4-10
4.3.8
Performance Criteria Summary
Table 4.2 summarizes the performance criteria used to evaluate the delivery system.
Table 4.2
Performance Criteria Summary
Description
Criteria
Demand and Production Criteria
Peaking Factors
MDD/ADD
1.8
PHD/ADD
3.0
Water Production
Supply MDD while wells operate a maximum of 18 hours per
day and with 15% redundancy
Storage Criteria
Emergency Storage – ADD without using more than 80% of
the total storage capacity without wells
Transmission/Distribution
Velocity Criteria
ADD, MDD, and PHD
≤ 5 fps
MDD plus Fire Flow
≤ 10 fps
Pressure Criteria (ADD, MDD, PHD)
50 psi ≤ Pressure ≤ 110 psi
Pressure Criteria (Fire Flow)
20 psi ≤ Pressure ≤ 110 psi
Pipe Diameter Criteria (inches)
Section Lines/Arterial
16
Half-Mile/Collector Pipelines
12
All Other Pipelines
8
Booster Pump Station (BPS) Criteria
Capacity Requirement
The larger of PHD or MDD plus Fire Flow
Firm Capacity
Capacity with the largest pump out of service
Fire Flow Criteria
Fire Flow Requirements(1)
Low-Density Residential = 1,500 gpm for 2 hours
High-Density Residential = 2,000 gpm for 4 hours
Commercial/Mixed Use/ Schools = 3,000 gpm for 4 hours
Industrial/Warehouse = 5,000 gpm for 4 hours
Notes:
(1) Fire flow requirements are general and applied for planning purposes. The 2018 edition of the International Fire Code allows
reductions in fire flow requirements for structures with approved automatic sprinkler systems and installation practices,
which can be granted at the discretion of the City Fire Marshall.
4.4
Hydraulic Model
The City previously had a water distribution system model of the Central Buckeye area developed in the
InfoWater Pro modeling software by Innovyze. This model was expanded to include the Tartesso and Sun
City Festival area by taking the City's GIS data, facilities information, and customer billing data to create
the ability to model those areas. The City prefers the WaterCAD modeling software by Bentley so the
models were converted to WaterCAD for use in the IWMP. The models were used to size future water
mains and evaluate pipe capacity under PHDs and fire flow conditions.
2025 INTEGRATED WATER MASTER PLAN
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CITY OF BUCKEYE
4-11
4.5
Master Plan by Water Service Area
The Buckeye water distribution system has four hydraulically separate water service areas located within
one or more pressure zones. In this section, a separate plan is provided for each service area.
4.5.1
Sun City Festival
The Sun City Festival development in WPA 1 is located just south of the CAP canal and straddles Zone 6
and 7. This water system was constructed to serve the Sun City Festival development and is not intended
to serve adjacent developments. The Sun City Festival development is approximately half developed. Sun
City Festival does have land north of the CAP canal, but currently, there is not a water resource allocation
or defined plan to develop north of the canal.
The Sun City Festival service area, water distribution system, water production facilities, and water storage
tanks are shown in Figure 4.2.
4.5.1.1
2024 Water Infrastructure Description
Wells and Water Treatment
Sun City Festival has three active wells; a fourth well location has been drilled but is not equipped. The
Sun City Festival wells are summarized in Table 4.3. These wells give Sun City Festival a total water supply
capacity of 5,360 gpm, with a firm capacity of 3,310 gpm when the largest well, Festival Number No. 1, is
offline.
Table 4.3
Sun City Festival Wells
Well
Permitted Volume (AFY)
Pumping Flow Rate (gpm)
Festival No. 1
2,581
2,050
Festival No. 2
1,665
1,990
Festival No. 3
1,665
1,320
Festival No. 4
TBD
Drilled but not constructed.
TBD - to be determined
Pump Stations
The Sun City Festival water distribution system has one BPS that serves two pressure zones (Pressure
Zones 6 and 7). The pump station has three pumps and a firm pumping capacity of 3,600 gpm. A fourth
pump will be installed in 2025 and will add an additional 1,900 gpm of capacity. The pump station is
located at the southeast corner of the Beardsley Parkway and Desert Vista Boulevard intersection.
N 291st Ave
A
v
e
Sun Valley Pkw
y
W
Yukon D
r
N
27
3rd Ave
N De
se
rt Oa
sis Blvd
W Beardsley Pkwy
W Covey Ln
N 291st Ave
S
un Valley Pkwy
Sun Valley Pkwy
N 251st Ave
W Rose Garden Ln
N De
s
ert Vista Blvd
N Desert Vista Blvd
W
Morro
w D
r
W Vis
ta North
Dr
W M
cRae D
r
N 2
6
0
th
Ln
W Beardsley Pkwy
W
C
ovey L
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Sun Valley
Sun Valley Pkwy
Copper Canyon
Golf Course
!ã
!ã
!ã
U
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=)
Zone 7
Zone 6
Sun City
Festival
Well #2
Sun City
Festival
Well #1
Sun City
Festival
Well #3
Last Revised: October 30, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch02\
O
0
0.35
0.17
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: City of Buckeye.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 4.2 Sun City Festival 2024 Water Distribution System
CITY OF BUCKEYE
Legend
!ã
Well
U
T"
=)
Storage & Booster
Pump
Water Main (inches)
6 and Smaller
8
12
16
20
24
Pressure Zones
6
7
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-13
Water Storage
Sun City Festival has 2 groundwater storage tanks (GSTs) located at the Sun City Festival pump station
site. Each storage tank has a rated capacity of 1.0 MG, for a total capacity of 2.0 MG.
Water Distribution Mains
The Sun City Festival distribution system consists of 70.7 miles of water mains. Table 4.4 summarizes the
length of water mains by diameter.
Table 4.4
Sun City Festival Water Mains
Main Diameter (inches)
Total Length (miles)
6 and Smaller
0.3
8
49.9
12
14.3
16
5.2
20
0.9
24
0.1
Total
70.7
4.5.1.2
Planned Development Areas
Figure 4.3 shows the planned development areas in Sun City Festival. In Figure 4.3, lands to be developed
are colored based on the development planning period. The development planning period is dictated by
the first phase in which an area will have in-service developments and does not mean that area will be
completely developed by that year.
4.5.1.3
Demand Projections
The Sun City Festival water distribution system was evaluated using the ADD, MDD, and PHD conditions in
each planning period. The demands for each planning period are summarized in Table 4.5. These demand
projections include areas that can be developed by 2040 and have a CAWS or land use type that does not
require a CAWS (commercial and industrial).
Table 4.5
Sun City Festival Demand Projections
Planning Year
Average Daily Water Demand (gpm) MDD (gpm)
PHD (gpm)
2024
820
1,476
2,460
2030
999
1,798
2,997
2035
1,084
1,951
3,252
2040
1,221
2,198
3,663
N 291st Ave
A
v
e
Sun Valley Pkw
y
W
Yukon D
r
Deser
t O
as
is B
lvd
W Covey Ln
N 291st Ave
Sun Valley Pkwy
N 251st Ave
N De
s
ert Vista Blvd
N Desert Vista Blvd
W
Morro
w D
r
W Vis
ta North
Dr
W M
cRae D
r
N 2
6
0
th
Ln
W
C
ovey L
n
Sun Valley
Sun Valley Pkwy
Copper Canyon
Golf Course
!ã
!ã
!ã
U
T"
=)
Festival
Ranch
Festival
Ranch
Sun Valley
Villages
I and II
North Star
Ranch
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O
0
0.3
0.15
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: City of Buckeye.
Figure 4.3 Sun City Festival Development Areas
CITY OF BUCKEYE
Legend
3
Q
Water Campus or WTP
U
T"
=)
Storage & Booster
Pump
!ã
Well
Water Main (inches)
6 and Smaller
8
12
16
20
24
Projected Development Phase
Existing
2030
2035
2040
Master Planned
Community
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CITY OF BUCKEYE
4-15
4.5.1.4
Sun City Festival Capacity Evaluation
Water Supply Evaluation
Table 4.6 presents the results of a water supply capacity evaluation for each planning period based on the
City's performance criteria for MDD conditions.
Table 4.6
Sun City Festival Water Supply Evaluation
Well/Plant
Flow Rate
(gpm)
Planning Year Maximum Day Supply/Demand (gpm)
2024
2030
2035
2040
Festival No. 1(1)
2,050
0
0
0
0
Festival No. 2
1,990
1,990
1,990
1,990
1,990
Festival No. 3
1,320
1,320
1,320
1,320
1,320
Festival No. 4(2)
1,000
0
1,000
1,000
1,000
Firm Supply(3)
6,360
2,110
2,748
2,748
2,748
MDD
–
1,476
1,798
1,951
2,198
Surplus/(Deficit)
–
634
949
796
550
Notes:
(1) Festival No. 1 is assumed to be offline for redundancy.
(2) Festival No. 4 has been drilled and equipping is budgeted for 2025.
(3) Firm supply assumes wells operate 75% of the time with 15% redundancy, per COB EDS 3-5.301.
Table 4.6 shows that the existing Sun City Festival wells are projected to meet requirements for MDD
through 2040. Festival Well No. 4 helps to improve supply resiliency, offset future reduced flows from the
other wells, and supply demands that are higher than anticipated.
The City has a CAP allocation, an NIA allocation, and is pursuing water supplies that could be delivered via
the CAP canal, including Harquahala water and a water right from raising the Bartlett Dam. By 2040, an
SWTP could be constructed near the CAP canal. Water delivered by this SWTP could provide additional
reliability to the Sun City Festival water system and reduce the reliance on groundwater, as well as provide
water supplies to developments located farther south along Sun Valley Parkway. The City should make
arrangements for land where this SWTP could be located, possibly creating a water campus near the
WWTP. Land to be acquired depends on the ultimate size of the WTP. Most treatment plants in Maricopa
County in the small to midsize range are on parcels between 15 and 40 acres.
Pumping Capacity Evaluation
Table 4.7 presents an evaluation of the required pump station infrastructure for each planning period
using the City's performance criteria listed in Table 4.2. With a school and several community centers, a
fire flow requirement of 3,000 gpm in addition to MDD was used in the evaluation. The evaluation shows
that pumps would operate beyond the firm capacity in the event of a fire flow. A fourth pump, providing
an additional 1,900 gpm of capacity, is planned to be installed by the end of 2025. With the new pump,
the pump station will have enough capacity to meet the pumping requirements for the projected 2040
Sun City Festival demands.
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Table 4.7
Sun City Festival Pumping Capacity Evaluation
Booster Pump Station
Number of
Pumps
Capacity (gpm) or Demand (gpm)
Firm
2024
2030
2035
2040
Sun City Festival
3
3,600
3,600
3,600
3,600
3,600
Sun City Festival Pump Expansion
1
1,900
0
1,900
1,900
1,900
Firm Pump Station Capacity
5,500
3,600
5,500
5,500
5,500
Required Pump Flow Rate(1)(2)
4,476
4,798
4,951
5,198
Surplus/(Deficit)
-876
702
549
302
Notes:
(1) School fire flow requirement (3,000 gpm) is used for evaluation.
(2) Required capacity calculated as the larger of (a) PHD or (b) MDD plus fire flow requirement.
Storage Capacity Evaluation
Table 4.8 presents an evaluation of the required water storage infrastructure in Sun City Festival for each
planning period. The required storage is dictated by the City's performance criteria, summarized in
Table 4.2.
Table 4.8
Sun City Festival Storage Capacity Evaluation
Tank
Rated Capacity
(MG)
Available Capacity (MG)
2024
2030
2035
2040
Festival Tank 1
1.25
1.25
1.25
1.25
1.25
Festival Tank 2
1.1
1.1
1.1
1.1
1.1
Total Volume
2.35
2.35
2.35
2.35
2.35
Required Volume(1)
1.48
1.80
1.95
2.20
Surplus/(Deficit)
0.87
0.55
0.40
0.15
Notes:
(1) Required capacity is calculated to be one day of ADD without using more than 80% of the total storage capacity without
using wells.
A second Festival storage tank was recently constructed, giving a total storage capacity of 2.35 MG.
Table 4.8 shows that 2.35 MG of storage will be sufficient to meet storage requirements for the projected
2040 Sun City Festival demands. Beyond 2040, the City should plan to expand storage further to meet
buildout storage requirements.
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Water Distribution System Evaluation
The City's WaterCAD model was used to evaluate the capacity of the water distribution system. The PHD
scenario was used to evaluate the Sun City Festival water distribution system against the City's
performance criteria stated in Table 4.2. The model predicted that water system pressures were between
50 and 110 psi, and water velocities were below 5 fps, so the performance criteria is satisfied.
Appendix 2A, Figure 4A.1, presents a map documenting the predicted model pressures. A fire flow model
simulation was also completed under MDD plus fire flow conditions, and the residual pressure is above
20 psi throughout the distribution system. However, the pumping capacity in Sun City Festival is not
sufficient to meet the MDD plus 3,000 gpm fire flow required at commercial and school developments.
Therefore, it is recommended that the City expand the existing pump station to meet fire flow
requirements.
4.5.1.5
Infrastructure Projects
The recommended infrastructure projects for Sun City Festival include the new well, storage tank, and
pump station expansion to address projected capacity limitations. Additionally, transmission mains to
serve future development within Sun City Festival and groundwater treatment for the future well are
included. The recommended infrastructure projects are shown in Figure 4.4 and summarized in Table 4.9.
The Trigger column in Table 4.9 identifies when a project needs to be in service. Projects to address
known deficiencies are assigned the 2030 planning year so that the projects are completed in the next
5 years. Other projects need to be constructed in time to make sure that the performance criteria can be
met. For example, the MDD will increase with new growth, so the timing of new wells needs to align with
the requirement to supply MDDs. Some projects will be constructed when growth occurs in a
geographical area. For example, a transmission main project serving a completely new development will
need to be in place when that development is being constructed. For these projects, the trigger is the
timing of a development, and the planning year of anticipated development is also provided to give the
approximate time period. As conditions change, the City will be able to make near-term adjustments to
the time a project should start so that the project can be completed on time.
N 291st Ave
A
v
e
Sun Valley Pkw
y
W
Yukon D
r
Deser
t O
as
is B
lvd
W Covey Ln
N 291st Ave
Sun Valley Pkwy
N 251st Ave
N De
s
ert Vista Blvd
N Desert Vista Blvd
W
Morro
w D
r
W Vis
ta North
Dr
W M
cRae D
r
N 2
6
0
th
Ln
W
C
ovey L
n
Sun Valley
Sun Valley Pkwy
Copper Canyon
Golf Course
!ã
!ã
!ã
!ã
U
T"
=)
3
Q
3
Q
W6
W8
W8
W8
W8
W8
W5
W8
W6
W63
W7
W7
W3.2
Sun City
Festival
Well #2
Sun City
Festival
Well #1
Sun City
Festival
Well #3
W1
W3
W2
Last Revised: October 30, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch02\
O
0
0.3
0.15
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: City of Buckeye.
Figure 4.4 Sun City Festival Recommended Water Distribution Infrastructure
CITY OF BUCKEYE
Legend
3
Q
Proposed WTP
U
T"
=)
Storage & Booster
Pump
U
T"
=)
Proposed Booster Pump
Station
!ã
Well
!ã
Proposed Well
Water Main (inches)
6 and Smaller
8
12
16
20
24
Proposed Water Main (inches)
12
16
24
Proposed Raw Water
Main
Projected Development Phase
Existing
2030
2035
2040
Master Planned
Community
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-19
Table 4.9
Sun City Festival Planned Infrastructure Projects
Project ID
Facility Type
Description
Justification
Capacity/Size
Length/Qty
(feet or no.)
Project Trigger
(Year)
W3.1
SWTP
SWTP including storage
and pumping onsite
Treat surface water allocation for
potable use for developments along
Sun Valley Parkway.
TBD depending
on acquired
surface water
1
After water resource and supply
established, expected near
2040.
W3.2
Raw Water Pipeline
Pipeline from CAP Canal
to treatment plant
Treat surface water allocation for
potable use for developments along
Sun Valley Parkway.
24 inches, may be
larger depending
on acquired
surface water
3,200
After water resource and supply
established.
W3.3
Land Acquisition for
SWTP
Land for a SWTP
Treat surface water allocation for
potable use for developments along
Sun Valley Parkway.
15 to 40 acres
1
By 2030, before land is
committed to other purposes.
W5
Potable Water Mains Transmission mains
within Sun City Festival
Convey water to projected future
development.
12 inches
2,900
Development in the Area
(2030).
W6
Potable Water Mains Transmission mains
within Sun City Festival
Convey water to projected future
development.
16 inches
4,400
Development in the Area
(2030).
W7
Potable Water Mains Transmission mains
within Sun City Festival
Convey water to projected future
development.
12 inches
6,700
Development in the Area
(2035).
W8
Potable Water Mains Transmission mains
within Sun City Festival
Convey water to projected future
development.
24 inches
24,700
Development in the Area
(2035).
ID - identification; Qty - quantity
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-20
4.5.2
Floreo at Teravalis
Floreo at Teravalis (referred to in this report as Floreo) is a Master Planned community designed by a
developer. The water system has been constructed and currently serves model homes. The portion of
Floreo located east of Wagner Wash is the portion that is being considered in the IWMP. Floreo will be
supplied by wells, and in the future, the water supply could come through a transmission main supplied
by a future WTF that takes water from the CAP canal to the north. A much larger Teravalis development
will be located west of the Hassayampa River channel, but this portion of the development does not yet
have a water resource allocation and is not included in this IWMP.
4.5.2.1
Planned Development Areas
Figure 4.5 shows the planned development areas in Floreo. In Figure 4.5, lands to be developed are
colored based on the development planning period. The actual development timing and location may
vary.
4.5.2.2
Demand Projections
The Floreo water distribution system was planned and analyzed based on the projected future ADD, MDD,
and PHD conditions for each planning period. The demands for each planning period are summarized in
Table 4.10. These demand projections include areas that can be developed by 2040 with a CAWS or areas
with a land use type that does not require a CAWS (commercial and industrial).
Table 4.10
Floreo Demand Projections
Planning Year
Average Daily Water Demand
(gpm)
MDD
(gpm)
PHD
(gpm)
2024
-
-
-
2030
772
1,390
2,317
2035
888
1,598
2,663
2040
1,252
2,254
3,757
W
C
act
u
s
Rd
W
C
a
c
t
u
s
Rd
N
3
0
4
t
h
L
n
W
Indig
o
Way
S
W Teravalis Pkwy
Sun Valley Pkwy
Sun Valley Pkwy
Floreo
Teravalis
Sun Valley
Villages
I and II
Sun Valley
Villages
I and II
Last Revised: October 30, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch02\
O
0
0.3
0.15
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: City of Buckeye.
Figure 4.5 Floreo Development Areas
CITY OF BUCKEYE
Legend
Projected Development Phase
2030
2040
Post 2040
Master Planned
Community
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-22
4.5.2.3
Water System Capacity Evaluation
Water Supply Evaluation
Table 4.11 presents an evaluation of the required well production in Floreo for each planning period. The
required water supply is dictated by the City's performance criteria.
Table 4.11
Floreo Water Supply Evaluation
Well/Plant
Estimated Well Production
(gpm)
Planning Period MDD (gpm)
2024
2030
2035
2040
Floreo Well No. 1
1,400
0
1400
1400
1400
Floreo Well No. 2
905
0
905
905
905
Floreo Well No. 3
490
0
490
490
490
Floreo Well No. 4
1,800
0
0
1800
1800
Floreo Well No. 5
800
0
0
0
800
Floreo Well No. 6
800
0
0
0
0
Floreo Well No. 7
800
0
0
0
0
Firm Supply(1)
4,040
-
2,096
3,446
4,046
MDD
–
-
1,390
1,598
2,254
Surplus/(Deficit)
–
0
706
1,848
1,792
Notes:
(1) Firm supply assumes wells operate 75% of the time with 15% redundancy, per COB EDS 3-5.301.
Table 4.11 shows that three wells will be required by 2030 to meet demands with a fourth well required
for redundancy. Two additional wells are required by 2040. Well production in Floreo is unknown, so
800 gpm per well is assumed. The number of wells needed to serve Floreo will depend on the actual
production of each well.
Pumping Capacity Evaluation
Table 4.12 presents an evaluation of the required pump station infrastructure in Floreo for each planning
period. The required pumping capacity is dictated by the performance criteria summarized in Table 4.2.
Commercial or institutional development is estimated to be constructed by 2035, increasing the fire flow
pumping requirements in 2035 and beyond. Actual pumping requirements will be refined as each phase
of the project develops.
Table 4.12
Floreo Water Pumping Capacity Evaluation
Booster Pump Station
Number of
Pumps
Capacity (gpm) or Demand (gpm)
Firm
2024
2030
2035
2040
Floreo BPS (Zone 5)
6
5,750
0
5,750
5,750
5,750
Floreo BPS (Zone 4)
6
5,000
0
0
5,000
5,000
Total Capacity
10,750
-
5,750
10,750
10,750
Required Pump Flow Rate(1)(2)
-
2,890
4,598
5,254
Surplus/(Deficit)
0
2,860
6,152
5,496
Notes:
(1) Low-density residential fire flow requirement (1,500 gpm) is used for 2030. Commercial fire flow requirement (3,000 gpm) is
used for 2035 and 2040.
(2) Required flow rate is calculated as the larger of (a) PHD or (b) MDD plus fire flow requirement.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-23
The City has design plans for the Floreo Water Campus that include sets of pumps for serving Pressure
Zones 5 and 4. Phase 1 of the water campus will include the Zone 5 pumps (six pumps with a firm capacity
of 5,750 gpm). Phase 2 of the water campus will include the Zone 4 pumps (six pumps with a firm capacity
of 5,000 gpm). The design plans show that both pump sets have room for additional pumps to be added
in the future, if necessary.
Storage Capacity Evaluation
Table 4.13 presents an evaluation of the required water storage volume for each planning period. The
required storage is defined by the City's performance criteria in Table 4.2.
Table 4.13
Floreo Water Storage Evaluation
Tank
Rated Capacity
(MG)
Available Capacity (MG)
2024
2030
2035
2040
Floreo Tank 1
3.2
0.0
3.2
3.2
3.2
Total Volume
3.2
-
3.2
3.2
3.2
Required Volume(1)
-
1.4
1.6
2.3
Surplus/(Deficit)
0.0
1.8
1.6
0.9
Notes:
(1) Required capacity is one day of ADD without using more than 80% of the total storage capacity without using wells.
A 3.2-MG GST has already been constructed for Floreo. Table 4.13 shows that this tank will be sufficient to
meet storage requirements through 2040. This tank is planned to be located at the storage and booster
station on the west side of the initial Floreo development, near what will become Teravalis Parkway and
Johnson Road. A second finished water storage tank is planned for the site.
4.5.2.4
Infrastructure Projects
The planned infrastructure projects for Floreo include new wells, water treatment, storage tank, and pump
station. Infrastructure projects include transmission mains to serve future subdivisions within Floreo. The
recommended infrastructure projects are summarized in Figure 4.6 and Table 4.14.
The Trigger column in Table 4.14 identifies when a project needs to be in service. Some projects need to
be constructed in time to make sure that the performance criteria can be met. For example, the MDD will
increase with new growth, so the timing of new wells needs to align with the requirement to supply
MDDs. Other projects will be constructed when growth occurs in a geographical area. For example, a
transmission main project serving a completely new development will need to be in place when that
development is being constructed. For these projects, the trigger is the timing of a development, and the
planning year of anticipated development is also provided to give the approximate time. As conditions
change, the City will be able to make near-term adjustments to the time a project should start so that the
project can be completed on time.
W
C
act
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Rd
W
C
a
c
t
u
s
Rd
N
3
0
4
t
h
L
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W
Indig
o
Way
S
W Teravalis Pkwy
Sun Valley Pkwy
Sun Valley Pkwy
!ã
!ã
!ã
!ã
!ã
!ã
!ã
U
T"
=)3
Q
W17
W64
W64
W17
W63
W16
W16
W16
W17
W58
W58
W58
W17
W17
W59
W59
W63
W63
W59
W59
W59
W14.2
W11.2
W10.2
W21.2
W13.2
W9.2
W9.1
W10.1
W11.1
W12.1
W13.1
W14.1
W21.1
W15
W14
Last Revised: October 30, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch02\
O
0
0.3
0.15
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: City of Buckeye.
Figure 4.6 Floreo Recommended Water Distribution Infrastructure
CITY OF BUCKEYE
Legend
3
Q
Proposed WTP
U
T"
=)
Proposed Booster Pump
Station
!ã
Proposed Well
Proposed Water Main (inches)
12
16
24
Proposed Raw Water
Main
Projected Development Phase
2030
2040
Post 2040
Master Planned
Community
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-25
Table 4.14
Floreo Recommended Infrastructure Projects
Project ID
Facility Type
Description
Justification
Capacity/Size
Length/Qty
(feet or no.)
Project Trigger
(Year)
W9.1
Well
Floreo Well No. 1
Supply water demands for projected future customers.
800 gpm
1
Before first home is constructed.
W10.1
Well
Floreo Well No. 2
Supply water demands for projected future customers.
800 gpm
1
Before first home is constructed.
W11.1
Well
Floreo Well No. 3
Supply water demands for projected future customers.
800 gpm
1
2030
W12.1
Well
Floreo Well No. 4
Supply water demands for projected future customers.
800 gpm
1
2030
W13.1
Well
Floreo Well No. 5
Supply water demands for projected future customers.
800 gpm
1
MDD approaches capacity of 4 wells.(1)
W14.1
Well
Floreo Well No. 6
Supply water demands for projected future customers.
800 gpm
1
MDD approaches capacity of 5 wells.(1)
W21.1
Well
Floreo Well No. 7
Supply water demands for projected future customers.
800 gpm
1
MDD approaches capacity of 6 wells.(1)
W9.2
Pipeline
Raw Water Pipeline
Convey water from Floreo Well No. 1 to treatment facility.
8 inches
6,200
Concurrent with Well No. 1.
W10.2
Pipeline
Raw Water Pipeline
Convey water from Floreo Well No. 2 to treatment facility.
8 inches
2,400
Concurrent with Well No. 2.
W11.2
Pipeline
Raw Water Pipeline
Convey water from Floreo Well No. 3 to treatment facility.
8 inches
1,000
Concurrent with Well No. 3.
W12.2
Pipeline
Raw Water Pipeline
Convey water from Floreo Well No. 4 to treatment facility.
8 inches
250
Concurrent with Well No. 4.
W13.2
Pipeline
Raw Water Pipeline
Convey water from Floreo Well No. 5 to treatment facility.
8 inches
5,600
Concurrent with Well No. 5.
W14.2
Pipeline
Raw Water Pipeline
Convey water from Floreo Well No. 5 to treatment facility.
8 inches
500
Concurrent with Well No. 6.
W21.2
Pipeline
Raw Water Pipeline
Convey water from Floreo Well No. 5 to treatment facility.
8 inches
3,100
Concurrent with Well No. 7.
W14
Groundwater Treatment
Arsenic Treatment Facility
Treat groundwater from wells.
8.5 mgd
1
Concurrent with Well No. 1.
W15.1
Ground Storage
Storage Tank
Provide water storage.
3.2 MG
1
Concurrent with Well No. 1.
W15.2
Pump Station
Pump Station
Meet pumping capacity requirements for projected future developments.
8.5 mgd
1
Concurrent with Well No. 1.
W16
Potable Water Mains
Transmission Mains within Floreo
Convey water to projected future developments.
16 inches
12,250
Development in the Area (2030).
W17
Potable Water Mains
Transmission Mains within Floreo
Convey water to projected future developments.
12 inches
20,400
Development in the Area (2030).
W58
Potable Water Mains
Transmission Mains within Floreo
Convey water to projected future developments.
16 inches
13,400
Development in the Area (2040).
W59
Potable Water Mains
Transmission Mains within Floreo
Convey water to projected future developments.
12 inches
19,750
Development in the Area (2040).
W63
Water Transmission Main
Transmission Main from the CAP
SWTP to Floreo
Convey surface water to the Floreo development.
24 inches
21,700
Concurrent with the CAP SWTP.
Notes:
(1) The timing of well projects is dependent on the flow rate performance of any new constructed wells and assumes that all existing well flow rates remain constant.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-26
4.5.3
Tartesso
The Tartesso development is located on the west side of Buckeye, north of I-10. Tartesso is a stand-alone
development with multiple planned developments located to the north and west. Most of the existing
development in Tartesso area is in Pressure Zone 3. However, the northeastern part of Tartesso falls within
the elevation range of Pressure Zone 4. The area that falls within Pressure Zone 4 is relatively small, and
the system is not isolated along the pressure zone boundary.
South of Tartesso is a "horse property" type development named West Phoenix Estates. The Tartesso and
West Phoenix Estates distribution systems could be connected to improve system resiliency, however, the
City has indicated that this is unlikely to happen in the foreseeable future.
The Tartesso water distribution system, water production facilities, and water storage tanks are shown in
Figure 4.7.
4.5.3.1
2024 Water Infrastructure Description
Wells and Water Treatment
Tartesso has three active wells, listed in Table 4.15. Water from the wells is conveyed to the Tartesso water
campus where it is treated and then stored before being pumped into the water distribution system. Wells
Tartesso No. 1, 2, and 3 serve the Tartesso development area and Sun Valley No. 1 and 2 serve the West
Phoenix Estates development area. Since these developments are planned to be kept separate, the Sun
Valley wells are not included in the water supply capacity analysis later in this section.
Table 4.15
Tartesso Wells
Well
Permitted Capacity (AFY)
Pumping Flow Rate (gpm)
Tartesso No. 1
1,235
400
Tartesso No. 2
600
1,250
Tartesso No. 3
1,573
1,350
Sun Valley No. 1(1)
n/a
250
Sun Valley No. 2(1)
n/a
175
Notes:
(1) The Sun Valley Well is run by generator power.
choo
l
R
d
W Indian School Rd
W Tonopah Salome Hwy
Earll Dr
N 311th Ave
315th Ave
W Osborn Rd
Flower St
Catalina Dr
Thomas
Rd
N Johnson Rd
10
311t
h A
v
e
N 311th Ave
W T
a
rt
ess
o
Pk
wy
N
L
ainey L
n
N B
roo
kl
y
n D
r
N B
ro
oklyn
Dr
W Tonopah Salome Hwy
W Thomas Rd
W Thomas Rd
Bruner Rd
N
30
3rd
A
v
e
Ta
rt
e
ss
o
P
k
wy
Ta
rte
sso Pkwy
N Johnson Rd
Sun Valley Pkwy
Sun Valley Pkwy
W Van Buren St
W Tonopah Salome Hwy
N 293rd Ave
N 295th Ave
W Bellview St
W Pierce St
W Pierce St
W
McDowel
l
Rd
W McDowell Rd
Taylor St
W Roosevelt St
W Roosevelt St
308th Ave
W Latham St
N 29
9th Ave
N 299th Ave
McKinley St
W
Melvin St
W Taylor St
303rd Ave
Sun Valley Pkwy
W Indian School Rd
ne Rd
W Tonopah Salome Hwy
W McDowell Rd
Wilson Ave
W Van
Bur
en St
!ã
!ã
!ã
!ã
!ã
U
T"
=)
Zone 2
Zone 3
Zone 4
Sun Valley
Well #2
Sun Valley
Well #1
Tartesso
Well #1
Tartesso
Well #2
Tartesso
Well #3
Last Revised: October 30, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch02\
O
0
0.5
0.25
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: City of Buckeye.
Figure 4.7 Tartesso 2024 Water Distribution System
CITY OF BUCKEYE
Legend
U
T"
=)
Storage & Booster
Pump
!ã
Well
Water Main (inches)
6 and Smaller
8
12
16
20
24
Pressure Zones
2
3
4
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / F
L
I
i
NAL / CAROLLO
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-28
Pump Stations
The Tartesso water distribution system has one BPS. The pump station is located at the corner of Amelia
Avenue and 296th Avenue, along with the Tartesso storage tank. The pump station has five pumps and a
firm pumping capacity of 6,000 gpm.
Water Storage
Tartesso has 1 GST. The tank is located at the Tartesso water campus (Amelia Avenue and 296th Avenue),
with a rated storage capacity of 2.0 MG. There is not enough space at the site for additional storage,
although the site might be expanded to the north.
Water Distribution Mains
The Tartesso distribution system has 44.9 miles of water mains. Table 4.16 summarizes the length of water
mains by diameter.
Table 4.16
Tartesso Water Mains
Diameter (inches)
Total Length (miles)
6
0.3
8
30.0
12
2.9
16
5.3
20
1.9
24
1.0
36
3.7
Total
45.1
4.5.3.2
Planned Development Areas
Figure 4.8 shows the planned development areas in Tartesso. In Figure 4.8, lands to be developed are
colored based on the development planning period. The development planning period is dictated by the
first phase in which an area will have in-service developments and does not mean that area will be
completely developed by that year. There have been discussions on the possibility of connecting the West
Phoenix Estates distribution system to the Tartesso system, however, the City indicated that several
challenges need to be overcome to do so. For this report, it is assumed that the Tartesso and West
Phoenix Estates distribution systems will remain separate.
Sun
10
10
Sun Valley Pkwy
Sky
Region
!ã
!ã
!ã
!ã
!ã
U
T"
=)
Tartesso
Tartesso
Tartesso
Tartesso
Tartesso West
Tartesso West
Tartesso West
Elianto
Elianto
Montiere
Sun Valley
South
Desert Creek
Desert Creek
Valle Del Sol
Valle Del Rio
Cipriani
Last Revised: October 30, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch02\
O
0
0.5
0.25
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: City of Buckeye.
Figure 4.8 Tartesso Development Areas
CITY OF BUCKEYE
Legend
U
T"
=)
Storage & Booster
Pump
!ã
Well
Water Main (inches)
6 and Smaller
8
12
16
20
24
Projected Development Phase
Existing
2030
2035
2040
Post 2040
Master Planned
Community
111th Ave
Thomas Rd
Indian School Rd
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-30
4.5.3.3
Demand Projections
The Tartesso water distribution system was analyzed under ADD, MDD, and PHD conditions. The demands
for each planning period are summarized in Table 4.17. These demand projections include areas that can
be developed by 2040 based on their CAWS status or areas with a land use type that does not require a
CAWS (commercial and industrial).
Table 4.17
Tartesso Demand Projections
Planning Year
Average Daily Water Demand
(gpm)
MDD
(gpm)
PHD
(gpm)
2024
995
1,791
2,985
2030
1,197
2,155
3,592
2035
1,542
2,775
4,625
2040
1,886
3,395
5,658
4.5.3.4
Water System Capacity Evaluation
Water Supply Evaluation
Table 4.18 contains an evaluation of the required water supply infrastructure in Tartesso for each planning
period. The required supply is defined by the City's performance criteria in Table 4.2.
Table 4.18
Tartesso Water Supply Evaluation
Well
Total Capacity
(gpm)
Planning Year MDD (gpm)
2024
2030
2035
2040
Tartesso No. 1
400
400
400
400
400
Tartesso No. 2
1,250
1,250
1,250
1,250
1,250
Tartesso No. 3(1)
1,350
0
0
0
0
Tartesso No. 4
1,200
0
1,200
1,200
1,200
Tartesso No. 5
1,200
0
1,200
1,200
1,200
Tartesso No. 6
1,200
0
0
0
1,200
Firm Supply(3)
6,600
1,238
3,038
3,038
3,938
MDD(2)
–
1,791
2,155
2,775
3,395
Surplus/(Deficit)
–
-554
882
263
543
Notes:
(1) Tartesso No. 3 assumed to be off for redundancy.
(2) Developments included in the demand projection are: Tartesso, Elianto Village 1, Elianto Village 4, and Mirielle Phase 1A.
(3) Firm supply assumes wells operate 75% of the time with 15% redundancy, per COB EDS 3-5.301.
Table 4.18 shows that the three existing wells in Tartesso are not sufficient to meet the current 2024
supply requirements when Tartesso Well No. 3 is offline for redundancy. Therefore, a new well Tartesso
No. 4 is recommended for immediate construction to provide adequate capacity. Two additional wells,
Tartesso No. 5 and No. 6, are recommended to provide sufficient capacity by 2035 and 2040.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-31
Pumping Capacity Evaluation
Table 4.19 presents an evaluation of the pump station infrastructure in Tartesso for each planning phase.
The required pumping capacity in each phase is dictated by the City's performance criteria. Commercial
areas are expected to develop in future phases along Sun Valley Parkway. In 2024, a low-density
residential fire flow requirement (1,500 gpm) was used; however, a commercial fire flow requirement
(3,000 gpm) was used for all future planning periods.
Table 4.19
Tartesso Water Pumping Capacity Evaluation
Booster Pump Station
Number of
Pumps
Capacity (gpm) or Demand (gpm)
Firm
2024
2030
2035
2040
Tartesso BPS
5
6,000
6,000
6,000
6,000
6,000
Bruner and Camelback BPS
5
3,000
0
3,000
3,000
3,000
Total Capacity
9,000
6,000
8,750
10,750
10,750
Required Capacity(1)(2)
3,291
2,890
4,598
5,254
Surplus/(Deficit)
2,709
5,860
6,152
5,496
Notes:
(1) Low-density residential fire flow requirement (1,500 gpm) used for evaluation in 2024. Commercial fire flow requirement
(3,000 gpm) used for future phases.
(2) Required capacity calculated as the larger of (a) PHD or (b) MDD plus fire flow requirement.
Table 4.19 shows that the existing Tartesso BPS does not have sufficient capacity to meet pumping
capacity requirements through 2040 on its own. If the City can acquire additional land adjacent to the
Tartesso site to expand this facility then flow from additional wells could be delivered to this site and
make a larger, regional facility. If not, then the City could construct a storage and pumping site at Bruner
Road and Camelback Road that could be used for a second Tartesso BPS. If the Bruner Road facility is not
constructed, then that capacity shown in Table 4.19 for the Bruner and Camelback site will need to go to
the Tartesso BPS.
Storage Capacity Evaluation
Table 4.20 evaluates the required water storage infrastructure in Tartesso for each planning phase. The
required storage in each phase is dictated by the City's performance criteria.
Table 4.20
Tartesso Water Storage Evaluation
Tank
Rated Capacity
(MG)
Available Capacity (MG)
2024
2030
2035
2040
Tartesso Tank 1
2.0
2.0
2.0
2.0
2.0
Bruner and Camelback Tank 2
4.0
0.0
4.0
4.0
4.0
Total Capacity
6.0
2.0
6.0
6.0
6.0
Required Capacity(1)
1.8
2.2
2.8
3.4
Surplus/(Deficit)
0.2
3.8
3.2
2.6
Notes:
(1) Required capacity is calculated as one day of ADD without using more than 80% of the total storage capacity without wells.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-32
Table 4.20 shows that an additional 4.0 MG storage tank will be required by 2030 to meet storage
requirements for Tartesso. The existing Tartesso water campus site may be able to expand to the north,
potentially providing enough space for an additional storage tank. If the potential site for a new storage
and booster station at Bruner Road and Camelback Road is not constructed, then the capacity shown in
Table 4.20 will need to be constructed at the Tartesso site.
Water Distribution System Evaluation
The PHD scenario was used for evaluating the Tartesso water distribution system to evaluate pressures.
The water system was evaluated against the City's performance criteria as stated in Table 4.2. The
modeled evaluation of the Tartesso distribution system showed that peak velocities were below 5 fps. The
distribution pressures and pipe velocities are shown in Appendix A, Figure 4A.2.
Pressures in the northeastern region of Tartesso did not meet the minimum pressure requirement of
50 psi. This area is located in Pressure Zone 4, whereas most of Tartesso is located in Pressure Zone 3. To
meet pressure requirements throughout Tartesso, two PRVs should be installed to create a pressure zone
boundary between Pressure Zones 3 and 4. The recommended locations for these PRVs are shown in
Figure 4.9 and summarized as follows:
1. Indianola Avenue, just east of 296th Drive.
2. Tartesso Parkway, east of 297th Avenue.
Figure 4A.3 in Appendix 2A shows the junction pressures during a PHD scenario with the proposed PRVs
in place. The proposed PRVs were given a setpoint to maintain a downstream hydraulic grade of 1,335 ft.
In this configuration, the Tartesso pump station delivers to Zone 4, and then water is conveyed to Zone 3.
An alternative solution would be to have dedicated pump stations for Zone 3 and Zone 4 which deliver
appropriate pressures for each zone. However, there is not currently enough development in Zone 4 for
efficient operation. In the future when Zone 4 is more developed, a Zone 4 pump station is preferred over
the two proposed PRV stations.
All Tartesso junctions maintained a residual pressure above 20 psi in a MDD plus fire flow scenario.
4.5.3.5
Infrastructure Projects
The recommended infrastructure projects for Tartesso include the new wells, PRVs, and storage tank
detailed in the previous sections. Additionally, transmission mains to serve future developments within
Tartesso and groundwater treatment for the wells are included. The recommended infrastructure projects
are shown in Figure 4.10 and summarized in Table 4.21.
The Trigger column in Table 4.21 identifies when a project needs to be in service. Projects to address
known deficiencies are assigned the 2030 planning year so that the projects are completed in the next
5 years. Other projects need to be constructed in time to make sure that the performance criteria can be
met. For example, the MDD will increase with new growth, so the timing of new wells needs to align with
the requirement to supply MDDs. Some projects will be constructed when growth occurs in a
geographical area. For example, a transmission main project serving a completely new development will
need to be in place when that development is being constructed. For these projects, the trigger is the
timing of a development, and the planning year of anticipated development is also provided to give the
approximate time. As conditions change, the City will be able to make near-term adjustments to the time
a project should start so that the project can be completed on time.
W Claren
d
o
n
Ave
N 29
8t
h
Ln
W
Columbus Ave
W Mitchell Ave
W Whitton Ave
Tartesso Pkwy
N 298th Dr
N 298th Ln
W Brindle
y
Ave
N 296th Dr
Ta
r
t
e
s
s
o
P
k
wy
N 298th Dr
W Indianola Ave
N 297th Dr
W
A
m
elia Ave
N 296th Ave
W Fair
m
ount Ave
W Pay
ne Av
e
W
Colu
mb
us A
ve
W Mitchell Ave
W Whitton Ave
N 295th Dr
N 296th Dr
N 296th Dr
N 297
th L
n
N 297th Ln
Tartesso Pkwy
Tarte
ss
o Pk
wy
N 298th Ave
N 297th Ave
Tartesso
Elementary
School
N 293rd Dr
N 293rd Ave
T
ar
te
sso
Pk
w
y
T
arte
sso
Pkwy
Ta
rtes
so
Pkwy
N 294th Ln
N
2
94th Dr
Tartesso
Community Park
N 293rd Dr
N 29
3rd
Dr
N 295th
Av
e
W Wel
do
n A
ve
W Payne Ave
W
Payne Ave
W Columbus
Ave
W M
itc
hell
Ave
W Whitto
n
Ave
W Clarendon
Av
e
W Clarendon Ave
N 29
3r
d Ave
N 292nd Dr
N 292n
d Ln
Tartesso P
W Clarendon A
ve
N 292nd Dr
"b)
"b)
!ã
U
T"
=)
Zone 3
Zone 4
W20.1
W20.2
Tartesso
Well #1
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O
0
300
150
Feet
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: City of Buckeye.
Figure 4.9 Tartesso Recommended Pressure Reducing Valve Locations
CITY OF BUCKEYE
Legend
U
T"
=)
Storage & Booster
Pump
!ã
Well
"b)
Proposed PRV
Water Main (inches)
6 and Smaller
8
12
24
Pressure Zones
3
4
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
N
N
3
1
5
t
h A
v
e
W
In
dia
n Scho
ol
Rd
W Indian School Rd
W Tonopah Salome Hwy
Earll Dr
315th Ave
W Osborn Rd
Thomas
Rd
th Ave
W Camelback Rd
Be
th
any Hom
e
R
d
Bethany Home Rd
Sun Valley Pkwy
W Tar
t
e
ss
o
P
kwy
N
Br
oo
kl
yn
D
r
N
Br
o
okly
n Dr
W Tonopah Salome Hwy
W Thomas Rd
W Thomas Rd
Bruner Rd
N
30
3rd
A
ve
Tart
e
s
s
o
P
kwy
T
a
rt
es
so Pkwy
N Bruner Rd
Sun Valle
y Pkwy
W Tonopah Salome Hw
y
Ave
Ave
W Bellview St
W M
cDowe
ll Rd
W McDowell Rd
308th Ave
W Latham St
W Portland St
T
u
rner R
d
W Indian School Rd
N 277th Ave
Power Line Rd
W McDowell Rd
W McDowell Rd
Turner Rd
N Parker
"b)
"b)
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
U
T"
=)
U
T"
=)
3
Q
W64
W55
W2
5
W56
W56
W56
W56
W24
W24
W25
W25
W25
W25
W25
W24
W24
W24
W57
W57
W57
W56
W56
W56
W18.2
W19.6
W19.2
W18.3
W20.1
W20.2
W18.1
W19.1
W19.5
W23
W22
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O
0
0.5
0.25
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: City of Buckeye.
Figure 4.10 Tartesso Water Recommended Distribution Infrastructure
CITY OF BUCKEYE
Legend
3
Q
Proposed WTP
U
T"
=)
Proposed Booster Pump
Station
U
T"
=)
Storage & Booster
Pump
!ã
Proposed Well
!ã
Well
"b)
Proposed PRV
Water Main (inches)
6 and Smaller
8
12
16
20
24
Proposed Water Main (inches)
12
16
24
Proposed Raw Water
Main
Projected Development Phase
Existing
2030
2035
2040
Post 2040
Master Planned
Community
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-35
Table 4.21
Tartesso Recommended Infrastructure Projects
Notes:
(1) The timing of well projects is dependent on the flow rate performance of any new constructed wells and assumes that all existing well flow rates remain constant.
(2) Dual PRV station, larger PRV size for fire flow is provided, smaller PRV to be sized in design.
Project ID
Facility Type
Description
Justification
Diameter/Size
Length/Qty
(feet or no.)
Project Trigger
(Year)
W18.1
Well
Tartesso Well No. 4
Meet water supply demands for projected future developments.
1,200 gpm
1
Development in the Area (2030).
W19.1
Well
Tartesso Well No. 5
Meet water supply demands for projected future developments.
1,200 gpm
1
MDD meets firm capacity of existing wells and W18.1(1)
W19.5
Well
Tartesso Well No. 6
Meet water supply demands for projected future developments.
1,200 gpm
1
MDD meets firm capacity of existing wells and W19.1.(1)
W18.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8
650
Concurrent with Well No. 4.
W18.3
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility. Only needed if
existing Tartesso BPS is expanded and Bruner and Camelback
BPS is not constructed.
8
7,300
Concurrent with Well No. 4.
W19.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8
2,400
Concurrent with Well No. 5.(1)
W19.6
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8
1,850
Concurrent with Well No. 6.(1)
W20.1
PRV
Boundary between Pressure Zones 3 and 4
Enable pressure requirements to be met throughout the
Tartesso service area.
6 inches(2)
1
Development in the Area (2030).
W20.2
PRV
Boundary between Pressure Zones 3 and 4
Enable pressure requirements to be met throughout the
Tartesso service area.
6 inches(2)
1
Development in the Area (2030).
W22
Groundwater Treatment
Additional Tartesso Groundwater Treatment
Treat groundwater from existing and future wells.
3 mgd
1
As needed to match well capacity.
W23.1
Storage
Bruner and Camelback Storage and Booster Station Meet storage requirements for projected future developments.
4 MG
1
125% of ADD volume equal to 2.0 MG.
W23.2
Pump Station
Bruner and Camelback Storage and Booster Station Meet pumping requirements for projected future developments.
3,000 gpm
1
MDD plus fire flow of equal to 6,000 gpm.
W24
Potable Water Mains
Additional Tartesso Transmission Mains
Convey water to projected future developments.
24 inches
18,450
Development in the Area (2030).
W25
Potable Water Mains
Additional Tartesso Transmission Mains
Convey water to projected future developments.
12 inches
76,600
Development in the Area (2030).
W55
Potable Water Mains
Additional Tartesso Transmission Mains
Convey water to projected future developments.
24 inches
2,550
Development in the Area (2035).
W56
Potable Water Mains
Additional Tartesso Transmission Mains
Convey water to projected future developments.
12 inches
38,800
Development in the Area (2035).
W57
Potable Water Mains
Additional Tartesso Transmission Mains
Convey water to projected future developments.
12 inches
12,350
Development in the Area (2040).
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-36
4.5.4
Central Buckeye
The Central Buckeye water system is located primarily between I-10 and the Gila River, with some
development immediately north of I-10. Central Buckeye includes pressure Zones 1, 2, and part of Zone 3.
Most of the water distribution systems are continuous except for the Buckeye Airport and Bulfer areas.
The water system is supplied by wells, and groundwater is more plentiful and of higher quality at the
northeast and northwest ends of Central Buckeye.
4.5.4.1
2024 Water Infrastructure Description
Wells
Central Buckeye sources its water entirely from 17 wells, summarized in Table 4.22, with a production flow
rate capacity of 15,454 gpm.
Table 4.22
Central Buckeye Wells
Well
Permitted Capacity (AFY)
Production Flow Rate (gpm)
Broadway No. 1
1,031
180
Broadway No. 2
750
509
Broadway No. 3
660
180
Riata No. 2
1,210
400
Sonoran Vista NE Well
1,209
500
Sonoran Vista SW Well
797
420
North Airport Road No. 1
2,115
2,400
North Airport Road No. 2
2,030
2,800
Farallon No. 1
494
500
Farallon No. 2
494
550
Sundance No. 1
1,274
700
Sundance No. 2
1,257
800
Sundance No. 3
822
700
Sundance No. 4
694
950
Sundance No. 7
1,100
500
Sundance No. 8
683
1,050
Sundance No. 9
683
500
Bulfer
56
45
Airport Well A
80
150
Airport Well B
1,450
500
Well No. 12
256
320
Well No. 14
473
300
Well No. 13
645
500
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-37
Wells No. 12, No. 13, and No. 14 currently deliver water to Central Buckeye, however, are committed to
serve developments on the Landowner's land in the future. The City is expected to lose access to these
wells by 2027.
Bulfer, Airport Well A, and Airport Well B are included in Table 4.22. However, these wells serve isolated
areas that are not connected to the main Central Buckeye water distribution system.
Pump Stations
The Central Buckeye pump stations serve areas within Pressure Zones 1, 2, and 3. The pump stations that
serve Central Buckeye are summarized in Table 4.23.
Table 4.23
Central Buckeye Pump Stations
Booster Pump Station
Number of Pumps
Firm Capacity (gpm)
Pressure Zone(s) Served
Bales(2)
3
1,000
1
Buckeye North
4
500
2
Jacke A. Meck (Zone 1)
4
5,205
1
Jackie A. Meck (Zone 2)
5
5,024
2
Lower Buckeye(1)
0
0
2
North Airport Road
6
6,500
3
Rancho Vista(2)
5
1,850
2
Sundance Zone 2
5
3,000
2
Sundance Zone 3
6
6.000
3
West Park(2)
5
4,000
2
Notes:
(1) Lower Buckeye pump station is offline and not expected to be brought back online.
(2) Bales, Rancho Vista, and West Park are planned to be bypassed by 2030.
The City plans to bypass the Bales, Rancho Vista, and West Park Phase 1 site once the Farallon Water
Campus is completed, before 2030. Farallon Phase 1 is currently under construction and has a pumping
capacity of 6,000 gpm.
Water Storage
Central Buckeye has 12 GSTs, summarized in Table 4.24, for a total of 13.0 MG of water storage. The
Farallon Water Campus is expected to be constructed by 2030 with an initial storage volume of 2.0 MG,
expandable to 4.0 MG in the future. A future Westpark treatment, storage, and booster station is planned
for the Westpark development area to provide water services as this development grows. A second
treatment, storage, and booster station named Grand View is planned near the Buckeye Canal and east of
dean Road to serve planned development in that area.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-38
Table 4.24
Central Buckeye Water Storage
Tank
Capacity (MG)
Bales 1
0.6
Bales 2
0.5
Farallon
2.0
West Park
0.5
West Park
0.2
Rancho Vista
0.8
Jackie A. Meck
4.0
Lower Buckeye
0.0
Buckeye North
0.2
Sundance 2
1.6
Sundance 1
2.6
North Airport Road 1
1.0
North Airport Road 2
1.0
Water Distribution Mains
The Central Buckeye distribution system contains 329.4 miles of water mains. Table 4.25 summarizes the
length of water mains by diameter.
Table 4.25 presents the Central Buckeye water distribution system, water production facilities, and water
storage tanks.
Table 4.25
Central Buckeye Water Mains
Diameter (inches)
Total Length (miles)
6 and Smaller
49.4
8
164.0
10
3.3
12
53.9
16
50.7
18
1.6
20
3.8
24
2.6
30
0.0
Total
329.4
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-39
4.5.4.2
Planned Development Areas
Figure 4.11 shows the planned development areas in Central Buckeye. In Figure 4.11, lands to be
developed are colored based on the development planning period. The development planning period is
dictated by the first phase in which an area will have in-service developments and does not mean that
area will be completely developed by that year.
4.5.4.3
Demand Projections
The Central Buckeye water distribution system was analyzed based on the ADD, MDD, and PHD for each
planning period. The demands for each planning period are summarized in Table 4.26. These demand
projections include land that can be developed by 2040 since the land has a CAWS or because the land
has a commercial or industrial land use classification that does not require a CAWS if not subdivided more
than six times. Figure 4.12 presents the land areas in Central Buckeye that are planned for development by
2040 and included in the flow projections in Table 4.26.
Table 4.26
Central Buckeye Demand Projections
Planning Year
Average Daily Water Demand (gpm)
MDD (gpm)
PHD (gpm)
2024
5,108
9,194
15,323
2030
8,943
16,098
26,830
2035
10,074
18,134
30,223
2040
11,345
20,421
34,036
4.5.4.4
Water System Capacity Evaluation
Water Supply Evaluation
Table 4.27 presents the results of a water supply evaluation to determine the required water supply
infrastructure in Central Buckeye for each planning phase. The required supply in each phase is dictated
by the City's performance criteria in Table 4.2.
10
a
assayampa
Palo Verde
10
Sundance Golf
Club
Raven Golf Club
at Verrado
Gila River
85
10
Robbins Butte
Wildlife Area
Valencia
Allenville
Conger
Buckeye
10
10
Loop 303
McMicken
Gila River
Liberty
!ã
!ã
!ã
!ã
!ã !ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
U
T"
=)
U
T"
=)
U
T"
=)
U
T"
=)
U
T"
=)
U
T"
=)
U
T"
=)
3
Q
3
Q
3
Q
Beloat Rd
Baseline Rd
Southern Ave
Broadway Rd
Lower
Buckeye Rd
Yuma Rd
Van Buren St
McDowell Rd
Thomas Rd
Indian
School Rd
Perryville Rd
195th Ave
Airport Rd
Dean Rd
Rainbow Rd
Watson Rd
Apache Rd
Miller Rd
Rooks Rd
Oglesby Rd
Turner Rd
Wilson Ave
Palo Verde Rd
Bruner Rd
Johnson Rd
Zone 3
Zone 2
Zone 1
Zone 3
Zone 4
Broadway
Well #3
Sonoran Vista
N.E. Well
Riata West
Well #2
Sonoran Vista
S.W. Well
Sun Valley
Well #2
Sun Valley
Well #1
North Airport
Rd Well #2
North Airport
Rd Well #1
Sundance
Well #4
Sundance
Well #8
Sundance
Well #1
Sundance
Well #3
Old Airport
Well "A"
Farallon
Well #2
Well #12
Well #14
Tartesso
Well #1
Tartesso
Well #2
Hopeville
Well #1
Buckeye
Airport
Well "B"
Sundance
Well #7
Bulfur/Primrose
Well #1
Sundance
Well #9
Tartesso
Well #3
Farallon
Well #1
Broadway
Well #2
Well #13
Broadway
Well #1
Sundance
North Airport
Jackie A.
Meck WC
Last Revised: November 03, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch02\
O
0
1
0.5
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: City of Buckeye.
Figure 4.11 Central Buckeye 2024 Water Distribution System
CITY OF BUCKEYE
Legend
3
Q
Water Campus or WTP
U
T"
=)
Storage & Booster
Pump
!ã
Well
Water Main (inches)
6 and Smaller
8
12
16
20
24
Pressure Zones
1
2
3
4
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
10
sayampa
Palo Verde
10
Sundance Golf
Club
Raven Golf Club
at Verrado
Gila River
85
10
Robbins Butte
Wildlife Area
Valencia
Allenville
Conger
Buckeye
10
10
Loop 303
McMicken
Gila River
Liberty
!ã
!ã
!ã
!ã
!ã !ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
U
T"
=)
U
T"
=)
U
T"
=)
U
T"
=)
U
T"
=)
U
T"
=)
U
T"
=)
3
Q
3
Q
3
Q
Beloat Rd
Baseline Rd
Southern Ave
Broadway Rd
Lower
Buckeye Rd
Yuma Rd
Van Buren St
McDowell Rd
Thomas Rd
Indian
School Rd
Perryville Rd
195th Ave
Airport Rd
Dean Rd
Rainbow Rd
Watson Rd
Apache Rd
Miller Rd
Rooks Rd
Oglesby Rd
Turner Rd
Wilson Ave
Palo Verde Rd
Bruner Rd
Johnson Rd
Monte Verde
Sundance
Sundance
Sundance
Sundance
Sundance
Copper Falls
Westwind
Silver Rock
Tartesso
Tartesso
Tartesso
Tartesso
Tartesso
West
Tartesso West
Elianto
Henry Park
Verrado
Sienna Hills
Desert Creek
Desert
Creek
Westpark
Westpark
Blue Horizons
Cipriani
Cipriani
Cipriani
Buckeye 252
Parkman Ranch
Miller
Crossings
Mountain View
Business Center
Mountain View
Business Center
Marwest
Marwest
Marwest
Former Cemex
Sand and
Gravel Quarry
Jackrabbit
Crossing
Paloma Vista
Mayfield
Algodon
Sundance
North Airport
Jackie A.
Meck WC
Last Revised: October 31, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch02\
O
0
1
0.5
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: City of Buckeye.
Figure 4.12 Central Buckeye Development Areas
CITY OF BUCKEYE
Legend
3
Q
Water Campus or WTP
U
T"
=)
Storage & Booster
Pump
!ã
Well
Water Main (inches)
6 and Smaller
8
12
16
20
24
Projected Development Phase
Existing
2030
2035
2040
Master Planned
Community
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-42
Table 4.27
Central Buckeye Water Supply Evaluation
Well(5)
Well Flow Rate
(gpm)
Planning Year Maximum Day Demand (gpm)
2024
2030
2035
2040
Broadway No. 1
180
180
180
180
180
Broadway No. 2
509
509
509
509
509
Broadway No. 3
180
180
180
180
180
Riata No. 2
400
400
400
400
400
Sonoran Vista NE Well
500
500
500
500
500
Sonoran Vista SW Well
420
420
420
420
420
North Airport Rd No. 1
2,400
2,400
2,400
2,400
2,400
North Airport Rd No. 2(1)
2,800
0
0
0
0
Farallon No. 1
500
500
500
500
500
Farallon No. 2
550
550
550
550
550
Sundance No. 1
700
700
700
700
700
Sundance No. 2
800
800
800
800
800
Sundance No. 3
700
700
700
700
700
Sundance No. 4
950
950
950
950
950
Sundance No. 7
500
500
500
500
500
Sundance No. 8
1,050
1,050
1,050
1,050
1,050
Sundance No. 9
500
500
500
500
500
Well No. 12
450
450
0
0
0
Well No. 14
300
300
0
0
0
Well No. 13
500
500
0
0
0
Westwind Well No. 1(4)
1,700
0
1,700
1,700
1,700
Westwind Well No. 2(4)
536
0
536
536
536
Hopeville Well No. 1(6)
250
0
0
250
250
New Well No. 1
850
0
850
850
850
New Well No. 2
850
0
850
850
850
New Well No. 3
850
0
850
850
850
New Well No. 4
850
0
850
850
850
New Well No. 5
850
0
850
850
850
New Well No. 6
850
0
850
850
850
New Well No. 7
850
0
850
850
850
New Well No. 8
850
0
850
800
850
New Well No. 9
850
0
850
850
850
New Well No. 10
850
0
0
850
850
New Well No. 11
850
0
0
850
850
New Well No. 12
850
0
0
850
850
New Well No. 13
850
0
0
850
850
New Well No. 14
850
0
0
0
850
New Well No. 15
850
0
0
0
850
New Well No. 16
850
0
0
0
850
EPCOR White Tanks Surface Water(3)
1,700
1,700
1,700
1,700
1,700
Firm Supply(2)(7
25,745
10,669
17,244
19,944
21,894
MDD
–
9,194
16,098
18,134
20,421
Surplus/(Deficit)
–
1,476
1,146
1,810
1,472
Notes:
(1) North Airport Road No. 2 shown as offline for redundancy.
(2) The City is expected to lose access to the supply from Wells No. 12, 13, and 14 for Historic Buckeye by 2027.
(3) The EPCOR White Tanks supply is expected to be online by June 2025. Considered as existing for analysis.
(4) Westwind Wells are existing and will deliver to the proposed Westpark WSF-2 Water Campus.
(5) Additional Westpark and Grandview WTP wells will be added but the number and capacities of these wells are not yet known.
(6) Hopeville Well No. 1 is existing but not currently used due to high TDH, silt, or other concentration exceeding EPA MCL.
(7) Firm supply assumes wells operate 75% of the time with 15% redundancy, per COB EDS 3-5.301, plus the EPCOR supply
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-43
Table 4.27 shows a current deficit that is likely being addressed by pumping beyond the firm capacity with
existing wells. In addition, six new wells will be required to meet demand requirements by 2030, an
additional two wells by 2035, and eight more wells by 2040. An assumption of 850 gpm per well was
assumed based on the production of other Central Buckeye wells. The actual number of wells needed to
serve Central Buckeye will depend on actual well flows. Additional wells will be constructed to supply the
Westpark and Grand View WTPS. The number of required wells can also be reduced by increasing water
deliveries through the EPCOR White Tanks SWTP.
The City is expected to lose the water supply provided to Historic Buckeye from Wells No. 12, No. 13, and
No. 14 by 2027. These wells will then be used to serve private developments in the Cipriani area. An
analysis of the water supply for Cipriani is provided below in Table 4.28.
Table 4.28
Cipriani Water Supply Evaluation
Well/Plant
Total Capacity
(gpm)
Planning Year MDD (gpm)
2024
2030
2035
2040
Well No. 12(1)
320
0
0
0
0
Well No. 14
300
0
300
300
300
Well No. 13
500
0
500
500
500
New Cipriani Well No. 1
800
0
800
800
800
New Cipriani Well No. 2
800
0
800
800
800
New Cipriani Well No. 3
800
0
800
800
800
New Cipriani Well No. 4
800
0
0
800
800
New Cipriani Well No. 5
800
0
0
800
800
New Cipriani Well No. 6
800
0
0
0
800
Firm Supply(2)
5,920
0
2,400
3,600
4,200
MDD
–
0
2,302
2,980
3,743
Surplus/(Deficit)
–
0
98
620
457
Notes:
(1) Well No. 12 shown as offline for redundancy.
(2) Firm Capacity is the well production x 0.75.
Pumping Capacity Evaluation
Table 4.29 presents an evaluation of the required pump station infrastructure in Central Buckeye for each
planning period. The required pumping capacity in each phase is dictated by the City's performance
criteria summarized in Table 4.2. Central Buckeye contains a mix of residential, commercial, and industrial
developments, so the industrial fire flow requirement of 5,000 gpm was used in the evaluation.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-44
Table 4.29
Central Buckeye Water Pumping Capacity Evaluation
Booster Pump Station
Number of
Pumps
Capacity (gpm) or Demand (gpm)
Firm
2024
2030
2035
2040
Bales(2)
3
1,000
1,000
0
0
0
Buckeye North
4
500
500
500
500
500
Farallon
4
6,000
0
6,000
6,000
6,000
Jackie A. Meck (Zone 2)
5
5,024
5,024
5,024
5,024
5,024
Jackie A. Meck (Zone 1)
4
5,205
5,205
5,205
5,205
5,205
Lower Buckeye(1)
0
0
0
0
0
0
North Airport Road(3)
6
6,500
0
0
0
0
Rancho Vista(2)
5
1,850
1,850
0
0
0
Sundance Zone 2
5
3,000
3,000
3,000
3,000
3,000
Sundance Zone 3
6
6,000
6,000
6,000
6,000
6,000
West Park(2)
5
4,000
4,000
0
0
0
Historic Buckeye(4)
3
2,500
2,500
2,500
2,500
2,500
WTP 5
TBD
3,000
0
0
3000
3000
WTP 11
TBD
3,000
0
0
0
3000
Westpark WTP(7)
TBD
3,000
0
3,000
3,000
3,000
Grand View WTP(7)
TBD
3,000
0
0
0
3,000
Total Pumping Capacity
53,579
26,579
31,229
34,229
40,229
Required Capacity(5)(6)
15,323
26,830
30,223
34,036
Surplus/Deficit
11,256
4,399
4,006
6,193
Notes:
(1) Lower Buckeye is offline and not expected to be brought back online.
(2) Bales, Rancho Vista, and West Park are planned to be bypassed by 2030.
(3) North Airport Road taken offline for redundancy.
(4) The City is planning to rehabilitate the Historic Buckeye station by 2030.
(5) Industrial fire flow requirement (5,000 gpm) used for analysis.
(6) Required capacity calculated as the larger of (a) PHD or (b) MDD plus fire flow requirement.
(7) Westpark and Grand View WTP capacity is assumed.
Two additional groundwater WTPs are planned by 2040. Table 4.29 shows that two new pump stations at
the proposed WTP 5 and WTP 11 sites are required to meet pumping requirements through 2040.
Table 4.30 provides a pumping capacity analysis for the Cipriani development area.
Table 4.30
Cipriani Water Pumping Capacity Evaluation
Booster Pump Station
Number of
Pumps
Capacity (gpm) or Demand (gpm)
Firm
2024
2030
2035
2040
Cipriani BPS
TBD
7,500
0
7,500
7,500
7,500
Cipriani BPS Expansion
TBD
3,000
0
0
3,000
3,000
Total Pumping Capacity
10,500
-
7,500
10,500
10,500
Required Capacity(1)(2)
-
6,281
7,304
7,900
Surplus/(Deficit)
0
1,219
3,196
2,600
Notes:
(1) Industrial fire flow requirement (5,000 gpm) used for analysis.
(2) Required capacity calculated as the larger of (a) PHD or (b) MDD plus fire flow requirement.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-45
Storage Capacity Evaluation
Table 4.31 presents an evaluation of the required water storage infrastructure in Central Buckeye for each
planning phase. The required storage in each phase is dictated by the City's performance criteria
summarized in Table 4.2. The City has a project to replace the two existing 1.05 MG tanks at North Airport
with a single 4.0 MG concrete reservoir by 2030. The City's CIP program also shows that the existing
1.5 MG Sundance 2 reservoir will be replaced with a 4.0 MG concrete reservoir by 2030. The Jackie A.
Meck Water Campus currently has a single 4.0 MG reservoir but is planned to be expanded with a second
and third reservoir. The Farallon Water Campus will initially have a 2.0 MG reservoir, but it is planned to be
expanded to have a 4.0 MG storage capacity.
Table 4.31
Central Buckeye Water Storage Evaluation
Tank
Rated Capacity
(MG)
Available Capacity (MG)
2024
2030
2035
2040
Bales 1(2)
0.6
0.6
0.0
0.0
0.0
Bales 2(2)
0.5
0.5
0.0
0.0
0.0
Westpark(2)
0.5
0.5
0.0
0.0
0.0
Westpark(2)
0.2
0.2
0.0
0.0
0.0
Rancho Vista(2)
0.8
0.8
0.0
0.0
0.0
Jackie A. Meck
12.0
4.0
8.0
12.0
12.0
Lower Buckeye(1)
0.0
0.0
0.0
0.0
0.0
Buckeye North WTP
0.2
0.2
0.2
0.2
0.2
Sundance 2
1.5
1.5
4.0
4.0
4.0
Sundance 1
2.6
2.6
2.6
2.6
2.6
North Airport Road 1
4.0
1.0
4.0
4.0
4.0
North Airport Road 2
1.0
1.0
0.0
0.0
0.0
Farallon(3)
2.0
0.0
2.0
2.0
4.0
WTP 5
4.0
0.0
0.0
2.0
2.0
WTP 11
4.0
0.0
2.0
2.0
2.0
Westpark WTP(5)
4.0
0.0
4.0
4.0
4.0
Grand View WTP(5)
4.0
0.0
0.0
0.0
4.0
Total Capacity
41.9
12.9
22.8
30.8
42.8
Required Capacity(4)
9.2
16.1
18.1
20.4
Surplus/(Deficit)
3.7
6.7
12.7
22.4
Notes:
(1) Lower Buckeye is offline and not expected to be brought back online.
(2) Bales, Rancho Vista, and West Park are planned to be bypassed by 2030.
(3) Farallon storage is designed to be expandable to 4 MG.
(4) Required capacity is calculated as one day of ADD without using more than 80% of the total storage capacity without wells.
(5) Westpark and Grand View WTP capacities are assumed; actual capacities are not known.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-46
Table 4.32 shows that the City's existing and planned storage facilities are sufficient to meet storage
requirements through 2040. In addition, two new storage tanks are listed at the proposed WTP 5 and
WTP 11 sites as these sites are required for pumping capacity, and storage is needed at each site.
Table 4.32 provides an analysis of the Cipriani development area's storage requirements.
Table 4.32
Cipriani Water Storage Evaluation
Tank
Rated Capacity
(MG)
Available Capacity (MG)
2024
2030
2035
2040
Cipriani Tank 1
2.0
0.0
2.0
2.0
2.0
Cipriani Tank 2
2.0
2.0
Total Capacity
4.0
0.0
4.0
4.0
4.0
Required Capacity(1)
0.0
1.3
2.3
2.9
Surplus/(Deficit)
0.0
2.7
1.7
1.1
Notes:
(1) Required capacity is calculated as one day of ADD without using more than 80% of the total storage capacity without wells.
Water Distribution System Evaluation
The PHD condition was used to evaluate the water distribution system. The water system was evaluated
against the City's performance criteria, as summarized in Table 4.2 using the hydraulic model. The model
analysis showed that maximum velocities were below 5 fps. Pressures in Central Buckeye were in the
range of 50 to 110 psi during the PHD evaluation. The PHD pressures and pipe velocities are shown in
Appendix 2A, Figure 4A.4.
A MDD plus fire flow model analysis was completed. Portions of the distribution system in Historic
Buckeye and Phoenix Skyline West did not meet minimum pressure requirements. This is due to the old,
small-diameter pipes in these areas that were not sized to deliver current fire flow requirements. Pipe
replacement projects are recommended to improve fire flow capacity.
4.5.4.5
Infrastructure Projects
The recommended infrastructure projects for Central Buckeye include the new wells, pump stations, and
storage tanks detailed in the previous sections. Additionally, transmission mains to serve future
developments within Central Buckeye and groundwater treatment for the wells are included. The
recommended capital projects are presented in Figure 4.13 and summarized in Table 4.33 for Central
Buckeye.
The Trigger column in Table 4.33 identifies when a project needs to be in service. Projects to address
known deficiencies are assigned the 2030 planning year so that the projects are completed in the next
5 years. Other projects need to be constructed in time to make sure that the performance criteria can be
met. For example, the MDD will increase with new growth so the timing of new wells needs to align with
the requirement to supply MDDs. Some projects will be constructed when growth occurs in a
geographical area. For example, a transmission main project serving a completely new development will
need to be in place when that development is being constructed. For these projects, the trigger is the
timing of a development, and the planning year of anticipated development is also provided to give the
approximate time. As conditions change, the City will be able to make near-term adjustments to the time
a project should start so that the project can be completed on time.
10
sayampa
Palo Verde
10
Sundance Golf
Club
Raven Golf Club
at Verrado
Gila River
85
10
Robbins Butte
Wildlife Area
Valencia
Allenville
Conger
Buckeye
10
10
Loop 303
McMicken
Gila River
Liberty
!ã
!ã
!ã
!ã
!ã !ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
U
T"
=)
U
T"
=)
U
T"
=)
U
T"
=)
U
T"
=)
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
3
Q
Beloat Rd
Baseline Rd
Southern Ave
Broadway Rd
Lower
Buckeye Rd
Yuma Rd
Van Buren St
McDowell Rd
Thomas Rd
Indian
School Rd
Perryville Rd
195th Ave
Airport Rd
Dean Rd
Rainbow Rd
Watson Rd
Apache Rd
Miller Rd
Rooks Rd
Oglesby Rd
Turner Rd
Wilson Ave
Palo Verde Rd
Bruner Rd
Johnson Rd
W27
W27
W27
W76
W76
W83
W83
W77
W27
W24
W24
W25
W83
W83
W82
W82
W76
W77
W82
W24
W76
W76
W76
W28
W30
W27
W32
W78
W83
W83
W83
W83
W79
W73
W73
W77
W77
W81
W81
W81
W73
W81
W81
W81
W75
W72
W83
W72
W84
W27
W27
W25
W77
W76
W76
W56
W75
W27
W27
W29
W28
W81
W83
W31
W29
W77
W76
W76
W27
W74
W74
W32
W32
W80
W80
W56
W56
W57
W57
W44.2
W37.2
W89.2
W42.2
W67.2
W38.2
W39.2
W90.1
W86.2
W70.2
W18.3
W41.2
W45.2
W42.2
W43.2
W69.2
W88.2
W39.1
W40.1
W41.1
W37.1
W43.1
W42.1
W44.1
W45.1
W46.1
W47.1
W38.1
W48.1
W67.1
W69.1
W68.1
W70.1
W85.1
W86.1
W87.1
W88.1
W90.1
W91
Sundance
North Airport
Farallon WC
Jackie A.
Meck WC
WTP 5
WTP 11
W36
W53
W49
W92
W22
W35
W93
Last Revised: October 31, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch02\
O
0
1
0.5
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: City of Buckeye.
Figure 4.13 Central Buckeye Recommended Water Distribution Infrastructure
CITY OF BUCKEYE
Legend
3
Q
Water Campus or WTP
3
Q
Proposed WTP
U
T"
=)
Storage & Booster
Pump
U
T"
=)
Proposed Booster Pump
Station
!ã
Well
!ã
Proposed Well
Water Main (inches)
6 and Smaller
8
12
16
20
24
Proposed Water Main (inches)
12
16
24
Proposed Raw Water
Main
Projected Development Phase
Existing
2030
2035
2040
Master Planned
Community
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-48
Table 4.33
Central Buckeye Recommended Infrastructure Projects
Project
ID
Facility Type
Description
Justification
Diameter/Size
(in/MG/mgd/gpm/AF)
Length/Qty
(feet or no.)
Project Trigger (Year)
W27
Potable Water Mains
Transmission Mains (SR 85 to Miller Road)
Convey water to projected future developments between SR 85 and Miller Road.
16 inches
44,250
Development in the Area (2030).
W28
Potable Water Mains
Transmission Mains (Miller Road to Dean Road)
Convey water to projected future developments between Miller Road and Dean Road.
16 inches
10,050
Development in the Area (2030).
W29
Potable Water Mains
Transmission Mains (Miller Road to Dean Road)
Convey water to projected future developments between Miller Road and Dean Road.
16 inches
10,550
Development in the Area (2035).
W30
Potable Water Mains
North Airport Transmission Mains
Convey Water to projected future developments in North Airport area.
16 inches
2,250
Development in the Area (2030).
W31
Potable Water Mains
North Airport Distribution Mains
Convey Water to projected future developments in North Airport area.
12 inches
5,300
Development in the Area (2030).
W32
Potable Water Mains
North Airport Transmission Mains
Convey Water to projected future developments in North Airport area.
16 inches
10,800
Development in the Area (2035).
W80
Potable Water Mains
North Airport Transmission Mains
Convey Water to projected future developments in North Airport area.
16 inches
9,350
Development in the Area (2040).
W72
Potable Water Mains
Cipriani Distribution Mains
Convey water to projected future Cipriani developments.
12 inches
10,500
Development in the Area (2030).
W73
Potable Water Mains
Cipriani Distribution Mains
Convey water to projected future Cipriani developments.
12 inches
13,100
Development in the Area (2035).
W74
Potable Water Mains
Cipriani Distribution Mains
Convey water to projected future Cipriani developments.
12 inches
9,800
Development in the Area (2040).
W75
Potable Water Mains
West of SR 85 Transmission Mains
Convey water to projected future developments west of SR 85.
16 inches
41,750
Development in the Area (2030).
W76
Potable Water Mains
West of SR 85 Transmission Mains
Convey water to projected future developments west of SR 85.
16 inches
24,650
Development in the Area (2035).
W77
Potable Water Mains
West of SR 85 Distribution Mains
Convey water to projected future developments west of SR 85.
12 inches
5,250
Development in the Area (2035).
W78
Potable Water Mains
West of SR 85 Transmission Mains
Convey water to projected future developments west of SR 85.
16 inches
2,600
Development in the Area (2040).
W79
Potable Water Mains
West of SR 85 Distribution Mains
Convey water to projected future developments west of SR 85.
12 inches
8,550
Development in the Area (2040).
W81
Potable Water Mains
Liberty Transmission Mains
Convey water to projected future Liberty developments.
16 inches
39,650
Development in the Area (2035).
W82
Potable Water Mains
Liberty Distribution Mains
Convey water to projected future Liberty developments.
12 inches
10,650
Development in the Area (2035).
W83
Potable Water Mains
Liberty Transmission Mains
Convey water to projected future Liberty developments.
16 inches
45,050
Development in the Area (2040).
W84
Potable Water Mains
Liberty Distribution Mains
Convey water to projected future Liberty developments.
12 inches
2,700
Development in the Area (2040).
W35
Groundwater Treatment
Farallon RO Treatment
Treat groundwater from existing and future wells.
8 mgd
1
As needed to treat groundwater from new wells.
W36
Groundwater Treatment
Airport Arsenic Treatment Expansion
Treat groundwater from existing and future wells.
TBD
1
As needed to treat groundwater from new wells.
W37.1
Well
New Well No. 1
Meet water supply demands for projected future developments.
850 gpm
1
MDD of 9,874 gpm(1)
W38.1
Well
New Well No. 2
Meet water supply demands for projected future developments.
850 gpm
1
MDD of 10,511 gpm(1)
W89.1
Well
New Well No. 3
Meet water supply demands for projected future developments.
850 gpm
1
MDD of 11,148 gpm (1)
W90.1
Well
New Well No. 4
Meet water supply demands for projected future developments.
850 gpm
1
MDD of 11,785 gpm (1)
W41.1
Well
New Well No. 5
Meet water supply demands for projected future developments.
850 gpm
1
MDD of 12,422 gpm (1)
W42.1
Well
New Well No. 6
Meet water supply demands for projected future developments.
850 gpm
1
MDD of 13,059 gpm (1)
W43.1
Well
New Well No. 7
Meet water supply demands for projected future developments.
850 gpm
1
MDD of 13,696 gpm (1)
W44.1
Well
New Well No. 8
Meet water supply demands for projected future developments.
850 gpm
1
MDD of 14,333 gpm (1)
W45.1
Well
New Well No. 9
Meet water supply demands for projected future developments.
850 gpm
1
MDD of 14,970 gpm (1)
W46.1
Well
New Well No. 10
Meet water supply demands for projected future developments.
850 gpm
1
MDD of 15,607 gpm (1)
W47.1
Well
New Well No. 11
Meet water supply demands for projected future developments.
850 gpm
1
MDD 16,244 gpm (1)
W48.1
Well
New Well No. 12
Meet water supply demands for projected future developments.
850 gpm
1
MDD of 16,881 gpm (1)
W67.1
Well
New Well No. 13
Meet water supply demands for projected future developments.
850 gpm
1
MDD of 17,518 gpm (1)
W68.1
Well
New Well No. 14
Meet water supply demands for projected future developments.
850 gpm
1
MDD of 18,155 gpm (1)
W69.1
Well
New Well No. 15
Meet water supply demands for projected future developments.
850 gpm
1
MDD of 18,792 gpm (1)
W70.1
Well
New Well No. 16
Meet water supply demands for projected future developments.
850 gpm
1
MDD of 19,429 gpm (1)
W39.1
Well
New Cipriani Well No. 1
Meet water supply demands for projected future developments.
800 gpm
1
Cipriani MDD of 1,200 gpm (1)
W40.1
Well
New Cipriani Well No. 2
Meet water supply demands for projected future developments.
800 gpm
1
Cipriani MDD of 1,800 gpm (1)
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-49
Project
ID
Facility Type
Description
Justification
Diameter/Size
(in/MG/mgd/gpm/AF)
Length/Qty
(feet or no.)
Project Trigger (Year)
W85.1
Well
New Cipriani Well No. 3
Meet water supply demands for projected future developments.
800 gpm
1
Cipriani MDD of 2,400 gpm (1)
W86.1
Well
New Cipriani Well No. 4
Meet water supply demands for projected future developments.
800 gpm
1
Cipriani MDD of 3,000 gpm (1)
W87.1
Well
New Cipriani Well No. 5
Meet water supply demands for projected future developments.
800 gpm
1
Cipriani MDD of 3,600 gpm (1)
W88.1
Well
New Cipriani Well No. 6
Meet water supply demands for projected future developments.
800 gpm
1
Cipriani MDD of 4,200 gpm (1)
W37.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
2,450
Concurrent with W37.1
W38.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
950
Concurrent with W38.1
W39.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
900
Concurrent with W39.1
W40.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
2,850
Concurrent with W40.1
W41.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
4,950
Concurrent with W41.1
W42.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
5,300
Concurrent with W42.1
W43.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
5,100
Concurrent with W43.1
W44.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
20,500
Concurrent with W44.1
W45.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
3,750
Concurrent with W45.1
W46.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
2,700
Concurrent with W46.1
W47.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
1,250
Concurrent with W47.1
W48.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
1,600
Concurrent with W48.1
W67.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
600
Concurrent with W67.1
W68.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
1,550
Concurrent with W68.1
W69.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
6,900
Concurrent with W69.1
W70.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
1,400
Concurrent with W70.1
W85.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
1,250
Concurrent with W85.1
W86.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
1,100
Concurrent with W86.1
W87.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
1,300
Concurrent with W87.1
W88.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
1,450
Concurrent with W88.1
W89.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
500
Concurrent with W89.1
W90.2
Raw Water Pipeline
Raw Water Pipeline to Treatment Facility
Convey water from wells to treatment facility.
8 inches
950
Concurrent with W90.1
W49
Groundwater Treatment
WTP 11 Site Treatment
Treat, store, and pump groundwater from existing and future wells.
4.25 mgd
1
As needed to serve nearby developments.
W50
Storage
North Airport Road Water Campus Expansion
Replace existing steel tanks with concrete storage reservoir.
4 MG
1
Development in the Area (2030).
W51
Storage
Sundance Water Campus Expansion
Replace existing steel tanks with concrete storage reservoir.
4 MG
1
Development in the Area (2030).
W52.1
Storage
Additional Jackie A. Meck Storage
Meet storage requirements for projected future developments.
4 MG
1
Development in the Area (2035).
W52.2
Storage
Additional Jackie A. Meck Storage
Meet storage requirements for projected future developments.
4 MG
1
Development in the Area (2040).
W53.1
Storage
Farallon Storage
Meet storage requirements for projected future developments.
2 MG
1
Development in the Area (2030).
W54.1
Pump Station
Farallon Pumping
Meet pumping capacity requirements for projected future developments.
8.5 mgd
1
Development in the Area (2030).
W91.1
Pump Station
Cipriani Storage and Pumping
Meet pumping capacity requirements for projected future developments.
10.8 mgd
1
Development in the Area (2030).
W91.2
Pump Station
Cipriani Pumping Expansion
Meet pumping capacity requirements for projected future developments.
4.3 mgd
1
As needed to meet future Cipriani growth (2035).
W92
Groundwater Treatment
Westpark Site Treatment(2)
Treat, store, and pump groundwater from future wells
4.5 mgd
1
Development in the Area (2030).
W93
Groundwater Treatment
Grand View Site Treatment(2)
Treat, store, and pump groundwater from future wells
4.5 mgd
1
Development in the Area (2035).
Notes:
(1) The timing of well projects is dependent on the flow rate performance of any new constructed wells and assumes that all existing well flow rates remain constant.
(2) Capacity is assumed.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
4-50
4.6
Conclusion and Recommendations
1. In Sun City Festival, additional storage and pumping requirements associated with growth will require
facilities that do not fit on the current site. Additional capacity may need to be provided at an
additional storage, treatment, and pumping site. Longer term, a future surface water treatment is
planned near the development, so the additional storage and pumping capacity may be provided at
that site. The land to be acquired for a SWTP should be large enough to enable plant expansions.
Some of the smaller WTPs in Maricopa County are 15 acres. Middle-range treatment plants are about
40 acres.
2. The Floreo development will begin with groundwater supplies. In the future, water supplies could be
partially provided by a SWTP at the CAP canal and a transmission main from the treatment plant to
Floreo.
3. The Tartesso development area will have a well-based water supply system with additional wells
located on the western side of the developments where groundwater availability is higher. One
additional treatment, storage, and booster station site will be needed. In the future, surface water
supplies could come from the SWTP along the CAP canal, with a transmission main along Sun Valley
Parkway Locating future wells near groundwater recharge facilities will increase the number of useful
groundwater recharge credits that can be used from groundwater recharge.
4. The Cipriani development will be served by a new, stand-alone water supply system within the
planning period of this IWMP.
5. In Central Buckeye, water supplies for growth will come from wells located near the northeastern and
northwestern portions of Central Buckeye where water supplies and water quality are better. To the
extent possible, the existing water production and treatment sites of North Airport Road, Jackie A.
Meck, and Farallon will be used. When required by growth, one well treatment, storage, and pumping
site named WTP 5 will be constructed west of SR 85, a second water treatment site named WTP 11
will be constructed in eastern Central Buckeye north of the Buckeye Canal to serve the Liberty area.
6. A Westpark Water Campus will be constructed near South 266th Avenue and West Warner Street, and
a Grand View WTP will be constructed north of the Buckeye Canal on South Dean Road
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-1
CHAPTER 5 WASTEWATER MASTER PLAN
5.1
Introduction
Chapter 5 presents the wastewater system master plan as part of the 2025 IWMP. The purpose of the
WWMP is to identify the wastewater system growth, infrastructure improvements, and timing to serve the
City's needs through the 2030, 2035, and 2040 infrastructure planning periods. A hydraulic model was
prepared to evaluate the capacity of the collection system in each infrastructure planning period to
develop the Master Plan. Proposed future infrastructure was evaluated, the timing of future WWTF
expansions was determined, and a plan for future collection system expansion was developed.
The outline of this chapter is as follows:
1. Wastewater System Overview – This section contains a summary of the overall wastewater system
and the strategies that will be implemented in the plan.
2. Performance Criteria – This section documents the performance criteria used to evaluate wastewater
system infrastructure, which is based to a large extent on the City's EDS.
3. Hydraulic Model – This section describes the wastewater collection system model used for the
collection system capacity evaluations.
4. Master Plan by Wastewater Service Area – This section presents the Master Plan, including
infrastructure projects arranged by these wastewater systems: Sun City Festival, Floreo at Teravalis
(Floreo), Tartesso, and Central Buckeye. Each wastewater system section contains the following
subsections:
a. 2024 Wastewater Infrastructure Description.
b. Future Infrastructure.
c.
Collection System Evaluation.
d. Wastewater System Infrastructure Improvement Program.
5. Conclusions and Recommendations – This section contains conclusions and recommendations that
are not infrastructure projects.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-2
5.2
Wastewater System Overview
This IWMP study area covers those portions of the City that are north of the Gila River and that are not
served by EPCOR. The study area covers approximately 432 square miles, although a portion of the land is
mountainous and will not be developed. In the first phase of the IWMP, the planning area was grouped
into six different WPAs (formerly called DAWS planning areas) that were originally seen as areas that
could possibly become a designation of assured water supply. These geographical areas are significant for
the wastewater system also because each area has one or more wastewater collection basins that deliver
wastewater to a WRF.
This IWMP covers growth through 2040, which is only a portion of the land in each WPA. The land areas
planned for growth include developments that have a CAWS and land zoned industrial or commercial that
may not need a CAWS if land parcels are not subdivided into more than six parcels. The land parcels are
grouped by the planning periods within which the land is expected to develop: 2030, 2035, and 2040.
Therefore, the infrastructure planned in this master plan focuses on the land areas planned to
development by 2040.
Figure 5.1 presents the WPAs and the land areas that are planned to develop by 2040, colored by
planning period.
WR F
WR F
WR F
WR F
WWPP
WR F
WR F
WR F
WR F
Tartesso West
Elianto
Sun
Valley South
Cipriani
Sun Valley
Villages
I and II
Floreo
at Teravalis
North Star
Ranch
Festival
Ranch
Teravalis
Festival
Ranch
WPA 1
WPA 3
WPA 5
WPA 2
WPA 4A
WPA 4B
RID Ca
nal
Buckeye
Canal
WRF 3
WRF 4/Grand
View
WRF
Floreo WRF
North Star WRF
Cipriani Package Plant
Central WRF
Sundance WRF
Tartesso WRF
Festival WRF
Last Revised: October 31, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch02\
O
0
3
1.5
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5.1 Water Planning Areas and Development Planning Periods
CITY OF BUCKEYE
Legend
Water Planning
Area
WR F
Existing WRF
WR F
Future WRF
WWPP Future WWPP
Canal
Projected Development
Phase
Existing
2030
2035
2040
Post 2040
Master Planned
Community
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-4
5.2.1
Wastewater Infrastructure Development Strategy
Each WPA has unique water supplies and water supply strategies that influence the infrastructure that is
being planned in each WPA, including wastewater infrastructure. This section provides background
information and then a more detailed evaluation of each area is presented in Section 5.5.
5.2.1.1
WPA 1
WPA 1 currently includes two developments: the Sun City Festival development and the Floreo
development. Sun City Festival is currently partially developed and is expected to fully develop by 2040.
Floreo is currently being constructed. Both developments have a WRF serving the development. The City
would like the Floreo WRF to also serve the development in between the Sun City Festival and Floreo
development, named the Sun Valley Villages I and II. Sewer trunk main sizing running north through
Floreo would need to be upsized if some of this middle area sewers to Floreo. The Wastewater Master
Plan for Floreo also identifies a portion of the Sun Valley east/southeast of Floreo potentially sewering the
Floreo WRF at buildout. Any of these additional areas would require a 208 Amendment, and additional
land would need to be acquired for the expanded plant size.
North of the CAP, the Sun City Festival, and North Star Ranch developments will have a WRF north of the
canal. The Teravalis development is expected to deliver wastewater to a future Teravalis WRF.
5.2.1.2
WPA 2
The Tartesso WRF is planned to be a regional facility that serves the developments in WPA 2. The gravity
sewer mains delivering wastewater to the Tartesso WRF is 60 inches in diameter, so it was designed to
convey wastewater flows from a large area. However, the City does not own enough land at the current
site to expand the Tartesso WRF to serve all of WPA 2, so the City will need to find a way to obtain
additional land to expand or relocate the WRF.
5.2.1.3
WPA 3, 4A, and 4B
Central Buckeye currently has two WRFs: Central WRF and Sundance WRF. The Sundance WRF serves the
WPA 3 north of the RID canal and west of Perryville Road. The Central WRF is currently planned to serve
the rest of Central Buckeye east of SR 85 and the Westpark development west of SR85.
A Grand View WRF (formerly WRF 6 and WRF 4) could serve land areas east of Dean Road. However, the
City's preference is to send the wastewater flows to the Central WRF and not the Grand View WRF.
One WRF is planned to serve land west of SR 85. This WRF is referred to as WRF 3 (formerly WRF 5). One
of the options that may be considered for Cipriani is to have a temporary package wastewater plant serve
the Cipriani development until infrastructure is in place to more economically connect the Cipriani
development to WRF 3 after WRF 3 is constructed.
5.2.1.4
WPA 5
Much of WPA 5 is served by EPCOR's WRF, except for a 1-mile strip of land going north to Bethany Home
Road. This strip of land is served by the Sundance WRF. A significant portion of this area is served by
septic systems.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-5
5.3
Wastewater System Performance Criteria
Performance criteria are the standards of measurement used to evaluate the adequacy of wastewater
collection system infrastructure, including pipes (gravity and force main), lift stations, and treatment
facility capacity. Performance criteria are based on legal requirements and engineering best practices. The
City's EDS, adopted in 2025, contain the performance criteria used in the 2025 IWMP with a few additions
and agreed upon revisions for this master planning effort. The IWMP does not replace engineering design
in compliance with the Buckeye EDS and code requirements.
The performance criteria used in the 2025 IWMP are described below.
5.3.1
Gravity Sewer Main Capacity
Sewer main capacity depends on several factors, including pipe roughness, maximum allowable flow
depth, limiting velocity, and pipe slope.
Gravity sewer mains should be designed and constructed to have a minimum of 6 feet of cover and a
minimum separation of 6 feet from potable water mains and reclaimed water mains unless the mains are
provided with increased protection in accordance with EDS Section 4-1.203.
5.3.1.1
Pipe Roughness
The Manning's coefficient 'n' is a friction coefficient that varies based on pipe material, size of pipe, depth
of flow, smoothness of joints, root intrusion, and other factors. The A.A.C. requires a Manning's coefficient
of 0.013 to design new sewer mains (EDS Section 4-1.202). For master planning purposes, an 'n' value of
0.013 is used.
5.3.1.2
Flow Depth
A flow depth capacity criterion is used to evaluate pipe capacity. This criterion is expressed as a ratio of
maximum depth of flow (d) to pipe diameter (D).
The EDS requires that new sewer mains should be sized for a d/D ratio of 0.75 during peak hour flow. The
d/D for evaluating the capacity of existing sewer mains is recommended to be 0.82 because there is no
need to replace an existing sewer main until flows are at the maximum capacity of the pipe, and in
developed areas, flows are easier to predict than in undeveloped areas. This approach allows full use of
existing sewer main capacity and avoids upsizing sewer mains prematurely.
To minimize solids settlement in the pipe and to promote scouring, the standard practice is to size pipes
for a minimum velocity of 2 fps when the pipe is flowing full. At this velocity, sewer flows will typically
provide pipe self-cleaning.
Table 5.1 lists the minimum slopes for maintaining self-cleaning velocities. The minimum slope listed in
the table is 0.0008 foot per foot (ft/ft), which is the minimum practical slope for gravity sewer main
construction.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-6
Table 5.1
Gravity Sewer Main Minimum Slope Requirements
Pipe Diameter (inches)
Minimum Slope (ft/ft)
Dead-end
0.0075
8
0.0040
10
0.0024
12
0.0019
15
0.0014
18
0.0011
21
0.0009
24
0.0008
≥ 36
0.0008
Greater slopes are desirable if possible, provided the wastewater velocity does not exceed the maximum
velocity criteria of 9 fps as defined in the EDS.
5.3.1.3
Manholes
Manholes are typically installed at grade changes, changes in sewer main sizes, alignment changes, and
intersections with other sewer mains. Manholes should be located to facilitate sewer cleaning. Table 5.2
lists the recommended maximum manhole spacing for different sewer main diameters.
Table 5.2
Maximum Manhole Spacing
Pipe Diameter (inches)
Maximum Manhole Spacing (feet)
8-15
400
18-30
500
≥ 36
600
Manholes with sewer mains intersecting at a 60-degree to 90-degree angle should provide 0.2 feet of
invert drop across the manhole. Other manholes with sewer mains intersecting at less than or equal to
60-degree angles should provide a minimum of 0.1 feet of invert drop.
5.3.2
Lift Station Capacity
Lift stations should be sized for a "firm" capacity greater than the peak daily flow rate for the planned
service area. Lift station firm capacity was compared to the peak hour inflow and sized to pump the
maximum daily flow with the largest pump out of service.
Lift station wet well sizing takes into consideration the fill time based on average flow and the minimum
pump cycle. The A.A.C. R-18-9-E301(D) requires that the minimum wet well volume in gallons be
one-quarter of the product of the minimum pump cycle time in minutes and the total pump capacity in
gpm. The volume of the wet well should provide a retention period not to exceed 30 minutes of average
daily design flow. Additionally, regional lift stations should be provided with additional wet well capacity
for redundancy. The pump manufacturer's daily cycle recommendations should be used when selecting
the minimum cycle time. Starting and stopping more than seven times an hour for any one pump is not
recommended.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-7
5.3.3
Force Mains
The EDS requires that force mains be sized to maintain a minimum flow velocity between 2 fps and 9 fps
(EDS 4-1.202). A minimum velocity of 2 fps promotes scouring so that the solids deposited in the force
main while the pumps are off will be transported downstream when the pumps are operating.
A Hazen-Williams friction coefficient of 120 was used for force mains.
5.3.4
Water Reclamation Facilities
Maricopa County is responsible for enforcing state regulations associated with water quality related to
WRFs. WRF performance criteria requirements include the required design capacity of the treatment
facility. When the average day maximum monthly (ADMM) flow reaches 80 percent of the rated design
capacity of a WRF, design for a facility expansion must be initiated. When the ADMM flow reaches
90 percent of the rated design capacity, construction of the expansion needs to have commenced.
5.3.5
Peaking Factors
The City's EDS uses the population-based peaking factor as defined by ADEQ in R18-9-E301 for analyzing
wastewater pipeline capacity. Table 5.3 shows the PFs for each upstream population range.
Table 5.3
Population Peaking Factor
Upstream Population
Peaking Factor
100
3.62
200
3.14
300
2.90
400
2.74
500
2.64
600
2.56
700
2.50
800
2.46
900
2.42
1,000
2.38
1,001 - 10,000
(6.33 x p – 0.231) + 1.094
10,001 - 100,000
(6.177 x p – 0.233) + 1.128
> 100,000
(4.5 x p – 0.174) + 0.945
The WWTFs were evaluated against the projected ADMM wastewater flows. The ADMM flows are
assumed to be 17 percent more than average daily flows.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-8
5.4
Hydraulic Model
The City previously had a wastewater collection system model of the Central Buckeye area in the
InfoSewer modeling software by Innovyze. This model was expanded to include the Tartesso and Sun City
Festival area by taking the City's GIS data, facilities information, and land use to create the ability to model
those areas. The City prefers the SewerCAD modeling software by Bentley, so the models were converted
to SewerCAD for use in the IWMP. The models were used to size future gravity sewer mains and evaluate
pipe capacity under peak-hour flows.
5.5
Master Plan by Wastewater Service Area
The Buckeye wastewater collection system has five separate WRF basins within their four service areas. In
this section, a separate plan is provided for each service area.
5.5.1
Sun City Festival
5.5.1.1
2024 Wastewater Infrastructure Description
Wastewater Treatment Facilities
The Festival Ranch WRF is located along 287th Avenue and south of Sun Valley Parkway. This WRF serves
the Sun City Festival community, as shown in Figure 5.2. Wastewater is conveyed to this facility through a
30-inch gravity sewer main that enters the plant from the north. The plant is designed and permitted for
1 mgd with two planned 0.5 mgd expansions. The 2023 flows to the Festival Ranch WRF are 0.51 mgd
average annual daily flow (AADF).
N 291st Ave
N
29
6
t
h
A
v
e
Sun Valley Pkw
y
W
Yukon D
r
Deser
t O
as
is B
lvd
W
Covey Ln
N 291st Ave
Sun Valley Pkwy
W Pi
N 25
N 251st Ave
N De
s
ert Vista Blvd
N Desert Vista Blvd
W
Morro
w D
r
W Vis
ta North
Dr
W M
cRae
D
r
N 2
6
0
th
Ln
W
C
ovey L
n
Sun Valley Pkw
Sun Valley Pkwy
Copper Canyon
Golf Course
WR F
Festival WRF
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O
0
0.35
0.17
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5.2 Sun City Festival 2024 Wastewater Infrastructure
CITY OF BUCKEYE
Legend
WR F
WRF
Gravity Sewer Main (inches)
≤8
10 - 15
16 - 24
30
WRF Service Area
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-10
Gravity Collection System
The Sun City Festival gravity collection system is comprised of 58 miles of gravity sewer mains ranging
from 6 to 30 inches in diameter, and approximately 1,525 manholes. Table 5.4 presents a summary of the
gravity sewer mains by diameter for the Sun City Festival collection system. As shown in Table 5.4, roughly
90 percent of Sun City Festival's gravity sewer mains are 8 and 15 inches in diameter. Table 5.5
summarizes the gravity sewer mains by material.
Table 5.4
Sun City Festival Wastewater Collection System Gravity Sewer Main Summary
Gravity Sewer Main Diameter (inches)
Length (miles)
Percent of Collection System
≤6
0.2
0.3%
8
46.7
80.0%
10
1.0
1.7%
12
1.8
3.1%
15
5.7
9.8%
16
0.1
0.1%
18
0.0
0.0%
20
0.3
0.4%
24
1.2
2.0%
30
1.2
2.1%
Total
58.2
Table 5.5
Sun City Festival Sewer Pipe Materials
Pipe Material
Length (miles)
Percent of Collection System
Ductile Iron
0.1
0.1%
Vitrified Clay
26.0
44.5%
PVC
32.4
55.4%
Total
58.5
5.5.1.2
Future Infrastructure
This section outlines planned facilities to serve future development areas in Sun City Festival through
2040. The Festival Ranch Phase 2 development is directly west of the existing Festival Ranch community
and will connect to the existing system via a gravity sewer main along Sun Valley Parkway. The phasing of
the future developments is shown in Figure 5.3 The future 8-inch gravity sewer mains will be defined once
the pipe data is in the GIS.
N 291st Ave
N
29
6
t
h
A
v
e
Sun Valley Pkw
y
W
Yukon D
r
Deser
t O
as
is B
lvd
W
Covey Ln
N 291st Ave
Sun Valley Pkwy
N 251st A
N 251st Ave
N De
s
ert Vista Blvd
N Desert Vista Blvd
W
Morro
w D
r
W Vis
ta North
Dr
W M
cRae
D
r
N 2
6
0
th
Ln
W
C
ovey L
n
Sun Valley Pkwy
Sun Valley Pkwy
Copper Canyon
Golf Course
WR F
North Star
Ranch
Festival
Ranch
Sun Valley
Villages
I and II
Festival WRF
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O
0
0.3
0.15
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5.3 Sun City Festival Development Areas
CITY OF BUCKEYE
Legend
WR F
WRF
Gravity Sewer Main (inches)
≤8
10 - 15
16 - 24
30
Projected Development
Phase
Existing
2030
2035
2040
Master Planned
Community
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-12
5.5.1.3
Wastewater System Capacity Evaluation
A capacity analysis of the existing and future collection systems was performed to identify gravity sewer
mains with insufficient capacity, if any. Sewer mains that lack sufficient capacity to convey peak flows can
potentially cause sanitary sewer overflows (SSOs). The collection system was evaluated based on the
performance criteria listed in Section 5.1.
2024 Pipeline Capacity Evaluation
The 2024 wastewater collection system was evaluated using design flows based on the land use type and
percentage developed, multiplied by the PF. The model predicted that the pipes in Sun City Festival have
sufficient capacity to convey peak dry weather flows except for an 8-inch gravity sewer main along West
Sierra Pinta Drive and North 267th Avenue, as shown in Figure 5.4. This predicted capacity limitation could
be a discrepancy in the GIS data and a data anomaly should be investigated first before the pipeline is
upsized.
If a collection system capacity evaluation predicts that a pipe is out of capacity, the City should conduct
flow monitoring where the pipe capacity is predicted to be limited. Flow monitoring is a relatively
inexpensive way to validate model results before investing in a pipe replacement project.
Future Pipeline Capacity Evaluation
A capacity analysis of the planned future collection system for each planning period (2030, 2035, and
2040) was performed by applying the planned future wastewater flows in the model to the existing and
planned future pipes anticipated in each future planning period. The purpose of this evaluation is to verify
pipes are adequately sized to convey future flows.
The model predicts one gravity sewer main section that surcharges during the 2030 planning period. This
gravity sewer main starts at Sun Valley Parkway and 265th Avenue and ends at Mountain Ridge Boulevard
and Wahalla Lane. The 8-inch pipeline surcharges under 2030 peak dry weather flow. This pipe should be
upsized to a 15-inch diameter pipe. The existing infrastructure deficiencies are shown in Figure 5.4.
A model simulation of the recommended infrastructure under 2040 flow conditions is shown in
Appendix 5A. Figure 5A.1 shows the d/D for each of the gravity sewer main to demonstrate that the pipe
capacity is adequate.
N 291st Ave
N
29
6
t
h
A
v
e
Sun Valley Pkw
y
W
Yukon D
r
Deser
t O
as
is B
lvd
W
Covey Ln
N 291st Ave
Sun Valley Pkwy
N 25
N 251st Ave
N De
s
ert Vista Blvd
N Desert Vista Blvd
W
Morro
w D
r
W Vis
ta North
Dr
W M
cRae
D
r
N 2
6
0
th
Ln
W
C
ovey L
n
Sun Valley Pkw
Sun Valley Pkwy
Copper Canyon
Golf Course
WR F
Festival WRF
8"
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O
0
0.3
0.15
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5.4 Sun City Festival Existing Pipeline Deficiencies
CITY OF BUCKEYE
Legend
WR F
WRF
Existing Gravity Sewer
Main
Gravity Sewer Main
Capacity Deficiency
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-14
Wastewater Treatment Capacity Evaluation
The Festival Ranch WRF was evaluated with the projected wastewater flows to determine the need and
timing for future WWTP expansions. The WRF capacity was evaluated against the ADMM flow rate.
Table 5.6 shows the projected ADMM flows for the Sun City Festival WRF.
Table 5.6
Sun City Festival WRF ADMM Flow Projections
WRF Basin
Average Daily Flow of the Maximum Month (mgd)
2024
2030
2035
2040
Buildout
Festival Ranch
0.6
1.4
1.5
1.6
2.3
The current capacity of the WRF is 1 mgd. As shown in Figure 5.5, the projected ADMM flow reaches the
80 percent trigger for an expansion in 2025, so an expansion to 2 mgd is recommended by 2028.
The capacity of Sun City Festival WRF assumes the facility utilizes existing technologies for treatment.
However, the City has plans to upgrade treatment to membrane bioreactor (MBR) technology. If the
treatment process is changed to MBR, then the plant may be expanded to 4 or 5 mgd.
Figure 5.5
Sun City Festival Wastewater Treatment Capacity Evaluation through 2040
5.5.1.4
Infrastructure Projects
Based on the collection system evaluation and improvement projects identified in Section 5.5.1.3, the
following infrastructure projects are recommended as shown in Figure 5.6 and described in Table 5.7.
The Trigger column in Table 5.7 identified when a project needs to be in service. Projects to address
known deficiencies are assigned the 2030 planning year so that the projects are completed in the next
5 years. Other projects need to be constructed in time to make sure that the performance criteria can be
met. Project timing is crucial. For instance, WRF expansion is triggered when flow reaches 80 percent of
capacity. Similarly, infrastructure projects serving new developments must coincide with construction
timelines. For these, the development's anticipated planning year acts as the trigger. The City maintains
flexibility to adjust project start dates based on evolving conditions, ensuring timely completion.
0.0
0.5
1.0
1.5
2.0
2.5
2020
2022
2024
2026
2028
2030
2032
2034
2036
2038
2040
Flow
(mgd)
Date
Average Day
Max Month
80% Capacity
Capacity
N 291st Ave
N
29
6
t
h
A
v
e
Sun Valley Pkw
y
W
Yukon D
r
Deser
t O
as
is B
lvd
W
Covey Ln
N 291st Ave
Sun Valley Pkwy
N 251st A
N 251st Ave
N De
s
ert Vista Blvd
N Desert Vista Blvd
W
Morro
w D
r
W Vis
ta North
Dr
W M
cRae
D
r
N 2
6
0
th
Ln
W
C
ovey L
n
Sun Valley Pkwy
Sun Valley Pkwy
Copper Canyon
Golf Course
WR F
WR F
WW6
WW5
WW4
WW3
Festival WRF
WW2
WW1
O
0
0.3
0.15
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5.6 Sun City Festival Recommended Infrastructure Improvements through 2040
CITY OF BUCKEYE
Legend
WR F
WRF
WR F
WRF Improvement
Gravity Sewer Main (inches)
≤8
10 - 15
16 - 24
30
Gravity Sewer Main
Improvement
Proposed Gravity Sewer
Main (inches)
15
Projected Development
Phase
Existing
2030
2035
2040
Master Planned
Community
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-16
Table 5.7
Sun City Festival Wastewater Infrastructure Projects
Project No.
Description
Justification
Diameter/Size
(inch/mgd)
Length/Qty
(feet or no.)
Planning Triggers
(Year)
WW1
Increase gravity sewer main capacity from the
intersection of Sun Valley Parkway and
265th Avenue to the intersection of Mountain
Ridge Boulevard and Wahalla Lane.
Prevent surcharging under
2030 peak flow.
15
7,900
Pipeline Capacity Above 82%.
(2030)
WW2
Expand capacity of Festival Ranch WRF from
1 mgd to 2 mgd and convert to MBR.
The average daily flow of the
maximum month reaches 80%
of the plant capacity.
1
1
Wastewater flow reaches 80%
of capacity.
(2030)
WW3
Construct a 15-inch gravity sewer main in Sun
City Festival Development Phase 2 major street.
Convey flow from future
developments.
15
3,300
Development in the area.
(2030)
WW4
Construct a 15-inch gravity sewer main in Sun
City Festival Development Phase 2 major street.
Convey flow from future
developments.
15
7,200
Development in the area.
(2030)
WW5
Construct a 15-inch gravity sewer main in Sun
City Festival Development Phase 2 major street.
Convey flow from future
developments.
15
7,600
Development in the area.
(2035)
WW6
Construct a 15-inch gravity sewer main in Sun
City Festival Development Phase 2 major street.
Convey flow from future
developments.
15
8,000
Development in the area.
(2040)
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-17
5.5.2
Floreo at Teravalis
5.5.2.1
Planned Future Infrastructure
This section outlines planned facilities to serve the Floreo development through 2040. The phasing of the
future Floreo development areas is shown in Figure 5.7.
The Floreo WRF is being constructed now and will serve development once homes are constructed. Floreo
is a 3,040-acre planned mixed-use development located west of Sun Valley Parkway along Cactus Road.
The Teravalis development is a 35,770-acre planned mixed-use development located west of the
Hassayampa River Wash and is not expected to start developing before 2040 and will be served by its
own WRF.
The Sun Valley Villages development is an 11,910-acre planned mixed-use development along Sun Valley
Parkway, south of Festival Ranch WRF. The development will send wastewater flows to the Floreo WRF, so
the Sun Valley Villages major gravity sewer mains are included in the plan and the Floreo gravity sewer
mains are sized to convey this flow. The wastewater from the Sun Valley Villages development is planned
to flow along a parallel 36-inch gravity main to the Floreo WRF to avoid flow from going through the
sewer mains sized for the Floreo development. Sewer trunk main sizing running north through Floreo
would need to be upsized if some of this middle area sewers to Floreo. Additional land for the Floreo WRF
and a 208 Plan amendment would be required to take wastewater from Sun Valley villages.
W
C
act
u
s
Rd
W
C
a
c
t
u
s
Rd
N
3
0
4
t
h
L
n
W
Indig
o
Way
S
W Teravalis Pkwy
Sun Valley Pkwy
un Valley Pkwy
Floreo at
Teravalis
Teravalis
Sun Valley Villages
I and II
Last Revised: October 31, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch03\
O
0
0.25
0.13
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5.7 Floreo Development Areas
CITY OF BUCKEYE
Legend
Projected Development Phase
2030
2040
Post 2040
Master Planned
Community
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-19
Gravity Collection System
The Floreo Phase 1 collection system is comprised of approximately 6 miles of gravity sewer mains
ranging from 12 to 24 inches in diameter in addition to the 8-inch pipes that are not modeled.
Wastewater Treatment Facilities
The planned Floreo WRF will be in a wastewater campus off Cactus Road and Sun Valley Parkway on the
east side of the Hassayampa wash. Development has already begun in Floreo Phase 1, so once flows
exceed the limit for vault and haul, a 0.3 mgd package plant will be constructed before transitioning to a
1.2 mgd WRF in 2035. The Floreo WRF ultimate capacity is only expected to be 3 mgd when only the
developments served by the WRF are those with a CAWS. The WRF ultimate capacity goes up to 11 mgd
with the addition of Sun Valley Villages. Flows will be delivered to the WRF by gravity.
5.5.2.2
Wastewater System Capacity Evaluation
A capacity analysis of the future collection system was performed to determine if the proposed future
gravity sewer mains or treatment facilities have sufficient capacity. Gravity sewer mains lacking sufficient
capacity to convey peak flows can potentially cause SSOs. The collection system was evaluated based on
the planning criteria listed in Section 5.1.
5.5.2.3
Future Pipeline Capacity Evaluation
A capacity analysis of the planned future collection system with 2040 flows was performed to evaluate the
collection system capacity. Appendix 5A, Figure 5.2 presents the d/D ratio model results for the buildout
planning period. The actual pipe layout to Sun Valley Villages may differ.
Wastewater Treatment Capacity Evaluation
The Floreo treatment facility was evaluated against the projected wastewater flows to determine the need
and timing for future WWTP expansions. The City's WRF capacity is provided in terms of ADMM flows.
Table 5.8 shows the projected wastewater ADMM flows for both Teravalis developments to illustrate the
capacity of the WRF relative to the ultimate capacity.
Table 5.8
Floreo WRF ADMM Flow Projections
WRF Basin
Average Daily Flow of the Maximum Month (mgd)
2024
2030
2035
2040
Buildout
Floreo
0
0.2
0.4
0.7
11.0
Teravalis
0
0
0
0
28.9
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-20
As shown in Figure 5.8, the projected ADMM flow surpasses the 80 percent trigger for expansion in 2030,
so an expansion to 1.2 mgd is recommended before 2031. Actual development times may vary.
Figure 5.8
Floreo Wastewater Treatment Capacity Evaluation through 2040
5.5.2.4
Infrastructure Projects
Based on the collection system evaluation and improvement projects, infrastructure projects have been
identified to serve additional growth are shown in Figure 5.9 and described in Table 5.9.
The Trigger column in Table 5.9 identified when a project needs to be in service. Projects to address
known deficiencies are assigned the 2030 planning year so that the projects are completed in the next
5 years. Other projects need to be constructed in time to make sure that the performance criteria can be
met. Project timing is crucial. For instance, WRF expansion is triggered when flow reaches 80 percent of
capacity. Similarly, infrastructure projects serving new developments must coincide with construction
timelines. For these, the development's anticipated planning year acts as the trigger. The City maintains
flexibility to adjust project start dates based on evolving conditions, ensuring timely completion.
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
2020
2022
2024
2026
2028
2030
2032
2034
2036
2038
2040
Flow
(mgd)
Date
Average Day
Max Month
80% Capacity
Capacity
Ca
p Cana
l
Sun Valley P
W
H
as
sayam
p
a
Rd
Cap
Ca
n
a
l
S
u
n
V
a
ll
e
y
P
k
w
y
W
C
a
ct
u
s
R
d
W C
a
c
t
u
s R
d
N
3
0
4
t
h
L
n
W
I
n
dig
o
W
ay
S
W Teravalis Pkwy
Sun Valley Pkwy
un Valley Pkw
y
W Bell Rd
W
Mc
Rae
Dr
W Bell Rd
WR F
Floreo at
Teravalis
Festival Ranch
Teravalis
Sun Valley
Villages
I and II
WW9
WW8
WW11
WW7
WW10
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O
0
0.5
0.25
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5.9 Floreo Recommended Infrastructure Improvements through 2040
CITY OF BUCKEYE
Legend
WR F
Proposed WRF
Proposed Gravity Sewer Main
(inches)
15
18
24
30
36
Projected Development Phase
2030
2040
Post 2040
Master Planned
Community
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-22
Table 5.9
Floreo Wastewater Infrastructure Projects
Project No.
Description
Justification
Diameter/Size
(inch/ mgd)
Length/Qty
(feet or no.)
Planning Triggers (Year)
WW7
Construct a 24-inch gravity sewer main from the
proposed Floreo WRF location to the Floreo
development along Cactus Road.
Convey flow from future
developments to collection
system.
24
4,800
Development in the area.
(2030)
WW8
Construct a 12-inch gravity sewer main along Indigo
Way Street from Larkspur Drive to Floreo Cir Street.
Convey flow from future
developments to collection
system.
12
3,700
Development in the area.
(2030)
WW9
Construct an 18-inch gravity sewer main along Cactus
Road from Johnson Road going west for 350 feet.
Convey flow from future
developments to collection
system.
18
400
Development in the area.
(2030)
WW10
Construct a 15-inch gravity sewer main along Johnson
Road from Catus Road to Larkspur Drive and along
Larkspur Drive to 304th Lane.
Convey flow from future
developments to collection
system.
15
2,500
Development in the area.
(2030)
WW11
Construct a 15-inch gravity sewer main along 304th
Lane from Larkspur Drive to Waddell Road and along
Waddell Road to Sun Valley Parkway.
Convey flow from future
developments to collection
system.
15
6,900
Development in the area.
(2030)
WW12
Construct a 0.3 mgd Floreo wastewater package plant. Treat flows from future
developments.
0.3
1
Development in the area.
(2030)
WW13
Construct a 1.2 mgd Floreo WRF.
Treat flows from future
developments.
1.2
1
80% of the package plant
is utilized.
(2030)
WW14
Construct a 15-inch gravity sewer main along Johnson
Road from Greenway Road to Cactus Road.
Convey flow from future
developments to collection
system.
15
9,600
Development in the area.
(2040)
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-23
5.5.3
Tartesso
5.5.3.1
2024 Wastewater Infrastructure Description
Wastewater Treatment Facilities
The Tartesso WRF is located southwest of Tartesso along West McDowell Road, approximately 1 mile
south of the Tonopah Salome Highway. This WRF serves the Tartesso Service Area, as shown in
Figure 5.10. Wastewater is conveyed to this facility through a 60-inch interceptor that enters the plant
from the north. The Tartesso WRF is intended to serve the entire Tartesso region of the City. For this
reason, the main interceptor pipes are sized for significantly more flow than the current development. The
WRF is currently permitted for 1.2 mgd. The 2023 flows to the Tartesso WRF are 0.63 mgd AADF.
School
Rd
W Indian School Rd
W Tonopah Salome Hwy
Earll Dr
N 311th Ave
315th Ave
N 313th A
v
e
W Osborn Rd
Thomas
Rd
N Johnson Rd
Ave
W T
a
rt
ess
o
P
kw
y
N B
roo
kly
n
Dr
N
Br
ooklyn
D
r
W Tonopah Salome Hwy
W Thomas Rd
W Thomas Rd
Bruner Rd Bruner R
d
N 3
03rd
A
ve
Ta
rt
e
ss
o
Pk
w
y
T
arte
sso Pkwy
N Bruner Rd
Sun Valley
Pkwy
W Tonopah Salome Hwy
ve
W Bellview St
W
McDowell
Rd
W McDowell Rd
308th Ave
W Latham St
W Portland St
N 299th Ave
Rd
rd Ave
W
WR F
Tartesso WRF
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O
0
0.25
0.13
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5.10 Tartesso 2024 Wastewater Infrastructure
CITY OF BUCKEYE
Legend
WR F
WRF
Gravity Sewer Main (inches)
≤ 8
10 - 12
18
30
36
48
60
WRF Service Area
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-25
Gravity Collection System
The City's wastewater collection system in Tartesso is comprised of 35 miles of gravity sewer mains
ranging from 6 to 60 inches in diameter, with approximately 730 manholes. Table 5.10 presents a
summary of the gravity sewer mains by diameter. As shown in Table 5.10, roughly 73 percent of Tartesso's
gravity sewer mains are 8-inch diameter.
Table 5.10
Tartesso Wastewater Collection System Gravity Sewer Main Summary
Diameter (inches)
Length (miles)
Percent of Collection System
6
0.1
0.3%
8
25.2
72.8%
10
1.4
4.1%
12
1.1
3.1%
18
2.4
6.9%
30
2.6
7.6%
36
0.0
0.1%
48
0.2
0.5%
60
1.6
4.6%
Total
34.6
5.5.3.2
Future Infrastructure
This section outlines planned facilities to serve future growth areas for development in Tartesso through
2040. The phasing of the future developments is shown in Figure 5.11.
Tartesso West and Elianto are developments that are expected to begin by 2040. The Tartesso West
development is a 3,160-acre planned residential development located directly north of the existing
Tartesso development. It will connect to the existing system via a gravity sewer main along North
311th Avenue. The Elianto development is a 3,900-acre planned mixed-use development located east of
the existing Tartesso development along Sun Valley Parkway.
Sun Valley South is an additional development with a CAWS planned to connect to the Tartesso collection
system, but it is not expected to develop in the next 15 years. A 208 Amendment has been submitted to
the City to incorporate the Sun Valley South area into the Tartesso WRF service area. The development is
north of Elianto and is planned to be primarily a residential community.
Sun Val
ley Pkwy
Sun Valley Pkwy
Skyline
Regional Park
Tartesso
Elianto
Sun Valley
South
WR F
Tartesso
Tartesso West
Elianto
Montiere
Sun Valley
South
Desert Creek
Valle Del Sol
Valle
Del Rio
Tartesso WRF
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O
0
0.65
0.33
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5.11 Tartesso Development Areas
CITY OF BUCKEYE
Legend
WR F
WRF
Gravity Sewer Main (inches)
≤ 8
10 - 12
18
30
36
48
60
Development Phasing
2030
2035
2040
Existing
Post 2040
Master Planned
Community
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-27
5.5.3.3
Wastewater System Capacity Evaluation
A capacity analysis of the existing and future collection systems was performed to determine if the
collection system has sufficient capacity. Sewer mains that lack sufficient capacity to convey peak flows
can potentially cause SSOs. The collection system was evaluated based on the planning criteria listed in
Section 5.1.
2024 Pipeline Capacity Evaluation
In collection system capacity evaluations, if the model predicts a pipe that is out of capacity, then flow
monitoring where the pipe capacity is predicted to be limited is recommended. Flow monitoring is a
relatively inexpensive way to validate model results before investing in pipe replacement.
The 2024 wastewater collection system was evaluated using design flows based on the land use type and
percentage developed, multiplied by the PF. The model predicted that the existing pipes in Tartesso have
sufficient capacity to convey peak dry weather flows.
Future Pipeline Capacity Evaluation
A capacity analysis of the planned future collection system (2030, 2035, and 2040) was performed by
applying the planned future wastewater flows in the model with the existing and planned future pipes in
each planning period. The purpose of this evaluation is to verify that pipes are adequately sized. The
model predicted that the existing pipes in Tartesso have sufficient capacity to convey peak dry weather
flows for the future planning years. A simulation of the future infrastructure with 2040 flows is shown in
Appendix 5A.3. Future pipelines were placed in the mile streets to represent growth in future areas. The
actual pipe layout may differ as developments are planned in greater detail.
Wastewater Treatment Capacity Evaluation
The Tartesso WRF was evaluated against the projected wastewater flows to determine the need and
timing for future WWTP expansions. The City's WRF capacity is evaluated based on ADMM flows.
Table 5.11 shows the current ADMM flow for the Tartesso WRF relative to the projected buildout flow.
Table 5.11
Tartesso WRF ADMM Flow Projections
WRF Basin
Average Daily Flow of the Maximum Month (mgd)
2024
2030
2035
2040
Buildout
Tartesso
0.7
1.0
1.3
1.6
23.6
The capacity of Tartesso WRF assumes the facility utilizes existing technologies for treatment. However,
the City has plans to upgrade treatment to MBR which would raise the total available capacity of the
treatment plant for the same footprint and potentially delay expansion triggers.
The current capacity of the treatment facility is 1.2 mgd. As shown in Figure 5.12, the projected ADMM
flow surpasses the 80 percent trigger expansion in 2031, so an expansion to 2.5 mgd is recommended
before 2033.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-28
Figure 5.12 Tartesso Wastewater Treatment Capacity Evaluation through 2040
5.5.3.4
Infrastructure Projects
Based on the collection system evaluation and improvement projects identified in Section 5.5.2.3, the
following infrastructure projects have been identified and are shown in Figure 5.13 and described in
Table 5.12.
The trigger column in Table 5.12 identified when a project needs to be in service. Projects to address
known deficiencies are assigned the 2030 planning year so that the projects are completed in the next
5 years. Other projects need to be constructed in time to make sure that the performance criteria can be
met. Project timing is crucial. For instance, WRF expansion is triggered when flow reaches 80 percent of
capacity. Similarly, infrastructure projects serving new developments must coincide with construction
timelines. For these, the development's anticipated planning year acts as the trigger. The City maintains
flexibility to adjust project start dates based on evolving conditions, ensuring timely completion.
0.0
0.5
1.0
1.5
2.0
2.5
3.0
2020
2022
2024
2026
2028
2030
2032
2034
2036
2038
2040
Flow
(mgd)
Date
Average Day
Max Month
80% Capacity
Capacity
N 3
N
3
1
5
t
h A
v
e
W
I
ndi
an S
c
hool
Rd
W Indian School Rd
W Tonopah Salome Hwy
Earll Dr
N 311th Ave
315th Ave
W Osborn Rd
Thomas
Rd
N Johnson Rd
W Camelback Rd
B
eth
any Hom
e
R
d
Bethany Home Rd
Sun Valley Pkwy
W Ta
rt
e
ss
o
P
kwy
N
Br
oo
kl
yn
Dr
N
Br
o
okly
n
Dr
W Tonopah Salome Hwy
W Thomas Rd
W Thomas Rd
Bruner Rd
N
30
3rd
A
ve
Tart
e
s
s
o
P
kwy
T
a
r
tes
so Pkwy
N Bruner Rd
Sun Valle
y Pkwy
W Tonopah Salome Hw
y
W M
cDowe
ll Rd
W McDowell Rd
T
u
rner R
d
W Indian School Rd
N 277th Ave
Power Line Rd
W McDowell Rd
W McDowell Rd
WR F
WR F
Tartesso WRF
WW23
WW22
WW17
WW18
WW25
WW20
WW21
WW24
WW16
WW19
WW15
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O
0
0.5
0.25
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5.13 Tartesso Recommended Infrastructure Improvements through 2040
CITY OF BUCKEYE
Legend
WR F
WRF
WR F
WRF Improvement
Gravity Sewer Main (inches)
≤ 8
10 - 12
18
30
36
48
60
Proposed Gravity Sewer Main
(inches)
15
18
21
24
30
36
Development Phasing
2030
2035
2040
Existing
Post 2040
Master Planned
Community
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-30
Table 5.12
Tartesso Wastewater Infrastructure Projects
Project No. Description
Justification
Diameter/Size
(inch/ mgd)
Length/Qty
(feet or no.)
Planning Triggers
(Year)
WW15
Construct a 36-inch gravity sewer main along Thomas
Road from Bruner Road to Sun Valley Parkway and along
Sun Valley Parkway from Thomas Road to Camelback
Road.
Convey flow from future developments
to collection system.
36
15,700
Development in the area.
(2030)
WW16
Construct a 15-inch gravity sewer main along Indian
School Road from Sun Valley Parkway to Wilson Avenue.
Convey flow from future developments
to collection system.
15
3,900
Development in the area.
(2030)
WW17
Construct a 15-inch gravity sewer main along Indian
School Road from Wilson Avenue to 280th Avenue.
Convey flow from future developments
to collection system.
15
2,100
Development in the area.
(2030)
WW18
Construct a 24-inch gravity sewer main along Camelback
Road from Sun Valley Parkway to Wilson Avenue.
Convey flow from future developments
to collection system.
24
2,900
Development in the area.
(2030)
WW19
Construct a 15-inch gravity sewer main along Camelback
Road from Wilson Avenue to Turner Road.
Convey flow from future developments
to collection system.
15
5,900
Development in the area.
(2035)
WW20
Construct a 30-inch gravity sewer main along 311th
Avenue from Indian School Road to Camelback Road.
Convey flow from future developments
to collection system.
30
5,200
Development in the area.
(2035)
WW21
Construct a 24-inch gravity sewer main along Camelback
Road from 311th Avenue to 305th Avenue.
Convey flow from future developments
to collection system.
24
3,300
Development in the area.
(2035)
WW22
Construct a 15-inch gravity sewer main along Camelback
Road from 305th Avenue to Bruner Road.
Convey flow from future developments
to collection system.
15
2,100
Development in the area.
(2035)
WW23
Expand Tartesso WRF from 1.2 mgd to 2.5 mgd total
capacity.
Treat flow from future developments.
1.25
1
Wastewater flow reaches
80% of capacity.
(2032)
WW24
Construct a 15-inch gravity sewer main along Earll Drive
from 280th Avenue to Sun Valley Parkway.
Convey flow from future developments
to collection system.
15
4,400
Development in the area.
(2040)
WW25
Construct a 15-inch gravity sewer main along Indian
School Road from 280th Avenue to Turner Road.
Convey flow from future developments
to collection system.
15
4,400
Development in the area.
(2040)
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-31
5.5.4
Central Buckeye
5.5.4.1
2024 Wastewater Infrastructure Description
Wastewater Treatment Facilities
Central Buckeye has two WRFs, the Central WRF and the Sundance WRF. Figure 5.14 presents the four
planned basins in Central Buckeye that are part of the collection system plan. Figure 5.14 presents the
locations of the Central and Sundance WRFs and their respective existing wastewater service areas.
The Central WRF is located on 7th Street, south of Beloat Road. Wastewater is conveyed to this facility
through a 66-inch interceptor that enters the plant from the north. The plant is permitted for 4.5 mgd. The
2023 flows to the Central WRF are 2.60 mgd AADF.
Sundance WRF is located north of RID Canal and east of Dean Road. Wastewater is conveyed to this
facility through a 30-inch gravity sewer main, a 16-inch force main from the east, and an 8-inch gravity
sewer main from the north. The plant is designed and permitted for 3.5 mgd. The 2023 flows to the
Sundance WRF are 2.11 mgd AADF.
Gravity Collection System
The City's Central Buckeye wastewater collection system is comprised of 263 miles of gravity sewer mains
ranging from 4 to 66 inches in diameter, with approximately 6,011 manholes. Table 5.13 presents a
summary of the gravity sewer mains by diameter. As shown in Table 5.13, roughly 92 percent of Central
Buckeye's gravity sewer mains are 15 inches or less in diameter. Figure 5.15 presents the 2024 wastewater
collection system, including gravity sewer mains, lift stations, and WRFs.
Table 5.13
Central Buckeye Gravity Sewer Main Summary
Diameter (inches)
Length (miles)
Percent of Collection System
≤6
11.0
4.2%
8
189.4
72.1%
10
15.2
5.8%
12
14.1
5.4%
15
12.1
4.6%
16
0.4
0.2%
18
8.4
3.2%
21
2.2
0.8%
24
5.2
2.0%
27
0.6
0.2%
30
2.2
0.8%
36
0.9
0.3%
42
0.1
0.1%
60
0.5
0.2%
66
0.3
0.1%
Unknown
0.3
0.1%
Total
262.9
10
Hassayampa
River
Dixie
Hassayampa
Arlington
Palo Verde
10
Sundance Golf
Club
Raven Golf Club
at Verrado
Skyline
Regional Park
Gila River
85
10
Robbins Butte
Wildlife Area
Valencia
Allenville
Conger
Buckeye
10
10
10
McMicken
Gila River
P
Liberty
WR F
WR F
WR F
WR F
Beloat Rd
Baseline Rd
Southern Ave
Broadway Rd
Lower
Buckeye Rd
Yuma Rd
Van Buren St
McDowell Rd
Thomas Rd
Indian
School Rd
Camelback Rd
Bethany
Home Rd
195th Ave
Airport Rd
Dean Rd
Rainbow Rd
Watson Rd
Apache Rd
Miller Rd
Rooks Rd
Oglesby Rd
Turner Rd
Wilson Ave
Palo
Verde Rd
Bruner Rd
Johnson Rd
Perryville Rd
Central WRF
Sundance WRF
4
3
2
1
WRF 3
WRF 4/ Grand
View WRF
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O
0
1.5
0.75
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5.14 Central Buckeye Planned Wastewater Collection Basins
CITY OF BUCKEYE
Legend
Collection Basins
1
2
3
4
WR F
WRF
WR F
Proposed WRF
10
10
Hassayampa
River
Dixie
Hassayampa
Arlington
Palo Verde
10
Sundance Golf
Club
Raven Golf Club
at Verrado
Skyline
Regional Park
Gila River
85
10
Robbins Butte
Wildlife Area
Valencia
Allenville
Conger
Buckeye
10
10
McMicken
Gila River
Liberty
WR F
"
=)
"
=)
"
=)
WR F
Beloat Rd
Baseline Rd
Southern Ave
Broadway Rd
Lower
Buckeye Rd
Yuma Rd
Van Buren St
McDowell Rd
Thomas Rd
Indian
School Rd
Camelback Rd
Bethany Home Rd
195th Ave
Airport Rd
Dean Rd
Rainbow Rd
Watson Rd
Apache Rd
Miller Rd
Rooks Rd
Oglesby Rd
Turner Rd
Wilson Ave
Palo Verde Rd
Bruner Rd
Johnson Rd
Perryville Rd
Central WRF
Industrial
Park Lift
Station
Blue Horizon
Lift Station
Shadow Canyon
Lift Station
Sundance WRF
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O
0
1.5
0.75
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5.15 Central Buckeye 2024 Wastewater Infrastructure
CITY OF BUCKEYE
Legend
"
=)
Lift Station
Force Main
WR F
WRF
Gravity Sewer Main (inches)
≤8
10 - 12
15 - 18
21 - 36
42 - 66
Central WRF Basin
Sundance WRF Basin
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-34
5.5.4.2
Lift Stations
Most of the City's collection system flows directly to a WRF by gravity. However, lift stations are required
at several locations. The City currently operates and maintains four wastewater lift stations and 7.9 miles
of force main with diameters of 4 inches up to 16 inches, as shown in Figure 5.15. Table 5.14 summarizes
lift station location, number of pumps, pump capacity, and force main diameter.
Table 5.14
Central Buckeye Lift Station Facilities
Lift Station Name
Location
Number of
Pumps
Pump
Capacity
(gpm)
Lift Station Firm
Capacity
(gpm)
Force Main
Diameter
(inch)
Buckeye Industrial
Park
South Turner Road and Buckeye
Canal Road.
2
517
517
8
Shadow Canyon
West Jefferson Street and
238th Lane.
2
30
30
4
Blue Horizon
West Yuma Road and 200th Lane. 2
4,252
4,252
16
Broadway Lift Station 25270 West Broadway Road
2
140
140
6
5.5.4.3
Future Infrastructure
This section outlines planned facilities to serve future growth areas for the development of Central
Buckeye through 2040. Plans for Central Buckeye are split between the west and east of SR 85. Land East
of SR 85 currently has two collection system basins that will be evaluated as Option 1 East and a possible
third basin that will be evaluated as Option 2 East. West of SR 85 contains Basin 3 and a small portion of
Basin 1 along Turner Road and Baseline Road and along Turner Road and the RID Canal. The Cipriani
development will have a package WWTP serving the area in the near term.
5.5.4.4
Infrastructure East of Maricopa County (MC) SR 85
Sundance
The Sundance collection basin will ultimately be developed and will send wastewater flows to the
Sundance WRF. The collection basin has developments that are served by septic tanks, and these
developments are not planned to be converted to public sewer service.
The City plans to accept a wastewater flow of approximately 0.7 mgd on a permanent basis from EPCOR
that would be delivered to the Sundance WRF because the EPCOR WRF site does not have space for an
additional expansion. Buckeye would obtain ownership of the reclaimed water that is produced from the
EPCOR wastewater.
The Sundance WRF is planned to require a treatment capacity of 4 mgd by 2040 and 9 mgd by buildout.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-35
Central
The Central WRF is planned to serve land that is mostly east of SR 85.
The areas projected to develop on the east side of Central Buckeye are primarily industrial developments
starting on Dean Road and going east along Baseline Road. These developments are separated from the
existing collection system of Central Buckeye in Basin 4. Because of this separation, the flow from the
developments in Basin 4 would either need to be pumped to the existing collection system or establish a
new independent collection system with a new WRF.
Two options for the Central WRF on the east side of Central Buckeye have been analyzed in this IWMP.
Option 1 East is to expand the Central WRF to serve land areas east of SR 85 that are not in the Sundance
basin. A lift station along Dean Road and Union Pacific Railroad would be constructed in the 2035
planning period to serve the developments north of Union Pacific Railroad in Basin 4 and to pump flow
across the railroad tracks. An additional lift station at the intersection of Dean Road and Baseline Road
would be constructed in the 2035 planning period to pump wastewater flow from the new developments
on the east side of SR 85 to the gravity sewer main on Apache Road and Monroe Avenue, which will then
convey wastewater to the Central WRF. Future infrastructure for Option 1 East is presented in Figure 5.16.
Option 2 East is to have future Grand View WRF (previously called WRF 6) serving Basin 4 that would be
constructed near Southern Avenue and Dean Road to serve the eastern portion of Central Buckeye. A
208 Amendment is being prepared, which defines the service area of Grand View WRF starting east of
Dean Road so the developments along Southern Avenue from 231st Avenue to Dean Road may be
connected to the Central WRF collection system by a lift station if it is not included in the Grand View
service area. Then, the Central WRF would serve the land areas east of SR 85 that are not in the Sundance
or Grand View WRF basins. Grand View WRF would be located out of the Gila River 100-year floodplain so
the location would require a lift station along Baseline Road and Dean Road to pump flow from the
southern parts of Basin 4 located in the floodplain. Future infrastructure for Option 2 East is presented in
Figure 5.17.
Both options need a lift station along Broadway Road to serve the future Rainbow Ranch development.
The lift station is used to pump flow from a lower elevation at the development to the existing system
along Watson Road. The lift station could potentially be moved farther south to the Roeser Road or
Southern Avenue alignments if additional developers were come in and be served by the Watson Road
sewer main.
10
Sundance Golf
Club
Gila River
85
10
Valencia
Allenville
Buckeye
303
10
10
10
Gila River
P
Liberty
WR F
"
=)
"
=)
"
=)
WR F
"
=)
"
=)
"
=)
"
=)
Beloat Rd
Baseline Rd
Southern Ave
Broadway Rd
Lower
Buckeye Rd
Yuma Rd
Van Buren St
McDowell Rd
4
3
2
1
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O
0
1
0.5
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5.16 Central Buckeye Option 1 Future Infrastructure East of SR 85
CITY OF BUCKEYE
Legend
FM
Proposed FM
"
=)
LS
"
=)
Proposed LS
WR F
WRF
Gravity Sewer Main (inches)
≤8
10 - 12
15 - 18
21 - 36
42 - 66
Proposed Gravity Sewer Main
(inches)
15
18-21
24
30-36
42-48
60-66
Collection Basins
1
2
3
4
5
Projected Development Phase
2030
2035
2040
Existing
Post 2040
#
#
#
#
#
#
#
#
#
WR F
"
=)
"
=)
"
=)
WR F
"
=)
"
=)
"
=)
WR F
"
=)
Beloat Rd
Baseline Rd
Southern Ave
Broadway Rd
Lower
Buckeye Rd
Yuma Rd
Van Buren St
McDowell Rd
195th Ave
Airport Rd
Dean Rd
Rainbow Rd
Watson Rd
Apache Rd
Miller Rd
Rooks Rd
Oglesby Rd
4
3
2
1
Last Revised: October 31, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch03\
O
0
1
0.5
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5.17 Central Buckeye Option 2 Future Infrastructure East of SR 85
CITY OF BUCKEYE
Legend
FM
Proposed FM
"
=)
LS
"
=)
Proposed LS
WR F
WRF
WR F
Proposed WRF
Gravity Sewer Main (inches)
≤8
10 - 12
15 - 18
21 - 36
42 - 66
Proposed Gravity Sewer
Main (inches)
15
18-21
24
30-36
42-48
60-66
Collection Basins
1
2
3
4
5
Projected Development
Phase
2030
2035
2040
Existing
Post 2040
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-38
5.5.4.5
Infrastructure Options West of MC SR 85
The Cipriani development is projected to develop in the 2030 phase, and it is separated from the existing
Central WRF collection system. In the interim before WRF 3 is constructed in Basin 3, a package plant is
planned to be constructed in the 2030 planning period to serve Cipriani. In the post-2030 planning
period, the package plant would be phased out, and a lift station would be constructed to pump flow
from Cipriani to a future WRF 3 that will serve Basin 3. Another lift station would need to be constructed
on the west side of Cipriani to overcome elevation differences and pump wastewater flow to Johnson
Road. Figure 5.18 presents the proposed wastewater collection system infrastructure for West of MC
SR 85.
Wastewater from the developable area along SR 85 would be directed south to a future lift station. The
wastewater would then be pumped east to the Central WRF until wastewater flows are high enough to
construct WRF 3. A pipe capacity evaluation is needed to determine if wastewater flows that originate
west of SR85 can be conveyed through the existing pipes along Rooks Road.
Four additional lift stations would need to be constructed West of MC SR 85 to allow wastewater to cross
the Buckeye and RID canals. A lift station is proposed to be constructed along Hazen Road to pump
wastewater from developments south of the Buckeye Canal to the gravity sewer main along Union Pacific
Railroad. Two additional lift stations are proposed along the Palo Verde Road and Johnson Road to get
wastewater across the RID Canal before connecting to gravity sewer mains.
10
Hassayampa
River
Dixie
Hassayampa
Palo Verde
10
10
Sundance G
Club
Gila River
85
10
Valencia
Allenville
Conger
Buckeye
WR F
"
=)
"
=)
"
=)
WWPP
"
=)
"
=)
"
=)
WR F
"
=)
"
=)
"
=)
"
=)
4
3
2
1
Last Revised: October 31, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch03\
O
0
1
0.5
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5.18 Central Buckeye Future Infrastructure West of SR 85
CITY OF BUCKEYE
Legend
"
=)
LS
"
=)
Proposed LS
FM
Proposed FM
WR F
WRF
WR F
Proposed WRF
WWPP Proposed Package
Plant
Gravity Sewer Main (inches)
≤8
10 - 12
15 - 18
21 - 36
42 - 66
Proposed Gravity Sewer
Main (inches)
15
18-21
24
30-36
42-48
60-66
Collection Basins
1
2
3
4
5
Projected Development
Phase
2030
2035
2040
Existing
Post 2040
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-40
5.5.4.6
Wastewater System Capacity Evaluation
2024 Pipeline Capacity Evaluation
The 2024 wastewater collection system was evaluated using design flows based on the land use type and
percentage developed, multiplied by the PF. The model predicted that the existing pipes in Central
Buckeye have sufficient capacity to convey peak dry weather flows except for portions of the gravity
pipeline along Watson Road. The pipeline runs out of capacity once the commercial area along Watson
Road and Yuma Road is reconnected to the Central WRF service area basin. The 2025 deficiencies are
shown in red in Figure 5.19 and summarized below.
WW26 (Watson Road and Lower Buckeye Road) – This project consists of replacing approximately
5,303 feet of 12-inch diameter pipeline along Watson Road from Lower Buckeye Road to Burton
Avenue—the existing pipeline surcharges under 2030 peak flow. To provide adequate capacity, the
pipeline should be replaced with a 30-inch diameter pipeline.
WW27 (Watson Road and Roeser Road) – This project consists of replacing approximately
1,550 feet of 15-inch diameter pipeline along Watson Road from Mobile Lane to Bowker Street—the
existing pipeline surcharges under 2030 peak flow. To provide adequate capacity, the pipeline should
be replaced with a 30-inch diameter pipeline.
WW28 (SR 85 and Apache Road) – This project consists of replacing approximately 364 feet of
24-inch diameter pipeline along SR 85 from Apache Road to Narramore Avenue. The existing pipeline
surcharges under buildout peak flows. To provide adequate capacity, the pipeline should be replaced
with a 36-inch diameter pipeline.
WW29 (Irwin Avenue and 4th Street) – This project consists of replacing approximately 933 feet of
30-inch diameter pipeline along Irwin Avenue from 4th Street to 6th Street. The existing pipeline
surcharges under buildout peak flow. To provide adequate capacity, the pipeline should be replaced
with a 42-inch diameter pipeline. This pipeline capacity limitation is significant because future
development west of SR 85 will need to pass through this pipeline.
Future Pipeline Capacity Evaluation
A capacity analysis of the planned future collection system (2030, 2035, and 2040) was performed by
applying the planned future wastewater flows in the model to the existing and planned future pipes
anticipated in each future planning period. The purpose of this evaluation is to verify that planned future
pipes are adequately sized and to determine if currently installed pipes are adequate to convey future
flows through 2040.
The following sections summarize the proposed improvements to existing sewer mains that will serve
future users. The capacity deficiencies to the existing pipelines are shown in Figure 5.19.
Model results for buildout flows with future infrastructure are shown in Appendix Figure 5A.4. Future
pipelines were placed in the mile streets in the model to represent growth in undeveloped areas. The
actual pipe layout may differ.
10
assayampa
River
Dixie
Hassayampa
on
Palo Verde
10
Sundance Golf
Club
Raven Golf Club
at Verrado
Skyline
Regional Park
Gila River
85
10
Robbins Butte
Wildlife Area
Valencia
Allenville
Conger
Buckeye
10
10
10
Litchfield Park
McMicken
Avondale
Goodyear
Gila River
Estrella
Mountain Park
Phoenix/Goodyear
Airport
Liberty
WR F
"
=)
"
=)
"
=)
WR F
Beloat Rd
Baseline Rd
Southern Ave
Broadway Rd
Lower
Buckeye Rd
Yuma Rd
Van Buren St
McDowell Rd
Thomas Rd
Indian
School Rd
Camelback Rd
Bethany
Home Rd
195th Ave
Airport Rd
Dean Rd
Rainbow Rd
Watson Rd
Apache Rd
Miller Rd
Rooks Rd
Oglesby Rd
Turner Rd
Wilson Ave
Palo Verde Rd
Bruner Rd
Johnson Rd
Perryville Rd
Central WRF
Sundance WRF
24"
10"
30"
8"
12"
15"
10"
12"
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O
0
1.5
0.75
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5.19 Central Buckeye Existing Pipeline Deficiencies
CITY OF BUCKEYE
Legend
Gravity Main
Force Main
"
=)
Lift Station
Gravity Sewer Main
Deficiency
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-42
2030 Improvements
The 2030 deficiencies are shown in red in Figure 5.20 and summarized below.
WW30 (Centre Avenue and 7th Street) – This project consists of replacing approximately 3,240 feet
of 10-inch diameter pipeline along Centre Avenue from 7th Street to 10th Lane—the existing pipeline
surcharges under 2030 peak flow. To provide adequate capacity, the pipeline should be replaced with
a 15-inch diameter pipeline.
WW31 (Lower Buckeye Road and Apache Road) – This project consists of replacing approximately
6,316 feet of 12-inch diameter pipeline 1,900 feet north of Lower Buckeye Road from Apache Road to
Watson Road—the existing pipeline surcharges under 2030 peak flow. To provide adequate capacity,
the pipeline should be replaced with a 15-inch diameter pipeline.
2035 Improvements
The 2035 deficiencies are shown in Figure 5.20 in red and are summarized below.
WW32 (Yuma Road and 241st Lane) – This project consists of replacing approximately 743 feet of
10-inch diameter pipeline along Yuma Road from 241st Lane to 241st Avenue—the existing pipeline
surcharges under 2035 peak flow. To provide adequate capacity, the pipeline should be replaced with
a 15-inch diameter pipeline.
WW33 (239th Drive and Zak Road) – This project consists of replacing approximately 1,282 feet of
8-inch diameter pipeline along 239th Drive from Zak Road to 240th Avenue—the existing pipeline
surcharges under 2035 peak flow. To provide adequate capacity, the pipeline should be replaced with
a 15-inch diameter pipeline.
2040 Improvements
The 2040 deficiencies are shown in Figure 5.20 in red and are summarized below.
WW34 (Apache Road and Southern Avenue) – This project consists of replacing 1,566 feet of
12-inch diameter pipeline along Apache Road from Southern Avenue to Alta Vista Road—the existing
pipeline surcharges under the 2040 peak flow. To provide adequate capacity, the pipeline should be
replaced with a 15-inch diameter pipeline.
5.5.4.7
Lift Station Capacity Evaluation
The peak hour inflow for each planning period was compared to the existing lift station firm capacity.
Table 5.15 summarizes the lift station capacity analysis and includes the existing firm capacity as well as
the peak dry weather inflow and capacity surplus or deficit for each planning period.
The Industrial Park Lift Station was designed to pump flow for the existing Industrial Park development
west of SR 85. It will only need an expansion if the City plans to connect future developments north of the
lift station. Otherwise, the City can construct a new lift station close to Industrial Park Lift Station and
pump flows to the Central WRF in the interim before WRF 3 is constructed.
The Blue Horizon Lift Station was designed to pump flow from northeast Sundance service basin to the
Sundance WRF. The lift station's service area is planned to continue expanding through the 2040 planning
period. The City may choose to phase out the Blue Horizon Lift Station for a gravity main along the north side
of the RID Canal to the Sundance WRF. A hydraulic evaluation would be needed to size the gravity main.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-43
Table 5.15
Central Buckeye Lift Station Capacity Evaluation
Lift
Station
ID
Lift Station
Name(1)
Planning
Period
Number of
Pumps
Firm
Capacity
(gpm)
2024
2030
2035
2040
Peak Hour
Inflow
(gpm)
Surplus/
Deficit
(gpm)
Peak Hour
Inflow
(gpm)
Surplus/
Deficit
(gpm)
Peak Hour
Inflow
(gpm)
Surplus/
Deficit
(gpm)
Peak Hour
Inflow
(gpm)
Surplus/
Deficit
(gpm)
W-3
Buckeye
Industrial Park
Existing
2
517
216
301
227
290
239
278
261
256
W-1
Shadow Canyon Existing
2
30
24
6
24
6
24
6
24
6
W-2
Blue Horizon(2)
Existing
2
4,252
2,337
1,915
3,171
1,081
3,327
925
3,504
748
W-25
Turner LS
2035
2
694
129
565
259
435
W-17
Cipriani
2035
5
3,500
3,045
455
3,193
307
W-20
Lower Buckeye
Road LS
2030
2
100
16
84
36
64
99
1
W-23
Rainbow Road LS 2035
2
200
34
166
95
105
W-11
Hazen Road LS
2035
2
694
55
639
248
446
W-14
Dean Road LS
2035
4
1,400
775
625
1,080
320
W-24
Palo Verde LS
2035
4
1,400
221
1,179
977
423
W-26
Johnson LS
2030
5
3,500
1,683
1,817
2,249
1,251
2,958
542
W-28
Pacific Railroad
LS
2035
2
694
50
644
220
474
W-29(3)
Turner and Union
Pacific LS
2030
2
694
508
186
Notes:
(1) The Broadway Lift Station was not modeled or analyzed for capacity improvements. Flows into the lift station are not expected to increase because the area it serves is fully
developed.
(2) Capacity of lift station to be confirmed.
(3) W-29 lift station is used to pump flow from east of SR 85 to West of SR 85 to the Central WRF Basin. The lift station will be used until WRF 3 is constructed.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-44
5.5.4.8
Wastewater Treatment Capacity Evaluation
The Central treatment facilities were evaluated against the projected wastewater flows to determine the
need and timing for future WWTP expansions. The City's WRF capacity is calculated in terms of ADMM
flows. The ADMM flows are assumed to be 17 percent more than the average daily flows. Table 5.16
shows the current and projected wastewater flows relative to the buildout flow requirements for each
WRF.
The capacity of Central WRF assumes the facility utilizes existing technologies for treatment. However, the
City has plans to upgrade treatment to MBR which would raise the total available capacity of the
treatment plant and potentially delay expansion triggers.
Table 5.16
Central Buckeye WRFs ADMM Flow Projections
WRF Basin
Average Daily Flow of the Maximum Month (mgd)
2024
2030
2035
2040
Buildout
Central(1)
2.6
4.7
5.3
5.6
13.5
Sundance
2.1
4.0
4.1
4.1
4.7
WRF 3
0
1.1
1.7
2.5
13.8
Grand View WRF
0
0
0.1
0.5
6.1
Notes:
(1) Central WRF Basin buildout flow includes flows from Beloat Road to Baseline Road in the south area of Basin 4.
The treatment facility capacity analysis has been calculated for Option 1 and Option 2 East, and Option 1
and Option 2 West.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-45
East of MC SR 85
Option 1 East is for future flows from Basins 1 and 4 to go to the Central WRF. The existing capacity of the
Central WRF is 4.5 mgd. As shown in Figure 5.20, the projected ADMM flow surpasses the 80 percent
trigger expansion in 2027, so an expansion to 6 mgd is recommended before 2030. Another expansion to
8 mgd is recommended by 2037. The ADMM flow drops in 2035 to account for a future WRF in Basin 3
that will treat the wastewater west of SR 85. Before 2035, some of the wastewater in Basin 3 will be
pumped to the Central WRF. The projected buildout capacity requirement for the Central WRF is 20 mgd.
Figure 5.20 Central Buckeye Wastewater Treatment Capacity Evaluation through 2040 (Option 1 East)
0
1
2
3
4
5
6
7
8
9
2020
2022
2024
2026
2028
2030
2032
2034
2036
2038
2040
Flow
(mgd)
Date
Average Day
Max Month
Capacity
80% Capacity
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-46
Option 2 East will have a future Grand View WRF (formerly WRF 6) along Southern Avenue and Dean Road
that serves Basin 4. As shown in Figure 5.21, the projected ADMM flow does not vary significantly from
Option 1 East, and both options will have the same recommended expansion timing. The expansion
timings for Central WRF are primarily controlled by the new developments in Basin 1. The developments
in Basin 4 are projected to start developing in 2030 and not expected to be completed until after 2040.
Actual development times may vary. The buildout flows from these developments in Basin 4 are not
shown in this 20-year capacity evaluation timeframe. The buildout ADMM flow for Option 2 East is
14 mgd.
Figure 5.21 Central Buckeye Wastewater Treatment Capacity Evaluation through 2040 (Option 2 East)
0
1
2
3
4
5
6
7
8
9
2020
2022
2024
2026
2028
2030
2032
2034
2036
2038
2040
Flow
(mgd)
Date
Average Day
Max Month
Capacity
80% Capacity
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-47
As shown in Figure 5.22, the recommended initial capacity of Grand View WRF is 0.6 mgd, and it will not
need an additional expansion before 2040.
Figure 5.22 Grand View WRF Wastewater Treatment Capacity Evaluation through 2040 (Option 2 East)
As shown in Figure 5.23, a Sundance WRF expansion is recommended in 2029 from 3.6 mgd to 6.0 mgd.
Figure 5.23 Sundance WRF Wastewater Treatment Capacity Evaluation through 2040
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
2022
2024
2026
2028
2030
2032
2034
2036
2038
2040
Flow
(mgd)
Date
Average Day
Max Month
80% Capacity
Capacity
0
1
2
3
4
5
6
7
2022
2024
2026
2028
2030
2032
2034
2036
2038
2040
Flow
(mgd)
Date
Average Day
Max Month
80% Capacity
Capacity
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-48
West of MC SR 85
The future flows from Basin 3 initially go to the Central WRF. Once the flows are great enough, WRF 3 is
constructed and flows from the Cipriani area and the mile west of SR 85 go to WRF 3 instead of the
Central WRF. As shown in Figure 5.24, the WRF 3 initial capacity is 2 mgd. An expansion is expected to
trigger when the ADMM flow surpasses the 80 percent trigger expansion in 2034, so an expansion to
4 mgd is recommended before 2035.
Figure 5.24 WRF 3 Wastewater Treatment Capacity Evaluation through 2040
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
2025
2030
2035
2040
Flow
(mgd)
Date
Average Day
Max Day
Capacity
80% Capacity
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-49
As shown in Figure 5.25, the initial proposed capacity for the Cipriani package plant is 1 mgd. The
80 percent capacity trigger is projected to occur in 2031, so the package plant will be phased out for a lift
station to WRF 3 by the 2035 planning period.
Figure 5.25 Cipriani Package Plant Wastewater Treatment Capacity Evaluation through 2040
5.5.4.9
Infrastructure Projects
Based on the collection system evaluation and improvement projects identified in Section 5.5.4, the
following projects have been identified and are described below.
Table 5.17 is organized by option in Central Buckeye. Figure 5.26 shows the projects in Table 5.17 that are
associated with Option 1 East and Option 1 West.
The Trigger column in Table 5.17 identifies when a project needs to be in service. Projects to address
known deficiencies are assigned the 2030 planning year so that the projects are completed in the next
5 years. Other projects need to be constructed in time to make sure that the performance criteria can be
met. Project timing is crucial. For instance, WRF expansion is triggered when flow reaches 80 percent of
capacity. Similarly, infrastructure projects serving new developments must coincide with construction
timelines. For these, the development's anticipated planning year acts as the trigger. The City maintains
flexibility to adjust project start dates based on evolving conditions, ensuring timely completion.
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
2022
2024
2026
2028
2030
2032
2034
2036
2038
2040
Flow
(mgd)
Date
Average Day
Max Month
80% Capacity
Capacity
10
Hassayampa
River
Dixie
Hassayampa
Arlington
Palo Verde
10
Sundance Golf
Club
Raven Golf Club
at Verrado
Skyline
Regional Park
Gila River
85
10
Robbins Butte
Wildlife Area
Valencia
Allenville
Conger
Buckeye
10
10
10
McMicken
Gila River
P
Liberty
WR F
"
=)
"
=)
"
=)
WR F
"
=)
WWPP
WR F
"
=)
"
=)
"
=)
"
=)
"
=)
WR F
"
=)
"
=)
"
=)
"
=)
Beloat Rd
Baseline Rd
Southern Ave
Broadway Rd
Lower
Buckeye Rd
Yuma Rd
Van Buren St
McDowell Rd
Thomas Rd
Indian
School Rd
Camelback Rd
Bethany Home Rd
Perryville Rd
195th Ave
Airport Rd
Dean Rd
Rainbow Rd
Watson Rd
Apache Rd
Miller Rd
Rooks Rd
Oglesby Rd
Turner Rd
Wilson Ave
Palo Verde Rd
Bruner Rd
Johnson Rd
4
3
2
1
WW35
WW53
WW54
WW28
WW75
WW70
WW89
WW32
WW94
WW93
WW123
WW68
WW29
WW40
WW33
WW107
WW37 WW39
WW122
WW50
WW109
WW27
WW34
WW38
WW49
WW63
WW51
WW84
WW125
WW114
WW95
WW41
WW128 WW129
WW46
WW124
WW103
WW69
WW82
WW79
WW99
WW97
WW87
WW86
WW83
WW30
WW126
WW127
WW71
WW43
WW101
WW115
WW117
WW47
WW120
WW81
WW48
WW42
WW80
WW67
WW106
WW105
WW62
WW108
WW52
WW111
WW119
WW26
WW76
WW102
WW96
WW100
WW121
WW58
WW64
WW110
WW56
WW44
WW66
WW31
WW113
WW61
WW72
WW118
WW112
WW55
WW60
WW116
WW77
WW74
WW36
WW78
WW104
WW88
WW73
WW85
WW57
WW65
WW45
WW59
WW91
Last Revised: October 31, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch03\
O
0
1.5
0.75
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5.26 Central Buckeye Recommended Infrastructure Improvements
CITY OF BUCKEYE
Legend
FM
Proposed FM
"
=)
LS
"
=)
Proposed LS
WR F
WRF
WR F
Proposed WRF
WWPP Proposed Package
Plant
Gravity Sewer Main (inches)
≤8
10 - 12
15 - 18
21 - 36
42 - 66
Proposed Gravity Sewer Main
(inches)
15
18-21
24
30-36
42-48
60-66
Collection Basins
1
2
3
4
5
Projected Development Phase
2030
2035
2040
Existing
Post 2040
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-51
Table 5.17
Central Buckeye Wastewater Infrastructure Projects
Project No.
Option No.
Description
Justification
Diameter/Size
(inch/ mgd)
Length/Qty
(feet or no.)
Planning Triggers
(Year)
WW26
Both
Expand the 12-inch gravity sewer main to a 30-inch gravity sewer main along Watson Road from Lower
Buckeye Road to Burton Avenue.
Pipeline surcharges under 2030 peak dry weather flows.
30
1,600
Pipeline Capacity Above 82%.
(2030)
WW27
Both
Expand the 15-inch gravity sewer main to a 30-inch gravity sewer main along Watson Road from Mobile
Lane to Bowker Street.
Pipeline surcharges under 2030 peak dry weather flows.
30
600
Pipeline Capacity Above 82%.
(2030)
WW28
Both
Expand the 24-inch gravity sewer main to a 36-inch gravity sewer main along MC 85 from Apache Road to
Narramore Avenue.
Pipeline surcharges under 2030 peak dry weather flows.
36
300
Pipeline Capacity Above 82%.
(2030)
WW29
Both
Expand the 30-inch gravity sewer main to a 42-inch gravity sewer main along Irwin Avenue from 4th Street
to 6th Street.
Pipeline surcharges under 2030 peak dry weather flows.
42
800
Pipeline Capacity Above 82%.
(2030)
WW30
Both
Expand the 10-inch gravity sewer main to a 15-inch gravity sewer main along Centre Avenue from 10th
Lane to 7th Street.
Pipeline surcharging under 2030 peak dry weather flows.
15
1,000
Pipeline Capacity Above 82%.
(2030)
WW31
Both
Expand the 12-inch gravity sewer main to a 15-inch gravity sewer main 1,900 feet north of Lower Buckeye
Road from Apache Road to Watson Road.
Pipeline surcharges under 2030 peak dry weather flows.
15
1,900
Pipeline Capacity Above 82%.
(2030)
WW32
Both
Expand the 10-inch gravity sewer main to a 15-inch gravity sewer main along Yuma Road from 241st Lane
to 241st Avenue.
Pipeline surcharges under 2035 peak dry weather flows.
15
200
Pipeline Capacity Above 82%.
(2035)
WW33
Both
Expand the 8-inch gravity sewer main to a 15-inch gravity sewer main along 239th Drive from Zac Road to
240th Avenue.
Pipeline surcharges under 2035 peak dry weather flows.
15
400
Pipeline Capacity Above 82%.
(2035)
WW34
Both
Expand the 12-inch gravity sewer main to a 15-inch gravity sewer main along Apache Road from Southern
Avenue to Alta Vista Road.
Pipeline surcharges under 2040 peak dry weather flows.
15
500
Pipeline Capacity Above 82%.
(2040)
WW35
Both
Construct a 2 mgd lift station in Basin 3 along Turner Road.
Construct a future lift station to pump flow from future
developments to Central WRF.
2
1
Development in the area.
(2030)
WW36
Both
Construct an 8-inch force main along Baseline Road from Turner Road to 263rd Avenue.
Connect the future lift station along Turner Road to the
existing collection system in Basin 1.
8
7,924
Development in the area.
(2030)
WW37
Both
Expand Central WRF from 4.5 mgd to 6 mgd total capacity.
Treat flow from future developments.
1.5
1
Wastewater flow reaches 80% of capacity.
(2030)
WW38
Both
Expand Sundance WRF from 3.6 mgd to 6 mgd total capacity.
Treat flow from future developments.
2.4
1
Wastewater flow reaches 80% of capacity.
(2029)
WW39
Both
Expand Central WRF from 6 mgd to 8 mgd total capacity.
Treat flow from future developments.
2
1
Wastewater flow reaches 80% of capacity.
(2037)
WW40
Both
Construct an 18-inch gravity sewer main along Watson Road from Yuma Road to Pima Street.
Connect the commercial area along Watson Road and
Acacia Crossing with Central WRF.
18
900
Development in the area.
(2030)
WW41
Both
Construct a 21-inch gravity sewer main along Watson Road from Durango Street to Magnolia Street.
Connect the commercial area along Watson Road and
Acacia Crossing with Central WRF.
21
1,800
Development in the area.
(2030)
WW42
Both
Construct a 15-inch gravity sewer main along Southern Avenue from SR 85 to Rooks Road.
Convey flow from future developments to collection system. 15
4,400
Development in the area.
(2030)
WW43
Both
Construct an 18-inch gravity sewer main along Southern Avenue from SR 85 to Turner Road.
Convey flow from future developments to collection system. 18
3,900
Development in the area.
(2030)
WW44
Both
Construct a 21-inch gravity sewer main along Turner Road from Southern Avenue to Union
Pacific Railroad.
Convey flow from future developments to collection system. 21
7,600
Development in the area.
(2030)
WW45
Both
Construct a 30-inch gravity sewer main along Johnson Road from Lower Buckeye Road to
Southern Avenue.
Convey flow from future developments to collection system. 30
12,700
Development in the area.
(2030)
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-52
Project No.
Option No.
Description
Justification
Diameter/Size
(inch/ mgd)
Length/Qty
(feet or no.)
Planning Triggers
(Year)
WW46
Both
Construct a 15-inch gravity sewer main along Lower Buckeye Road from 305th Avenue to Johnson Road.
Convey flow from future developments to collection system. 15
3,100
Development in the area.
(2030)
WW47
Both
Construct a 15-inch gravity sewer main along Johnson Road from Interstate 10 to Maricopa Road.
Convey flow from future developments to collection system. 15
6,400
Development in the area.
(2030)
WW48
Both
Construct a 15-inch gravity sewer main along Johnson Road from Maricopa Road to Durango Street.
Convey flow from future developments to collection system. 15
5,000
Development in the area.
(2030)
WW49
Both
Construct an 18-inch gravity sewer main along Johnson Road from Durango Street to Watkins Street.
Convey flow from future developments to collection system. 18
1,700
Development in the area.
(2030)
WW50
Both
Construct a 24-inch gravity sewer main along Johnson Road from Watkins Street to Lower Buckeye Road. Convey flow from future developments to collection system. 24
1,300
Development in the area.
(2030)
WW51
Both
Construct a 33-inch gravity sewer main along Lower Buckeye Road from 315th Avenue to 313th Avenue.
Convey flow from future developments to collection system. 33
1,500
Development in the area.
(2030)
WW52
Both
Construct a 4-inch force main along Lower Buckeye Road from 313th Avenue to Johnson Road.
Convey flow from future developments to collection system. 4
4,700
Development in the area.
(2030)
WW53
Both
Construct 100 gpm LS on 313th Avenue and Lower Buckeye Road.
Convey flow from future developments to collection system. 100
1
Development in the area.
(2030)
WW54
1
Construct 1.0-mgd package plant on Southern Avenue and Johnson Road.
Treat flow from future developments.
2
1
Development in the area.
(2030)
WW55
Both
Construct a 15-inch gravity sewer main along Turner Road from Interstate 10 to Lower Buckeye Road.
Convey flow from future developments to collection system. 15
7,800
Development in the area.
(2035)
WW56
Both
Construct an 18-inch gravity sewer main along Turner Road from Lower Buckeye Road to
Southern Avenue.
Convey flow from future developments to collection system. 18
5,700
Development in the area.
(2035)
WW57
Both
Construct a 21-inch gravity sewer main along Lower Buckeye Road from Broadway Road to Yuma Road.
Convey flow from future developments to collection system. 21
12,100
Development in the area.
(2035)
WW58
Both
Construct a 15-inch gravity sewer main along Wilson Avenue from McDowell Road to Van Buren Street.
Convey flow from future developments to collection system. 15
5,815
Development in the area.
(2035)
WW59
Both
Construct a 30-inch gravity sewer main along Palo Verde Road from Washington Street to the RID Canal.
Convey flow from future developments to collection system. 30
17,300
Development in the area.
(2035)
WW60
Both
Construct a 24-inch gravity sewer main along Sun Valley Parkway from Van Buren Street to
Washington Street and along Van Buren Street from Wilson Avenue to Van Buren Street.
Convey flow from future developments to collection system. 24
7,700
Development in the area.
(2035)
WW61
Both
Construct a 15-inch gravity sewer main along Van Buren Street from Turner Road to Wilson Avenue.
Convey flow from future developments to collection system. 15
6,400
Development in the area.
(2035)
WW62
Both
Construct a 15-inch gravity sewer main along Turner Road from McDowell Road to Van Buren Street.
Convey flow from future developments to collection system. 15
5,300
Development in the area.
(2035)
WW63
Both
Construct a 33-inch gravity sewer main along Palo Verde Road from Jackson Avenue to Buckeye
Canal Road and a 30-inch gravity main along Palo Verde Road from Maricopa Road to Jackson Avenue.
Convey flow from future developments to collection system. 33
1,100
Development in the area.
(2035)
WW64
Both
Construct a 24-inch gravity sewer main along Wilson Road from Alta Vista Road to Monroe Avenue.
Convey flow from future developments to collection system. 24
5,800
Development in the area.
(2035)
WW65
Both
Construct a 36-inch gravity sewer main along Bruner Road from Southern Avenue to Lower River Road.
Convey flow from future developments to collection system. 36
12,400
Development in the area.
(2035)
WW66
Both
Construct a 42-inch gravity sewer main along Lower River Road from Bruner Road to Palo Verde Road.
Convey flow from future developments to collection system. 42
7,700
Development in the area.
(2035)
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-53
Project No.
Option No.
Description
Justification
Diameter/Size
(inch/ mgd)
Length/Qty
(feet or no.)
Planning Triggers
(Year)
WW67
Both
Construct a 60-inch gravity sewer main to WRF 3 along Palo Verde Road from Hazen Road to
287th Avenue.
Convey flow from future developments to collection system. 60
7,700
Development in the area.
(2035)
WW68
Both
Construct a 24-inch gravity sewer main along Elwood Street from 311th Avenue to Johnson Road.
Convey flow from future developments to collection system. 24
3,200
Development in the area.
(2035)
WW69
Both
Construct an 18-inch gravity sewer main along Broadway Road from 303rd Avenue to Johnson Road.
Convey flow from future developments to collection system. 18
3,000
Development in the area.
(2035)
WW70
1
Construct 5 mgd LS on Southern Avenue and Johnson Road.
Convey flow from future developments to collection system. 5
1
Development in the area.
(2035)
WW71
Both
Construct 2 mgd LS on Palo Verde Road and the RID Canal.
Convey flow from future developments to collection system. 2
1
Development in the area.
(2035)
WW72
1
Construct a 18-inch pressurized pipeline along Southern Avenue from Johnson Road to Bruner Road.
Convey flow from future developments to collection system. 18
6,300
Development in the area.
(2035)
WW73
Both
Construct a 12-inch pressurized pipeline along Palo Verde Road from The RID Canal to Maricopa Road.
Convey flow from future developments to collection system. 12
11,100
Development in the area.
(2035)
WW74
Both
Construct a 15-inch gravity sewer main along Turner Road from Buckeye Canal Road to Hazen Road.
Convey flow from future developments to collection system. 15
5,100
Development in the area.
(2035)
WW75
Both
Construct 1 mgd LS on the intersection of Hazen Road and Turner Road.
Convey flow from future developments to collection system. 1
1
Development in the area.
(2035)
WW76
Both
Construct an 8-inch pressurized main along Hazen Road from Turner Road to Wilson Avenue.
Convey flow from future developments to collection system. 8
7,000
Development in the area.
(2035)
WW77
Both
Construct a 33-inch gravity sewer main along Union Pacific Railroad from Turner Road to 279th Avenue.
Convey flow from future developments to collection system. 33
3,100
Development in the area.
(2035)
WW78
Both
Construct a 36-inch gravity sewer main along 279th Avenue from Union Pacific Railroad to Monroe Avenue
and along Monroe Avenue from 279th Avenue to WRF 3 on 287th Avenue.
Convey flow from future developments to collection system. 36
9,100
Development in the area.
(2035)
WW79
Both
Construct a 15-inch gravity sewer main along Rainbow Road from Dunlap Road to Broadway Road.
Convey flow from future developments to collection system. 15
3,200
Development in the area.
(2035)
WW80
Both
Construct a 15-inch gravity sewer main along Broadway Road from Rainbow Road to Watson Road.
Convey flow from future developments to collection system. 15
6,300
Development in the area.
(2035)
WW81
Both
Construct a 15-inch gravity sewer main along Verado Way from Broadway Road to Roeser Road.
Convey flow from future developments to collection system. 15
3,100
Development in the area.
(2035)
WW82
Both
Construct a 30-inch gravity sewer main along Roeser Road from Tuthill Road to Verrado Way.
Convey flow from future developments to collection system. 30
2,900
Development in the area.
(2035)
WW83
Both
Construct a 33-inch gravity sewer main along Roeser Road from Verrado Way to Airport Road.
Convey flow from future developments to collection system. 33
3,100
Development in the area.
(2035)
WW84
Both
Construct a 36-inch gravity sewer main along Airport Road from Roeser Road to 225th Avenue.
Convey flow from future developments to collection system. 36
1,700
Development in the area.
(2035)
WW85
Both
Construct a 36-inch gravity sewer main along Sunland Avenue from Airport Avenue to Dean Road and
along Dean Road to the future Pacific Railroad Lift Station. Construct a 36-inch gravity main along
Dean Road from Buckeye Canal Road to Baseline Road.
Convey flow from future developments to collection system. 36
11,000
Development in the area.
(2035)
WW86
Both
Construct a 15-inch gravity sewer main along Verrado Way from Buckeye Canal Road to Maricopa Road.
Convey flow from future developments to collection system. 15
3,200
Development in the area.
(2035)
WW87
Both
Construct an 18-inch gravity sewer main along Verrado Way from Maricopa Road to Baseline Road.
Convey flow from future developments to collection system. 18
3,200
Development in the area.
(2035)
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-54
Project No.
Option No.
Description
Justification
Diameter/Size
(inch/ mgd)
Length/Qty
(feet or no.)
Planning Triggers
(Year)
WW88
Both
Construct a 30-inch gravity sewer main along Baseline Road from 207th Avenue to Dean Road.
Convey flow from future developments to collection system. 30
10,000
Development in the area.
(2035)
WW89
1
Construct 2 mgd capacity LS on Baseline Road and Dean Road.
Pump flow from future developments in Basin 4 to Basin 1. 2
1
Development in the area.
(2035)
WW90
2
Construct 1 mgd capacity LS on Baseline Road and Dean Road.
Pump flow from future developments in Basin 4 to Basin 1. 1
1
Development in the area.
(2035)
WW91
1
Construct an 12-inch pressurized main along Dean Road from Baseline Road to Monroe Avenue and along
Monroe Avenue from Dean Road to 10th Lane.
Convey flow from future developments in Basin 4 to
Basin 1.
12
22,600
Development in the area.
(2035)
WW92
2
Construct an 8-inch pressurized main along Dean Road from Baseline Road to Southern Avenue.
Convey flow from future developments in Basin 4 to
Basin 1.
8
6,400
Development in the area.
(2035)
WW93
Both
Construct 2 mgd WRF 3 near the intersection of Palo Verde Road and Hazen Road.
Treat flow from future developments in Basins 3.
2
1
Development in the area.
(2035)
WW94
Both
Construct 200 gpm LS on Rainbow Road and Broadway Road.
Convey flow from future developments to collection system. 200
1
Development in the area.
(2035)
WW95
Both
Construct 4-inch force main along Broadway Road from Rainbow Road to 230th Avenue.
Convey flow from future developments to collection system. 4
1,900
Development in the area.
(2035)
WW96
Both
Construct 18-inch gravity sewer main along Southern Avenue from Rainbow Road to Dean Road.
Convey flow from future developments to collection system. 18
6,300
Development in the area.
(2035)
WW97
Both
Construct 15-inch gravity sewer main along Southern Avenue from 231st Avenue to Rainbow Road.
Convey flow from future developments to collection system. 15
3,100
Development in the area.
(2035)
WW98
2
Construct Grand View WRF with a capacity of 1 mgd.
Treat flow from future developments in Basin 4.
1
1
Development in the area.
(2035)
WW99
Both
Construct a 15-inch gravity sewer main along Liberty School Road from Union Pacific Railroad to
Southern Avenue.
Convey flow from future developments to collection system. 15
3,100
Development in the area.
(2040)
WW100
Both
Construct a 15-inch gravity sewer main along Liberty School Road from Southern Avenue to
Baseline Road.
Convey flow from future developments to collection system. 15
5,600
Development in the area.
(2040)
WW101
Both
Construct a 24-inch gravity sewer main along Baseline Road from 197th Avenue to 207th Avenue.
Convey flow from future developments to collection system. 24
3,500
Development in the area.
(2040)
WW102
Both
Construct a 21-inch gravity sewer main along Baseline Road from Jackrabbit Trail to 197th Avenue.
Convey flow from future developments to collection system. 21
5,400
Development in the area.
(2040)
WW103
Both
Construct a 15-inch gravity sewer main along Baseline Road from Perryville Road to Jackrabbit Trail.
Convey flow from future developments to collection system. 15
3,000
Development in the area.
(2040)
WW104
Both
Construct a 15-inch gravity sewer main along 191st Avenue from Buckeye Canal Road to Baseline Road.
Convey flow from future developments to collection system. 15
9,100
Development in the area.
(2040)
WW105
Both
Construct a 30-inch gravity sewer main along Broadway Road from Jackrabbit Trail to 199th Avenue and
along 199th Avenue from Broadway Road to Chipman Road.
Convey flow from future developments to collection system. 30
4,700
Development in the area.
(2040)
WW106
Both
Construct a 30-inch gravity sewer main along Chipman Road from 199th Avenue to Tuthill Road and along
Tuthill Road from Chipman Road to Roeser Road.
Convey flow from future developments to collection system. 30
4,500
Development in the area.
(2040)
WW107
Both
Construct an 18-inch gravity sewer main along Jackrabbit Trail from Longview Avenue to Broadway Road. Convey flow from future developments to collection system. 18
1,300
Development in the area.
(2040)
WW108
Both
Construct a 15-inch gravity sewer main along Jackrabbit Trail from Lower Buckeye Road to
Longview Avenue.
Convey flow from future developments to collection system. 15
5,000
Development in the area.
(2040)
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-55
Project No.
Option No.
Description
Justification
Diameter/Size
(inch/ mgd)
Length/Qty
(feet or no.)
Planning Triggers
(Year)
WW109
Both
Construct a 15-inch gravity sewer main along Jackrabbit Trail from Watkins Street to Lower Buckeye Road. Convey flow from future developments to collection system. 15
1,600
Development in the area.
(2040)
WW110
Both
Construct a 15-inch gravity sewer main along Yuma Road from Interstate 10 to Lower Buckeye Road.
Convey flow from future developments to collection system. 15
5,600
Development in the area.
(2040)
WW111
Both
Construct a 15-inch gravity sewer main along Yuma Road from Lower Buckeye Road going south for half
a mile.
Convey flow from future developments to collection system. 15
2,700
Development in the area.
(2040)
WW112
Both
Construct a 30-inch gravity sewer main along Palo Verde Road from Maricopa Road to Jackson Avenue.
Convey flow from future developments to collection system. 30
7,100
Development in the area.
(2035)
WW113
Both
Construct a 24-inch gravity sewer main along Lower Buckeye Road from Yuma Road to Palo Verde Road. Convey flow from future developments to collection system. 24
6,300
Development in the area.
(2035)
WW114
Both
Construct a 15-inch gravity sewer main along Hazen Road from SR 85 to 271st Avenue.
Convey flow from future developments to collection system. 15
1,800
Development in the area.
(2040)
WW115
Both
Construct an 18-inch gravity sewer main along Hazen Road from 271st Avenue to Turner Road.
Convey flow from future developments to collection system. 18
3,600
Development in the area.
(2040)
WW116
Both
Construct a 15-inch gravity sewer main along Hazen Road from Palo Verde Road to Wilson Street.
Convey flow from future developments to collection system. 15
5,900
Development in the area.
(2040)
WW117
Both
Construct a 15-inch gravity sewer main along Wilson Street from Buckeye Canal Road to Hazen Road.
Convey flow from future developments to collection system. 15
4,000
Development in the area.
(2040)
WW118
Both
Construct an 18-inch gravity sewer main along Hazen Road from Wilson Street to Turner Road.
Convey flow from future developments to collection system. 18
6,500
Development in the area.
(2040)
WW119
Both
Construct a 27-inch gravity sewer main along Beloat Road from SR 85 to Rooks Road.
Convey flow from future developments to collection system. 27
4,600
Development in the area.
(2040)
WW120
Both
Construct an 18-inch gravity sewer main along Hazen Road from SR 85 to 252nd Avenue.
Convey flow from future developments to collection system. 18
10,000
Development in the area.
(2040)
WW121
Both
Construct a 21-inch gravity sewer main along Hazen Road from 252nd Avenue to the Central WRF.
Convey flow from future developments to collection system. 21
6,000
Development in the area.
(2040)
WW122
Both
Expand the Central WRF total capacity from 6 mgd to 8 mgd.
Treat flows from future developments to collection system.
2
1
Wastewater flow reaches 80% of capacity.
(2040)
WW123
Both
Expand WRF 3 total capacity from 2 mgd to 4 mgd.
Treat flows from future developments to collection system.
2
1
Wastewater flow reaches 80% of capacity.
(2034)
WW124
Both
Construct 21-inch gravity sewer main along Roosevelt Canal from Turner Road to 271st Avenue.
Convey flow from future developments to collection system. 21
3,100
Development in the area.
(2035)
WW125
Both
Construct 21-inch gravity sewer main along Roosevelt Canal from 271st Avenue to Broadway Road.
Convey flow from future developments to collection system. 21
1,700
Development in the area.
(2035)
WW126
Both
Construct 2 mgd total capacity lift station on Union Pacific Railroad and Dean Road.
Convey flow from future developments to collection system. 2
1
Development in the area.
(2035)
WW127
Both
Construct an 8-inch pressurized main along Turner Road from the Roosevelt Canal to Wier Avenue and
along Wier Avenue from Turner Road to 271st Avenue.
Convey flow from future developments to collection system. 8
400
Development in the area.
(2035)
WW128
Both
Construct 6 mgd firm capacity lift station on Johnson Road and the Roosevelt Canal.
Convey flow from future developments to collection system. 6
1
Development in the area.
(2030)
WW129
Both
Construct a 18-inch pressurized main along Johnson Road across the Roosevelt Canal.
Convey flow from future developments to collection system. 18
500
Development in the area.
(2035)
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
5-56
5.6
Conclusion and Recommendations
1. Most of the City's 2024 wastewater system has sufficient capacity to convey existing and future peak
dry weather flows through 2040. However, there are a few pipelines in the Central WRF basin and Sun
City Festival WRF basin that should be monitored to see if they should be upsized.
2. The City should increase the firm capacity of the Shadow Canyon Lift Station in the 2030 planning
period to provide enough capacity for peak dry weather flow.
3. The City should increase the firm capacity of the Industrial Park Lift Station in the 2030 planning
period to provide enough capacity for peak dry weather flow from the developments west of the
SR 85. The City may also decide to construct an additional lift station instead of upsizing the Industrial
Park Lift Station to pump flow from west of SR 85 to the Central WRF.
4. The City should increase the Festival Ranch WRF from 1 mgd to 2 mgd in the 2030 planning period so
the projected ADMM flows do not exceed 80 percent of the treatment plant capacity.
5. The City should construct the Floreo WRF with a capacity of 0.3 mgd and expand it in the 2035
planning period to 1.2 mgd capacity so the projected ADMM flows do not exceed 80 percent of the
treatment plant capacity.
6. The City should increase the Tartesso WRF from 1.2 mgd to 2.5 mgd in the 2035 planning period so
the projected ADMM flows do not exceed 80 percent of the treatment plant capacity.
7. The City should increase the Central WRF from 4.5 mgd to 6 mgd in the 2030 planning period and
from 6 mgd to 8 mgd in the 2040 planning period so the projected ADMM flows do not exceed
80 percent of the treatment plant capacity.
8. The City should increase the Sundance WRF from 3.6 to 6 mgd in the 2040 planning period so the
projected ADMM flow does not exceed the treatment plant capacity.
9. The City should either construct WRF 3 and Grand View WRF in the 2035 planning period with an
initial capacity of 2 mgd and 1 mgd, respectively, or only construct WRF 3 in the 2035 planning period
with an initial capacity of 2 mgd while 2 lift stations in series pump flow from Basin 4 to the Central
WRF.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-1
CHAPTER 6 RECLAIMED WATER MASTER PLAN
6.1
Introduction
Chapter 6 presents the reclaimed water infrastructure plan for the City as part of the 2025 IWMP. This
chapter presents the reclaimed water infrastructure implementation of the reclaimed water resource
strategies that are in Chapter 3 of the IWMP. The purpose of the reclaimed water Master Plan is to identify
the infrastructure needs and timing required for the City to beneficially use reclaimed water as the City
grows.
The reclaimed water system will adapt over time as the City grows and is able to fund capital
improvements that increase the utilization of reclaimed water and use the water for the highest and best
use for the City's benefit. The path for obtaining full utilization of this reclaimed water source is presented
in this chapter.
The outline of this chapter is as follows:
1. 2024 Reclaimed Infrastructure Overview – This section contains a summary of the overall reclaimed
water system and the strategies that will be implemented in the plan.
2. Reclaimed Water Strategies and Criteria – This section presents reclaimed water management
strategies and documents the performance criteria used to evaluate reclaimed system infrastructure.
3. Master Plan by Reclaimed Service Area – This section presents the master plan, including
infrastructure projects arranged by these reclaimed infrastructure systems: Sun City Festival, Floreo at
Teravalis (Floreo), Tartesso, and Central Buckeye. Each reclaimed water system section contains the
following subsections:
a. Reclaimed Water Flows.
b. Reclaimed Water Strategy.
c.
Infrastructure Projects.
4. Conclusions and Recommendations – This section contains conclusions and recommendations of
the study.
6.2
Reclaimed System Overview
This IWMP study area covers those portions of the City that are north of the Gila River and that are not
served by EPCOR. The master planning area covers approximately 432 square miles, although a portion of
the land is mountainous and will not be developed. In Chapter 2 of the IWMP, the planning area was
grouped into six different WPAs (formerly called DAWS planning areas) that were originally seen as areas
that could possibly become a designation of ASW. These geographical areas are significant for the
reclaimed system also because each area has one or more WRFs that produce reclaimed water that can be
used as a water resource.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-2
This IWMP covers growth through 2040, which growth will only use a portion of the land in each WPA.
The land areas planned for growth include developments that have a CAWS and land zoned industrial or
commercial that may not need a CAWS if land parcels are not subdivided into more than six parcels. The
land parcels are grouped by the planning periods within which the land is expected to develop: 2030,
2035, and 2040. Therefore, the infrastructure planned in this master plan focuses on the land areas
planned to develop by 2040.
Figure 5.1 Chapter 5 presents the WPAs and the land areas that are planned to develop by 2040, colored
by planning period.
6.2.1
Reclaimed Infrastructure Development Strategy
Each WPA has unique water supplies and water supply strategies that influence the reclaimed water
infrastructure that is being planned in each WPA. This section provides background information, and a
more detailed evaluation of each area is presented in Section 4.4.
6.2.1.1
WPA 1
WPA 1 currently includes two developments that each have a separate WRF: the Sun City Festival
development and the Floreo development. Sun City Festival is approximately half-developed and is
expected to fully develop by 2040. The Sun City Festival WRF is planned to serve only the Sun City Festival
development. Floreo is in the early phases of construction. Both developments have a WRF serving the
development. In this IWMP, the future Floreo WRF is also planned to serve the Sun Valley Villages I and II
development in between the Sun City Festival and Floreo development. Additional changes within the
Floreo development would be needed for the Floreo WRF to serve the Sun Valley Villages. North of the
CAP canal, a portion of the Sun City Festival, and the North Star Ranch developments will be served by a
separate WRF north of the canal. The Teravalis development located west of the Hassayampa Wash is
expected to deliver wastewater to a future Teravalis WRF.
The reclaimed water strategy for WPA 1 is to first use reclaimed water for golf course or other irrigation
from each WRF and then recharge the reclaimed water in a USF to obtain LTSC that can be recovered
through potable water recovery wells. The Sun City Festival USF is being constructed, and the Floreo USF
will be constructed when flows are high enough to justify a USF.
6.2.1.2
WPA 2
The Tartesso WRF is planned to be a regional facility that will serve the developments in WPA 2. The
gravity sewer delivering wastewater to the Tartesso WRF is 60 inches in diameter, so it was designed to
convey wastewater flows from a large area.
The Tartesso USF is permitted to recharge 20,000 AFY of reclaimed water, but the City does not own
enough land at the current site to expand the Tartesso WRF to serve planned development in WPA 2, so
additional land will need to be acquired to expand or relocate the WRF. Additional land areas for aquifer
recharge should be located close to potable wells to maximize the groundwater credits that can be
recovered from recharged reclaimed water.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-3
6.2.1.3
WPA 3, 4A, and 4B
Central Buckeye currently has two WRFs: Central WRF and Sundance WRF. The Sundance WRF serves the
WPA 3 north of the RID Canal and west of Perryville Road. The Central WRF is currently planned to serve
the rest of Central Buckeye east of SR 85. One option is that a new WRF 4 (formerly WRF 6) could be
constructed to serve land areas east of Rainbow Road. A 208 Amendment is being prepared for the Grand
View WRF (WRF 4).
Reclaimed water from both WRFs is delivered for irrigation and to the RID canal, which is a GSF so the City
can obtain LTSCs. However, the Central WRF does not have the pumping and transmission capacity to
deliver all the reclaimed water generated at the WRF to the RID canal, so reclaimed water that cannot be
pumped to the RID canal is delivered to the Arlington Canal and the City does not obtain any benefit from
this reclaimed water.
An additional WRF is planned to serve land west of SR 85. This WRF is referred to as WRF 3 (formerly
WRF 5). Cipriani is a future major development on the west side of Central Buckeye that is some distance
from other developments. The plan for Cipriani is to have a package wastewater plant serve the Cipriani
development until infrastructure is in place to connect the Cipriani development to WRF 3 after WRF 3 is
constructed.
6.2.1.4
WPA 5
Much of WPA 5 is within EPCOR's Certificate of Convenience and Necessity area, except for a 1-mile strip
of land, on Jackrabbit Trail, going north to Bethany Home Road. This strip of land is served by the
Sundance WRF, except for lands that are served by septic systems. Reclaimed water from WPA 5 is part of
the reclaimed water from the Sundance WRF that is delivered to the RID canal and for irrigation. A
significant portion of this area is served by septic systems.
6.3
Reclaimed Water Infrastructure Overview
6.3.1
Reclaimed Water Management Strategies
The objective of the reclaimed water systems and reclaimed water management is to accomplish the
following:
Maximize the value of reclaimed water as a water resource, whether for LTSC or direct use.
Find the highest and best use for the reclaimed water.
Implement reclaimed water utilization alternatives that provide the best value.
The following reclaimed water management strategies are or could be used in Buckeye:
1. Irrigation – Reclaimed water used for irrigation is a viable reclaimed water management strategy
when reclaimed water use decreases potable water use that would otherwise be used for irrigation.
Using reclaimed water for irrigation also requires an aquifer storage facility to take the water when
not needed for irrigation.
2. GSF – The City is currently benefitting from an exchange agreement with the RID that operates the
RID Canal. Reclaimed water is delivered to the canal, which enables the canal to reduce groundwater
pumping by an equivalent amount and the City obtains LTSCs for reclaimed water delivered to the canal.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-4
3. Constructed Recharge Facilities – Spreading basins are constructed recharge facilities consisting of
engineered basins that have been excavated, shored, and planned in a way for operators to control
flow to one or more basins. Water can be delivered to basins that go through wet and dry cycles to
dry out the basin and perform the maintenance required to maintain percolation rates. The long-term
feasibility of surface recharge is largely determined by hydrogeologic conditions and the ability of the
soil to continuously percolate water with proper management. Site-specific recharge rates need to be
developed using specific hydrogeologic studies and soil testing.
4. ASR Wells – ASR wells are similar to a water production well with depths between 500 and 2,500 feet
below land surface. Water recharge through an ASR well enters the aquifer and can be recovered later
through the same well as a water source. The ASR well requires periodic bidirectional flow cycling to
remove clogging and maintain the well recharge capacity.
6.3.2
Reclaimed Water System Performance Criteria
The City's reclaimed water system infrastructure recommended in the 2025 IWMP is sized to provide
acceptable levels of performance and reliability.
Performance criteria focus primarily on sizing the reclaimed water infrastructure to provide sufficient
capacity and reliability to take reclaimed water from the WRFs and deliver it to customers or to USF sites.
Future pipelines are sized for flows up to the 2040 planning period. Reclaimed water infrastructure should
satisfy the following criteria:
1. Reclaimed Water Production – Reclaimed water flows are assumed to be 92 percent of the
wastewater flow into a WRF unless stated otherwise for a specific WRF.
2. Pump Stations – Pump stations are designed so that the firm capacity of the pump station will
provide the required capacity.
3. Recharge Basins – USFs need to be capable of recharging water produced by the WRFs for time
periods up to a month when winter storms eliminate the need for outdoor irrigation. The total
recharge capacity should be 50 percent greater than the highest reclaimed water flow so that some
recharge basins can be taken out of service for maintenance and drying periods to maintain the
recharge capacity of the basin.
Where possible, USFs could be located in the area of influence of potable water production wells to
maximize the recharge credits that can be obtained from aquifer recharge. However, poor-quality
reclaimed water can adversely affect the quality of potable water from nearby wells so locating
recharge facilities farther from potable wells may be preferable in some situations. Therefore, the
aquifer recharge strategy should be coordinated with the well pumping and treatment strategy.
4. ASR Wells – ASR wells should have a capacity that is 20 percent higher than the required maximum
recharge flow rate or have on extra ASR well, whichever is greater, for mechanical redundancy and for
well redevelopment.
5. Distribution Pipe Velocity – Pipe velocities should not exceed 7 fps when delivering peak flows.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-5
6.4
Master Plan by Reclaimed Service Area
The Buckeye wastewater collection system has five separate WRF basins that do not fully align with WPAs.
In this section, a separate plan is provided for each service area.
6.4.1
Sun City Festival
6.4.1.1
2024 Reclaimed Water System
The Festival Ranch WRF is located along 287th Avenue and south of Sun Valley Parkway in WPA 1. It has
a current capacity of 1 mgd with two planned expansions to bring the total capacity of the facility to
1.5 mgd in 2030 and 2 mgd in 2038.
Reclaimed water from Festival Ranch WRF is pumped into a transmission main system that transports the
reclaimed water to the Sun City Festival development and golf course. The Sun City Festival development
is entitled to up to 900 AFY, although actual reclaimed water use to date has been less. The City is entitled
to the remaining reclaimed water. A USF is currently being constructed in the Sun City development along
Beardsley Parkway and Desert Oasis Boulevard that will be ready for service in the third quarter of 2025.
The permitted capacity of the USF is 3,700 AFY. Previously, CAP water was used to supplement reclaimed
water flows to irrigate the golf course. With the USF and increasing reclaimed water flows, the USF
provides the ability to obtain LTSCs that can be used to recover water for potable use in addition to using
reclaimed water for irrigation. The City can also recharge CAP water in the facility.
The reclaimed water transmission system consists of approximately 3.7 miles of reclaimed water mains
ranging in size from 2 to 18 inches in diameter. A summary of the City's reclaimed water mains is shown in
Table 6.1. The existing reclaimed water mains are shown in Figure 6.1.
Table 6.1
Sun City Festival Reclaimed Water Pipeline Summary
Diameter (inches)
Length (feet)
2
150
12
17,630
16
1,550
18
190
Total
19,520
N 291st Ave
e
Sun Valley Pkwy
W
Yukon D
r
Deser
t O
as
is B
lvd
W Covey Ln
N 291st Ave
Sun Valley Pkwy
N 251st Ave
N De
s
ert Vista Blvd
N Desert Vista Blvd
W
Morro
w D
r
W Vis
ta North
D
r
W M
cRae D
r
N 2
6
0
th
Ln
W Beardsley Pkwy
W
C
ovey L
n
Sun Valley
Sun Valley Pkwy
Copper Canyon
Golf Course
WR F
Festival WRF
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O
0
0.35
0.17
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 6.1 Sun City Festival 2024 Reclaimed Water System
CITY OF BUCKEYE
Legend
WR F
WRF
Reclaimed Water Main (inches)
2
12
16
18
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-7
6.4.1.2
Reclaimed Water Flows
Sun City Festival WRF produced approximately 650 AF of reclaimed water in 2023. Table 6.2 summarizes
the historical annual reclaimed water volume produced by the Sun City Festival WRF from 2018 through
2022. The reclaimed water produced was mostly used for turf irrigation or discharged with no storage
credit. No information on reclaimed water allocation was available for 2023.
Table 6.2
Sun City Festival Historical Reclaimed Water Produced
Reclaimed Water Use
Historical Annual Volume (AF)
2018
2019
2020
2021
2022
Turf Irrigation
214
172
277
294
251
Discharged without Benefit 96
156
133
140
264
Total
310
328
410
434
515
Reclaimed water production estimates are based on the City's historical wastewater flow records.
Reclaimed water flow projections for Sun City Festival are summarized in Table 6.3. These flows are used
to plan the reclaimed water that can be beneficially used and to size infrastructure. The Sun City Festival
reclaimed water projections are based on the phasing of future developments over a 15-year period
(2030, 2035, 2040).
Table 6.3
Sun City Festival Projected Reclaimed Water Flow
Flow (gpm/AFY)
2024
2030
2035
2040
Average Flow
570/920
790/1,270
810/1,310
870/1,400
Maximum Month Average Daily Flow
670/1,080
920/1,480
950/1,500
1,020/1,650
6.4.1.3
Reclaimed Water Strategy
The purpose of the USF being constructed in Sun City Festival development is to obtain LTSCs from
reclaimed water production. The USF can also be used to recharge CAP water from the City's CAP
allocation, the City's NIA water allocation, Harquahala groundwater, or other supplies the City might
acquire and deliver to the USF. The USF spreading basins will be constructed as reclaimed water flows
increase throughout the planning periods. Reclaimed water alone will not be sufficient to use the full
permitted capacity by 2040.
As shown in Figure 6.2, the USF would provide enough capacity through 2040. Table 6.4 presents the
capacity requirements for different water types for each planning period. The capacity of the USF will need
to be greater than the volume of the reclaimed and CAP water to be recharged.
Recharge capacity for water that comes from the CAP canal may require additional capacity. The City also
plans to have recharge capacity for NIA water at the recharge facility, so NIA water is included in the
capacity requirements. Future water supply from the Harquahala Groundwater Basin may require
additional recharge capacity at Sun City Festival.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-8
Table 6.4
Sun City Festival Projected Reclaimed Water Recharge Capacity Requirements
WRF/Source
Flow (gpm)
2030
2035
2040
Maximum Monthly Production
920
950
1,020
Winter Month Production(1)
920
940
1,010
CAP M&I(2)
42
42
42
CAP NIA(3)
651
651
651
Flow to Sun City Festival Development/Golf Course(4)
(270)
(300)
(390)
Required Recharge Capacity (gpm/AFY)(5)
1,613/2,602
1,633/2,2634
1,703/2,747
Notes:
(1) Winter month is used for capacity requirements to see if there is enough capacity when irrigation is not needed. The winter
month PF of 1.16 is based on the 2023 average monthly flow in the Sun City Festival WRF.
(2) Assumed the City's CAP M&I total water supply allocation is 42 gpm.
(3) Assumed the City's CAP NIA will only have 70 percent available of the total allocation of 2,786 AFY, as referenced in the
2020 Buckeye Water Resource Master Plan and 900 AFY of the allocation is delivered to EPCOR.
(4) Projected flow irrigation flow in future developments is based on irrigation growth rate in the last 5 years.
(5) The required recharge capacity is based on the winter month production.
Figure 6.2
Sun City Festival Reclaimed Water Capacity Evaluation through 2040
6.4.1.4
Infrastructure Projects
The USF is phased for the Sun City Festival reclaimed infrastructure projects through to the 2040 planning
period. The USF is planned to start construction in 2025. It is assumed that the required infrastructure for
the permitted design capacity of the USF is already funded. Table 6.5 summarizes the phasing of the USF.
Figure 6.3 presents the Sun City Festival infrastructure with the USF footprint area that is expected to be
needed for the buildout capacity of the system. The required capacity of the USF through 2040 is
4,500 AFY, and at buildout is 6,000 AFY. The acreage of the USF at the required capacities translates to
8.4 acres for 2040 and 11 acres for buildout.
0
500
1,000
1,500
2,000
2,500
2023
2025
2027
2029
2031
2033
2035
2037
2039
Flow
(gpm)
Date
Total Storage Capacity
Total Reclaimed Flow
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-9
Table 6.5
Sun City Festival Reclaimed Infrastructure Projects
Project
Number
Description
Justification
Diameter/Size
(inch/gpm/acre)
Length/Qty
(feet or no.)
Planning Triggers
(Year)
RW1
Construct the Sun City Festival USF with an initial
capacity of 2,000 gpm.
Fully use reclaimed water in
Sun City Festival.
2,000
1
End of 2025.
RW2
Construct a 6-mgd booster pump station and
pipeline to the Sun City Festival USF.
Deliver flow to the USF.
4,200
1
End of 2025.
RW3
Construct a 16-inch pipeline from Festival Ranch
WRF to the Sun City Festival USF.
Deliver flow to the USF.
16
18,000
End of 2025.
RW4
Construct a 16-inch pipeline from Beardsley
Parkway and Wagner Complex Drive to the CAP
canal along 275th Avenue.
Deliver flow from the CAP
canal.
16
1,700
Water from the CAP canal
needs to be recharged.
(2030)
N 291st Ave
e
Sun Valley Pkwy
W
Yukon D
r
Deser
t O
as
is B
lvd
W Covey Ln
N 291st Ave
Sun Valley Pkwy
N 251st Ave
N De
s
ert Vista Blvd
N Desert Vista Blvd
W
Morro
w D
r
W Vis
ta North
D
r
W M
cRae D
r
N 2
6
0
th
Ln
W Beardsley Pkwy
W
C
ovey L
n
Sun Valley
Sun Valley Pkwy
Copper Canyon
Golf Course
!ã
!ã
!ã
!ã
WR F
North Star
Ranch
Festival
Ranch
Sun Valley
Villages
I and II
RW2
RW1
RW4
RW3
Festival WRF
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O
0
0.35
0.17
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 6.3 Sun City Festival Recommended Reclaimed Water System Infrastructure
CITY OF BUCKEYE
Legend
WR F
WRF
!ã
Well
!ã
Proposed Well
Future USF
Reclaimed Water Main (inches)
2
12
16
18
Proposed Reclaimed Water Main
(inches)
16
Projected Development Phase
Existing
2030
2035
2040
Post 2040
Master Planned
Community
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-11
6.4.2
Floreo
The Floreo development is planned to be served by a package wastewater plant before transitioning to a
WRF around 2034. The actual timing may vary. The total capacity of the first phase of the WRF is planned
to be 1.2 mgd. The facility will be located off Cactus Road and Sun Valley Parkway on the east side of the
Hassayampa Wash.
6.4.2.1
Reclaimed Water Flows
The reclaimed water flow projections for Floreo are summarized in Table 6.6. These flows are used to plan
the reclaimed water that can be beneficially used and to size infrastructure. The Floreo flow projections
are based on the phasing of future developments over a 15-year period (2030, 2035, 2040). A reclaimed
water agreement with Teravalis was not available for the IWMP.
Table 6.6
Floreo Projected Reclaimed Water Production
Flow (gpm/AFY)
2030
2035
2040
Average Annual Flow
0
110/180
290/470
Maximum Month Average Daily Flow
0
130/210
340/550
6.4.2.2
Reclaimed Water Strategy
The recommended strategy for the Floreo reclaimed system is to construct a USF to provide reclaimed
storage capacity. If possible, the USF should be located within the area of influence of the Floreo potable
wells. A groundwater study will be needed to determine if a USF is viable within the area of influence of
the Floreo potable wells while also being close to the Wagner Wash which may have a good recharge
rate. A recharge facility is not a part of the current Floreo plan, but a recharge facility will ultimately be
needed for reclaimed water that is not used for irrigation.
As shown in Figure 6.4, the recommended initial USF capacity is sufficient through 2040. Table 6.7
presents the capacity requirements for the 2040 planning period.
Table 6.7
Floreo Projected Reclaimed Water Capacity Requirements
WRF
Flow (gpm)
2030
2035
2040
Maximum Monthly Production
40
130
340
Future USF Firm Capacity(1)(2)
540
540
540
Surplus (+)/Deficit (-)
500
410
200
Notes:
(1) Recharge capacity assumes an infiltration rate of 1.2 feet per day.
(2) Firm capacity is 50% of the total capacity.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-12
Figure 6.4
Floreo Reclaimed Water Capacity Evaluation through 2040
6.4.2.3
Infrastructure Projects
The following infrastructure projects are recommended, as shown in Figure 6.5 and described in Table 6.8.
The pipeline in the infrastructure projects is sized for 2040 reclaimed flows to the USF. Figure 6.3 presents
the Floreo infrastructure with the USF footprint area that is expected to be needed for the buildout
capacity of the system. The required capacity of the USF through 2040 is 540 AFY, and at buildout is
18,200 AFY. The acreage of the USF at the required capacities translates to 1.5 acres for 2040 and
41.5 acres for buildout.
0
100
200
300
400
500
600
2025
2027
2029
2031
2033
2035
2037
2039
Flow
(gpm)
Date
Total Storage Capacity
Total Reclaimed Flow
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-13
Table 6.8
Floreo Reclaimed Infrastructure Projects
Project
Number
Description
Justification
Diameter/Size
(inch/gpm/acre)
Length/Qty
(feet or no.)
Planning Triggers
(Year)
RW5
Construct a 12-inch reclaimed water pipeline
along Desert Oasis Boulevard to the future
recharge basins.
Deliver reclaimed water from the
Floreo WRF to the recharge basins.
12
5,370
Floreo WRF is constructed.
(2030)
RW6
Construct recharge basins off Wagner Wash
with a capacity of 540 gpm.
Increase capacity of reclaimed water
in Floreo.
540
1
Floreo WRF is constructed.
(2030)
RW7
Construct a 2-mgd pump station at Floreo WRF
to pump reclaimed water into the recharge
basins.
Pump reclaimed water to the
recharge basins.
1,400
1
Floreo WRF is constructed.
(2030)
W
C
act
u
s
Rd
W
C
a
c
t
u
s Rd
N
3
0
4
t
h
L
n
W
Indig
o
Way
S
W Teravalis Pkwy
Sun Valley Pkwy
Sun Valley Pkwy
!ã
!ã
!ã
!ã
!ã
!ã
!ã
WR F
Floreo at
Teravalis
Teravalis
Sun Valley
Villages
I and II
RW7
RW6
R
W5
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O
0
0.35
0.17
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 6.5 Floreo Recommended Reclaimed Water System Infrastructure
CITY OF BUCKEYE
Legend
WR F
Proposed WRF
!ã
Proposed Well
Future USF
Proposed Reclaimed Water Main
(inches)
12
Projected Development Phase
Existing
2030
2035
2040
Post 2040
Master Planned
Community
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-15
6.4.3
Tartesso
The Tartesso WRF has a current capacity of 1.2 mgd, with one planned expansion to bring the total
capacity of the facility to 2.5 mgd in 2030. The facility is located along West McDowell Road,
approximately 1 mile south of the Tonopah Salome Highway in WPA 2.
The reclaimed water produced by the Tartesso WRF is delivered to the Tartesso USF directly south of the
WRF. The storage facility has a permitted capacity of 20,163 AFY, but the existing capacity of the facility is
3,200 AFY.
The Tartesso service area does not have any reclaimed pipelines because the reclaimed water is sent to
the USF south from the WRF. A figure of the existing infrastructure is shown in Figure 6.6.
6.4.3.1
Reclaimed Water Flows
Tartesso WRF produced approximately 795 AF of reclaimed water in 2023. Table 6.9 summarizes the
historical average annual reclaimed water flow for Tartesso WRF from 2018 through 2022. No information
on reclaimed water allocation was available for 2023.
Table 6.9
Tartesso Historical Annual Flow
Reclaimed Water Use
Historical Average Annual Volume (AF)
2018
2019
2020
2021
2022
Recharged at USF
241
294
384
533
637
Discharged without Benefit
0
0
0
0
0
Total
241
294
384
533
637
The reclaimed water flow projections for Tartesso are summarized in Table 6.10. These flows are used to
plan the reclaimed water that can be beneficially used and to size infrastructure. The Tartesso flow
projections are based on the phasing of future developments over a 15-year period (2030, 2035, 2040).
Table 6.10
Tartesso Projected Reclaimed Water Flow
Flow (gpm/AFY)
2024
2030
2035
2040
Average Annual Flow
440/710
550/890
710/1,150
880/1,420
Maximum Month Average Daily Flow
520/840
640/1,030
840/1,350
1,030/1,660
W Lynwood St
311th Ave
W
McDowell
Rd
N 311th A
WR F
Tartesso WRF
Last Revised: October 31, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch04\
O
0
525
262.5
Feet
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 6.6 Tartesso 2024 Reclaimed Water System
CITY OF BUCKEYE
Legend
WR F
WRF
Existing USF
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-17
6.4.3.2
Reclaimed Water Strategy
The tested infiltration rate of the Tartesso USF is 3.5 feet per day. The current strategy for the Tartesso
reclaimed system is to increase the Tartesso recharge capacity up to the permitted capacity. The high
recharge rate means the recharge basins in this area can provide more capacity per acre than the other
USFs and is recommended over other reclaimed water management strategies.
ADWR policy states that the area of impact for USF is either 1 mile or a distance determined by
groundwater model analysis. The current location of the Tartesso USF is not within 1 mile of the existing
Tartesso development and wells. The total area of the Tartesso WRF is limited so any additional USF
constructed in the Tartesso service area should be in the Tartesso development within 1 mile of existing
wells.
The City is working to obtain an Alternative Designation of Assured Water Supply (ADAWS) for the
Tartesso area which will require 25 percent of reclaimed water to be cut to the aquifer for recharge and
another 25 percent of reclaimed water to be cut when the water is recovered at the Tartesso USF. As a
result, 50 percent of reclaimed water sent to the Tartesso USF can be recovered for potable use.
Obtaining an ADAWS may require pumping reclaimed water from Central Buckeye to the Tartesso USF. If
the City moves in this direction, the size of the recharge facility may need to increase.
As shown in Figure 6.7, the firm capacity of the USF is sufficient through 2039. Table 6.11 presents the
capacity requirements for the 2040 planning period without considering an ADAWS in the Tartesso area.
Table 6.11
Tartesso Projected Reclaimed Water Capacity Requirements
WRF
Flow (gpm)
2030
2035
2040
Maximum Monthly Production
640
840
1,030
Existing Recharge Basin Firm Capacity(1) 1,010
1,010
1,010
Future Recharge Basin Capacity
1,000
Surplus (+)/Deficit (-)
370
170
980
Notes:
(1) Existing recharge basin capacity is 50% of the total capacity.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-18
Figure 6.7
Tartesso Reclaimed Water Capacity Evaluation through 2040
6.4.3.3
Infrastructure Projects
The following infrastructure projects are recommended as shown in Figure 6.8 and described in
Table 6.12. Figure 6.3 presents the Tartesso infrastructure with the USF footprint area that is expected to
be needed for the buildout capacity of the system. The required capacity of the USF through 2040 is
1,800 AFY, and at buildout is 37,800 AFY. The acreage of the USF at the required capacities translates to
1.4 acres for 2040 and 30 acres for buildout.
0
500
1,000
1,500
2,000
2,500
2022
2024
2026
2028
2030
2032
2034
2036
2038
2040
Flow
(gpm)
Date
Total Storage Capacity
Total Reclaimed Flow
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-19
Table 6.12
Tartesso Reclaimed Infrastructure Projects
Project
Number
Description
Justification
Diameter/Size
(inch/gpm/acre)
Length/Qty
(feet or no.)
Planning Triggers
(Year)
RW8
Construct a 16-inch reclaimed water pipeline
from Tartesso WRF north to Tonopah Salome
Highway and along Thomas Road from Tonopah
Salome Highway to Johnson Road.
Connect future basin to
Tartesso WRF.
16
9,000
Tartesso maximum monthly reclaimed
flow exceeds capacity.
(2040)
RW9
Construct a 4-mgd pump station at Tartesso
WRF to pump reclaimed water into the future
recharge basin.
Pump reclaimed water to
the recharge basins.
2,800
1
Tartesso maximum monthly reclaimed
flow exceeds capacity.
(2040)
RW10
Construct USF with a capacity of 1,000 gpm
within the Tartesso wells area of influence.
Pump reclaimed water to
the recharge basins.
1,000
1
Tartesso maximum monthly reclaimed
flow exceeds capacity.
(2040)
W Indian School Rd
W Tonopah Salome Hwy
Earll Dr
N 311th Ave
315th Ave
N 313th A
v
e
W Osborn Rd
Thomas
Rd
N Johnson Rd
W T
a
rt
ess
o
P
kw
y
N
Broo
kly
n
Dr
N
Br
ooklyn
D
r
W Tonopah Salome Hwy
W Thomas Rd
W Thomas Rd
Bruner Rd Bruner R
d
N 3
03rd
A
ve
Ta
rt
e
ss
o
Pk
w
y
T
arte
sso Pkwy
N Bruner Rd
Sun Valley
Pkwy
W Tonopah Salome Hwy
W Bellview St
W
McDowell
Rd
W McDowell Rd
Ave
W
N 299th Ave
W India
W Mc
!ã
!ã
!ã
!ã
!ã
WR F
Tartesso
Tartesso West
Elianto
RW10
RW9
RW8
Tartesso WRF
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O
0
0.3
0.15
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 6.8 Tartesso Recommended Reclaimed Water System Infrastructure
CITY OF BUCKEYE
Legend
WR F
WRF
!ã
Well
Existing USF
Future USF
Proposed Reclaimed Water Main
(inches)
16
Projected Development Phase
Existing
2030
2035
2040
Post 2040
Master Planned
Community
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-21
6.4.4
Central
Central Buckeye has two WRFs, the Central WRF and the Sundance WRF.
The Central WRF has a current capacity of 4.5 mgd with two planned expansions to bring the total
capacity of the facility to 6 mgd in 2028 and 8 mgd in 2037. The facility is located on 7th Street, south of
Beloat Road in WPA 4B. The Central WRF pumps a limited amount of reclaimed water for irrigation and to
the RID Canal for recharge. The current pump capacity of the Central WRF limits the amount of reclaimed
water that can be sent to the RID Canal. Reclaimed water that is not used for irrigation or delivered to the
RID Canal is delivered to the Arlington Canal, where the City does not receive LTSCs. The Central WRF has
a pump station equipped with four pumps with a total capacity of 1,400 gpm. The pumps do not provide
the head to deliver the design flow to the RID Canal and the pipe is undersized to deliver the full
reclaimed water flow. The reclaimed water pump station does deliver water to the Earl Edgar Park, the
Buckeye Elementary School, and a firefighting training facility. This reclaimed water delivery system is not
planned for expansion, other than increasing the capacity to deliver reclaimed water to the RID canal.
The Sundance WRF has a current capacity of 3.6 mgd with one planned expansion to bring the total
capacity of the facility to 6 mgd. The facility is located north of RID Canal and east of Dean Road in
WPA 4A. The Sundance WRF has two pump stations. The first pump station is equipped with two pumps
for a total design capacity of 2,000 gpm which is used to irrigate the Sundance Golf Course and three
schools. A second pump station with three pumps for a total design capacity of 7,500 gpm delivers
reclaimed water to the RID Canal. The reclaimed water system is being expanded to include Sundance
Park by running a main to the pond in the park where water is taken for irrigation. The Tract A well site is
a former potable water site that is currently not in use. The Tract A site has a storage tank that can
potentially be used on this reclaimed system to supply reclaimed water to a proposed ASR well at the
same site. The storage tank can be filled with excess reclaimed water when the demand for irrigation is
low. The site is a potential location for a future ASR well that can be used to recharge reclaimed water
when irrigation demand is low. Other than Sundance Park, this reclaimed water system is not planned for
further expansion. The Sundance WRF can provide enough reclaimed water for this reclaimed water
distribution system. The Sundance WRF will be receiving some wastewater flows from EPCOR so the
reclaimed water flows will be higher doe to this additional wastewater flow.
The City has a long-term agreement with the RID to discharge up to 5,000 AFY of reclaimed water into the
RID Canal. As the RID canal is a GSF, the City obtains LTSCs by delivering reclaimed water to the canal.
This method is the least expensive way for the City to obtain LTSCs so as the City grows to deliver
reclaimed water up to the agreed limit, the City should pursue increasing the limit if possible.
The City will need additional capacity beyond the RID canal GSF to obtain reclaimed water LTSCs.
Spreading basins are the next most economical way to obtain LTSCs but recharging reclaimed water to
the aquifer is not allowed south of the RID canal because of the high water table. Spreading basins are
also not allowed within 5 miles of the Buckeye municipal airport to avoid conflicts between waterfowl and
airplanes. The remaining land area north of the RID canal and south of I-10 is likely planned for
development. Therefore, ASR wells are planned for recharge.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-22
ASR wells can be used to recover water from the aquifer that can be treated for potable use, and
recovering water helps to maintain the aquifer recharge capacity. As a minimum, ASR wells need to be
operated periodically to flush the aquifer and well packing to maintain the recharge capacity. Operation of
the ASR wells needs to be coordinated with potable water recovery. The Central and Sundance WRF
effluent has high TDS levels and the aquifer contains arsenic so treatment is likely required for
groundwater recovered from ASR wells if this water is to be used for potable use.
The reclaimed water transmission system consists of approximately 17.5 miles of reclaimed water mains
ranging in size from 2 to 18 inches in diameter. The existing reclaimed water mains are summarized in
Table 6.13. A figure of the existing infrastructure is shown in Figure 6.9.
Table 6.13
Central Buckeye Reclaimed Water Pipeline Summary
Diameter (inches)
Length (miles)
Percentage
Central WRF Basin
6
0.01
0%
8
0.3
4%
12
6.0
87%
21
0.2
3%
Unknown
0.4
6%
Total
6.9
Sundance WRF Basin
6
0.1
1%
8
0.5
5%
10
0.3
3%
12
8.8
83%
Unknown
0.9
8%
Total
10.6
10
Palo Verde
10
Sundance Golf
Club
Gila River
85
10
Robbins Butte
Wildlife Area
Valencia
Allenville
Conger
Buckeye
303
10
10
Gila R
Liberty
WR F
WR F
U
T
U
T
U
T
U
T
Beloat Rd
Baseline Rd
Southern Ave
Broadway Rd
Lower
Buckeye Rd
Yuma Rd
Van Buren St
McDowell Rd
195th Ave
Airport Rd
Dean Rd
Rainbow Rd
Watson Rd
Apache Rd
Miller Rd
Rooks Rd
Oglesby Rd
Turner Rd
Wilson Ave
Palo Verde Rd
Bruner Rd
Johnson Rd
RID Canal
Buckeye Canal
Central WRF
Sundance WRF
Earl
Edgar
Park
Buckeye
Elementary
Sundance Park
Sundance Golf Course
Youngker
High School
Inca
Elementary
School
Sundance
Elementary
School
Tract A
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O
0
1
0.5
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 6.9 Central Buckeye 2024 Reclaimed Water Infrastructure
CITY OF BUCKEYE
Legend
WR F
WRF
Reclaimed Water Users
U
T
Storage Tank
Canal
Reclaimed Water Main (inches)
6
8
10
12
20
21
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-24
6.4.4.1
Reclaimed Water Flows
Central and Sundance WRFs produced approximately 4,960 AF of reclaimed water in 2023. Table 6.14
summarizes the historical average annual reclaimed water flow for Central and Sundance WRFs from 2018
through 2022. The reclaimed water produced was mostly sent to RID or Arlington Canals. No information
on reclaimed water allocation was available for 2023.
Table 6.14
Central Buckeye Historical Annual Flow
Reclaimed Water Use
Historical Average Annual Volume (AF)
2018
2019
2020
2021
2022
Recharge to RID
810
1,398
1,250
1,300
1,300
Discharge to Buckeye Water
Conservation and Drainage District
Canal
0
0
21
31
21
Delivered to Arlington Canal
1,764
1,411
1,687
2,402
2,563
Sundance Golf Course
494
480
537
502
502
Schools
0
0
0
0
188
Earl Edgar Park
60
59
61
47
50
Total
3,128
3,348
3,556
4,282
4,624
Reclaimed water production is assumed to be 92 percent of wastewater flow for the Sundance and future
WRF 3 and WRF 4. The reclaimed water to wastewater flow for the Central WRF is closer to 0.85.
The reclaimed water flow projections analysis is split between East Central Buckeye and West Central
Buckeye. East Central Buckeye is the service area east of SR 85 and consists of WRF Basins 1, 2, and 4.
West Central Buckeye is the service area west of SR 85 and consists of WRF Basin 3. Figure 6.10 presents
the future WRF basins in Central Buckeye. The flows for east and west Central Buckeye are summarized in
Table 6.15.
These flows are used to plan the reclaimed water that can be beneficially used and to size infrastructure.
The flow projections are based on the phasing of future developments over a 15-year period (2030, 2035,
2040).
Table 6.15
Central Buckeye Projected Reclaimed Water Flow
Location
Flow (gpm/AFY)
2024
2030
2035
2040
East Central
Buckeye
Average Annual
Flow
3,430/5,530
4,510/7,270
4,940/7,970
5,300/8,550
Maximum Month
Average Daily Flow
4,010/6,470
5,270/8,500
5,770/9,310
6,200/10,000
West Central
Buckeye
Average Annual
Flow
0/0
590 950
910/1,470
1,350/2,180
Maximum Month
Average Daily Flow
0/0
690/1,110
1,060/1,710
1,580/2,550
10
Hassayampa
River
Dixie
Hassayampa
Arlington
Palo Verde
10
Sundance Golf
Club
Raven Golf Club
at Verrado
Skyline
Regional Park
Gila River
85
10
Robbins Butte
Wildlife Area
Valencia
Allenville
Conger
Buckeye
10
10
10
McMicken
Gila River
P
Liberty
WR F
WR F
WR F
WR F
Beloat Rd
Baseline Rd
Southern Ave
Broadway Rd
Lower
Buckeye Rd
Yuma Rd
Van Buren St
McDowell Rd
Thomas Rd
Indian
School Rd
Camelback Rd
Bethany
Home Rd
195th Ave
Airport Rd
Dean Rd
Rainbow Rd
Watson Rd
Apache Rd
Miller Rd
Rooks Rd
Oglesby Rd
Turner Rd
Wilson Ave
Palo
Verde Rd
Bruner Rd
Johnson Rd
Perryville Rd
Central WRF
Sundance WRF
4
3
2
1
WRF 3
WRF 4/ Grand
View WRF
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O
0
1.5
0.75
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 6.10 Central Buckeye Planned Wastewater Collection Basins
CITY OF BUCKEYE
Legend
Collection Basins
1
2
3
4
WR F
WRF
WR F
Proposed WRF
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-26
6.4.4.2
Reclaimed Water Strategy
East Central Buckeye
The priority for reclaimed water in Central Buckeye is to deliver to the RID Canal for LTSCs followed by
irrigation. Most of the Central WRF reclaimed water production will be pumped to the RID canal while
most of the Sundance WRF reclaimed water production will be pumped to irrigation. If the reclaimed
water from the WRFs exceeds the flow that can be delivered to the RID Canal, then ASR wells may need to
be constructed.
The RID Canal is permitted as a GSF, so the City receives LTSCs for reclaimed water delivered to the RID
Canal. Central WRF sends most of its reclaimed water to the Arlington Canal, which does not provide
LTSCs. Recommended improvements in Central Buckeye are to deliver reclaimed water to the RID Canal or
ASR wells for recharge. Those improvements include increasing the capacity of the pump station at the
Central WRF and increasing the capacity of the pipeline to the RID Canal.
The Central WRF reclaimed water can be fully used by constructing a 24-inch diameter pipeline from the
Central WRF along Beloat Road and along Dean Road to the Buckeye Canal where it would be connected
to an existing 20-inch pipe going north to the RID canal. The Central WRF pump station would need to be
replaced with a new pump station with a firm capacity of 4,800 gpm.
The two existing irrigation pumps at the Sundance WRF do not provide sufficient head to deliver peak
flows to irrigation, so both pumps in operation are necessary just to satisfy irrigation demands. The other
pumps at the pump station are used to send reclaimed water to the RID Canal. A recommended
improvement would be to replace the irrigation pumps at the Sundance WRF pump station with larger
pumps that can deliver 1,500 gpm flows to irrigation with the firm pump station capacity.
The City should construct ASR wells in Central Buckeye if the current exchange agreement with the RID
Canal cannot be expanded. The City has expressed concerns about high TDS levels at the Central and
Sundance WRFs, so treatment improvements should be implemented if ASR wells planned for potable
use. Two options have been considered for ASR well locations. Option 1 East includes an ASR wellfield on
Yuma Road and Verrado Way by the abandoned Goodyear Luke Auxiliary Satellite Airfield. Another ASR
well can be constructed on the Tract A storage tank site. Option 2 East consists of an ASR wellfield farther
west between Youngker High School and SR 85 along Lower Buckeye Road.
The benefits of Option 1 East are that the infrastructure requirements are lower because less pipe is
required and the ASR wells would be in proximity to the area of influence of the existing wells.
Alternatively, if the high TDS levels of reclaimed water by the potable wells are problematic, Option 2
would be preferable.
Table 6.16 presents the existing reclaimed water capacity of East Central Buckeye and the required
additional capacity needed by 2040. Figure 6.11 shows that the flow into the Arlington Canal should
decrease in the next five years as it does not provide LTSC and be moved to the RID Canal until the
5,000 AFY limit is reached. The ASR wells will provide additional capacity from 2030 through 2040.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-27
Table 6.16
East Central Buckeye Projected Reclaimed Water Flows
Combined Central and Sundance WRF
Reclaimed Water Deliveries
Flow (gpm)
2030
2035
2040
Maximum Monthly Production
5,270
5,770
6,200
Winter Month Production(1)
5,230
5,720
6,150
Flow to RID Canal
3,100
3,100
3,100
Flow to Irrigation
556
556
556
Planned ASR Well Capacity(2)
680
2,730
2,730
Surplus (+)/Deficit (-)(3)
(1,450)
110
(320)
Notes:
(1) Winter month is used for capacity requirements to see if there is enough capacity when irrigation is not needed. The winter
month PF of 1.10 is based on the 2023 average monthly flow in Central WRF.
(2) The capacity of an individual ASR well is assumed to be 1 mgd (1,100 AFY).
(3) The surplus/deficit value is based on the winter month production. A capacity deficit will be offset by delivering reclaimed
water to the Arlington Canal for no LTSC.
Figure 6.11 East Central Buckeye Reclaimed Water Recharge Facility Capacity through 2040
West Central Buckeye
Two options were evaluated for future reclaimed water infrastructure West of SR 85 for reclaimed water
coming from the Cipriani wastewater package plant and the future WRF 3. Option 1 West consists of ASR
wells for reclaimed water recharge. The ASR wells would be located either along Johnson Road in the
Cipriani Development or be located east of Buckeye Municipal Airport along Palo Verde Road.
Option 2 West consists of constructing a reclaimed water pipeline along Johnson Road to pump north to
the Tartesso USF. A groundwater study and cost evaluation will be needed to determine the option that
will be most beneficial for the City.
0
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
Flow
(gpm)
Date
ASR Wells
RID Canal
To Irrigation
Arlington Canal
Total Reclaimed Flow
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-28
Table 6.17 presents the required future reclaimed water recharge capacity for West Central Buckeye by 2040.
Figure 6.12 shows that ASR well capacity expansion is required when WRF 3 is constructed and in 2038.
Table 6.17
West Central Buckeye Projected Reclaimed Water Capacity Requirements
Reclaimed Water Flows
Flow (gpm)
2030
2035
2040
Maximum Monthly Production
690
1,060
1,580
ASR Well Firm Capacity(1)
0
1,360
2,050
RID Canal(2)
690
690
0
Surplus (+)/Deficit (-)
0
990
470
Notes:
(1) The capacity of an individual ASR well is assumed to be 1 mgd (1,100 AFY).
(2) Flow to the RID Canal would only be required in the 2030 period if the City constructs a package plant in the Cipriani
development.
Figure 6.12 West Central Buckeye Reclaimed Water Recharge Capacity through 2040
6.4.4.3
Infrastructure Projects
The following infrastructure projects are recommended, as shown in Figure 6.13 and described in
Table 6.18. The ASR well projects would need a groundwater study prior to their implementation.
Depending on whether the City chooses to use ASR wells for potable water recovery and treatment or
periodically flush the wells and dispose of the flushing water, additional capital projects may need to be
defined. If the City plans to recover water for potable use, then wellhead treatment, possibly with an RO
treatment process that generates a brine stream, would need to be constructed.
0
500
1,000
1,500
2,000
2,500
Flow
(gpm)
Date
ASR Wells
RID Canal
Total Reclaimed Flow
10
Hassayampa
River
Dixie
Hassayampa
ngton
Palo Verde
10
Sundance Golf
Club
Raven Golf Club
at Verrado
Regional Park
Gila River
85
10
Robbins Butte
Wildlife Area
Valencia
Allenville
Conger
Buckeye
10
10
McMicken
Gila Rive
Liberty
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
WR F
WR F
WWPP
WR F
U
T
U
T
U
T
U
T
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
!ã
Beloat Rd
Baseline Rd
Southern Ave
Broadway Rd
Lower
Buckeye Rd
Yuma Rd
Van Buren St
McDowell Rd
Thomas Rd
Indian
School Rd
Perryville Rd
195th Ave
Airport Rd
Dean Rd
Rainbow Rd
Watson Rd
Apache Rd
Miller Rd
Rooks Rd
Oglesby Rd
Turner Rd
Wilson Ave
Palo Verde Rd
Bruner Rd
Johnson Rd
RID Canal
Buckeye Canal
RW16,
RW17
RW23
RW19
RW21
RW15
RW28
RW30
RW32
RW25
RW18
RW33
RW29 RW31
RW12
RW20
RW22
RW13
RW24
RW34
RW14
RW26
RW27
RW11
Central WRF
Sundance WRF
Youngker
High School
Inca Elementary
School
Sundance Elementary
School
Tract A
Earl
Edgar
Park
Buckeye
Elementary
Sundance Park
Sundance
Golf Course
Last Revised: October 31, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch06\
O
0
1
0.5
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 6.13 Central Buckeye Option 1 Recommended Reclaimed Water System Infrastructure
CITY OF BUCKEYE
Legend
WR F
WRF
WR F
Proposed WRF
WWPP Proposed Package Plant
Reclaimed Water Users
U
T
Storage Tank
!ã
Well
!ã
Proposed Well
!ã
Proposed ASR Well
Canal
Reclaimed Water Main (inches)
6
8
10
12
20
21
Proposed Reclaimed Water Main
(inches)
8
12
16
24
Projected Development Phase
Existing
2030
2035
2040
Post 2040
Master Planned
Community
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-30
Table 6.18
Central Buckeye Reclaimed Infrastructure Projects
Project
Number
Option
Number
Description
Justification
Diameter/Size
(inch/gpm/
AFY/acre)
Length/Qty
(feet or no.)
Planning Triggers
(Year)
RW11
All
Construct a 24-inch reclaimed water pipeline from Central WRF along Beloat Road to Dean
Road and along Dean Road to the Buckeye Canal.
Increase capacity of reclaimed water able to be sent from
Central to RID canal.
24
35,800
Pump station at Central WRF has been upgraded.
(2030)
RW12
All
Replace the Central WRF pump station with a new one with a design flow of 4,800 gpm.
Increase capacity of reclaimed water able to be sent from
Central to RID canal.
4,800
1
As soon as can be constructed.
(2030)
RW13
All
Upgrade Sundance pump station to a firm capacity of 1,500 gpm.
Provide sufficient capacity and operational flexibility.
1,500
2
Maximum month reclaimed water production surpasses
existing reclaimed water capacity.
(2030)
RW14
1 East
Construct a 16-inch reclaimed water pipeline along the RID canal from Dean Road to 215th
Drive and along 215th Drive from the RID canal to Yuma Road.
Deliver reclaimed water to ASR wells.
16
6,400
Maximum month reclaimed water production exceeds flow
that can be delivered to the RID Canal.
(2030)
RW15
1 East
Construct one ASR well on 215th Drive and Yuma Road.
Expand reclaimed water capacity in Central Buckeye.
680
1
Maximum month reclaimed water production surpasses
existing reclaimed water recharge capacity.
(2030)
RW16
1 East
Construct one ASR wells at the Tract A storage tank.
Expand reclaimed water capacity in Central Buckeye.
680
1
Project RW13 is constructed
(2030)
RW17
1 East
Construct a 1-mgd pump station at the Tract A storage tank.
Deliver reclaimed water from the storage tank to the proposed
ASR well.
680
1
Project RW13 is constructed
(2030)
RW18
1 East
Construct a 16-inch reclaimed water pipeline along 215th Drive from Yuma Road to Hadley
Street.
Deliver reclaimed water to ASR well.
16
1,250
Maximum month reclaimed water production surpasses
existing reclaimed water recharge capacity.
(2035)
RW19
1 East
Construct one ASR well on 215th Drive and Hadley Street.
Expand reclaimed water capacity in Central Buckeye.
680
1
Maximum month reclaimed water production surpasses
existing reclaimed water recharge capacity.
(2035)
RW20
1 East
Construct a 16-inch reclaimed water pipeline along 215th Drive from Hadley Street to Morning
Glory Street.
Deliver reclaimed water to ASR well.
16
1,600
Maximum month reclaimed water production surpasses
existing reclaimed water recharge capacity.
(2035)
RW21
1 East
Construct one ASR well on 215th Drive and Morning Glory Street.
Expand reclaimed water capacity in Central Buckeye.
680
1
Maximum month reclaimed water production surpasses
existing reclaimed water recharge capacity.
(2035)
RW22
1 East
Construct a 12-inch reclaimed water pipeline along 215th Drive from Morning Glory Street to
Adam Street.
Deliver reclaimed water to ASR well.
12
1,600
Maximum month reclaimed water production surpasses
existing reclaimed water recharge capacity.
(2035)
RW23
1 East
Construct one ASR well on 215th Drive and Adam Street.
Expand reclaimed water capacity in Central Buckeye.
680
1
Maximum month reclaimed water production surpasses
existing reclaimed water recharge capacity.
(2035)
RW24
1 East
Construct a 12-inch reclaimed water pipeline along Adam Street from 215th Drive to Dean Road. Deliver reclaimed water to ASR well.
12
2,500
Maximum month reclaimed water production surpasses
existing reclaimed water recharge capacity.
(2035)
RW25
1 East
Construct one ASR well on Dean Road and Adam Street.
Expand reclaimed water capacity in Central Buckeye.
680
1
Maximum month reclaimed water production surpasses
existing reclaimed water recharge capacity.
(2035)
RW26
1 West
Construct an 8-inch pipeline from the Cipriani package plant to the RID Canal along Johnson
Road.
Deliver reclaimed water to the RID canal to obtain LTSCs.
8
4,600
Package plant is constructed.
(2030)
RW27
1 West
Construct a 16-inch reclaimed water pipeline from WRF 3 to Lower Buckeye Road along Palo
Verde Road.
Connect ASR Wells to WRF 3.
16
22,600
WRF 3 is constructed.
(2035)
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-31
Project
Number
Option
Number
Description
Justification
Diameter/Size
(inch/gpm/
AFY/acre)
Length/Qty
(feet or no.)
Planning Triggers
(Year)
RW28
1 West
Construct two ASR wells along Palo Verde Street from Lower Buckeye Road to Wilson Avenue. Increase reclaimed water recharge capacity.
680
2
WRF 3 is constructed.
(2035)
RW29
1 West
Construct a 12-inch reclaimed water pipeline along Palo Verde Road from Lower Buckeye Road
to Durango Street.
Connect ASR Wells to WRF 3.
12
1,300
Project RW26 is constructed.
(2035)
RW30
1 West
Construct one ASR wells along Palo Verde Street and Durango Street.
Increase reclaimed water recharge capacity.
680
1
Maximum month reclaimed water production surpasses
existing reclaimed water recharge capacity.
(2030)
RW31
1 West
Construct a 12-inch reclaimed water pipeline along Palo Verde Road from Wilson Avenue to
Durango Street.
Connect ASR Wells to WRF 3.
12
1,300
Maximum month reclaimed water production surpasses
existing reclaimed water recharge capacity.
(2030)
RW32
1 West
Construct one ASR wells along Palo Verde Street and Pima Street.
Increase reclaimed water recharge capacity.
680
1
Maximum month reclaimed water production surpasses
existing reclaimed water recharge capacity.
(2040)
RW33
1 West
Construct an 8-inch reclaimed water pipeline along Palo Verde Road from Durango Street to
Pima Street.
Increase reclaimed water recharge capacity.
8
1,300
Project RW21 is constructed.
(2040)
RW34
1 West
Construct a 4-mgd pump station at WRF 3 to pump reclaimed water to the ASR wells.
Deliver reclaimed water to ASR wells.
2,800
1
Completed when WRF 3 is constructed.
(2035)
RW35
2 East
Upsize the 12-inch reclaimed water pipeline from Sundance WRF to Younker High School to a
16-inch pipeline.
Deliver reclaimed water to ASR wells.
16
21,600
Maximum month reclaimed water production surpasses
existing reclaimed water capacity.
(2030)
RW36
2 East
Construct one ASR wells along Lower Buckeye Road and Watson Road.
Increase reclaimed water recharge capacity.
680
1
Maximum month reclaimed water production surpasses
existing reclaimed water recharge capacity.
(2030)
RW37
2 East
Construct one ASR well along Lower Buckeye Road and 237th Avenue.
Increase reclaimed water recharge capacity.
680
1
Maximum month reclaimed water production surpasses
existing reclaimed water recharge capacity.
(2030)
RW38
2 East
Construct one ASR well along Lower Buckeye Road and 239th Drive.
Increase reclaimed water recharge capacity.
680
1
Maximum month reclaimed water production surpasses
existing reclaimed water recharge capacity.
(2035)
RW39
2 East
Construct one ASR well along Lower Buckeye Road and 241st Drive.
Increase reclaimed water recharge capacity.
680
1
Maximum month reclaimed water production surpasses
existing reclaimed water recharge capacity.
(2035)
RW40
2 East
Construct one ASR well along Lower Buckeye Road and Apache Road.
Increase reclaimed water recharge capacity.
680
1
Maximum month reclaimed water production surpasses
existing reclaimed water recharge capacity.
(2035)
RW41
2 East
Construct one ASR well along Lower Buckeye Road and RID Service Road.
Increase reclaimed water recharge capacity.
680
1
Maximum month reclaimed water production surpasses
existing reclaimed water recharge capacity.
(2035)
RW42
2 West
Construct a 16-inch reclaimed water pipeline from WRF 3 along Palo Verde Road to Southern
Avenue and along Southern Avenue to the Cipriani Package Plant along Johnson Road.
Connect WRF 3 to Tartesso USF.
16
23,400
WRF 3 is constructed.
(2035)
RW43
2 West
Construct a 16-inch reclaimed water pipeline along Johnson Road from the Cipriani Package
Plant on Southern Avenue to McDowell Road and along McDowell Road to Tartesso WRF.
Connect WRF 3 to Tartesso USF.
16
34,400
WRF 3 is constructed.
(2035)
RW44
2 West
Expand the Tartesso USF by an additional 1,700 AFY.
Increase reclaimed water capacity.
1,700
1
WRF 3 is constructed.
(2035)
RW45
2 West
Construct a 4-mgd pump station at WRF 3 to pump reclaimed water to the Tartesso USF.
Provide reclaimed water pumping capacity.
2,800
1
WRF 3 is constructed.
(2035)
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
6-32
6.5
Conclusion and Recommendations
1. The Sun City Festival reclaimed water system should construct a USF with an initial flow capacity of
2,700 gpm. A 500 gpm USF expansion should be completed when the reclaimed water production
surpasses the initial capacity of the USF.
2. The City should construct a 16-inch pipeline from the Sun City Festival WRF to the CAP canal to
recharge reclaimed water.
3. The City should conduct a groundwater study near the Floreo development to confirm the viability of
USF by the Wagner Wash when the WRF is constructed. The initial flow capacity of the USF should be
540 gpm.
4. The City should conduct a groundwater study in the Tartesso reclaimed water system to confirm the
viability of constructing a USF closer to potable wells, possibly near the intersection of Thomas Road
and Johnson Road. The initial flow capacity of the USF should be 1,000 gpm.
5. The Central WRF reclaimed water pump station should be expanded to a firm capacity of 4,800 gpm
and construct a 24-inch diameter pipeline from the Central WRF to the Buckeye Canal so that LTSCs
can be obtained for the reclaimed water not used for irrigation.
6. The Sundance WRF pump station delivering water for irrigation should be replaced with a new
1,500 gpm pump station to provide capacity for water users.
7. The City should conduct a groundwater study to confirm the viability of constructing five ASR wells
each with a capacity of 1 mgd on Yuma Road and Verrado Way by the abandoned Goodyear Luke
Auxiliary Satellite Airfield. If favorable, this area is recommended for an ASR wellfield.
8. The City should conduct a groundwater study to confirm the viability of constructing four ASR wells
each with a capacity of 1 mgd along Palo Verde Road from Lower Buckeye Road to Pima Street. If
favorable, this area is recommended as an ASR wellfield.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
APPENDIX 2A
MASTER PLANNED DEVELOPMENT FLOWS
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2A-1
Note: In the tables below, the total demand in each water planning area includes demands for land areas where a
development has not been defined.
Table 2A.1
Master Planned Community Development Projected Flows
Water
Planning
Area
Master Planned Community
Name
Buildout Water
Demand
(gpd)
Percentage of
Water Demand in
the Water Planning
Area (%)
Buildout
Wastewater
Flow (gpd)
Buildout
Reclaimed
Water Flow
(gpd)
1
Sun City Festival
3,511,000
5.0%
1,969,000
1,811,000
1
Sun Valley Villages I and II
6,389,000
9.1%
3,584,000
3,297,000
1
Teravalis
42,151,000
59.7%
23,641,000
21,750,000
1
Floreo at Teravalis
3,504,000
5.0%
1,966,000
1,809,000
2
Elianto
4,590,000
12.8%
2,574,000
2,368,000
2
Montiere
630,000
1.8%
353,000
325,000
2
Sun Valley South
7,177,000
20.0%
4,025,000
3,703,000
2
Tartesso
10,213,000
28.5%
5,728,000
5,270,000
2
Tartesso West
4,167,000
11.6%
2,337,000
2,150,000
2
Valle Del Rio
431,000
1.2%
242,000
223,000
2
Valle Del Sol
522,000
1.5%
293,000
270,000
3
Cipriani
2,212,000
9.8%
1,241,000
1,142,000
3
Desert Creek
2,663,000
11.8%
1,494,000
1,374,000
3
Monte Verde
275,000
1.2%
154,000
142,000
3
Mountain View Business Center
161,000
0.7%
90,000
83,000
3
Silver Rock
1,981,000
8.8%
1,111,000
1,022,000
3
Sundance
3,724,000
16.5%
2,089,000
1,922,000
3
Westpark
663,000
2.9%
372,000
342,000
3
Westwind
924,000
4.1%
518,000
477,000
4A
Blue Horizons
8,000
0.0%
5,000
5,000
4A
Cipriani
3,000
0.0%
2,000
2,000
4A
Copper Falls
221,000
1.2%
124,000
114,000
4A
Henry Park
477,000
2.5%
268,000
247,000
4A
Southwest Ranch
939,000
4.9%
527,000
485,000
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2A-2
Table 2A.2
Area 1 Other Development Projected Flows
Development Name
Buildout
Water Demand
(gpd)
Percentage of
Water Demand in
the Water Planning
Area (%)
Buildout
Wastewater
Flow
(gpd)
Buildout
Reclaimed
Water
Flow (gpd)
Teravalis
42,151,000
59.72%
23,641,000 21,750,000
Festival Foothills Phase 1
133,000
0.19%
75,000
69,000
Festival Foothills Phase 2 Unit 15 and 17
47,000
0.07%
27,000
25,000
Festival Foothills Phase 2 Unit 19
32,000
0.05%
18,000
17,000
Festival Foothills Phase 2 Unit 21
10,000
0.01%
6,000
6,000
Festival Foothills Phase 2 Unit 23
19,000
0.03%
10,000
9,000
Festival Foothills Phase 3 Unit 25
32,000
0.05%
18,000
17,000
Festival Foothills Phase 3 Unit 27
36,000
0.05%
20,000
18,000
Festival Foothills Phase 3 Unit 29
37,000
0.05%
21,000
19,000
Festival Foothills Phase 3 Unit 31
36,000
0.05%
20,000
18,000
Festival Ranch
18,000
0.03%
8,000
7,000
Festival Ranch 1
29,000
0.04%
16,000
15,000
Festival Ranch 10
5,226,000
7.40%
2,931,000
2,697,000
Festival Ranch 12
9,000
0.01%
5,000
5,000
Festival Ranch 2
72,000
0.10%
41,000
38,000
Festival Ranch 3
586,000
0.83%
329,000
303,000
Festival Ranch 4
71,000
0.10%
40,000
37,000
Festival Ranch 5
15,000
0.02%
8,000
7,000
Festival Ranch 6
7,000
0.01%
4,000
4,000
Festival Ranch 7
41,000
0.06%
23,000
21,000
Festival Ranch 8
1,000
0.00%
300
0
Festival Ranch Planning Area 3 Parcel 33
40,000
0.06%
23,000
21,000
Festival Ranch Planning Area 3 Parcel 35
58,000
0.08%
33,000
30,000
Festival Ranch Planning Unit F of Planning Area 3
691,000
0.98%
388,000
357,000
North Star Ranch 1
2,000
0.00%
1,000
1,000
North Star Ranch 2
2,338,000
3.31%
1,311,000
1,206,000
North Star Ranch Phase 1
664,000
0.94%
373,000
343,000
Sun City Festival Amenity Center
15,000
0.02%
8,000
7,000
Sun City Festival L1-2
30,000
0.04%
17,000
16,000
Sun City Festival Parcel A1
12,000
0.02%
7,000
6,000
Sun City Festival Parcel A1 Phase 3
5,000
0.01%
3,000
3,000
Sun City Festival Parcel A1 Phase 4
10,000
0.01%
6,000
6,000
Sun City Festival Parcel AA1 Phase 1
34,000
0.05%
19,000
17,000
Sun City Festival Parcel AA1 Phase 2
41,000
0.06%
23,000
21,000
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2A-3
Development Name
Buildout
Water Demand
(gpd)
Percentage of
Water Demand in
the Water Planning
Area (%)
Buildout
Wastewater
Flow
(gpd)
Buildout
Reclaimed
Water
Flow (gpd)
Sun City Festival Parcel B1
124,000
0.18%
70,000
64,000
Sun City Festival Parcel C1
43,000
0.06%
24,000
22,000
Sun City Festival Parcel D1
45,000
0.06%
25,000
23,000
Sun City Festival Parcel DD1
10,000
0.01%
5,000
5,000
Sun City Festival Parcel H2 Phase 1
36,000
0.05%
20,000
18,000
Sun City Festival Parcel H2 Phase 2
9,000
0.01%
5,000
5,000
Sun City Festival Parcel HH1-1
40,000
0.06%
23,000
21,000
Sun City Festival Parcel HH1-2
21,000
0.03%
12,000
11,000
Sun City Festival Parcel HH1-3
20,000
0.03%
11,000
10,000
Sun City Festival Parcel HH1-4
40,000
0.06%
23,000
21,000
Sun City Festival Parcel HH1-5
21,000
0.03%
12,000
11,000
Sun City Festival Parcel I1
46,000
0.07%
26,000
24,000
Sun City Festival Parcel J1
50,000
0.07%
28,000
26,000
Sun City Festival Parcel J2
16,000
0.02%
9,000
8,000
Sun City Festival Parcel K1
38,000
0.05%
21,000
19,000
Sun City Festival Parcel L1
38,000
0.05%
21,000
19,000
Sun City Festival Parcel N1
33,000
0.05%
19,000
17,000
Sun City Festival Parcel O1 Phase 1
27,000
0.04%
15,000
14,000
Sun City Festival Parcel O1 Phase 2
28,000
0.04%
16,000
15,000
Sun City Festival Parcel P1
44,000
0.06%
25,000
23,000
Sun City Festival Parcel Q1 Phase 1
32,000
0.05%
18,000
17,000
Sun City Festival Parcel Q1 Phase 2
16,000
0.02%
9,000
8,000
Sun City Festival Parcel R1
44,000
0.06%
25,000
23,000
Sun City Festival Parcel S1
36,000
0.05%
20,000
18,000
Sun City Festival Parcel T1
33,000
0.05%
18,000
17,000
Sun City Festival Parcel U1
16,000
0.02%
9,000
8,000
Sun City Festival Parcel V1
17,000
0.02%
10,000
9,000
Sun City Festival Parcel Z1
16,000
0.02%
9,000
8,000
Sun City Festival Parcels E1 and F1
75,000
0.11%
42,000
39,000
Sun City Festival Parcels G1 and H1
71,000
0.10%
40,000
37,000
Sun City Festival Parcels M1 and R1
44,000
0.06%
25,000
23,000
Sun City Festival Planning Area 2 - Parcel A2
33,000
0.05%
19,000
17,000
Sun City Festival Planning Area 2 - Parcel B2
20,000
0.03%
11,000
10,000
Sun City Festival Planning Area 2 - Parcel C2
36,000
0.05%
20,000
18,000
Sun City Festival Planning Area 2 - Parcel D2
43,000
0.06%
24,000
22,000
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2A-4
Development Name
Buildout
Water Demand
(gpd)
Percentage of
Water Demand in
the Water Planning
Area (%)
Buildout
Wastewater
Flow
(gpd)
Buildout
Reclaimed
Water
Flow (gpd)
Sun City Festival Planning Area 2 - Parcel E2
9,000
0.01%
5,000
5,000
Sun City Festival Planning Area 2 - Parcel F2
52,000
0.07%
29,000
27,000
Sun City Festival Planning Area 2 - Parcel L2
12,000
0.02%
7,000
6,000
Sun City Festival Planning Area 2 - Parcel M2
4,000
0.01%
2,000
2,000
Sun City Festival Planning Area 2 - Parcels K2 and N2 18,000
0.03%
10,000
9,000
Sun Valley Area Plan
6,980,000
9.89%
3,915,000
3,602,000
Sun Valley Villages I and II
6,389,000
9.05%
3,584,000
3,297,000
Teravalis
2,499,000
3.54%
1,401,000
1,289,000
Trillium Community Center
13,000
0.02%
7,000
6,000
Trillium Community Park
64,000
0.09%
36,000
33,000
Trillium Village 3 Parcel 37
20,000
0.03%
11,000
10,000
Teravalis Village 3 Parcel 38
32,000
0.05%
18,000
17,000
Teravalis Village 3 Parcel 39
14,000
0.02%
8,000
7,000
Teravalis Village 3 Parcel 40
30,000
0.04%
17,000
16,000
Teravalis Village 3 Parcel 41
27,000
0.04%
15,000
14,000
Teravalis Village 3 Parcel 42
22,000
0.03%
13,000
12,000
Teravalis Village 3 Parcel 43
25,000
0.04%
14,000
13,000
Teravalis Village 3 Parcel 44
25,000
0.04%
14,000
13,000
Teravalis Village 3 Parcel 45
24,000
0.03%
13,000
12,000
Teravalis Village 3 Parcel 46
28,000
0.04%
16,000
15,000
Teravalis Village 3 Parcel 47
20,000
0.03%
11,000
10,000
Teravalis Village 3 Parcel 48
20,000
0.03%
11,000
10,000
Teravalis Village 3 Parcel 49
22,000
0.03%
12,000
11,000
Teravalis Village 3 Unit 1
397,000
0.56%
223,000
205,000
Teravalis Village 3 Unit 2
222,000
0.31%
125,000
115,000
Total
70,777,000
100%
39,699,300 36,522,000
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2A-5
Table 2A.3
Area 2 Other Development Projected Flows
Development Name
Buildout
Water Demand
(gpd)
Percentage of
Water Demand in
the Water Planning
Area (%)
Buildout
Wastewater
Flow
(gpd)
Buildout
Reclaimed
Water Flow
(gpd)
Buckeye Ranchos 2 (County)
37,000
0.10%
21,000
19,000
Buckeye Ranchos 3 (County)
20,000
0.06%
11,000
10,000
Elianto
4,590,000
12.80%
2,570,000
2,364,000
Hassayampa Ranches (County)
411,000
1.15%
230,000
212,000
Montana Vista (County)
16,000
0.04%
9,000
8,000
Montiere
630,000
1.76%
353,000
325,000
Sun Valley Area Plan
3,448,000
9.62%
1,931,000
1,777,000
Sun Valley South
7,177,000
20.02%
4,019,000
3,697,000
Sweetwater Estates
20,000
0.06%
11,000
10,000
Tartesso
10,213,000
28.48%
5,719,000
5,261,000
Tartesso Elementary School #2
12,000
0.03%
7,000
6,000
Tartesso Unit 1
233,000
0.65%
130,000
120,000
Tartesso Unit 2A
379,000
1.06%
212,000
195,000
Tartesso Unit 2B
414,000
1.15%
232,000
213,000
Tartesso West
4,167,000
11.62%
2,334,000
2,147,000
Tartesso West 1
645,000
1.80%
361,000
332,000
Tartesso West 2
50,000
0.14%
28,000
26,000
Tartesso West Unit 3A
962,000
2.68%
539,000
496,000
Valle Del Rio
431,000
1.20%
241,000
222,000
Valle Del Sol
522,000
1.46%
292,000
269,000
West Phoenix Estates (County)
254,000
0.71%
142,000
131,000
Total
34,631,000
96.58%
19,392,000
17,840,000
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2A-6
Table 2A.4
Area 3 Other Development Projected Flows
Development Name
Buildout
Water
Demand
(gpd)
Percentage of
Water Demand in
the Water
Planning Area (%)
Buildout
Wastewater
Flow
(gpd)
Buildout
Reclaimed
Water Flow
(gpd)
10 W Commerce Park
50,000
0.22%
28,000
26,000
5 Below
46,000
0.20%
26,000
24,000
Acacia Crossing
146,000
0.65%
82,000
75,000
Aldi's
3,000
0.01%
2,000
2,000
Anderson Parc
148,000
0.66%
83,000
76,000
Bentridge Phase 1
34,000
0.15%
19,000
17,000
Bentridge Phase 2
41,000
0.18%
23,000
21,000
Buckeye 252
90,000
0.40%
50,000
46,000
Buckeye Airport Zoning District1
762,000
3.38%
427,000
393,000
Buckeye Airport Zoning District 2
501,000
2.22%
281,000
259,000
Buckeye North
17,000
0.08%
10,000
9,000
Buckeye Parkway Center
12,000
0.05%
7,000
6,000
Buckeye Ranchos
85,000
0.38%
48,000
44,000
Buena Vista
158,000
0.70%
88,000
81,000
Burger King
2,000
0.01%
1,000
1,000
Christian Brothers Auto
1,000
0.00%
1,000
1,000
Cipriani 1
659,000
2.92%
369,000
339,000
Cipriani 2
1,550,000
6.87%
868,000
799,000
Coyote Ridge
160,000
0.71%
90,000
83,000
Crimson Canyon
28,000
0.12%
16,000
15,000
Deep Truck Wash
3,000
0.01%
2,000
2,000
Desert Creek
2,663,000
11.80%
1,491,000
1,372,000
Desert Hills Baptist Church Expansion and Parking Lot
2,000
0.01%
1,000
1,000
Desert Moon Estates Parcel 7
26,000
0.12%
15,000
14,000
Desert Moon Estates Parcel 8
23,000
0.10%
13,000
12,000
Desert Moon Estates Parcels 6A and 6B
20,000
0.09%
11,000
10,000
Desert Moon Estates Phase 1 Parcel 1
33,000
0.15%
18,000
17,000
Desert Moon Estates Phase 1 Parcel 2
44,000
0.19%
25,000
23,000
Desert Moon Estates Phase 2 Parcel 3
23,000
0.10%
13,000
12,000
Desert Moon Estates Phase 2 Parcel 4
29,000
0.13%
16,000
15,000
Desert Moon Estates Phase 2 Parcel 5
26,000
0.12%
15,000
14,000
Ed Key Charter School
10,000
0.04%
6,000
6,000
Empire SW
31,000
0.14%
17,000
16,000
Escobar Minor Land Division
1,000
0.00%
1,000
1,000
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2A-7
Development Name
Buildout
Water
Demand
(gpd)
Percentage of
Water Demand in
the Water
Planning Area (%)
Buildout
Wastewater
Flow
(gpd)
Buildout
Reclaimed
Water Flow
(gpd)
GL Logistics
2,000
0.01%
1,000
1,000
Greulichs Automotive
1,000
0.00%
1,000
1,000
Hancock Communities - White Tanks (Sundance Cove II) 120,000
0.53%
67,000
62,000
Homes at Susan Ranch
44,000
0.19%
25,000
23,000
Hopeville (County)
17,000
0.08%
10,000
9,000
Industrial Buildings at SE Verrado and Roosevelt
23,000
0.10%
13,000
12,000
John McCain Elementary School
18,000
0.08%
10,000
9,000
Loves Travel Stops and Country Stores
9,000
0.04%
5,000
5,000
Miller and Lower Buckeye MLD
16,000
0.07%
9,000
8,000
Miller Commerce Center
16,000
0.07%
9,000
8,000
Miller Crossings
22,000
0.10%
12,000
11,000
Miller Road Retail
1,000
0.00%
1,000
1,000
Monte Verde 1
373,000
1.65%
209,000
192,000
Monte Verde 2
157,000
0.70%
88,000
81,000
Monte Verde CMP Amendment
257,000
1.14%
144,000
132,000
Mountain View Business Center 1
0
0.00%
0
0
Mountain View Business Center 2
135,000
0.60%
76,000
70,000
Mountain View North Business Park
0
0.00%
0
0
Mountain View South
13,000
0.06%
7,000
6,000
Odyssey Institute
5,000
0.02%
3,000
3,000
Phoenix Skyline West 1
71,000
0.31%
40,000
37,000
Phoenix Skyline West 2
0
0.00%
0
0
Phoenix Skyline West 3 (County)
74,000
0.33%
41,000
38,000
Planet Fitness
5,000
0.02%
3,000
3,000
Quick Quack Car Wash
1,000
0.00%
1,000
1,000
SEC Yuma Rd and Dean Rd
19,000
0.08%
11,000
10,000
Sequoia High School
7,000
0.03%
4,000
4,000
Shadow Canyon
0
0.00%
0
0
Silver Rock
1,981,000
8.78%
1,109,000
1,020,000
Summit Community Church
23,000
0.10%
13,000
12,000
Sundance
3,724,000
16.50%
2,085,000
1,918,000
Sundance - Buckeye Senior Care Campus
0
0.00%
0
0
Sundance 1
75,000
0.33%
42,000
39,000
Sundance 2
0
0.00%
0
0
Sundance 11
304,000
1.35%
170,000
156,000
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2A-8
Development Name
Buildout
Water
Demand
(gpd)
Percentage of
Water Demand in
the Water
Planning Area (%)
Buildout
Wastewater
Flow
(gpd)
Buildout
Reclaimed
Water Flow
(gpd)
Sundance 13
41,000
0.18%
23,000
21,000
Sundance 3
44,000
0.19%
25,000
23,000
Sundance 4
25,000
0.11%
14,000
13,000
Sundance 5
7,000
0.03%
4,000
4,000
Sundance 6
58,000
0.26%
32,000
29,000
Sundance 7
212,000
0.94%
119,000
109,000
Sundance Business Center - 3 Minute Car Wash
2,000
0.01%
1,000
1,000
Sundance Business Center - Dutch Bros
1,000
0.00%
1,000
1,000
Sundance Business Center - My Place Hotel
2,000
0.01%
1,000
1,000
Sundance Business Center - Phase 1 Bldg 1
1,000
0.00%
1,000
1,000
Sundance Business Center - Phase 1 Bldg 3
1,000
0.00%
1,000
1,000
Sundance Business Center - Sundance Self Storage
4,000
0.02%
2,000
2,000
Sundance Business Center - Yuma and Watson Shops 2,000
0.01%
1,000
1,000
Sundance Corporate Plaza - overall site work
9,000
0.04%
5,000
5,000
Sundance Corporate Plaza - Shell building on Parcel 1
1,000
0.00%
1,000
1,000
Sundance Cove
118,000
0.52%
66,000
61,000
Sundance Parcel 10
8,000
0.04%
4,000
4,000
Sundance Parcel 12
19,000
0.08%
11,000
10,000
Sundance Parcel 13
31,000
0.14%
17,000
16,000
Sundance Parcel 14
26,000
0.12%
15,000
14,000
Sundance Parcel 15
70,000
0.31%
39,000
36,000
Sundance Parcel 16
40,000
0.18%
22,000
20,000
Sundance Parcel 17
35,000
0.16%
20,000
18,000
Sundance Parcel 18
33,000
0.15%
18,000
17,000
Sundance Parcel 19
72,000
0.32%
40,000
37,000
Sundance Parcel 2
94,000
0.42%
53,000
49,000
Sundance Parcel 20
32,000
0.14%
18,000
17,000
Sundance Parcel 20A
10,000
0.04%
6,000
6,000
Sundance Parcel 21
31,000
0.14%
17,000
16,000
Sundance Parcel 22
46,000
0.20%
26,000
24,000
Sundance Parcel 23A
47,000
0.21%
26,000
24,000
Sundance Parcel 23B
16,000
0.07%
9,000
8,000
Sundance Parcel 24
13,000
0.06%
7,000
6,000
Sundance Parcel 25
34,000
0.15%
19,000
17,000
Sundance Parcel 26
34,000
0.15%
19,000
17,000
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2A-9
Development Name
Buildout
Water
Demand
(gpd)
Percentage of
Water Demand in
the Water
Planning Area (%)
Buildout
Wastewater
Flow
(gpd)
Buildout
Reclaimed
Water Flow
(gpd)
Sundance Parcel 27
49,000
0.22%
27,000
25,000
Sundance Parcel 28A
31,000
0.14%
17,000
16,000
Sundance Parcel 28B
53,000
0.23%
30,000
28,000
Sundance Parcel 29
27,000
0.12%
15,000
14,000
Sundance Parcel 31
95,000
0.42%
53,000
49,000
Sundance Parcel 36
33,000
0.15%
18,000
17,000
Sundance Parcel 37A
47,000
0.21%
26,000
24,000
Sundance Parcel 37B
66,000
0.29%
37,000
34,000
Sundance Parcel 38
15,000
0.07%
8,000
7,000
Sundance Parcel 40
68,000
0.30%
38,000
35,000
Sundance Parcel 41
18,000
0.08%
10,000
9,000
Sundance Parcel 42
45,000
0.20%
25,000
23,000
Sundance Parcel 43 and 34B
67,000
0.30%
38,000
35,000
Sundance Parcel 45A
21,000
0.09%
12,000
11,000
Sundance Parcel 45B
12,000
0.05%
7,000
6,000
Sundance Parcel 45C
14,000
0.06%
8,000
7,000
Sundance Parcel 46A 46B
77,000
0.34%
43,000
40,000
Sundance Parcel 47
4,000
0.02%
2,000
2,000
Sundance Parcel 48
76,000
0.34%
43,000
40,000
Sundance Parcel 49A
25,000
0.11%
14,000
13,000
Sundance Parcels 32, 33, and 35
50,000
0.22%
28,000
26,000
Sundance Parcel 7
0
0.00%
0
0
Sundance Towne Center - Quik Trip
3,000
0.01%
2,000
2,000
Sundance Towne Center - The Shops on Parcel H
1,000
0.00%
1,000
1,000
Superstar Car Wash
1,000
0.00%
1,000
1,000
U-Haul
11,000
0.05%
6,000
6,000
Verrado and I-10 MLD
45,000
0.20%
25,000
23,000
Verrado Logistics Center
27,000
0.12%
15,000
14,000
Village at Sundance Phase 1 Parcel 3B
20,000
0.09%
11,000
10,000
Village at Sundance Phase 1 Parcel 4
40,000
0.18%
22,000
20,000
Village at Sundance Phase 1 Parcel 5
36,000
0.16%
20,000
18,000
Village at Sundance Phase 2 Parcel 1
38,000
0.17%
21,000
19,000
Village at Sundance Phase 2 Parcel 2
32,000
0.14%
18,000
17,000
Village at Sundance Phase 2 Parcel 3A
18,000
0.08%
10,000
9,000
Watson Estates
528,000
2.34%
296,000
272,000
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2A-10
Development Name
Buildout
Water
Demand
(gpd)
Percentage of
Water Demand in
the Water
Planning Area (%)
Buildout
Wastewater
Flow
(gpd)
Buildout
Reclaimed
Water Flow
(gpd)
West Mec Phase 3
5,000
0.02%
3,000
3,000
West Mec Phase 3B
5,000
0.02%
3,000
3,000
West Mec Phase 4
2,000
0.01%
1,000
1,000
Westpark 1
189,000
0.84%
106,000
98,000
Westpark 2
21,000
0.09%
12,000
11,000
Westpark 2.2 PrePlat
252,000
1.12%
141,000
130,000
WestPark 3
387,000
1.71%
217,000
200,000
Westpark Parcel 1
21,000
0.09%
12,000
11,000
Westpark Parcel 14
35,000
0.16%
20,000
18,000
Westpark Parcel 15N
19,000
0.08%
11,000
10,000
Westpark Parcel 15S
12,000
0.05%
7,000
6,000
Westpark Parcel 16N
23,000
0.10%
13,000
12,000
Westpark Parcel 16S
28,000
0.12%
16,000
15,000
Westpark Parcel 17N
44,000
0.19%
25,000
23,000
Westpark Parcel 17S
30,000
0.13%
17,000
16,000
Westpark Parcel 18S
45,000
0.20%
25,000
23,000
Westpark Parcel 2N
22,000
0.10%
12,000
11,000
Westpark Parcel 2S
16,000
0.07%
9,000
8,000
Westpark Parcel 3N
27,000
0.12%
15,000
14,000
Westpark Parcel 3S
22,000
0.10%
12,000
11,000
Westpark Parcel 4N
40,000
0.18%
22,000
20,000
Westpark Parcel 4S
27,000
0.12%
15,000
14,000
Westwind 1
182,000
0.81%
102,000
94,000
Westwind 2
741,000
3.28%
415,000
382,000
White Tanks Vista (County)
322,000
1.43%
180,000
166,000
Windmill Village
312,000
1.38%
175,000
161,000
Yuma and Apache Bungalows
101,000
0.45%
57,000
52,000
Total
20,782,000
92.08%
11,645,000
10,720,000
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2A-11
Table 2A.5
Area 4A Other Development Projected Flows
Development Name
Buildout
Water Demand
(gpd)
Percentage of
Water Demand
in the DAWS
Area (%)
Buildout
Wastewater
Flow
(gpd)
Buildout
Reclaimed
Water Flow
(gpd)
AAMCO
1,000
0.01%
1,000
1,000
Alder Farms
332,000
1.74%
186,000
171,000
Algodon Phase 2
50,000
0.26%
28,000
26,000
Algodon Phase 3
40,000
0.21%
22,000
20,000
Apache Farms
180,000
0.94%
101,000
93,000
AVALON
291,000
1.52%
163,000
150,000
Blue Hills
274,000
1.44%
153,000
141,000
Blue Horizons
8,000
0.04%
4,000
4,000
Broadway And Perryville
18,000
0.09%
10,000
9,000
Buckeye 320
190,000
1.00%
106,000
98,000
Buckeye Miller 60
142,000
0.74%
80,000
74,000
Buckeye Park
35,000
0.18%
20,000
18,000
Cardinal Capital Industrial Park
188,000
0.98%
105,000
97,000
Cardinal IG Plant Expansion
68,000
0.36%
38,000
35,000
Cipriani
3,000
0.02%
2,000
2,000
Copper Falls
292,000
1.53%
164,000
151,000
Cotton Meadows South
115,000
0.60%
64,000
59,000
Cottonwood
304,000
1.59%
170,000
156,000
Crystal Vista
193,000
1.01%
108,000
99,000
Crystal Vista - Offsite improvements
4,000
0.02%
2,000
2,000
Dove Cove Estates
196,000
1.03%
110,000
101,000
Estrella Vista
326,000
1.71%
183,000
168,000
Farallon
305,000
1.60%
171,000
157,000
Farallon Unit 1
105,000
0.55%
59,000
54,000
Farallon Unit 2
108,000
0.57%
60,000
55,000
Farallon Unit 3
92,000
0.48%
52,000
48,000
Filibertos
1,000
0.01%
1,000
1,000
Hayden Estates
135,000
0.71%
76,000
70,000
Henry Park
477,000
2.50%
267,000
246,000
Heritage West
502,000
2.63%
281,000
259,000
Legacy Trails
370,000
1.94%
207,000
190,000
Los Ranchitos De Los Conejos (County)
9,000
0.05%
5,000
5,000
Mayfield
333,000
1.74%
186,000
171,000
Mayfield Phase 1
65,000
0.34%
36,000
33,000
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2A-12
Development Name
Buildout
Water Demand
(gpd)
Percentage of
Water Demand
in the DAWS
Area (%)
Buildout
Wastewater
Flow
(gpd)
Buildout
Reclaimed
Water Flow
(gpd)
Miller Buckeye 80
87,000
0.46%
49,000
45,000
Miller Manor
162,000
0.85%
91,000
84,000
Miller Marketplace
15,000
0.08%
8,000
7,000
Miller Marketplace - AutoZone Store #5065
2,000
0.01%
1,000
1,000
Miller Park
58,000
0.30%
32,000
29,000
Monroe Ranch
82,000
0.43%
46,000
42,000
Montana Vista II
192,000
1.01%
108,000
99,000
Mountain View South
326,000
1.71%
183,000
168,000
Mystic Vista Phase 1
89,000
0.47%
50,000
46,000
Mystic Vista Phase 2
82,000
0.43%
46,000
42,000
Nesselrotte Place
4,000
0.02%
2,000
2,000
Northwood Park Estates Unit 1
13,000
0.07%
7,000
6,000
Northwood Park Estates Unit 2
20,000
0.10%
11,000
10,000
NWC SR85 & Baseline from RU-43 to Light Industrial
214,000
1.12%
120,000
110,000
Odyssey Institute
1,000
0.01%
1,000
1,000
Parker Fasteners Renovation
16,000
0.08%
9,000
8,000
Primrose Estates (County)
16,000
0.08%
9,000
8,000
Rainbow Ranch
185,000
0.97%
104,000
96,000
Rancho Vista
226,000
1.18%
127,000
117,000
Riata West Unit 1
132,000
0.69%
74,000
68,000
Riata West Unit 2
138,000
0.72%
77,000
71,000
Rooks & Broadway
59,000
0.31%
33,000
30,000
Roosevelt Citrus Acres 2
131,000
0.69%
73,000
67,000
Roosevelt Citrus Acres 3
314,000
1.65%
176,000
162,000
San Madera
360,000
1.89%
202,000
186,000
Shoppes At Miller Park
15,000
0.08%
8,000
7,000
Sonoran Vista Unit 1
43,000
0.23%
24,000
22,000
Sonoran Vista Unit 2
120,000
0.63%
67,000
62,000
Southern and Apache
90,000
0.47%
50,000
46,000
Southwest Ranch
939,000
4.92%
526,000
484,000
Sunset Point
248,000
1.30%
139,000
128,000
Sunset Vista
182,000
0.95%
102,000
94,000
The Homestead
309,000
1.62%
173,000
159,000
Turner 308
275,000
1.44%
154,000
142,000
Tyler Ranch Phase 1
8,000
0.04%
4,000
4,000
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2A-13
Development Name
Buildout
Water Demand
(gpd)
Percentage of
Water Demand
in the DAWS
Area (%)
Buildout
Wastewater
Flow
(gpd)
Buildout
Reclaimed
Water Flow
(gpd)
Tyler Ranch Phase 2
45,000
0.24%
25,000
23,000
Tyler Ranch Phase 3
40,000
0.21%
22,000
20,000
Valencia
182,000
0.95%
102,000
94,000
Valencia Homes
12,000
0.06%
7,000
6,000
Valencia Manor
27,000
0.14%
15,000
14,000
Ventana Ranch
608,000
3.19%
340,000
313,000
Village On Broadway
2,000
0.01%
1,000
1,000
Vista @ Buckeye
106,000
0.56%
59,000
54,000
Vista Bonita
191,000
1.00%
107,000
98,000
Vista Del Sol
164,000
0.86%
92,000
85,000
West Pointe Baptist Church
8,000
0.04%
4,000
4,000
White Tank Citrus TR Plat A (County)
17,000
0.09%
10,000
9,000
Total
12,307,000
64.48%
6,891,000
6,338,000
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2A-14
Table 2A.6
Area 4B Other Development Projected Flows
Development Name
Buildout
Water
Demand
(gpd)
Percentage of
Water Demand in
the Water Planning
Area (%)
Buildout
Wastewater
Flow
(gpd)
Buildout
Reclaimed
Water Flow
(gpd)
204 E Roosevelt Ave Replat
500
0.00%
300
300
703 E Monroe Residences (Apartments)
2,000
0.01%
1,000
1,000
726 E Monroe Ave Site Plan
400
0.00%
200
200
Allenville
150,000
1.04%
84,000
77,000
Amigos Auto Repair
600
0.00%
300
300
Angulo Residence
200
0.00%
100
100
Bella Vagare
152,000
1.05%
85,000
78,000
Buckeye 29
32,000
0.22%
18,000
17,000
Buckeye 62
107,800
0.75%
60,000
55,000
Buckeye Blk 1-3, 10-15
75,000
0.52%
42,000
39,000
Buckeye Industrial Rail Park / Project Alpha
163,200
1.13%
91,000
84,000
Buckeye Re-Plat Unit 1
5,000
0.03%
3,000
3,000
Buckeye Re-Plat Unit 2
3,000
0.02%
2,000
2,000
Camelot Condominiums
5,000
0.03%
3,000
3,000
Case IH Equipment
10,100
0.07%
6,000
6,000
Central Buckeye
100,000
0.69%
56,000
52,000
Children's 2011 LLC
30,900
0.21%
17,000
16,000
Clanton Avenue Rezone and Replat
1,000
0.01%
1,000
1,000
Clanton-Thayer
4,000
0.03%
2,000
2,000
Derosier Place
6,000
0.04%
3,000
3,000
Duncan Manor
1,800
0.01%
1,000
1,000
East Allenville
71,000
0.49%
40,000
37,000
East Sunland
1,800
0.01%
1,000
1,000
Elms Tract
7,000
0.05%
4,000
4,000
Encantada Estates
183,600
1.27%
103,000
95,000
Estrellas Garden
98,000
0.68%
55,000
51,000
George Tract
20,100
0.14%
11,000
10,000
Gerben Boschma Dairy Minor Subdivision
1,000
0.01%
1,000
1,000
Grier Ranch
208,900
1.44%
117,000
108,000
Ironwood Vista
34,000
0.24%
19,000
17,000
Kore Power
188,100
1.30%
105,000
97,000
MC-85 & Rooks Road Project Rezone
98,000
0.68%
55,000
51,000
MC85 and Shepards Trail
210,900
1.46%
118,000
109,000
Mountain View Estates
98,000
0.68%
55,000
51,000
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
2A-15
Development Name
Buildout
Water
Demand
(gpd)
Percentage of
Water Demand in
the Water Planning
Area (%)
Buildout
Wastewater
Flow
(gpd)
Buildout
Reclaimed
Water Flow
(gpd)
MURCO
7,000
0.05%
4,000
4,000
Narramore Estates
36,000
0.25%
20,000
18,000
Norte Vista
11,900
0.08%
7,000
6,000
Northern Addition
26,000
0.18%
15,000
14,000
Painted Rock
37,100
0.26%
21,000
19,000
Parkplace at Buckeye
162,000
1.12%
91,000
84,000
Parkside at Buckeye
8,600
0.06%
5,000
5,000
Parkview Manor
9,000
0.06%
5,000
5,000
Ragsdale-Simmons Re-Plat
900
0.01%
1,000
1,000
Rio Sendero
45,000
0.31%
25,000
23,000
Roers Multi-Family Homes
33,100
0.23%
19,000
17,000
Shepard Estates
29,000
0.20%
16,000
15,000
Snap Fitness
500
0.00%
300
300
Terravista Phase 1
49,000
0.34%
27,000
25,000
Terravista Phase 2
47,400
0.33%
27,000
25,000
The Reserve
157,000
1.09%
88,000
81,000
Vanity on 3rd Building Expansion
300
0.00%
200
200
Watson Addition
8,000
0.06%
4,000
4,000
White Fence Farms
35,800
0.25%
20,000
18,000
Wingate
172,000
1.19%
96,000
88,000
Wingate East
104,300
0.72%
58,000
53,000
Wurts Place
2,000
0.01%
1,000
1,000
Total
3,052,800
21.11%
1,710,400
1,579,400
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
APPENDIX 4A
WATER DISTRIBUTION SYSTEM MODEL
RESULTS
!ã
!ã
!ã
U
T"
=)
Zone 7
Zone 6
Sun City
Festival
Well #2
Sun City
Festival
Well #1
Sun City
Festival
Well #3
Last Revised: October 30, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch02\
O
0
0.25
0.13
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: City of Buckeye.
Figure 4A.1 Sun City Festival Peak Hour Demand Pressures and Velocities
CITY OF BUCKEYE
Legend
U
T"
=)
Storage & Booster
Pump
!ã
Well
Peak Hour Demand Junction
Pressures (psi)
< 50
50 - 80
80 - 110
> 110
Peak Hour Demand Pipe
Velocities (ft/s)
0 - 1
1 - 2.5
2.5 - 5
> 5
Pressure Zones
6
7
2025 BUCKEYE INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
!ã
!ã
!ã
U
T"
=)
Zone 3
Zone 4
Tartesso
Well #1
Tartesso
Well #2
Tartesso
Well #3
Last Revised: October 30, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch02\
O
0
1,000
500
Feet
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: City of Buckeye.
Figure 4A.2 Tartesso Peak Hour Demand Pressures and Velocities
CITY OF BUCKEYE
Legend
U
T"
=)
Storage & Booster
Pump
!ã
Well
Peak Hour Demand Junction
Pressures (psi)
< 50
50 - 80
80 - 110
> 110
Peak Hour Demand Pipe
Velocities (ft/s)
0 - 1
1 - 2.5
2.5 - 5
> 5
Pressure Zones
3
4
2025 BUCKEYE INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
!ã
!ã
!ã
U
T"
=)
Zone 3
Zone 4
Tartesso
Well #1
Tartesso
Well #2
Tartesso
Well #3
Last Revised: October 31, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch02\
O
0
1,000
500
Feet
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: City of Buckeye.
Figure 4A.3 Tartesso Peak Hour Demand Pressures and Velocities with Proposed PRVs
CITY OF BUCKEYE
Legend
U
T"
=)
Storage & Booster
Pump
!ã
Well
Peak Hour Demand Junction
Pressures (psi)
< 50
50 - 80
80 - 110
> 110
Peak Hour Demand Pipe
Velocities (ft/s)
0 - 1
1 - 2.5
2.5 - 5
> 5
Pressure Zones
3
4
2025 BUCKEYE INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
!ã
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T"
=)
U
T"
=)
U
T"
=)
U
T"
=)
U
T"
=)
U
T"
=)
U
T"
=)
U
T"
=)
3
Q
3
Q
3
Q
Beloat Rd
Baseline Rd
Southern Ave
Broadway Rd
Lower
Buckeye Rd
Yuma Rd
Van Buren St
McDowell Rd
Thomas Rd
Indian
School Rd
Perryville Rd
195th Ave
Airport Rd
Dean Rd
Rainbow Rd
Watson Rd
Apache Rd
Miller Rd
Rooks Rd
Oglesby Rd
Turner Rd
Wilson Ave
Palo Verde Rd
Bruner Rd
Johnson Rd
Zone 3
Zone 2
Zone 1
Zone 3
Zone 4
Sundance
North Airport
Jackie A.
Meck WC
Last Revised: October 30, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch02\
O
0
1
0.5
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: City of Buckeye.
Figure 4A.4 Central Buckeye Peak Hour Demand Pressures and Velocities
CITY OF BUCKEYE
Legend
3
Q
Water Campus or WTP
U
T"
=)
Storage & Booster
Pump
!ã
Well
Peak Hour Demand Junction
Pressures (psi)
< 50
50 - 80
80 - 110
> 110
Peak Hour Demand Pipe
Velocities (ft/s)
0 - 1
1 - 2.5
2.5 - 5
> 5
Pressure Zones
1
2
3
4
2025 BUCKEYE INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
APPENDIX 5A
WASTEWATER COLLECTION SYSTEM
MODEL RESULTS
N 291st Ave
N
29
6
t
h
A
v
e
Sun Valley Pkw
y
W
Yukon D
r
Deser
t O
as
is B
lvd
W
Covey Ln
N 291st Ave
Sun Valley Pkwy
N 2
N 251st Ave
N De
s
ert Vista Blvd
N Desert Vista Blvd
W
Morro
w D
r
W Vis
ta North
Dr
W M
cRae
D
r
N 2
6
0
th
Ln
W
C
ovey L
n
Sun Valley Pkw
Sun Valley Pkwy
Copper Canyon
Golf Course
WR F
Festival WRF
Last Revised: October 31, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch05\
O
0
0.35
0.17
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5A.1 Sun City Festival 2040 Peak Flow Pipeline Capacity Model Results
CITY OF BUCKEYE
Legend
WR F
WRF
Max d/D
> 0.25
0.25 - 0.50
0.50 - 0.82
> 0.82
W
C
act
u
s
Rd
W
C
a
c
t
u
s
Rd
N
3
0
4
t
h
L
n
W
Indig
o
Way
S
W Teravalis Pkwy
Sun Valley Pkwy
n Valley Pkwy
WR F
Last Revised: October 31, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch05\
O
0
0.25
0.13
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5A.2 Floreo 2040 Peak Flow Pipeline Capacity Model Results
CITY OF BUCKEYE
Legend
WR F
WRF
Max d/D
< 0.25
0.25 - 0.50
0.50 - 0.82
> 0.82
N 3
N
3
1
5
t
h A
v
e
W
I
ndi
an S
c
hool
Rd
W Indian School Rd
W Tonopah Salome Hwy
Earll Dr
N 311th Ave
315th Ave
W Osborn Rd
Thomas
Rd
N Johnson Rd
W Camelback Rd
B
eth
any Hom
e
R
d
Bethany Home Rd
Sun Valley Pkwy
W Ta
rt
e
ss
o
P
kwy
N
Br
oo
kl
yn
Dr
N
Br
o
okly
n
Dr
W Tonopah Salome Hwy
W Thomas Rd
W Thomas Rd
Bruner Rd
N
30
3rd
A
ve
Tart
e
s
s
o
P
kwy
T
a
r
tes
so Pkwy
N Bruner Rd
Sun Valle
y Pkwy
W Tonopah Salome Hw
y
W M
cDowe
ll Rd
W McDowell Rd
T
u
rner R
d
W Indian School Rd
N 277th Ave
Power Line Rd
W McDowell Rd
W McDowell Rd
WR F
Tartesso WRF
Last Revised: October 31, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch05\
O
0
0.5
0.25
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5A.3 Tartesso 2040 Peak Flow Pipeline Capacity Model Results
CITY OF BUCKEYE
Legend
WR F
WRF
Max d/D
> 0.25
0.25 - 0.50
0.50 - 0.82
> 0.82
10
Hassayampa
River
Dixie
Hassayampa
Arlington
Palo Verde
10
Sundance Golf
Club
Raven Golf Club
at Verrado
Skyline
Regional Park
Gila River
85
10
Robbins Butte
Wildlife Area
Valencia
Allenville
Conger
Buckeye
10
10
McMicken
Gila River
Liberty
WR F
"
=)
"
=)
"
=)
WR F
"
=)
"
=)
"
=)
"
=)
"
=)
"
=)
"
=)
"
=)
"
=)
"
=)
WR F
"
=)
Beloat Rd
Baseline Rd
Southern Ave
Broadway Rd
Lower
Buckeye Rd
Yuma Rd
Van Buren St
McDowell Rd
Thomas Rd
Indian
School Rd
Camelback Rd
Bethany
Home Rd
Perryville Rd
195th Ave
Airport Rd
Dean Rd
Rainbow
Rd
Watson Rd
Apache Rd
Miller Rd
Rooks Rd
Oglesby
Rd
Turner Rd
Wilson Ave
Palo
Verde Rd
Bruner Rd
Johnson
Rd
Central WRF
Sundance WRF
Last Revised: October 31, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch05\
O
0
1.5
0.75
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5A.4 Central Buckeye 2040 Peak Flow Pipeline Capacity Model Results
CITY OF BUCKEYE
Legend
Force Main
"
=)
Lift Station
WR F
WRF
Max d/D
> 0.25
0.25 - 0.50
0.50 - 0.82
> 0.82
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
APPENDIX 5B
WASTEWATER COLLECTION SYSTEM
CAPACITY AT BUILDOUT
Will be delivered as a separate document.
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
CITY OF BUCKEYE
APPENDIX 5C
WASTEWATER COLLECTION SYSTEM
DEVELOPMENT FLOWS
Buckeye Developments Buildout Design Flow
Development Name
Development ID
Land Use
Area
(acres)
2025 Average Daily
Flow
(gpd)
Buildout Average
Daily Flow
(gpd)
Monte Verde
1
MDR/ Commercial
862
-
1,127,000
Sundance
2
MDR/ Commercial
2,067
1,415,000
1,475,000
Copper Falls
3
MDR
267
-
164,000
Westwind
4
Commercial
809
-
919,000
Silver Rock
5
MDR/ Commercial
1,280
-
1,732,000
Tartesso
6
MDR/ Commercial/ Mixed Use
7,410
-
9,560,000
Tartesso West
7
MDR/ Commercial/ Mixed Use
5,565
841,000
8,174,000
Elianto
8
MDR/ Commercial
3,897
-
4,920,000
Floreo at Terravalis
9
MDR/ Mixed Use
3,039
-
1,797,000
North Star Ranch
10
MDR/ Industrial/ Mixed Use
2,823
-
3,247,000
Festival Ranch
11
MDR
10,181
1,489,000
3,621,000
Terravalis
12
MDR/ Commercial
35,769
-
36,206,000
Henry Park
13
MDR/ Commercial
479
-
444,000
Montiere
15
MDR/ Commercial
593
-
950,000
Southwest Ranch
16
MDR/ Commercial
474
-
837,000
Sun Valley South
18
MDR/ Commercial
7,097
-
7,536,000
Desert Creek
19
MDR/ Commercial
2,232
-
2,885,000
Westpark
20
MDR/ Commercial
1,066
391,000
962,000
Blue Horizons
21
MDR/ Commercial
574
506,000
506,000
Valle Del Sol
22
MDR/ Commercial
318
-
679,000
Valle Del Rio
23
MDR/ Commercial
294
-
552,000
Cipriani
24
MDR/ Commercial
2,109
-
3,608,000
Buckeye 252
26
MDR
79
-
85,000
Parkman Ranch
27
MDR
151
-
162,000
Miller Crossings
28
Commercial
30
-
24,000
Marwest
30
Industrial
65
-
65,000
Sun Valley Villages I and II
25
MDR/ Commercial
5,815
-
7,791,000
Jackrabbit Crossing
32
Commercial
18
1,000
2,000
Paloma Vista
33
Industrial
160
83,000
166,000
Mayfield
34
MDR
144
-
146,000
Algodon
35
MDR
73
-
225,000
burg
74
Circle City
Wittmann
Morristown
10
10
Dixie
Allenville
Palo Verde
Buckeye
60
Liberty
Monte Verde
Sundance
Copper
Falls
Westwind
Silver Rock
Tartesso
Tartesso West
Elianto
Floreo
at Teravalis
North Star
Ranch
Festival
Ranch
Teravalis
Henry Park
Verrado
Montiere
Sienna Hills
Sun
Valley South
Desert Creek
Westpark
Blue Horizons
Valle
Del
Sol
Valle
Del
Rio
Cipriani
Buckeye
252
Parkman Ranch
Miller
Crossings
Mountain View
Business
Center
Marwest
Sun Valley
Villages
I and II
Former Cemex Sand
and Gravel Quarry
Jackrabbit
Crossing
Paloma Vista
Mayfield
Algodon
Beloat Rd
Baseline Rd
Southern Ave
Broadway Rd
Lower
Buckeye Rd
Yuma Rd
Van Buren St
McDowell Rd
Thomas Rd
Indian
School Rd
Camelback Rd
Bethany
Home Rd
Glendale Ave
Northern Ave
Olive Ave
Peoria Ave
Cactus Ave
Waddell Rd
Greenway Rd
Bell Rd
Union
Hills Dr
Beardsley Rd
Deer
Valley Rd
Pinnacle Peak
Perryville Rd
195th Ave
Airport Rd
Dean Rd
Rainbow Rd
Watson Rd
Apache Rd
Miller Rd
Rooks Rd
Oglesby Rd
Turner Rd
Wilson Ave
Palo Verde Rd
Bruner Rd
Johnson Rd
Last Revised: October 31, 2025 pw:\\IO-PW-INT.Carollo.local:Carollo_200000\Documents\AZ\Buckeye\203415-000000\03 Reports and Studies\02 Deliverables\ch03\
O
0
3
1.5
Miles
Disclaimer: Features shown in this
figure are for planning purposes and
represent approximate locations.
Engineering and/or survey accuracy
is not implied.
Data Sources: ESRI, City of Buckeye
2025 INTEGRATED WATER MASTER PLAN
NOVEMBER 2025 / FINAL / CAROLLO
Figure 5C.1 Buckeye Developments
CITY OF BUCKEYE
Legend
MP Communities
Buckeye Planning Area