CPA2023014 BOS REPORT_PART4.PDF

Maricopa County — Formal (2023-12-06)

View PDF Item 22 Meeting page

Extracted text (via pymupdf) 59136 characters
49
WHITE TANK GRAND AVENUE AREA PLAN   |   MARICOPA COUNTY
Luke Air Force Base & Auxiliary Airfield #1
LAFB conducts 16,000 operations in its local airspace 
annually. Those operations are critical for Luke’s flight 
training mission. In response to rapid development 
around the base as well as its Auxiliary Airfield #1, 
HNAPZ that surround each of the facilities are defined 
and memorialized in the ARS to address compatible 
land use around the base and the long-term safety and 
welfare of surrounding communities. ARS § 28-8481 
identifies specific uses that are and are not considered 
compatible with the high noise or accident potential 
zone. Other uses may be permitted upon mutual consent 
of LAFB and the local jurisdiction. Within the Future Land 
Use Map the WTGA Area Plan designates areas within 
the HNAPZs as “Military Compatible.” The purpose of 
this designation is to ensure that future development 
is compatible with the high noise or accident potential 
generated by these military facilities that may have 
an adverse effect on public health and safety. This 
designation complies with ARS so only those uses 
that are compatible and consistent with the high noise 
or accident potential generated by these facilities are 
permitted. State law also identifies a larger risk area 
around LAFB and Luke Auxiliary Airfield #1 where 
military aircraft can impact public health and quality of 
life called “Territory in the Vicinity of a Military Airport”. 
This area extends ten miles to the north, south and west, 
and four miles to the east parallel from the center of 
the main runway at Luke Air Force Base and Auxiliary 
Airfield #1. While land use restrictions do not apply in 
this area, noise reduction techniques are required in the 
construction of new habitable buildings.  Additionally, 
as discussed in the Land Use section of this document, 
Maricopa County acknowledges and supports the LAFB 
GDC which surrounds the HNAPZ with delineated and 
appropriate densities. 
Natural Hazards & Issues
According to the 2021 Maricopa County Multi-
Jurisdictional Hazard Mitigation Plan, key natural 
hazards and issues in the WTGA planning area include:
Wildfires
Wildfires may not pose a serious structural threat to the 
largely urban areas of Maricopa County and Phoenix. 
However, they do pose a threat to areas deemed “Wildland 
Urban Interface” (WUI). With residential and commercial 
development encroaching further into the WUI, there is 
an increased likelihood of structural damage, human 
displacement, and loss of life. During the summer 
Luke Air Force Base, Airman First Class Mason Hargrove
Desert Brush Fire, Shutterstock

50	
CHAPTER 3: PLAN ELEMENTS
months, high temperatures and a dry climate create an 
easily combustible environment, resulting in wildfires 
ignited by natural events or human error.  Additionally, the 
Sonoran Desert is not wildfire-adapted. As a result, fires 
within the desert open space can create significant and 
lasting damage to natural ecosystems highly regarded 
by residents in the region.
Extreme Heat  
In a valley surrounded by mountains in every direction, 
Maricopa County and the Phoenix Metro Area’s 
geography creates a unique environment that allows 
for temperatures to regularly rise above 100 degrees. 
Between 1991 and 2020, Phoenix averaged 111 days 
above 100 degrees and a record breaking 145 days 
greater than 100 degrees (NWS, 2020). The Arizona 
Department of Health Services projects heat waves will 
be longer and hotter. Paired with the County’s unique 
geography and urban sprawl, the urban heat island 
effect could potentially exacerbate the human health 
effects. According to Maricopa County’s Climate and 
Health Strategic Plan, heat-related human mortality will 
increase, along with airborne particulates and pollutants 
(Climate Health Strategic Plan, 2016).
Dust, Flooding, and Monsoon Storms 
During the monsoon season, approaching thunderstorms 
produce downbursts, whipping up the desert dust, 
resulting in massive dust storms. Dust storms are often 
unpredictable, with the only warning sign being an 
imposing wall of dust several thousand feet high and 
stretching miles across. Monsoon dust storms frequently 
lead to multi-vehicle accidents due to reduced visibility. 
Monsoon storms bring a welcome but brief respite from 
the extreme summer heat. In Arizona, monsoon season 
typically arrives in mid-to-late June and lasts until 
September. Winds from the south bring moisture, leading 
to thunderstorms across the state. Monsoon storms are 
typically brief and intense, with the season delivering 
nearly half of Maricopa County’s annual 8.03 inches of 
rainfall (Phoenix averages - usclimatedata.com). In areas 
with steep terrain, these storms can cause flash flooding 
in low-lying roads and dry washes. Flash floods also 
pose risks and often start in rural mountainous regions 
where heavy rainstorms rapidly transport water through 
dry washes and riverbeds. Special Flood Hazard Areas 
(commonly known as 100-year floodplains, or areas with 
a one percent or greater chance of flooding in any given 
year) are shown on the Future Land Use Map and on 
Figure 16 on page 52 within the WTGP Area Plan.
Land Subsidence and Earth Fissures
Land subsidence has also been identified in the planning 
area. This phenomenon occurs when water is removed 
from underground reservoirs, and the weight of the 
overlying material compresses, causing the land to 
settle. Once compressed, alluvial deposits take up 
less space than before, and the ground surface sinks. 
The effects of subsidence can be significant, including 
damage to infrastructure (e.g., highways, railroads, 
utilities, irrigation systems, sewage disposal facilities, 
recreational facilities, and private residences, increased 
flooding, increased potential for groundwater pollution, 
and accelerated soil erosion). Land subsidence also 
creates another potential problem: earth fissures. Earth 
fissures are cracks in the ground surface that occur 
because of uneven or differentiated land subsidence. 
Earth fissures, found in several areas around LAFB, 
usually occur along the periphery of subsidence areas and 
carry large volumes of surface water runoff. Depending 
on circumstances, fissures can form gullies as much as 
50 feet wide and 10 to 15 feet deep. Once fissures begin, 
they tend to increase in number and length, spreading 
at uneven speeds and directions for several miles. 
Figure 16 identifies both significant land subsidence and 
known earth fissure activity areas.  Water conservation 
and reduction measures, as discussed in the Water 
Resource section, will continue to be an important factor 
in alleviating additional impacts resulting from these 
issues.
Phoenix Dust Storm, Alan Stark

51
WHITE TANK GRAND AVENUE AREA PLAN   |   MARICOPA COUNTY
Environmental Analysis
As noted in this section, there are several environmental issues that potentially impact the WTGA planning area.  As 
growth and development continues in this region, the following strategies should be considered to help mitigate and 
improve to the extent possible these factors.
Environmental Strategies
1.	 Prioritize and encourage protection of the natural 
and cultural environment. Policies within the 
WTGA Area Plan will be designed to protect native 
vegetation and wildlife though identification of 
native habitats, migration routes, and natural flood 
channels.  Coordination with Arizona Game and Fish 
Department (AZGFD) and surrounding jurisdictions 
is key in helping project migration routes and 
corridors that cross jurisdictional boundaries. 
Continued coordination with the State Historic 
Preservation Office (SHPO) is critical for identifying 
and 
protecting 
historic 
and 
archaeological 
resources as new development occurs. Infill and 
compact development can also help create areas for 
protection of the natural and cultural environments.
2.	 Maintain and improve the environment. Though 
levels of air and water quality are satisfactory in 
the WTGA planning area today, it is important that 
they be maintained for the benefit of existing and 
future residents of the region. Policies discouraging 
mass grading as well as innovative planning and 
site design techniques, such as the use of low 
impact development process, will be encouraged 
to reduce or mitigate environmental degradation. 
Implementation of the Maricopa County Multi-
Jurisdictional Hazard Mitigation Plan is important 
for the WTGA planning area. As development and 
redevelopment occurs, dark sky standards will be 
applied to continue improving the dark skies within 
the region for management of outdoor lighting.
3.	 Protect and buffer existing noise generating and 
potentially hazardous uses.  As discussed, there are 
a number of uses in the region that are important 
to the economy of the region, but also produce 
adverse impacts such as noise or other hazards.  It is 
important to continue support of public notification 
of these uses as well as protection of the uses from 
encroachment and the public from harm. Policies 
are aimed at notification, buffering, and coordination 
to ensure that proximate land uses are compatible 
around or in areas potentially affected by PVNGS, the 
proving grounds, and military facilities.
Cover of Maricopa County Multi-Jurisdictional 
Hazard Mitigation Plan, Maricopa County

52	
CHAPTER 3: PLAN ELEMENTS
Figure 16.	Environmental Features

53
WHITE TANK GRAND AVENUE AREA PLAN   |   MARICOPA COUNTY
Environment Goal #1: 
Encourage development practices that improve the 
natural and cultural environments and mitigate high risk 
hazard areas and natural hazards.
Environment Goal #2:
Protect and support military facilities, missions, and 
operations within and around the state delineated high 
noise and accident potential zones.
Environment Policy #1:
Where feasible and effective, Maricopa County supports 
new development utilizing Low Impact Development 
(LID) techniques in site design. LID techniques help 
reduce flooding, control dust, and improve water quality, 
including minimizing the clearing of native vegetation 
and mature trees, and retention of stormwater onsite and 
for fire prevention.
Environment Policy #2:
Maricopa County supports development that considers 
adverse environmental impacts on the natural and 
cultural environment. Specifically, Maricopa County 
supports preserving the White Tank Mountains, Agua 
Fria River, Hassayampa River ecosystems, and wildlife 
corridors, as well as cultural heritage sites, artifacts, and 
traditions, and the interface with the surrounding region.
Environment Policy #3:
Maricopa 
County 
supports 
continuing 
to 
build 
relationships and collaborations to preserve ecosystems 
by including entities, such as Arizona Game and Fish 
Department (AGFD) and the Arizona Department of 
Environmental Quality along with Maricopa County’s 
Environmental Services and Flood Control District of 
Maricopa County (MCFCD) Floodplain Management, in 
the entitlement and plan review process.
Environment Policy #4:
Maricopa County supports enforcing its Military 
Compatible land use designation and zoning districts for 
compatible development within and around the HNAPZ 
and protecting the viability of the military presence in the 
area and the region.
Environment Policy #5:
Maricopa County supports the enforcement of the Dark 
Sky Ordinance and supports regional efforts to limit 
excessive nighttime light in accordance with Dark Skies 
Association standards.
Environment Policy #6:
Maricopa 
County 
will 
continue 
to 
support 
the 
implementation of decisions to buffer noisy or hazardous 
activities from quieter less intense areas. This can be 
accomplished through coordination with appropriate 
entities as well as encouraging site development 
techniques to preserve open spaces through naturalized 
washes and wildlife corridors.
Environment Policy #7:
Maricopa 
County 
supports 
and 
encourages 
the 
preservation of floodplains and washes and the 
protection of viewsheds within scenic corridors. 
Environment Policy #8:
Maricopa 
County 
supports 
development 
projects 
that survey and integrate or protect native plants for 
landscaping and shading, regional flood control, and 
minimal emissions.
Environment Policy #9:
Maricopa County supports the removal of non-native 
vegetation in close proximity to development to reduce 
fire hazards and the revegetation of drought-tolerant 
plants that minimize wildfire risk.
Environment Policy #10:
Maricopa County supports biological and cultural 
surveys in consultation with the SHPO and AGFD for 
new developments prior to any new construction or trail 
projects.
Environment Policy #11:
Maricopa County supports continued coordination with 
proving ground facilities to ensure that they are aware of 
any new development within proximity of their facilities.
ENVIRONMENTAL GOALS AND POLICIES
The following goals and policies are identified to ensure the environment is maintained, protected, and improved in 
the WTGA planning area.

54	
CHAPTER 3: PLAN ELEMENTS
GROWTH AREAS ELEMENT
The Growth Areas Element is required by ARS and addresses an overview of 
growth trends and associated policies with special attention toward areas 
suitable for planned multimodal transportation and infrastructure expansion and 
improvements designated to support a planned concentration of a variety of uses.
Growth Trends
Per MAG data, the WTGA planning area is expected to grow significantly over the 
next forty years. Most of this area’s growth will occur within annexed areas outside 
of Maricopa County’s jurisdiction. MAG’s projections are driven by proposed and 
potential development within this area along with consideration of proscribed 
land uses for undeveloped areas. The unincorporated area is projected to grow in 
population from 65,988 to 68,454. The table below represents projected population 
growth within the planning area, including the breakdown between growth within 
unincorporated Maricopa County and within local jurisdictions.
Projected Population Growth within WTGA Area
Sun City, Shutterstock

55
WHITE TANK GRAND AVENUE AREA PLAN   |   MARICOPA COUNTY
Employment growth will accompany population growth 
in the WTGA planning area. The table above shows 
the projected number of jobs within the planning 
area, including both incorporated and unincorporated 
Maricopa County. Employment types included in the 
job projections include permanent jobs as well as 
construction, work-at-home and other non-site-based 
employment. MAG developed the above projections 
based on both land uses within the planning area and 
North American Industry Classification System (NAICS) 
sector-based job categories. A steady increase in 
employment is projected between 2020 and 2060 within 
the WTGA planning area. 
Growth Constraints
The County Comprehensive Plan identified and analyzed 
three categories of growth constraints which affect the 
location of growth within the WTGA planning area:
1.	 Physical 
constraints 
such 
as 
floodplains, 
subsidence/earth fissures, and water availability. 
Floodways and special flood hazard areas cover 
substantial portions of the planning area, specifically 
in the southwest area. Topography and open spaces, 
such as Vulture Mountains Recreation Area, White 
Tank Mountain Regional Park and the Hassayampa 
River Preserve also constrain growth to existing 
corridors of development. 
2.	 Built constraints such as infrastructure and services, 
noise generating land uses, and hazardous areas. 
There are limited infrastructure and services within 
the western portion of the planning area, which limits 
the potential for new development. The HNAPZs of 
LAFB and Luke Auxiliary Airfield #1 also limit the types 
of development permitted surrounding these areas. 




3.	 Ownership constraints such as federal land, state 
trust land, and Maricopa County regional parks. A 
significant portion of the planning area is owned 
by the BLM. This land has been designated as open 
space, which limits development potential in much of 
the north and western portion of the area. In addition, 
ASLD owns significant land in the planning area and 
their lands are meant to be used for the highest and 
best use for the State designated beneficiaries. 
Much of this land has been designed as rural.
Though growth may occur anywhere in the WTGA 
planning area, combining growth trends with growth 
constraints logically leads to two higher potential 
growth areas. That said, growth in these areas needs 
to be planned and managed to ensure the quality and 
sustainability of the region as development occurs. 
Road infrastructure, water and sewer capacity, public 
safety needs, schools, and sensitivity to the natural 
environment must also be considered and addressed. 
Employment 
Growth within 
the WTGA Area 
(2020-2060)

56	
CHAPTER 3: PLAN ELEMENTS
Growth Areas
Two potential growth areas are identified in the Future 
Land Use Map and in Figures 17 and 18.  Both potential 
growth areas take into consideration recent past growth 
trends and are driven by projected population and jobs 
growth depicted in Figure 19 and Figure 20. Whether 
the growth in these areas occurs in the unincorporated 
County or whether it is annexed and occurs in an adjoining 
municipality will greatly depend on the nature of the 
development as well as the services and infrastructure 
available to service the development adequately. As 
per its existing comprehensive plan policy, the County 
will continue to encourage urban development to annex 
into cities and towns where appropriate levels of service 
and infrastructure are more readily available, as well as 
ensure that County development has the appropriate 
level of services for water, wastewater, education, 
and public safety. If development is proposed in 
unincorporated Maricopa County, each development will 
be analyzed on a case-by-case basis during the planning 
and entitlement process.
Potential Growth Area - A
Potential Growth Area A (PGA-A) in Figure 17 on page 
57 is located along US 60 between the City of Surprise 
and the Town of Wickenburg’s planning areas and north 
of the HNAPZs of Luke Auxiliary Airfield #1.  This area 
has been under high development pressure over the last 
decade and is projected to have increased population 
and job growth.  The area contains the unincorporated 
communities of Wittmann, Circle City, and Morristown, 
as well as approved comprehensive plan amendments 
for Santa Barbara Ranch, Broadstone Ranch, Rancho 
Maria, and Walden Ranch, as well as the BNSF industrial 
project going through preliminary entitlement in the City 
of Surprise. While some of these developments have 
zoning in place and others do not, the key factor in the 
continued development momentum will be the ability 
to service the projects with utilities and public safety 
adequately. Other factors in PGA-A will be providing land 
use transitions and buffering for new development for 
the established and existing rural communities, as well 
as protection of the viewsheds and scenic corridors, such 
as State Route 74, Castle Hot Springs, and Wickenburg 
Highway Scenic Corridor. 
Potential Growth Area B
Potential Growth Area B (PGA-B) in Figure 18 on page 
58 is located between the City of Buckeye’s planning 
area and east of Loop 303 and the HNAPZs of LAFB 
and between Peoria Avenue and Indian School Road. 
This area has also seen a lot of development pressure 
with high projections in job and population growth and 
is currently under varying degrees of construction with 
the master planned communities of Cortessa, White 
Tank Foothills, Granite Vista, and Zanjero Trails. Other 
factors in PGA-B will be providing land use transitions 
and buffering for new development for established 
and existing rural and large lot communities, as well as 
protection of the viewsheds and the Olive Avenue Scenic 
Corridor.

57
WHITE TANK GRAND AVENUE AREA PLAN   |   MARICOPA COUNTY
Figure 17.	 Potential Growth Area A

58	
CHAPTER 3: PLAN ELEMENTS
Figure 18.	 Potential Growth Area B

59
WHITE TANK GRAND AVENUE AREA PLAN   |   MARICOPA COUNTY
Figure 19.	Projected Population Growth

60	
CHAPTER 3: PLAN ELEMENTS
Figure 20.	Projected Employment Growth

61
WHITE TANK GRAND AVENUE AREA PLAN   |   MARICOPA COUNTY
Growth Areas Goal #1:
Support growth in the potential growth areas that is 
fiscally and environmentally responsible, protects public 
health and safety, preserves scenic corridors and open 
space, buffers and enhances established rural areas, 
and promotes sensible annexation patterns.
Growth Areas Policy #1:
Maricopa County supports new development located 
within designated potential growth areas as long as the 
development is provided with the appropriate level of 
services and infrastructure.
Growth Areas Policy #2:
Maricopa County supports annexation for growth with 
higher levels of service and infrastructure needs than 
can be provided for in the County.
Growth Areas Policy #3:
Maricopa 
County 
supports 
continuing 
to 
build 
relationships with municipalities, school districts, and 
other providers and stakeholders within the WTGA 
planning area to ensure that both existing and future 
residents within the potential growth areas are best 
served.
Growth Areas Policy #4:
As new development occurs within the potential growth 
areas, Maricopa County supports preserving viewsheds 
and scenic corridors as well as the provision of open 
space buffers around established rural and large lot 
developments.
Growth Areas Policy #5:
Maricopa County supports development within the 
growth areas that both accommodates and provides for 
multi-modal transportation. 
Growth Areas Policy #6:
Maricopa County supports nonresidential development 
within the growth areas that is compatible with 
established development and mitigates any adverse 
effects such as traffic congestion, strain on water supply, 
and viewshed obstruction.
Growth Areas Policy #7:
Maricopa County supports a planned concentration of a 
variety of uses within the potential growth areas as long 
as uses are served adequately and designed to provide 
transition and buffers between established uses.
GROWTH AREAS GOALS AND POLICIES
The following goals and policies have been identified and intended to guide decisions related to growth within the 
WTGA planning area.
Dysart High School, dysart.org

62	
CHAPTER 3: PLAN ELEMENTS
ECONOMIC GROWTH ELEMENT
The Economic Growth Element is not required by ARS, however, it is an important 
topic to Maricopa County and is addressed in the comprehensive plan.  This section 
addresses economic strengths and economic growth within the WTGA Planning 
Area specifically in relation to the retail and housing industries.
Economic Strengths
The strengths of a local economy can be illustrated by a very simple metric known 
as the “Location Quotient” or LQ. LQ compares the percentage of jobs in each 
industry in a community to a larger economy, such as a county or state.  An LQ over 
1.0 indicates that a particular industry has a greater presence in the local economy 
compared to the larger economy indicating the strength of the local area. An LQ 
less than 1.0 shows the potential weaknesses of an economy.  The WTGA planning 
area has been compared to that of Maricopa County. The data below includes all 
employers with more than 5 employees.  As shown on the table below, the WTGA 
planning area has a number of strengths in its local economy compared to the 
County that benefit the residents and communities of the area.
Location Quotient for WTGA Area
 
WTGA Area 
Maricopa County
 
 Industry Cluster 
Employees
% of Total
Employees
% of Total
LQ
 Business Services 
3,410 
4.27%
235,910 
12.78%
0.33 
 Construction 
4,870 
6.09%
130,570 
7.07%
0.86 
 Consumer Goods Manufacturing 
1,580 
1.98%
25,540 
1.38%
1.43 
 Consumer Services 
9,880 
12.36%
206,060 
11.16%
1.11 
 Education 
5,290 
6.62%
135,900 
7.36%
 0.90 
 Finance, Insurance, & Real Estate (FIRE) 
2,550 
3.19%
162,940 
8.83%
0.36 
 Government, Social, & Advocacy Services 
13,500 
16.89%
141,780 
7.68%
2.20 
 Health Care 
3,670 
17.10%
224,780 
12.18%
1.40 
 High Tech Manufacturing & Development 
480 
0.60%
79,360 
4.30%
0.14 
 Hospitality, Tourism, & Recreation 
 3,210 
4.02%
72,580 
3.93%
1.02 
 Media, Publishing, & Entertainment 
590 
0.74%
13,670 
0.74%
1.00 
 Metal Inputs & Transportation-Related Manuf
 480 
0.60%
20,270 
1.10%
0.55 
 Non-Metallic Manufacturing 
370 
0.46%
19,730 
1.07%
0.43 
 Resource-Dependent Activities 
1,760 
2.20%
21,030 
1.14%
1.93 
 Retail 
12,720 
15.91%
215,910 
11.70%
1.36 
 Telecommunications 
400 
0.50%
22,330 
1.21%
 0.41 
 Transportation & Distribution 
5,180 
6.48%
117,550 
6.37%
1.02 
 Total 
79,940 
1,845,910 
 
Location Quotient for WTGA Area, MAG Arizona Employment Viewer

63
WHITE TANK GRAND AVENUE AREA PLAN   |   MARICOPA COUNTY
The strongest clusters within the local economy include:
	»
Government, Social, and Advocacy Services
	»
Resource-Dependent Activities (agriculture, mining)
	»
Consumer Goods Manufacturing
	»
Health Care
	»
Retail
	»
Consumer Services (restaurants, dry cleaners, etc.)
	»
Hospitality, Tourism, and Recreational
	»
Transportation and Distribution
	»
Media, Publishing, and Entertainment
In particular, the WTGA planning shows significant 
strength in the government sector primarily due to the 
presence of LAFB. Resource dependent activities also 
have a high LQ although employment in that cluster 
is modest. Consumer goods manufacturers include 
Subzero, Mlily USA, and Ball Corporation. 
Weaknesses in the local economy include Business 
Services; Finance, Insurance, and Real Estate; High 
Tech Manufacturing; Metal Inputs and Transportation-
Related Manufacturing; Non-Metallic Manufacturing; 
and Telecommunications. Typically, newly developing 
areas of Maricopa County first experience residential 
development followed by retail development that 
is following rooftops.  True job growth in business 
services, manufacturing, and other industries lags by a 
number of years.  Transportation & Distribution is shown 
as about equal to Maricopa County levels. It is possible 
that the data from MAG does not yet reflect distribution 
companies that have entered the area over the past few 
years.
Economic Growth 
The economy of the WTGA planning area is diverse and 
among the fastest growing regions of Maricopa County. 
The completion of the Loop 303 Freeway has provided 
a significant stimulus to economic growth that will 
further expand employment opportunities for the area’s 
residents. As noted, the area has a number of strengths 
that benefit the residents and communities of the WTGA 
Planning area. The predominant industry clusters 
include government, consumer goods, and health care.  
Since 2018, the WTGA planning area has captured 
34% of all industrial development in Maricopa County. 
More than 15 million square feet of industrial space is 
currently under construction in the WTGA Area.  Given 
its resources of modern interstate and state highways 
(particularly the Loop 303 Freeway), rail service, and 
proximity to the Southern California markets, the long-
term outlook for the area to improve its employment 
base is very positive. 
Retail 
The retail market of the WTGA Planning area is 
experiencing significant construction activity spurred 
by residential growth.  With recovery from the lingering 
effects of the 2007 – 2009 recession and its weak 
recovery, the retail market throughout Maricopa County 
is finally seeing new shopping center development. 
The retail vacancy rate within the area stands at 1.1%, a 
level not seen in recent history, and will stimulate new 
development activity. Most of the new retail development 
in the area is occurring in the Prasada master planned 
community in Surprise near the intersection of Loop 303 
and Waddell Road.  
Housing 
The WTGA planning area has grown rapidly over the past 
two decades from an estimated population of 149,000 
in 2000 to 391,900 in 2020, creating huge demand for 
housing.  Today, the area accounts for 20.8% of all 
single family housing permits in the metro area with the 
majority of that activity occurring in the City of Surprise. 
Multifamily housing development has grown modestly 
over the past decade, but increased by nearly 1,500 units 
in 2021.  Most of the units were built in the urbanized 
parts of the area in the cities of Surprise and Glendale. 
Housing construction will continue in the future in the 
region to satisfy the demand for housing generated by 
population growth.

64	
CHAPTER 3: PLAN ELEMENTS
ECONOMIC GROWTH 
OPPORTUNITIES
The key economic factor for the WTGA planning 
area is diversification of the employment base. 
As the area continues to grow, it will offer a 
broader range of employment opportunities and 
higher wage jobs.  Ultimately, this will increase 
the jobs-to-population ratio of the area and 
reduce commuting for many residents.
Economic Growth Analysis
Building on the population and employment growth 
illustrated in the Growth Areas section and the factors 
considered in this section, the WTGA planning area 
is forecasted by the MAG to increase in population 
by approximately 285,700 persons through 2040, an 
increase of 61.5%.  Job growth will accelerate at an even 
faster pace of 70%, creating nearly 93,000 new jobs over 
the next 18 years.  As a result, the job-to-population ratio 
for the WGTA planning area is expected to increase from 
0.27 in 2018 to 0.30 by 2040. These rapid growth rates 
will have tremendous impact on the region’s economy, 
housing market, and employment opportunities.  
A population increase of 285,700 persons will likely 
create demand for over 114,000 housing units.  In order 
to accommodate that population, a full range of housing 
types will be required, from suburban ranches to high 
density apartment complexes.  Retail development will 
continue to follow the rooftops and should be in active 
areas where they can provide the services demanded by 
the new population. Most importantly, the expansion of 
the population will provide a ready source of labor for the 
expanding employment base.  Further diversification of 
the area’s economy is needed to reverse today’s pattern 
of commuting and improve wage levels of the area’s 
residents. Of the 145,755 employed individuals living in 
the WTGA planning area, 87% leave the area each day 
for work.
The basic infrastructure assets of the WTGA planning 
Area, including freeway access and rail and airport 
availability, are well developed.  Proximity to the Southern 
California markets is a key asset as well as the ample 
open spaces in the region which provide an opportunity 
for expansion of eco-tourism.  Continued expansion of 
the WTGA planning areas educational opportunities 
is also an important component for expanding the 
skill sets of residents.  Secondarily, a greater focus on 
attracting different types of industries that can take 
advantage of the area’s resident workforce (both college 
and non-college educated), will need to be a key focus 
of the economic development strategy moving forward.
Housing Construction, Wikimedia Commons

65
WHITE TANK GRAND AVENUE AREA PLAN   |   MARICOPA COUNTY
Economic Growth Goal #1: 
Assist municipalities in the WTGA planning area to 
diversify their economies consistent with available 
resources and to improve the quality of employment 
opportunities.
Economic Growth Goal #2: 
Support an economic environment that nurtures locally 
based employment and economic opportunity. 
Economic Growth Goal #3: 
Support the presence of higher education facilities 
in the WTGA planning area to enhance the workforce 
development pipeline.
Economic Growth Policy #1:
Maricopa County supports coordination with the Arizona 
Commerce Authority, Greater Phoenix Economic Council 
(GPEC), WESTMARC, and other organizations to support 
industry clusters that will provide long term, stable 
growth in the area.
Economic Growth Policy #2:
Where 
feasible 
and 
effective, 
Maricopa 
County 
supports the use of tax-exempt bond financing from 
the Maricopa County Industrial Development Authority 
(IDA) for affordable housing, manufacturing facilities, 
infrastructure projects, and non-profit facilities. 
Economic Growth Policy #3:
Maricopa County supports the provision of information 
and assistance to prospective businesses about 
Maricopa County and the resources available from the 
County. 
Economic Growth Policy #4:
Maricopa County supports meeting the consumer needs 
of the area’s expanding population by encouraging 
additional 
retail 
and 
neighborhood 
commercial 
businesses. 
Economic Growth Policy #5:
Maricopa County supports partnerships with local 
organizations such as Local First Arizona and others to 
provide programs to small businesses. 
Economic Growth Policy #6:
Maricopa County supports the development and 
expansion of vocational and technical schools such 
as WestMEC in the WTGA planning area that provide 
technology training at the high school level.
Economic Growth Policy #7:
Where feasible and effective, Maricopa County supports 
collaboration efforts with educational providers within 
the WTGA planning area to develop the local workforce’s 
skills in key industry clusters.
Economic Growth Policy #8:
Maricopa County supports collaboration efforts with 
nonprofits and developers to increase eco-tourism in the 
region.
ECONOMIC GROWTH GOALS AND POLICIES
The following goals and policies are identified to aid in supporting economic growth in the WTGA planning area.

66	
CHAPTER 3: PLAN ELEMENTS
OPEN SPACE ELEMENT
The Open Space Element is required by Arizona statute and includes a 
comprehensive inventory of open space and recreational areas within the WTGA 
planning area. Following the inventory, this element analyzes forecasted needs 
and demonstrates strategies, goals and policies to acquire, establish, integrate 
and promote open space areas and recreational resources.
Open Space Network
Open Space is an asset that is overwhelmingly appreciated by the community. The 
WTGA planning area contains approximately 114,267 acres, or 30% of open space, 
within the 727 sq. mile planning area.  This open space designation includes the 
County regional parks and preserves listed below and illustrated in Figure 23 on 
page 73, as well as land owned and managed by the BLM, that typically designates 
their land for open space and recreational purposes unless disposed of to another 
entity.  There are also significant trails, scenic corridors, floodways, and special 
flood hazard areas that comprise the open space network. Additionally, there 
are other open space areas found in subdivision parks, subdivision open spaces, 
schools, and golf courses scattered across the WTGA planning area.
White Tank Mountain Regional Park
White Tank Mountain Regional Park is the largest park in the County’s regional park 
system with 29,557 acres. According to the Maricopa County Comprehensive Plan, 
“most of the park is made up of the rugged and beautiful White Tank Mountains,” but 
the park also includes amenities such as parking, picnic sites, ramadas, restrooms, 
volleyball courts, playgrounds, 40 reservable sites for tent or RV camping, 43.26 
miles of trails, an amphitheater, and equestrian facilities.
Vulture Mountain Recreation Area
Vulture Mountain Recreation Area is 71,000 acres, and MCPRD has leased acres 
in the area to provide recreation facilities and services for visitors. The Recreation 
and Public Purpose (R&PP) lease in the Vulture Mountain Recreation Area is for 
the management of 1,046 (park) acres of the Vulture Mountain Regional Area. The 
lease allows for the construction of amenities such as an entry station, parking, 
picnic areas, campsites, a playground, restrooms, ramadas, trailheads, trails, an 
amphitheater, and an OHV staging area. 
Hassayampa River Preserve
The Hassayampa River Preserve is a 776 acre habitat for wildlife, including foxes, 
javelinas, bobcats, reptiles, amphibians, dragonflies, and over 300 bird species. 
According to the Parks Vision 2030 Plan, the preserve includes several short trails 
that traverse riparian areas, woodlands, a lake, and lead to the stunning view at 
Lyke’s Lookout. Other amenities include parking, picnic areas and campsites.
Top: White Tank Mountain Regional Park, Jan Pauw
Middle: Vulture Mountain Recreation Area, Kyle M.
Bottom: Hassayampa River Preserve, John Menard

67
WHITE TANK GRAND AVENUE AREA PLAN   |   MARICOPA COUNTY
Trails 
In addition to the trails mentioned above, the WTGA 
planning area also contains the Maricopa Trail System 
(MTS).
Maricopa Trail System
The MTS shown in the illustration below includes over 
315 miles of existing trails that ring the County and 
was originally part of the Sun Circle Trail.  The Board of 
Supervisors (BOS) formed a trail commission in 2000, 
and by 2002, the County developed the trail concept 
for the MTS, which grew from 19 miles of trails in 2019 
to the current day mileage.  The overarching goal is to 
connect surrounding municipalities and major regional 
parks across Maricopa County. The trails accommodate 
walkers, hikers, runners, mountain bikers, equestrians, 
and inline skaters.
In 1965, the Arizona State Horseman’s Association and 
appointed Maricopa County Hiking and Riding Trails 
Committee worked together to establish the 110-mile 
Sun Circle Trail. The Sun Circle Trail is also designated 
as a National Recreation Trail and is now a part of the 
larger MTS.  The original agreement by the BOS, Bureau 
of Reclamation (BOR), and Salt River Project (SRP) 
allowed for portions of canal banks to be used as trails. 
In 2015, all parties renewed the agreement.  
Maricopa County’s Sun Circle Trails, Maricopa County

68	
CHAPTER 3: PLAN ELEMENTS
Scenic Corridors
While not designated as “open space”, there are five 
adopted scenic corridors in the WTGA planning area 
which are illustrated on the Future Land Use Map. 
These scenic corridors are designed to protect valuable 
viewsheds related to open space and are described 
below. Two of the five scenic corridors are regulatory 
which means that the design requirements, or a portion 
thereof, are mandatory.  The remainder three scenic 
corridors have policy guidelines and design guidelines; 
however, developers are not required to implement such 
guidelines under by right uses of land.
Castle Hot Springs Road Scenic Corridor
The Castle Hot Springs Road Scenic Corridor extends ¼ 
mile on each side of the centerline of Castle Hot Springs 
Road in Maricopa County. The 2000 White Tank Grand 
Avenue Area Plan proposed a study of the corridor. 
Following the study, the Board adopted this corridor 
in 2006 in response to area public involvement. While 
the corridor is non-regulatory, the guidelines protect 
mountains, vegetation, washes, and the unique views 
and characteristics of the area.
State Route 74 Scenic Corridor
The State Route 74 Scenic Corridor is a scenic corridor 
that is both regulatory and policy.  The regulatory 
portion extends to 500’ on each side of the centerline of 
State Route 74 in Maricopa County. The non-regulatory, 
or policy portion, extends from 500’ to ¼ mile on each 
side of the centerline of State Route 74. The Board 
adopted the original regulatory portion of the Corridor 
in 1994 while the policy portion was adopted in 2006 
in conjunction with a corridor study.  The corridor is 
intended to help integrate growth into the community 
and minimize impacts to personal property and quality 
of life. There are design guidelines in place that include 
policies for landscape, natural habitats, character/
identity, building height, lighting, signs, and fencing. 
Regulatory requirements associated with the corridor 
may be found within the Maricopa County Zoning 
Ordinance.
McMicken Dam Scenic Corridor
The McMicken Dam Scenic Corridor is a non-regulatory 
scenic corridor with boundaries that extend ¼ mile on 
each side of the property owned by the FCDMC and 
the Maricopa County Regional Trail, except properties 
within the City of Surprise.  The intent of the design 
guidelines established within this corridor is for the 
protection and enhancement of the McMicken Dam area 
to be implemented as development occurs. 
Olive Avenue Scenic Corridor
The Olive Avenue Scenic Corridor is a non-regulatory 
scenic corridor that extends ¼ mile on both sides of 
Olive Avenue right-of-way in Maricopa County between 
State Route 303 and White Tank Mountain Regional 
Park. Design guidelines are in place to promote physical 
and visual public access to open space resources.  Goals 
within the plan include entry or gateway into the White 
Tank Mountain Regional Park and blending of urban and 
rural land uses. 
Wickenburg Highway Scenic Corridor
The boundaries of the Wickenburg Scenic Corridor 
encompass lands within two miles of the edge of the 
right-of-way of both sides of the Wickenburg Highway 
(U.S. Highway 60- 89) extending from Bell Road to the 
Town of Wickenburg corporate limits. Policies in the plan 
address orderly development, growth accommodation, 
adequate transportation and utilities, and no down 
zoning with negative impact. Regulatory requirements 
associated with the corridor may be found in the 
Maricopa County Zoning Ordinance.
Floodway and Special Flood Hazard Areas
As can be seen in Figure 23 on page 73, the WTGA 
planning area contains a significant amount of 
designated Floodways and Special Flood Hazard Areas. 
Though some of these areas may be developed or 
channelized, with these options being expensive, some 
communities within the planning area have designed 
these areas as open-space corridors. According to the 
FCDMC, a floodway is the channel of a river or stream and 
the adjacent land areas that must be reserved in order to 
discharge the base flood within cumulatively increasing 
water surface elevation more than a designated height. 
A special flood hazard zone is an area that has a one 
percent or greater chance of flooding in any given year, 
also known as the 100-year flood zone.

69
WHITE TANK GRAND AVENUE AREA PLAN   |   MARICOPA COUNTY
Wildlife Connectivity Linkages
As shown below in Figure 21, AZGFD has identified a 
wildlife connectivity linkage that traverses the WTGA 
planning area. The region’s wildlife resources are a 
critical component of the state’s natural environment, 
especially open spaces. As the region continues to 
grow, wildlife will be forced to find new routes through 
areas they traditionally traveled due to the development 
of roads, buildings, and energy corridors. Increasing 
connectivity for wildlife through the planning area 
will reduce negative interactions between people and 
wildlife and will allow for animals to travel and access 
resources they need more easily and safely.
Figure 21.	 Wildlife Connectivity

70	
CHAPTER 3: PLAN ELEMENTS
Conservation Opportunity Areas
AZGFD defines Conservation Opportunity Areas (COAs) 
as “specific areas on the landscape where actions 
will most likely lead to substantial improvements for 
wildlife and their habitats.” This area provides voluntary 
guidance to prioritize areas for conservation. One of 
these COAs is located within the WTGA planning area, as 
depicted on Figure 22 below. This COA, is located within 
the Hassayampa River floodplain and serves as an 
important travel corridor for “wildlife, habitat for upland 
and riparian species, and migration stopover sites and 
breeding habitat for migratory birds, including [species] 
such as the southwestern willow flycatcher and western 
yellow-billed cuckoo,” according to the Arizona Game 
and Fish Department. 
Figure 22.	Conservation Opportunity Area

71
WHITE TANK GRAND AVENUE AREA PLAN   |   MARICOPA COUNTY
Open Space Analysis
Per Arizona statutes, this section provides an analysis 
of forecasted needs and strategies. Open Space in the 
WTGA planning area is a collective network of passive 
natural areas and preserves, active parks with a variety of 
amenities, trails, and scenic corridors. The look and feel 
of open space can vary across landscapes, appearing 
as undeveloped physical spaces that feel more natural, 
or they can be curated, such as community parks or 
golf courses. The formal and informal dedication of 
open space areas can serve as habitats for endangered 
species, protect visual resources, reduce the urban 
heat effect, and enhance community identity. Open 
space gives the community and visitors the opportunity 
to celebrate the natural beauty of an area through the 
preservation of the landscape that makes it a dynamic 
place to live, and having access to open space is 
beneficial to a community’s overall well-being, including 
mental and physical health. 
Through the planning process, the community uniformly 
confirmed that the ample and beautiful open spaces in 
the planning area are appreciated and merit protection 
for the enjoyment of existing and future residents and 
visitors. This overarching goal will occur through the 
life of this plan and beyond and will only work with a 
multifaceted approach of government policies and 
regulations, non-profit acquisitions, and support from 
the private development. Maricopa County’s Parks and 
Recreation Department (MCPRD) does an excellent job 
of maintaining and enhancing parks and is poised to 
update their parks plan, which will continue to implement 
such measures within the WTGA planning area and 
across Maricopa County.  The Maricopa County Planning 
and Development Department also coordinates open 
spaces, parks, and trails when new development occurs 
by encouraging usage of their adopted scenic corridor 
guidelines. The Flood Control District of Maricopa 
County (FCDMC) works toward their mission and goals 
with community and State partnership to create viable 
natural drainage areas and wildlife corridors within 
their flood control facilities.  The BLM and the AZGFD 
also maintain their lands for recreation, open space, 
and wildlife habitats. Lastly, non-profit organizations 
such as the White Tank Mountains Conservancy assist 
by collecting donations to acquire and preserve open 
spaces.
As part of the plan update, BLM land that was previously 
designated as Single-Family Rural is reclassified as 
open space to align with BLM’s preferred land uses in 
these areas. The updated Future Land Use Map includes 
over 114,000 acres of open space, which equates to 
approximately 30% of the planning area. The Parks 
Vision 2030 identified population growth as one of the 
key challenges associated with preservation of open 
spaces, fragmented ecosystems, diminished wildlife 
richness, and placing undue demand on existing natural 
and outdoor recreation systems. MCPRD’s report also 
states that high-quality natural resources, regional open 
spaces, wildlife habitats, trails, and regional parks are 
top priorities for the community. 
Open Space and Recreation Forecast 
According to the County’s Parks Vision 2030, MCPRD 
estimates a need to acquire approximately 15,000 acres 
every ten years to maintain the current baseline of 27 
acres of undeveloped natural areas per thousand people 
across the County. Resident access to these areas 
will become increasingly important as the population 
continues to grow.

72	
CHAPTER 3: PLAN ELEMENTS
Year
Planning Area 
Population
Open Space Acres / 
1,000 People
Acres Required
2020
478,193
27
12,911
2050
917,446
27
24,771
The WTGA planning area provides 238 acres of open 
space per thousand residents, which greatly exceeds the 
County’s baseline of 27 acres per thousand residents. 
The projected acreage required for the planning area is 
12,911; however, the current acreage of County Parks and 
Open Spaces within the planning area is approximately 
114,000 acres. Expansion of the parks and open space 
network is not required in this planning area to meet the 
needs of current and future residents.
Open Space Strategies
1.	 Expand opportunities to promote community health 
and wellbeing through access and programming 
of 
parks 
and 
open 
spaces. 
This 
strategy, 
which is referenced in the Parks Vision 2030, 
requires partnerships with non-profits, business 
organizations, and cities and towns to promote 
initiatives highlighting the importance of regional 
parks and trail systems as a means to support the 
health and wellbeing of all residents. 
2.	 Reinvest, protect, and continue to improve our 
existing park system. This strategy, which is 
referenced in the Parks Vision 2030, stems from the 
need to improve parks, especially as the County’s 
population grows and parks and open spaces 
become overburdened. While expansion of parks is 
not needed in the planning area, maintenance and 
programming is critical. 
3.	 Bring the Maricopa Trail into Vulture Mountains 
Recreation Area and the Hassayampa River Preserve 
and continue working with municipalities to include 
connector trails to neighborhoods and points of 
interest. Connecting existing regional parks to 
the County’s trail systems will further allow the 
community opportunities to access the County’s 
great open space and recreation amenities. Part 
of this strategy involves developing partnerships 
between Wickenburg, Maricopa County, and ASLD 
to assist in acquiring trail easements to Vulture 
Mountains, south of the Town’s planning limits. 
4.	 Continue partnership with BLM to develop and 
maintain a cooperative management framework for 
the 71,000-acre recreation area. The 2009 Strategic 
System Master Plan identified the need for a new 
regional park near Wickenburg, which led to the BLM 
and Maricopa County entering into a Recreation 
and Public Purposes (R&PP) lease in the Vulture 
Mountains Recreation Area in 2019. The continued 
construction and operation of recreation facilities 
and the continued partnership between BLM and 
Maricopa County will be essential to the success of 
this new recreation area. 
5.	 Provide open space and recreational amenities in 
subdivisions and ensure that they are connecting 
to existing trails and pathways where appropriate. 
Although not a mandate of MCPRD, open space 
and park planning is an important aspect of 
consideration in the development of subdivisions. 
Ample open space and active amenities add to 
the quality of life and health of future residents. 
Active amenities could include but are not limited 
to dog parks, sport courts, exercise equipment, and 
playgrounds.
Cover of 
Maricopa County 
Parks Vision 
2030

73
WHITE TANK GRAND AVENUE AREA PLAN   |   MARICOPA COUNTY
Figure 23.	Open Space Network

74	
CHAPTER 3: PLAN ELEMENTS
Open Space Goal #1: 
Protect, provide, and expand access to regional parks 
and to coordinate the amount of protected open space 
parks proportionately with population growth. 
Open Space Goal #2: 
Continue to enhance the Maricopa Trail System and 
cooperate with adjoining municipalities to ensure this 
trail system is connected to their systems of parks and 
open spaces.
Open Space Goal #3:
Have quality neighborhood parks and open spaces with 
adequate and appropriate recreational amenities and 
access points to serve residential developments with 
connections to regional parks and trails.
Open Space Goal #4:
Protect scenic corridors, views, and open spaces and 
use open space buffers around established parks and 
rural neighborhoods. 
Open Space Policy #1:
Maricopa 
County 
supports 
maintenance 
and 
improvements to regional parks and preserves in the 
WTGA planning area.
Open Space Policy #2:
Maricopa County supports non-profit and community 
groups’ efforts to acquire and preserve open spaces 
and wildlife corridors.
Open Space Policy #3:
Maricopa County supports continued coordination with 
the BLM, the Arizona Game and Fish Department, and 
adjoining municipalities to maintain and preserve open 
spaces.
Open Space Policy #4:
Maricopa County supports coordination with the 
Arizona Game and Fish Department to identify locations 
for potential open space development, including 
endangered species habitats, migration routes and 
wildlife corridors, and sensitive lands.
Open Space Policy #5:
Maricopa County supports dedication and improvement 
of trail rights-of-way within and around new development.
Open Space Policy #6:
Maricopa County supports soft edge treatments along 
the perimeter of regional parks and trails systems.
Open Space Policy #7:
To help maintain high quality parks and trails, Maricopa 
County supports user-based funding options for its 
regional parks system and, where feasible, regional trail 
system.
Open Space Policy #8:
Maricopa County supports the protection of scenic 
corridors and views as outlined in adopted scenic 
corridor plans and in Maricopa County Zoning Ordinance.
Open Space Policy #9:
Maricopa County supports the natural treatment of 
drainageways and the preservation of floodways and 
special flood hazard zones in a natural state.
Open Space Policy #10:
Maricopa County supports provisions for open space, 
such as a minimum of 15% open space with 5% of the 
open space reserved for active recreation amenities.
Open Space Policy #11:
Maricopa County supports utilizing natural open space 
as transitions and buffers between established rural 
communities and other types of development.
Open Space Policy #12:
Maricopa County supports jurisdictional coordination 
when utility corridors, such as powerlines and pipelines, 
cross municipal boundaries. Where feasible and 
effective, jurisdictions should work with utility providers 
to use easements and utility corridors as open space, 
trails, or other compatible passive recreational uses.
OPEN SPACE GOALS AND POLICIES
The following goals and policies are identified to aid in ensuring the open space within the WTGA planning area is 
maintained, protected, and enhanced.

75
WHITE TANK GRAND AVENUE AREA PLAN   |   MARICOPA COUNTY
WATER RESOURCES ELEMENT
The Water Resources Element is required by Arizona statute and addresses the 
known and legally physical available surface water, groundwater, and effluent 
supplies; the demand for water that will result from future projected growth: and 
an analysis of how the demand for water will be served.
Water Resources 
Surface Water and Groundwater
Due to the arid climate of the southwest, prioritization of water infrastructure is 
important to the continued growth of the area. The entirety of the area falls within 
the Arizona Department of Water Resources (ADWR) Phoenix Active Management 
Area (AMA), which requires that most residential development demonstrate that a 
100-year assured water supply is available. See AMA boundary on page 79.
The 336-mile Central Arizona Project CAP canal begins at Lake Havasu and ends at its terminus just south of Tucson, 
Central Arizona Project Website

76	
CHAPTER 3: PLAN ELEMENTS
A Community Water Service (CWS) is any water system 
that serves fifteen (15) or more service connections. 
There are approximately fifty (50) different CWSs that 
provide water distribution services in the WTGA planning 
area with the connections served ranging from 19 to 
over 150,000. The ten (10) largest providers are:
	»
EPCOR
	»
City of Peoria
	»
City of Avondale
	»
Liberty Utilities (Litchfield Park Water and Sewer)
	»
City of Goodyear
	»
City of El Mirage
	»
City of Surprise
	»
City of Buckeye
	»
Arizona Water Company
	»
LAFB
Within the WTGA planning area, approximately 130 
square miles are served by a CWS. The remaining 597 
square miles do not currently have water infrastructure. 
The bulk of the areas with water service are within Loop 
303 or east of the White Tank Mountains. Outside of 
these areas, water service is limited to isolated locations 
along US 60 as shown in Figure 24 on page 77.
In June of 2023, state leadership announced that further 
residential subdivisions that rely on groundwater will 
not be issued the required certificates for assured 
water due to a projected 4% shortfall in the 100-year 
groundwater supply in the Phoenix AMA. Additionally, 
any multifamily residential project with six or more units 
must now obtain an assured water supply certificate. 
For residential development to continue beyond what is 
already approved in the WTGA planning area, sources of 
water from a municipal provider will need to be identified 
and secured. 
Sewer and Effluent
Sewer service providers in the WTGA planning area 
include the City of Surprise, City of Peoria, City of 
Glendale, City of El Mirage, City of Goodyear, Liberty 
Utilities, and EPCOR. Figure 24 on page 34 also shows 
the sewer distribution system in the area. Like water 
distribution, sewer infrastructure is available within Loop 
303 and east of the White Tank Mountains. Areas to the 
north and west of the White Tank Mountains do not have 
sewer infrastructure currently. Private water wells and 
septic systems are common in unincorporated areas 
not serviced by water and sewer providers. 
Greywater is wastewater from homes and businesses 
that is reclaimed for irrigation and landscaping use. 
Currently, only 5% of Arizona’s water supply comes 
from reclaimed water. Treated greywater will become an 
increasingly important source of additional water. 
As water is a scarce resource for the WTGA planning 
area, using greywater will be a critical part of the 
water mix for accommodating growth. Specifically, if 
greywater can be used for irrigation and landscaping, it 
will free up additional fresh water within current water 
rights and allotments for use by residential, commercial, 
and industrial growth. To rely more on greywater in the 
future, Maricopa County will need to coordinate with 
municipal and private water suppliers in the permitting 
and development of reclamation facilities and reuse 
pipeline infrastructure.
Central Arizona Project
The CAP Canal, managed by the Central Arizona Water 
Conservation District, brings approximately 1½ million 
acre feet of water annually from the Colorado River to 
Maricopa, Pinal, and Pima Counties. The CAP Canal 
extends nearly 340 miles from Lake Havasu to the San 
Xavier Indian Reservation near Tucson and is considered 
a vital source of water for the Phoenix and Tucson 
metropolitan areas. Colorado River water is allocated 
to several western states based on the 1922 Colorado 
River Compact where Arizona, California and Nevada 
comprise what are known as Lower Division states, while 
Wyoming, Colorado, Utah and New Mexico comprise the 
Upper Division states. Each Division receives 7½ million 
acre-feet annually that is apportioned to each state 
in various amounts. Arizona has rights to 2.8 million 
acre-feet annually which is either used or stored in 
underground aquifers to help alleviate potential future 
water shortages. The complex process of storing and 
managing water in these aquifers is overseen by the 
Arizona Water Banking Authority.
CAP, fronterasdesk.org