WATER RESOURCES WSS APRIL 23 2026.PDF

Tempe Water Resources
Work Study Session – April 23, 2026

City council strategic priorities
Water Conservation and Efficiency 4.03
Achieve or exceed water conservation targets for Single Family, 
Multifamily and Landscape customer class water use as measured 
by gallons per capita per day
Groundwater Supply 4.16
Achieve groundwater production capacity to meet the projected 
average for future daily demand
Water Efficiency 4.22
Achieve efficiency gains from 80% of residential and commercial 
customers participating in Tempe water conservation programs
programs.
2

20,000
40,000
60,000
80,000
100,000
120,000
140,000
160,000
180,000
200,000
220,000
0
10,000
20,000
30,000
40,000
50,000
60,000
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
Population 
Acre feet
Year
Tempe total water use and population
Water use
Population
3

Salt River Project
87%
Central Arizona 
Project
6%
Groundwater Wells
7%
Water Supply
Salt River Project
Central Arizona Project
Groundwater Wells
Tempe’s water resources portfolio
tempe.gov/water
4

Salt River Project (SRP)
5

Salt River Project (SRP)
SRP 
Watershed
SRP 
member lands
6

Colorado River
7

Central Arizona Project (CAP)
8

“Groundwater supplies”
9

SRP Roosevelt New Conservation 
Space (NCS)
10

Non-SRP member supplies 
NCS, 9,000
CAP, 4,493
LTSCs, 3,000
Non-SRP member supplies (acre-feet)
11

Non-SRP member demands and population
3,112
2,873
2,917
2,876
2,781
0
2,000
4,000
6,000
8,000
10,000
12,000
14,000
16,000
18,000
0
1,000
2,000
3,000
4,000
2021
2022
2023
2024
2025
Non-SRP member population
Acre-feet
Year
Non-SRP member potable demands and population
Water demand
Population
12

2027 Non-SRP member supplies and demands
0
2,000
4,000
6,000
8,000
10,000
12,000
14,000
16,000
18,000
DCP 1 (2025)
CAP 85% cut
CAP Deadpool
Acre-feet
Planning assumptions for 2027
2027 Non-SRP member planning scenarios
CAP
LTSC
NCS
Projected demand
13

Long-term Non-SRP member supplies and demands
0
2,000
4,000
6,000
8,000
10,000
12,000
14,000
2028
(CAP 85% cut)
2030
2035
2040
Acre-feet
Planning year
Long-term Non-SRP member planning scenarios
CAP
Non-Member Groundwater Wells
Reclaimed Water
Projected Demand
14

Drought Resiliency and Preparedness Plan (DRPP)
tempe.gov/waterresiliency
15

Water Conservation
Commercial
25%
Industrial
8%
Landscape 
Irrigation
17%
Single Family 
Residential
30%
Multi-Family 
Residential
20%
2025 Water demand by customer class
tempe.gov/conservation
16

Thank you
Craig Caggiano
Deputy Public Works Director – Water
craig_caggiano@tempe.gov
480.858.2160
17