City Council
Presentation
June 16, 2026
1 Maureen Reily
Presentation Overview
2025 Urban Water Management Plan
and Water Shortage Contingency Plan
• Water Demands
• Water Supply Sources
• Water Supply Reliability
• Water Shortage Contingency Planning
2 2025 UWMP requirements similar to 2020 UWMP
Urban Water Management
Plan
Prepared by California urban water suppliers
• Prescribed content and tables
• Updates every 5 years
• 20-year planning horizon
• Tracking of the mandated 20 percent reduction
in per capita use by 2020 (SBx7-7)
• Documents water supplies planned for existing
and future water demands and supports shorterterm and long-term resource planning 3 Water Demands: Definition of Units
4 • Gallons per capita (person) per day (gpcd)
Treated water delivered in one year divided by the
total service area population
• Acre-foot (AF)
1 acre-foot = 325,851 gallons
Covers one acre area in one foot of water
• Acre-feet per year (AFY)
Typical single-family home in City uses about 1/3 AFY
Water Demand: Baseline and Target
0 50
100
150
200
250
1999-2008 2015 2020 2025
gallons per capita per day
159 gpcd 151 gpcd*
Baseline 241 gpcd
Interim Target 217 gpcd
2020 (and beyond) Target 193 gpcd
164 gpcd
5 * Actual 2015 water use reflects response to water restrictions, voluntary conservation and other factors.
Future Water Demand
• Projected demand based on:
o City General Plan buildout and growth assumptions
o Representative water demand factors
o Anticipated future conservation
• Projected demands remain below the State-mandated target water use of 193 gpcd
2025 2030 2035 2040 2045
Buildout
(2050 or
later)
Population 31,151 33,150 35,850 38,550 41,250 44,000
Water Demands (AFY) 5,563 6,341 7,119 7,897 8,675 9,451 Water Use per Capita
(gpcd) 159 171 177 183 188 192
6 Water Supply Sources to Meet Demands
Supply amounts shown above do not reflect total supply available to the City from each source, nor do they reflect any limits on the City’s groundwater rights, but instead the water utilized by the City to supply projected demand. 9,451 AFY
7 0
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
2025 2030 2035 2040 2045 Buildout (2050
or later)
Basin Wells
Recycled Water
for Potable Offset
Naci Water from WTP
River Wells
Naci Water
from
Recovery
Well
Acre-feet per Year
Supply for Future Growth
• Sufficient supply is available for existing community and planned growth in the General Plan
• UWMP updates every 5 years will account for:
o Growth and changes in development trends
o Drought, climate change, and State
requirements
o Supply availability and reliability
• Deviations from General Plan continue to require
Water Supply Assessments per City policy
8 Keys to Supply Reliability
• Maintain diverse portfolio (river water, basin water, Nacimiento water, recycled water)
• Continue implementing water conservation
programs (Demand Management Measures)
• Continue planning for additional recycled water
use
• Prepare Annual Water Supply and Demand
Assessments and submit Annual Water Shortage
Assessment Reports to DWR by July 1
9 Water Shortage Contingency Planning
No changes to the 2021 WSCP
Stages of Conservation:
Permanent prohibitions on water waste
Stage 1 – up to 10% voluntary reduction
Stage 2 – up to 20% mandatory reduction
Stage 3 – up to 30% mandatory reduction
Stage 4 – up to 40% mandatory reduction
Stage 5 – up to 50% mandatory reduction
Stage 6 – greater than 50% mandatory reduction
10 Conclusions
• City has sufficient supply for serving the existing
community and growth as planned in the City’s
General Plan
• The water supply available to the City is diverse and reliable
• The City has achieved the targeted conservation
required by the State and plans to continue
conservation programs to maintain this goal
11 Questions?
Todd Groundwater contacts: Arden Wells, Maureen Reily
City contacts: Kirk Gonzalez, Christopher Alakel, Robert Devaney UWMP and WSCP – Next Steps
• Council Adoption of UWMP at end of this Public
Hearing. WSCP adopted in 2021.
• Make adopted UWMP and WSCP available to the public
• Submit to DWR, San Luis Obispo County, and California State Library
• Continue implementation of UWMP and Demand
Management Measures
• Conduct Annual Water Supply and Demand
Assessments by July 1 of each year
• 2030 next UWMP
13 Proposed Changes for Final UWMP
14 • Updates
o Update Public hearing and presentation dates (Sections 2.2 and
10.1)
o Final dates on cover and title page of UWMP
• Corrections and Clarifications
Proposed Changes for Final UWMP
(continued)
15 • Corrections and Clarifications (continued)