City Council and Authorities Concurrent
June 23, 2026

Name of Action
Edu cation and Outreach
Technical Assistance
Regulatory Requirements
W at er Quality & Reliability
Improvements
Regional Planning &
Part nerships
below but will provide narrat ive explanation.

Provide page location of narr ative in the UWMP
Descript ion
Educate residents and busin esses on recycled w ater
benef its t hro ugh outreach campaigns, environmental
fairs, and l}artn ershi ps wit h local organizations.

Provide t echnical support for system design, retrof its, landscaping, and regulatory permitting to facilitat e
recycled wat er adoptio n.

Require t he use of recycled wat er for irrigatio n and other non-pot able uses where available, feasible, and
compliant wit h standards.

Supply high-quali ty, consistent recycled w ater to
reduce costs and impro ve performance for industrial
and landscape applicatio ns.

Participate in regional w ater reuse planning to expand recycled wat er use, enhance syst em reli ability, and
promote pot able reuse init iat ives.

Planned Implementation Year
2026
2026
2026
2026
2026
Total (AF)
Unit Conversion to AF
Expected Increase in Recyd ed Water
Use (AF)
2,146
0 0
0 0
2,146
2,146
NOTES: The expected increase in recycled wat er fo r t he f irst action represents t he tot al projected in crease from current to fut ure recycled wat er use. This increase is attr ibutable to all t he actions listed above and oth er applicable actions and is diffic ult to allocate among th em in dividually.

Section 6.7 in Page 6-18
and 6-19
Drop Down
List
(yes/no)
If Yes, Supplier Name
Planned for Use in
Year Type
Drop Down List
NOTES:

Submittal Table 6-7 Retail: Expected Future Water Supply Projects or Programs Water Code Section 10631(f)
DWR NOTES:

Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure reported in Submittal Table 2-3.

Check the box if some or all of the supplier's future water supply projects or programs are not compatible with this table and are described in a narrative format.

Check the box if there are no expected future water supply projects or programs that provide a quantifiable increase to the agency's water supply.

Proceed to the next table.

Planned
Implementation
Year
Add additional rows as needed
Joint Project with other suppliers? Expected
Increase in
Water Supply
to Supplier
(This may be a
range) (AF)
Provide page location of narrative in the UWMP
Name of Future Projects
or Programs
Additional Description
(as needed)
Potable or Non-Potable
(after treatment if treated)
(OPTIONAL)
Drop Down list
Water Supply
Drop down list
May use each category multiple times.

These are the only water supply
categories that will be recognized by the
WUEdata online submittal tool
Potable or Non-Potable
(after treatment if treated)
(OPTIONAL)
Drop Down list
Actual Volume
(AF)
Total Entitlement
(OPTIONAL)
See 'DWR Notes' below
(AF)
Purchased or Imported Water SFPUC Potable 3,229
Purchased or Imported Water Valley Water Potable 2,590
Groundwater (not desalinated) Potable 11,038
Recycled Water Non-Potable 3,871
16,857
3,871
20,728
Submittal Table 6-8 Retail: Water Supplies — Actual
Water Code Section 10631 (b)
2025
NOTES:

DWR NOTES:

Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.

Total Entitlement: e.g. Water Right, Groundwater Allocation, Contracted Amount.

Total
Subtotal Potable
Subtotal Non-Potable
Additional Description
(as needed)

Submittal Table 6-9 Retail: Water Supplies - Projected
Water Code Section 10631 (b)
Water Supply
Drop down I.st Addltional
M a{ use each category multiple times. D eta il o n
These are the only w ater 9Jpplycategories Water Supply that will be recognized bf the WUEdcta
Potable or Non-Potable
(after treatment if t reated)
{OPTIONAL)
Drop Dow n list
Total Entitlement Reasonably
Available
(OPTIONAL)
online submittal tool See 'DWR Not es'
Volum e (AF) below (AF)
Purchased or Imported Wat er SFPUC Pot able 5,041
Purchased or Imported Wat er Valley Water Pot able 4,560 Groundwater (not desalinated} Wells Pot able 23,048
Rec led Wat er SBWR Non-Potable 4, 300
Subtotal Potab 32,649
Subtotal N on-Potabl 4, 300
Total 36, 949
DWR NOTES:

Units of measure (AF, CCF, MG) must remain consistent throughoutth e UWM Pas reported in submitt al Table 2-3.

Total Entitlement: e .. Wat er Ri ht Groundw at er Allocation Contract ed Amount.

Reasonably
Available
Volum e (AF)
5,041
4,560
23,048
4,729
32,649
4,729
37, 378
NOTES: The supply from SFPUC is assumed to be terminated beginning in 2040 due to contract termination in 2028 .

Projected Water Supply (Report to the Extent Practicable ) 2050 (opt)
Tot al Entitlement Reasonably Total Entitlement Reasonably Total Entit lement Reasonably (OPTIONAL) (OPTIONAL) (OPTIONAL) (OPTIONAL) See 'DWR Not es' Available See 'DWR Not es' Available See 'DWR Not es' Available see' DWR Not es' below (AF) Volum e (AF) below (AF) Volum e (AF) below (AF) Volume (AF) below (AF) 0 0 0
4,560 4,560 4,560
23,048 23,048 23,048
5,159 5,588 6,017
27, 608 27,608 27,608
5,159 5,588 6,017
32,767 33,196 33, 625

Water Delivery Product
drop down list
(If delivering more than one type of product recommend using Table O-1C)
Retail Potable
Deliveries
Start Date of Reporting Period 1/1/2025
End Date of Reporting Period 12/31/2025
Is upstream embedded energy in the values reported? No
Units of Measure for Water AF Total Utility
See DWR NOTES Hydropower Net Utility
16,857 16,857 3,762,798 3,762,798
685 - 685 Quantity of Self-Generated Renewable Energy
0 kWh
Data Quality (Estimate, Metered Data, Combination of Estimates and Metered Data) Metered Data
Data Quality Narrative:

Narrative:

Optional Submittal Table O-1B: Recommended Energy Reporting - SINGLE DELIVERY PRODUCT - TOTAL UTILITY APPROACH Metered Data
Only for Water Delivery Products Under the Urban Water Supplier's Operational Control Sum of All Water Management
Processes Non-Consequential Hydropower
DWR NOTES:

Total Utility:The volume of water entered in the “Total Utility” column should equal the volume of water entering the distribution system (excluding recycled water); in most cases, this is the total volume calculated in UWMP Table 4-1: 2025 Actual Total Uses for Potable and Non-Potable Water. Note if recycled water is included in your Submittal Table 4-1, you must exclude it from your volume in this table.

NOTES:

Power at the well and tank pump stations
Volume of Water Entering Process
Energy Consumed (kWh)
Energy Intensity (kWh/vol. converted to MG)

Optional Submittal Table 7-1 Retail: Basis of Water Year Data (Reliability Assessment) Year Type
Average Year
Single-Dry Year
Consecutive Dry Years 1st Year
Consecutive Dry Years 2nd Year
Consecutive Dry Years 3rd Year
Consecutive Dry Years 4th Year
Consecutive Dry Years 5th Year
Base Year
If not using a
calendar year, type
in the last year of
the fiscal, w ater
year, or range of
years, for e.xample,
w ater year 2024-
2025, use 2025
Availabl e Suppli es if
Year Type Repeats
Check the box if quantification of available supplies
D is not compatible with this table and is provided
elsewhere in the UWMP.
location: [insert location fro m UWMP)
Quanti f ication of available suppli es is provided in thi s table as eith er volume only, perce nt only, or both.

Volume Available (AF) % of Average Supply
23,048 100%
23,048 100%
23,048 100%
23,048 100%
23,048 100%
23,048 100%
23,048 100%
DWR NOTES: Supplier may use mult iple versions of Submittal Table 7-1 R if different water sources have different base years and the supplier choose-.s to report the base years for each water source separately. If a Supplier uses multiple versions of Submittal Table 7-1 R, in the "Note" sect ion of each submittal table, state that mu lt iple versions of Submittal Table 7-1 Rare being used and identify the particular water source that is being reported in each submittal table.

Unit s of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2·3. This table reports the units of measure reported in Submittal Table 2·3.

NOTES: Projected groundwater supplies are based on the City's hist orical maximum annual groundwater production in Fi sail Year (FY) 1986/ 87. The v alues shown in the table only r eflect the City's ground water supplies and the City's other supplies are discus.sed in Section 7.3 of the UWMP.

2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 (AF)
Supply totals
(autofill from Submittal Table 6-
9 R)
36,949 37,378 32,767 33,196 33,625
Use totals
(autofill from Submittal Table 4-
2 R)
22,688 24,650 26,611 28,573 30,533
Surplus/(shortfall) 14,261 12,728 6,156 4,623 3,092
WSCP - supply augmentation
benefit
WSCP - use reduction savings
benefit
Revised Surplus/(shortfall)
OPTIONAL Planned WSCP Actions
Submittal Table 7-2 Retail: Normal Year Supply and Use Comparison Water Code Section 10635 (a)
NOTES:

The results correspond to Scenario 1, which assumes SFPUC supply reductions under the Bay-Delta Plan Amendment and the termination of SFPUC supplies beginning in 2040.

DWR NOTES : Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.

Supply totals 35,379 35,713 32,767 33,196 33,625
Use totals 22,688 24,650 26,611 28,573 30,533
Surplus/(shortfall) 12,691 11,063 6,156 4,623 3,092
WSCP - supply
augmentation benefit
WSCP - use reduction
savings benefit
Revised Surplus/(shortfall)
Submittal Table 7-3 Retail: Single Dry Year Supply and Use Comparison Water Code Section 10635(a)
OPTIONAL Planned WSCP Actions
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF)
DWR NOTES : Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.

NOTES:

The results correspond to Scenario 1, which assumes SFPUC supply reductions under the Bay- Delta Plan Amendment and the termination of SFPUC supplies beginning in 2040. 2050 (AF)
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 (AF)
Supply totals 35,379 35,713 32,767 33,196 33,625
Use totals 22,688 24,650 26,611 28,573 30,533
Surplus/(shortfall) 12,691 11,063 6,156 4,623 3,092
Supply totals 34,821 35,214 32,767 33,196 33,625
Use totals 22,688 24,650 26,611 28,573 30,533
Surplus/(shortfall) 12,133 10,564 6,156 4,623 3,092
Supply totals 34,821 35,214 32,767 33,196 33,625
Use totals 22,688 24,650 26,611 28,573 30,533
Surplus/(shortfall) 12,133 10,564 6,156 4,623 3,092
Supply totals 34,593 35,214 32,767 32,968 33,397
Use totals 22,688 24,650 26,611 28,573 30,533
Surplus/(shortfall) 11,905 10,564 6,156 4,395 2,864
Supply totals 34,593 35,214 32,767 32,968 33,397
Use totals 22,688 24,650 26,611 28,573 30,533
Surplus/(shortfall) 11,905 10,564 6,156 4,395 2,864
NOTES:

The results correspond to Scenario 1, which assumes SFPUC supply reductions under the Bay-Delta Plan Amendment and the termination of SFPUC supplies beginning in 2040.

First year
Second year
Third year
Fifth year
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.

Fourth year
Submittal Table 7-4 Retail: Multiple Dry Years Supply and Use Comparison Water Code Section 10635(a)

2026 Total
Total Water Use (AF) 21,120
Total Supplies (AF) 34,821
Surplus/Shortfall w/o WSCP Action 13,701
2027 Total
Total Water Use (AF) 21,512
Total Supplies (AF) 34,906
Surplus/Shortfall w/o WSCP Action 13,394
2028 Total
Total Water Use (AF) 21,905
Total Supplies (AF) 34,992
Surplus/Shortfall w/o WSCP Action 13,087
2029 Total
Total Water Use (AF) 22,297
Total Supplies (AF) 34,850
Surplus/Shortfall w/o WSCP Action 12,553
2030 Total
Total Water Use (AF) 22,689
Total Supplies (AF) 34,936
Surplus/Shortfall w/o WSCP Action 12,247
NOTES:

DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.

Submittal Table 7-5 Retail: Five-Year Drought Risk Assessment Water Code Section 10635(b)(3)
City Name 60 Day Notice
Drop Down (yes/no)
Notice of Public
Hearing
Drop Down (yes/no)
Santa Clara Yes Yes
County Name
Drop Down List
60 Day Notice
Drop Down (yes/no)
Notice of Public
Hearing
Drop Down (yes/no)
Santa Clara County Yes Yes
Submittal Table 10-1 Retail: Notification to Cities and Counties Water Code Section 10621(b) and 10642
NOTES:

DWR 2025 Urban Water Management Plan Checklist

Appendix C

Appendix C
UWMP Checklist

N-C-1078-60-23-01
C-1 City of Santa Clara
2025 Urban Water Management Plan

Retail
x = required
2025
Guidebook
Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal Table
2025 UWMP
Location
x Chapter 1 10615 A plan shall describe and evaluate sources of supply, reasonable and practical efficient uses, reclamation and demand
management activities.

Introduction and
Overview
n/a Executive
Summary
x Chapter 1 10630.5 Each plan shall include a simple description of the Supplier’s plan including water availability, future requirements, a strategy for meeting needs, and other pertinent information.

Additionally, a Supplier may also choose to include a simple description at the beginning of each chapter.

Plan Preparation n/a Executive
Summary
x Section 2.1 10620(b) Every person that becomes a Supplier shall adopt UWMP within one year after it has become a Supplier.

Plan Preparation n/a n/a

x Section 2.5 10644 Supplier shall report the Public Water Systems number, volume of delivered water, and number of connections that are included in this UWMP.

Plan Preparation 2-1 Section 2.1
x Section 2.5 10644 Supplier shall report if this UWMP is an individual UWMP and whether the Supplier belongs to a regional UWMP or regional alliance.

Plan Preparation 2-2 Section 2.2
x Section 2.5 10644 Supplier shall report whether the data is in fiscal or calendar years and the units of measure used for reporting water volumes.

Plan Preparation 2-3 Section 2.3
x Section 2.4 10642 Provide supporting documentation that the Supplier has encouraged active involvement of diverse social, cultural, and economic elements of the population within the service area prior to and during the preparation of the plan and contingency plan.

Plan Preparation n/a Section 2.4
x Section 2.4.2 10620(d)(3) Coordinate the preparation of its plan with other appropriate agencies in the area, including other Suppliers that share a common source, water management agencies, and relevant
public agencies, to the extent practicable.

Plan Preparation n/a Section 2.4.2;
Appendix D

WEST YOST

Appendix C
UWMP Checklist

N-C-1078-60-23-01
C-2 City of Santa Clara
2025 Urban Water Management Plan

Retail
x = required
2025
Guidebook
Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal Table
2025 UWMP
Location
x Section 2.4.1 10631(h) Retail Suppliers will include documentation that they have provided their Wholesale Supplier(s)—if any—with water use projections from that source.

Plan Preparation 2-4 R Section 2.4.1
n/a Section 2.4.1 10631(h) Wholesale Suppliers will provide their Suppliers with identification and quantification of the existing and planned sources of water available from the Wholesale Supplier to the Supplier during various water year types.

Plan Preparation 2-4W n/a
x Chapter 3.0 10631(a) Describe the Supplier service area. System Description n/a Sections 3.1 and

3.2 x Section 3.3 10631(a) Describe the climate of the Supplier’s service area. System Description n/a Section 3.3 x Section 3.4.1 10631(a) Provide the current and projected service area populations for 2030, 2035, 2040, 2045 and optionally 2050.

System Description 3-1 R Section 3.4.1
x Section 3.4.2 10631(a) Describe other social, economic, and demographic factors affecting the Supplier’s water management planning.

System Description n/a Section 3.4.2
x Section 3.5 10631(a) Describe the land uses within the service area… include the current and projected land uses within the existing or
anticipated service area affecting the Supplier’s water management planning. Describe the land uses within the service area.

System Description
and Baselines
n/a Section 3.5
x Sections 4.2.3
and 4.2.4
10631(d)(1) Quantify past, current, and projected water use, identifying the uses among water use sectors.

System Water Use 4-1 R and 4-2 R Sections 4.2.1,

4.2.2 and 4.2.3
x Section 4.3.1 10631(d)(3)(A) Report the distribution system water loss for each of the five years preceding the plan update.

System Water Use 4-5 R Section 4.3
x Section 4.3.2 10631(d)(3)(C) Retail Suppliers shall provide data to show the distribution loss standards were met.

System Water Use 4-6 R Section 4.3
x Section 4.2.5.4 10631.1(a) Include projected water use needed for lower income housing projected in the service area of the Supplier.

System Water Use 4-3 R Sections 4.2.5 and

4.2.6 WEST YOST

Appendix C
UWMP Checklist

N-C-1078-60-23-01
C-3 City of Santa Clara
2025 Urban Water Management Plan

Retail
x = required
2025
Guidebook
Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal Table
2025 UWMP
Location
x Section 4.2.5.3 10631(d)(4)(A) In projected water use, include estimates of water savings from adopted codes, plans, and other policies or laws.

System Water Use 4-3 R Sections 4.2.4 and

4.2.5 x Section 4.2.5.3 10631(d)(4)(B) Provide citations of codes, standards, ordinances, or plans used to make water use projections.

System Water Use 4-3 R Sections 4.2.4,

4.2.5 and 4.2.6
x Section 4.2.5.3 10631(d)(4)(B)(ii) To the extent that a Supplier reports the information described in subparagraph (A), an urban water Supplier shall… Indicate the extent that the water use projections consider savings from codes, standards, ordinances, or transportation and land use plans. Water use projections that do not account for these water savings shall be noted of that fact.

System Water Use 4-3 R Section 4.2.5
x Section 4.2.5.6 10635(b) Demands under climate change considerations must be included as part of the drought risk assessment.

System Water Use n/a Section 4.4
n/a Section 5.1 10608.36 Wholesale Suppliers shall include an assessment of present and proposed future measures, programs, and policies to help their Retail Suppliers achieve targeted water use reductions.

Baselines and
Targets
n/a n/a
x Section 5.2 10608.4 Retail Suppliers shall report on their compliance in meeting their water use targets. Reporting requirements will vary depending on whether the Supplier:
• Was considered an urban retail water supplier in 2020, • Met its 2020 target in 2020, or
• Was part of a merger or consolidation since 2020.

Chapter 5 Subsections 5.2.1, 5.2.2, and 5.2.3 address each of these situations.

Baselines and
Targets
5-1 R Section 5.2
x Section 6.1 10631(b)(2) When multiple sources of water supply are identified, describe the management of each supply in relationship to other
identified supplies.

System Supplies n/a Chapter 6; Sections

6.1, 6.2 and 6.4
x Sections 6.1
and 6.2
10631(b)(1) Provide a discussion of anticipated supply availability under a normal, single dry year, and a drought lasting five years, as well System Supplies n/a Section 6.8 (normal
years); Section 7.2
(dry years)

WEST YOST

Appendix C
UWMP Checklist

N-C-1078-60-23-01
C-4 City of Santa Clara
2025 Urban Water Management Plan

Retail
x = required
2025
Guidebook
Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal Table
2025 UWMP
Location
as more frequent and severe periods of drought, including changes in supply due to climate change.
x Section 6.2.2 10631(b)(4)(C) Indicate whether groundwater is an existing or planned source of water available to the Supplier. If groundwater is identified as an existing or planned source of water… (include) a detailed description and analysis of the location, amount and sufficiency of groundwater pumped by the Supplier for the past five years.

Water Supplies and
Recycled Water
6-1R Sections 6.2 and

6.2.2 x Section 6.2.2 10631(b)(4)(A) Indicate whether a groundwater sustainability plan or groundwater management plan has been adopted by the
Supplier or if there is any other specific authorization for groundwater management. Include a copy of the plan
or authorization.

System Supplies n/a Section 6.2.1
x Section 6.2.2 10631(b)(4)(B) Describe the groundwater basin. System Supplies n/a Sections 6.2 and

6.2.1 x Section 6.2.2 10631(b)(4)(B) Indicate if the basin has been adjudicated and include a copy of the court order or decree and a description of the amount of water the Supplier has the legal right to pump.

System Supplies n/a n/a
x Section 6.2.2 10631(b)(4)(B) For unadjudicated basins… (include) information as to whether DWR has identified the basin as a high- or medium-priority basin in the most current official departmental bulletin…
Water Supplies and
Recycled Water
n/a Sections 6.2 and

6.2.1 x Section 6.2.2 10631(b)(4)(B) For unadjudicated basins… describe efforts by the Supplier to coordinate with sustainability or groundwater agencies to achieve sustainable groundwater conditions.

Water Supplies and
Recycled Water
n/a Section 6.2.1
x Section 6.2.2. 10631(b)(4)(C) If groundwater is identified as an existing or planned source of water… (include) a detailed description and analysis of the location, amount and sufficiency of groundwater pumped by the Supplier for the past five years.

System Supplies n/a Section 6.2.2
x Section 6.2.2 10631(b)(4)(D) Provide a detailed description and analysis of the amount and location of groundwater that is projected to be pumped.

System Supplies 6-9 R Section 6.2.3

WEST YOST

Appendix C
UWMP Checklist

N-C-1078-60-23-01
C-5 City of Santa Clara
2025 Urban Water Management Plan

Retail
x = required
2025
Guidebook
Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal Table
2025 UWMP
Location
x Section 6.1 10631(b) Identify and quantify the existing and planned sources of water available for 2025, 2030, 2035, 2040, 2045 and optionally 2050.

System Supplies 6-8 R and 6-9 R Section 6.8
x Section 6.2.7 10631(c) Describe the opportunities for exchanges or transfers of water on a short-term or long-term basis.

System Supplies n/a Section 6.6
x Section 6.2.5 10633(a) Describe the wastewater collection and treatment systems in the Supplier’s service area with quantified amount of collection and treatment and the disposal methods.

System Supplies
(Recycled Water)
6-2 R Section 6.4.2
x Section 6.2.5 10633(b) Describe the quantity of treated wastewater that meets recycled water standards, is being discharged, and is otherwise available for use in a recycled water project.

System Supplies
(Recycled Water)
6-3 R Section 6.4.3
x Section 6.2.5 10633(c) Describe the recycled water currently being used in the Supplier's service area.

System Supplies
(Recycled Water)
6-4 R Section 6.4.4
x Section 6.2.5 10633(d) Describe and quantify the potential uses of recycled water and provide a determination of the technical and economic
feasibility of those uses.

System Supplies
(Recycled Water)
6-4 R Sections 6.4.4

x Section 6.2.5 10633(e) Describe the projected use of recycled water within the Supplier's service area at the end of 5, 10, 15, and 20 years, and describe the actual use of recycled water in comparison to uses previously projected.

System Supplies
(Recycled Water)
6-4R and 6-5 R Section 6.4.4
x Section 6.2.5 10633(f) Describe the actions that may be taken to encourage the use of recycled water and the projected results of these actions in terms of acre-feet of recycled water used per year.

System Supplies
(Recycled Water)
6-6 R Section 6.4.4
x Section 6.2.5 10633(g) Provide a plan for optimizing the use of recycled water in the Supplier's service area.

System Supplies
(Recycled Water)
n/a Section 6.4.4
x Section 6.2.6 10631(g) Describe desalinated water project opportunities for long-term supply.

System Supplies 6-7 R Section 6.5
x Section 6.2.10 10631(f) Describe the expected future water supply projects and programs that may be undertaken by the water Supplier to System Supplies 6-7 R Section 6.7

WEST YOST

Appendix C
UWMP Checklist

N-C-1078-60-23-01
C-6 City of Santa Clara
2025 Urban Water Management Plan

Retail
x = required
2025
Guidebook
Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal Table
2025 UWMP
Location
address water supply reliability in average, single-dry, and for a period of drought lasting five consecutive water years. x Section 6.3 and
Appendix O
10631.2(a) The UWMP must include energy information, as stated in the code, that a Supplier can readily obtain.

System Suppliers,
Energy Intensity
O-1B Section 6.12
x Section 7.1 10634 Provide information on the quality of existing sources of water available to the Supplier and the manner in which water quality affects water management strategies and supply reliability.

Water Supply
Reliability
Assessment
n/a Section 7.1
x Section 7.2 10635(a) Service Reliability Assessment: Assess the water supply reliability during normal, dry, and a drought lasting five consecutive water years by comparing the total water supply sources available to the Supplier with the total projected water use over the next 20 years.

Water Supply
Reliability
Assessment
7-2 R, 7-3 R, and
7-4 R

Section 7.4
x Section 7.2.3 10620(f) Describe water management tools and options to maximize resources and minimize the need to import water from other regions.

Water Supply
Reliability
Assessment
n/a Section 7.2.1.3,

7.2.1.4, 7.2.2, and
Section 6.7
x Section 7.3 10635(b) Provide a drought risk assessment as part of information considered in developing the demand management measures and water supply projects.

Water Supply
Reliability
Assessment
n/a Section 7.5
x Section 7.3 10635(b)(1) Include a description of the data, methodology, and basis for one or more supply shortage conditions that are necessary to conduct a drought risk assessment for a drought period that lasts five consecutive years.

Water Supply
Reliability
Assessment
n/a Section 7.5.1
x Section 7.3 10635(b)(2) Include a determination of the reliability of each source of supply under a variety of water shortage conditions.

Water Supply
Reliability
Assessment
n/a Section 7.5.2
x Section 7.3 10635(b)(3) Include a comparison of the total water supply sources available to the Supplier with the total projected water use for the drought period.

Water Supply
Reliability
Assessment
7-5 R Section 7.5.3

WEST YOST

Appendix C
UWMP Checklist

N-C-1078-60-23-01
C-7 City of Santa Clara
2025 Urban Water Management Plan

Retail
x = required
2025
Guidebook
Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal Table
2025 UWMP
Location
x Section 7.3 10635(b)(4) Include considerations of the historical drought hydrology, plausible changes on projected supplies and demands under climate change conditions, anticipated regulatory changes, and other locally applicable criteria.

Water Supply
Reliability
Assessment
n/a Section 7.5
x Chapter 8 10632(a) Provide a water shortage contingency plan (WSCP) with specified elements below.

Water Shortage
Contingency
Planning
n/a Appendix G
x Chapter 8 10632(a)(1) Provide an analysis of water supply reliability (from Guidebook Chapter 7) in the WSCP.

Water Shortage
Contingency
Planning
n/a Section 8.3;
Appendix G
(Section 2)
x Section 8.2 10632(a)(2)(A) Provide the written decision-making process and other methods that the Supplier will use each year to determine its water reliability.

Water Shortage
Contingency
Planning
n/a Appendix G
(Section 3)
x Section 8.2 10632(a)(2)(B) Provide data and methodology to evaluate the Supplier’s water reliability for the current year and one dry year pursuant to factors in the code.

Water Shortage
Contingency
Planning
n/a Appendix G
(Section 3.2 and

3.3)
x Section 8.3 10632(a)(3)(A) Define six standard water shortage levels of 10%, 20%, 30%, 40%, 50% shortage, and greater than 50% shortage. These levels shall be based on supply conditions, including percent
reductions in supply, changes in groundwater levels, changes in surface elevation, or other conditions. The shortage levels shall also apply to a catastrophic interruption of supply.

Water Shortage
Contingency
Planning
8-1 Appendix G
(Section 4.0)
x Section 8.3 10632(a)(3)(B) Suppliers with an existing WSCP that uses different water shortage levels must cross reference their categories with the six standard categories.

Water Shortage
Contingency
Planning
8-1 n/a
x Section 8.4 10632(a)(4)(A) Suppliers with WSCPs that align with the defined shortage levels must specify locally appropriate supply augmentation actions.

Water Shortage
Contingency
Planning
8-2 Appendix G
(Section 5.3)

WEST YOST

Appendix C
UWMP Checklist

N-C-1078-60-23-01
C-8 City of Santa Clara
2025 Urban Water Management Plan

Retail
x = required
2025
Guidebook
Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal Table
2025 UWMP
Location
x Section 8.4 10632(a)(4)(B) Specify locally appropriate demand reduction actions to adequately respond to shortages.

Water Shortage
Contingency
Planning
8-3 Appendix G
(Section 5.1)
x Section 8.4 10632(a)(4)(C) Specify locally appropriate operational changes. Water Shortage Contingency
Planning
8-2 Appendix G
(Section 5.4)
x Section 8.4 10632(a)(4)(D) Specify additional mandatory prohibitions against specific water use practices that are in addition to State-mandated prohibitions are appropriate to local conditions.

Water Shortage
Contingency
Planning
8-3 Appendix G
(Section 5.2)
x Section 8.4 10632(a)(4)(E) Estimate the extent to which the gap between supplies and demand will be reduced by implementation of the action.

Water Shortage
Contingency
Planning
8-2 and 8-3 Appendix G
(Sections 5.1 and

5.3)
x Section 8.4.6 10632.5 The UWMP shall include a seismic risk assessment and mitigation plan.

Water Shortage
Contingency Plan
n/a Section 8.4
x Section 8.5 10632(a)(5)(A) Suppliers must describe that they will inform customers, the public and others regarding any current or predicted water shortages.

Water Shortage
Contingency
Planning
n/a Appendix G
(Section 6.0)
x Section 8.5 10632(a)(5)(B),
10632(a)(5)(C)
Suppliers must describe that they will inform customers, the public and others regarding any shortage response actions triggered or anticipated to be triggered and other relevant communications.

Water Shortage
Contingency
Planning
n/a Appendix G
(Section 6.0)
x Section 8.6 10632(a)(6) Retail Supplier must describe how it will ensure compliance with and enforce provisions of the WSCP.

Water Shortage
Contingency
Planning
n/a Appendix G
(Section 7.0)
x Section 8.7 10632(a)(7)(A) Describe the legal authority that empowers the Supplier to enforce shortage response actions.

Water Shortage
Contingency
Planning
n/a Appendix G
(Section 8.0)

WEST YOST

Appendix C
UWMP Checklist

N-C-1078-60-23-01
C-9 City of Santa Clara
2025 Urban Water Management Plan

Retail
x = required
2025
Guidebook
Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal Table
2025 UWMP
Location
x Section 8.7 10632(a)(7)(B) Provide a statement that the Supplier will declare a water shortage emergency per Water Code Chapter 3. Water Shortage Emergencies.

Water Shortage
Contingency
Planning
n/a Appendix G
(Section 8.0)
x Section 8.7 10632(a)(7)(C) Provide a statement that the Supplier will coordinate with any city or county within which it provides water for the possible proclamation of a local emergency.

Water Shortage
Contingency
Planning
n/a Appendix G
(Section 8.0)
x Section 8.8 10632(a)(8)(A) Describe the potential revenue reductions and expense increases associated with activated shortage response actions.

Water Shortage
Contingency
Planning
n/a Appendix G
(Section 9.0)
x Section 8.8 10632(a)(8)(B) Provide a description of mitigation actions needed to address revenue reductions and expense increases associated with activated shortage response actions.

Water Shortage
Contingency
Planning
n/a Appendix G
(Section 9.0)
x Section 8.8 10632(a)(8)(C) Retail Suppliers must describe the cost of compliance with Water Code Chapter 3.3, Excessive Residential Water Use During Drought.

Water Shortage
Contingency
Planning
n/a Appendix G
(Section 9.0)
x Section 8.9 10632(a)(9) Retail Suppliers must describe the monitoring and reporting requirements and procedures that ensure appropriate data are collected, tracked, and analyzed for purposes of monitoring customer compliance.

Water Shortage
Contingency
Planning
n/a Appendix G
(Section 10.0)
x Section 8.10 10632(a)(10) Describe reevaluation and improvement procedures for monitoring and evaluation the WSCP to ensure risk tolerance is adequate and appropriate water shortage mitigation strategies are implemented.

Water Shortage
Contingency
Planning
n/a Appendix G
(Section 11.0)
x Section 8.11 10632(b) Analyze and define water features that are artificially supplied with water, including ponds, lakes, waterfalls, and fountains, separately from swimming pools and spas.

Water Shortage
Contingency
Planning
n/a Appendix G
(Section 5.2.1)
x Section 8.12 10632(c) Make available the WSCP to customers and any city or county where it provides water within 30 days after adoption of the plan.

Water Shortage
Contingency
Planning
n/a Section 8.5;
Appendix G
(Section 12.0)

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Appendix C
UWMP Checklist

N-C-1078-60-23-01
C-10 City of Santa Clara
2025 Urban Water Management Plan

Retail
x = required
2025
Guidebook
Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal Table
2025 UWMP
Location
x Sections 9.1 10631(e)(1) Retail Suppliers shall provide a description of the nature and extent of each demand management measure implemented
over the past five years. The description will address specific measures listed in code.

Demand
Management
Measures
n/a Section 9.1
x Chapter 10 10608.26(a) Retail Suppliers shall conduct a public hearing to discuss adoption, implementation, and economic impact of water use targets (recommended to discuss compliance).

Plan Adoption,
Submittal, and
Implementation
n/a Section 10.3.1
x Section 10.2.1 10621(b) Notify, at least 60 days prior to the public hearing, any city or county within which the Supplier provides water that the Supplier will be reviewing the UWMP and considering
amendments or changes to the plan.

Plan Adoption,
Submittal, and
Implementation
10-1 Section 10.2.1
x Section 10.4 10621(f) Each urban water Supplier shall update and submit its 2025 plan to DWR by July 1, 2026.

Plan Adoption,
Submittal, and
Implementation
n/a Section 10.4
x Sections 10.2.2,

10.3, and 10.5
10642 Provide supporting documentation that the Supplier made the UWMP and WSCP available for public inspection, published notice of the public hearing, and held a public hearing about the UWMP and WSCP.

Plan Adoption,
Submittal, and
Implementation
n/a Sections 10.2 and

10.3; Appendix D
x Section 10.2.2 10642 The Supplier is to provide the time and place of the hearing to any city or county within which the Supplier provides water.

Plan Adoption,
Submittal, and
Implementation
10-1 Section 10.3;
Appendix D
x Section 10.3.2 10642 Provide supporting documentation that the UWMP and WSCP has been adopted as prepared or modified.

Plan Adoption,
Submittal, and
Implementation
n/a Section 10.3;
Appendix H
x Section 10.4 10644(a) Provide supporting documentation that the Supplier has submitted their UWMP to the California State Library.

Plan Adoption,
Submittal, and
Implementation
n/a Section 10.4

WEST YOST

Appendix C
UWMP Checklist

N-C-1078-60-23-01
C-11 City of Santa Clara
2025 Urban Water Management Plan

Retail
x = required
2025
Guidebook
Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal Table
2025 UWMP
Location
x Section 10.4 10644(a)(1) Provide supporting documentation that the Supplier has submitted their UWMP to any city or county within which the Supplier provides water no later than 30 days after adoption.

Plan Adoption,
Submittal, and
Implementation
n/a Section 10.4
x Sections 10.4.1
and 10.4.2
10644(a)(2) The UWMP, or amendments to the UWMP, submitted to DWR shall be submitted electronically.

Plan Adoption,
Submittal, and
Implementation
n/a Section 10.4
x Section 10.7.2 10644(b) If revised, submit a copy of the WSCP to DWR within 30 days of adoption.

Plan Adoption,
Submittal, and
Implementation
n/a Section 10.7
x Section 10.5 10645(a) Provide supporting documentation that, not later than 30 days after filing a copy of its UWMP with DWR, the Supplier has or will make the plan available for public review during normal business hours.

Plan Adoption,
Submittal, and
Implementation
n/a Section 10.5
x Section 10.5 10645(b) Provide supporting documentation that, not later than 30 days after filing a copy of its WSCP with DWR, the Supplier has or will make the plan available for public review during normal business hours.

Plan Adoption,
Submittal, and
Implementation
n/a Section 10.5

WEST YOST

Agency and Public Notices

Appendix D
1 Elizabeth
Drayer
From: Lawrence Ta
m <[email protected]>
Sent: Tuesday, February 3, 2
026 4:47 PM
To: laura.hidas@a
cwd.com; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; Craig Centis; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; Provenzano, Jeffrey; Harvie, Nicole; [email protected]; [email protected]; [email protected]; Tom Smegal; Tom Francis; Danielle McPherson; Negin Ashoori; Kyle Ramey; Christina Tang; [email protected]; [email protected]; Kastama, Alison A; [email protected]; [email protected]; [email protected] Cc:

John Ramirez; W
endy Kwong; Elizabeth Drayer; Whitney Jones; Lu Wang
Subject: City of Santa Clara
- Notice of Preparation of 2025 UWMP and Water Shortage Contingency Plan

Dear Stak
eholders,
The Urban Water Management Plan Act (California Water Code §10608 & §10610-10656) requires all urban water suppliers providing water for municipal purposes to more than 3,000 customers or serving more than 3,000 acre- feet annually, to update its Urban Water Management Plan (UWMP) every five years. The City is cur rently preparing
the 20
25 UWMP and Water Shortage Contingency Plan (WSCP) which are due by July 1, 2026. We invite your Agency’s participation in this revision process.

Draft documents of the 2025 UWMP and WSCP and will be made available for public review and a public hearing will be scheduled in late spring 2026. In the meantime, if you would like more information on our 2025 UWMP or WSCP, the process for updating these reports, or have additional questions please contact me.

Thanks,

Lawrence
Tam
Acting Assistan
t Director | Water & Sewer Utilities
1500 War
burton Avenue | Santa Clara, CA 95050
Direct: 408-
615-2036 | [email protected]

SANTA CLARA

Distribution System Water Loss Audits

Appendix E
Water Audit Report for:

Reporting Year:

All volumes to be entered as: MILLION GALLONS (US) PER YEAR Master Meter and Supply Error Adjustments
WATER SUPPLIED Pcnt: Value:

Volume from own sources: 5 3,530.200 MG/Yr 3 MG/Yr
Water imported: 5 2,433.100 MG/Yr 5 1.10% MG/Yr
Water exported: n/a MG/Yr MG/Yr
Enter negative % or value for under-registration
WATER SUPPLIED: 5,936.827 MG/Yr Enter positive % or value for over-registration .

AUTHORIZED CONSUMPTION
Billed metered: 7 5,540.200 MG/Yr
Billed unmetered: n/a MG/Yr
Unbilled metered: n/a MG/Yr Pcnt: Value:

Unbilled unmetered: 5 14.842 MG/Yr 1.25% MG/Yr24061
AUTHORIZED CONSUMPTION: 5,555.042 MG/Yr
WATER LOSSES (Water Supplied - Authorized Consumption) 381.785 MG/Yr Apparent Losses Pcnt: Value:

Unauthorized consumption: 14.842 MG/Yr 0.25% MG/Yr
Customer metering inaccuracies: 3 84.369 MG/Yr 1.50% MG/Yr Systematic data handling errors: 5 13.851 MG/Yr 0.25% MG/Yr Apparent Losses: 113.061 MG/Yr
Real Losses (Current Annual Real Losses or CARL)
Real Losses = Water Losses - Apparent Losses: 268.724 MG/Yr WATER LOSSES: 381.785 MG/Yr

NON-REVENUE WATER
NON-REVENUE WATER: 396.627 MG/Yr
= Water Losses + Unbilled Metered + Unbilled Unmetered

SYSTEM DATA
Length of mains: 9 306.0 miles
Number of active AND inactive service connections: 9 25,828 Service connection density: 84 conn./mile main
Yes
Average length of customer service line: ft
Average operating pressure: 5 64.2 psi

COST DATA
Total annual cost of operating water system: 10 $48,062,201 $/Year Customer retail unit cost (applied to Apparent Losses): 10 $6.57 Variable production cost (applied to Real Losses): 6 $4,840.64 $/Million gallons WATER AUDIT DATA VALIDITY SCORE:

PRIORITY AREAS FOR ATTENTION:
1: Volume from own sources
2: Water imported
3: Customer metering inaccuracies
Are customer meters typically located at the curbstop or property line? Based on the information provided, audit accuracy can be improved by addressing the following components:
$/100 cubic feet (ccf)
Default option selected for unauthorized consumption - a grading of 5 is applied but not displayed *** YOUR SCORE IS: 62 out of 100 ***
A weighted scale for the components of consumption and water loss is included in the calculation of the Water Audit Data Validity Score Default option selected for Systematic data handling errors - a grading of 5 is applied but not displayed Average length of customer service line has been set to zero and a data grading score of 10 has been applied AWWA Free Water Audit Software:

Reporting Worksheet

14.842
2020 1/2020 - 12/2020
City of Santa Clara - Water & Sewer Utilities (CA4310012) <----------- Enter grading in column 'E' and 'J' ----------> ?
?
?
?
?
? Click to access definition
?
?
?
?
?
?
Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input data by grading each component (n/a or 1-10) using the drop-down list to the left of the input cell. Hover the mouse over the cell to obtain a description of the grades ?
?
?
?
?
?
(length of service line, beyond the property
boundary, that is the responsibility of the utility)
Use buttons to select
percentage of water
supplied
OR
value
?Click here:
for help using option
buttons below
?
?
?
?
+
+ Click to add a comment
WAS v5.0
+
+
+
+
+
+
American Water Works Association.

Copyright © 2014, All Rights Reserved.
?
?
?
+
+
+
+
+
+
+
+
+
+
+
+
+
Use Customer Retail Unit Cost to value real losses
?
To select the correct data grading for each input, determine the highest grade where the utility meets or exceeds all criteria for that grade and all grades below it.

AWWA Free Water Audit Software v5.0 Reporting Worksheet 1 ~
: -1---
I
11§1--1 -----I
I I
--------------~ -= l~--~I
I I
-- l~--~I
::E I If------------<
.._____ I __ _____.I
- l'="======.:::::I --------------- 1 I
I !B 1--1 ---------i
I I
--
I
!!§f-1 -+I ~E-U-i---------1
-
u :, C•lll
t
t
I I (e l ( lll I
55§f-l---~1 1'-------~□------------'1
I I
I I
I I
I I
Water Audit Report for:

Reporting Year:

All volumes to be entered as: MILLION GALLONS (US) PER YEAR Master Meter and Supply Error Adjustments
WATER SUPPLIED Pcnt: Value:

Volume from own sources: 5 3,198.300 MG/Yr 3 MG/Yr
Water imported: 5 2,444.400 MG/Yr 5 1.10% MG/Yr
Water exported: n/a MG/Yr MG/Yr
Enter negative % or value for under-registration
WATER SUPPLIED: 5,616.104 MG/Yr Enter positive % or value for over-registration .

AUTHORIZED CONSUMPTION
Billed metered: 7 5,306.132 MG/Yr
Billed unmetered: n/a MG/Yr
Unbilled metered: n/a MG/Yr Pcnt: Value:

Unbilled unmetered: 5 70.201 MG/Yr 1.25% MG/Yr24061
AUTHORIZED CONSUMPTION: 5,376.333 MG/Yr
WATER LOSSES (Water Supplied - Authorized Consumption) 239.771 MG/Yr Apparent Losses Pcnt: Value:

Unauthorized consumption: 14.040 MG/Yr 0.25% MG/Yr
Customer metering inaccuracies: 3 80.804 MG/Yr 1.50% MG/Yr Systematic data handling errors: 5 13.265 MG/Yr 0.25% MG/Yr Apparent Losses: 108.110 MG/Yr
Real Losses (Current Annual Real Losses or CARL)
Real Losses = Water Losses - Apparent Losses: 131.661 MG/Yr WATER LOSSES: 239.771 MG/Yr

NON-REVENUE WATER
NON-REVENUE WATER: 309.972 MG/Yr
= Water Losses + Unbilled Metered + Unbilled Unmetered

SYSTEM DATA
Length of mains: 9 306.0 miles
Number of active AND inactive service connections: 9 25,041 Service connection density: 82 conn./mile main
Yes
Average length of customer service line: ft
Average operating pressure: 5 64.1 psi

COST DATA
Total annual cost of operating water system: 10 $64,766,664 $/Year Customer retail unit cost (applied to Apparent Losses): 10 $6.69 Variable production cost (applied to Real Losses): 6 $5,034.91 $/Million gallons WATER AUDIT DATA VALIDITY SCORE:

PRIORITY AREAS FOR ATTENTION:
1: Volume from own sources
2: Water imported
3: Customer metering inaccuracies
Based on the information provided, audit accuracy can be improved by addressing the following components:
$/100 cubic feet (ccf)
<----------- Enter grading in column 'E' and 'J' ----------> Default option selected for unauthorized consumption - a grading of 5 is applied but not displayed *** YOUR SCORE IS: 62 out of 100 ***
A weighted scale for the components of consumption and water loss is included in the calculation of the Water Audit Data Validity Score Default option selected for Systematic data handling errors - a grading of 5 is applied but not displayed Average length of customer service line has been set to zero and a data grading score of 10 has been applied Are customer meters typically located at the curbstop or property line? AWWA Free Water Audit Software:

Reporting Worksheet
Default option selected for Unbilled unmetered - a grading of 5 is applied but not displayed 2021 1/2021 - 12/2021
City of Santa Clara (CA4310012)
?
?
?
?
?
? Click to access definition
?
?
?
?
?
?
Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input data by grading each component (n/a or 1-10) using the drop-down list to the left of the input cell. Hover the mouse over the cell to obtain a description of the grades ?
?
?
?
?
?
(length of service line, beyond the property
boundary, that is the responsibility of the utility)
Use buttons to select
percentage of water
supplied
OR
value
?Click here:
for help using option
buttons below
?
?
?
?
+
+ Click to add a comment
WAS v5.0
+
+
+
+
+
+
American Water Works Association.

Copyright © 2014, All Rights Reserved.
?
?
?
+
+
+
+
+
+
+
+
+
+
+
+
+
Use Customer Retail Unit Cost to value real losses
?
To select the correct data grading for each input, determine the highest grade where the utility meets or exceeds all criteria for that grade and all grades below it.

AWWA Free Water Audit Software v5.0 Reporting Worksheet 1 ~
: 1.----===== :...._____, I I
11§1 !!~II t~ §:I
I I
II~~ -
I L ce:, { 211 I
-
I I t
I I
t
--
I I I (•2 ( 211
::Ell I ~:) t )l
-
I I
-
I I
I I
-
I I
=!Ell
I I
----□ I
I
55§1 l1 I
□
I I
I I
I I
I I
Water Audit Report for:

Audit Year:

All volumes to be entered as: MILLION GALLONS (US) PER YEAR WATER SUPPLIED choose entry option:

VOS Volume from Own Sources: n g 7 3,365.582 MG/Yr n g 8 0.00% percent MG/Yr under-registration VOSEA WI Water Imported: n g 3 2,145.466 MG/Yr n g 6 1.00% volume MG/Yr under-registration WIEA WE Water Exported: n g n/a MG/Yr n g n/a percent MG/Yr select….. WEEA 5,518.688 MG/Yr
.

AUTHORIZED CONSUMPTION
BMAC Billed Metered: n g 8 5,288.572 MG/Yr
BUAC Billed Unmetered: n g n/a MG/Yr
UMAC Unbilled Metered: n g n/a MG/Yr choose entry option:

UUAC Unbilled Unmetered: n g 3 13.221 MG/Yr 0.25% default MG/Yr24061 Default option selected for Unbilled Unmetered, with automatic data grading of 3 5,301.793 MG/Yr
WATER LOSSES 216.895 MG/Yr
Apparent Losses
Default option selected for Systematic Data Handling Errors, with automatic data grading of 3 choose entry option:

SDHE Systematic Data Handling Errors: n g 3 13.221 MG/Yr 0.25% default MG/Yr CMI Customer Metering Inaccuracies: n g 7 80.537 MG/Yr 1.50% percent MG/Yr under-registration UC Unauthorized Consumption: n g 3 13.221 MG/Yr 0.25% default MG/Yr Default option selected for Unauthorized Consumption, with automatic data grading of 3 106.979 MG/Yr
Real Losses
109.916 MG/Yr
216.895 MG/Yr

NON-REVENUE WATER
230.116 MG/Yr

SYSTEM DATA
Lm Length of mains: n g 8 306.0 miles (including fire hydrant lead lengths) Nc Number of service connections: n g 8 25,829 (active and inactive) Service connection density: 84 conn./mile main
Yes
Lp Average length of (private) customer service line: n g 10 ft (average distance between property line and meter) AOP Average Operating Pressure: n g 7 63.0 psi

COST DATA
CRUC Customer Retail Unit Charge: n g 7 $7.33
VPC Variable Production Cost: n g 8 $5,258.67 $/Million gallons $/yr (optional input) WATER AUDIT DATA VALIDITY TIER:
go to
dashboard
PRIORITY AREAS FOR ATTENTION TO IMPROVE DATA VALIDITY: KEY PERFORMANCE INDICATOR TARGETS:

Based on the information provided, audit reliability can be most improved by addressing the following components: OPTIONAL: If targets exist for the operational performance indicators, they can be input below:
1: Water Imported (WI) Unit Total Losses: gal/conn/day
2: Volume from Own Sources (VOS) Unit Apparent Losses: gal/conn/day 3: Billed Metered (BMAC) Unit Real LossesA: gal/conn/day Unit Real LossesB: gal/mile/day
If entered above by user, targets will display on KPI gauges (see Dashboard) go to start page
NON-REVENUE WATER:

If entering an
Error Adjustment,
select under- or over-
registration
WATER SUPPLIED:

AUTHORIZED CONSUMPTION:

Apparent Losses:

Average length of customer service line has been set to zero and a data grading of 10 has been applied A weighted scale for the components of supply, consumption and water loss is included in the calculation of the Water Audit Data Validity Score *** The Water Audit Data Validity Score is in Tier III (51-70). See Dashboard tab for additional outputs. *** $/100 cubic feet (ccf)
$31,935,522
Total Annual Operating Cost
Are customer meters typically located at the curbstop/property line? AWWA Free Water Audit Software:

Worksheet
City of Santa Clara

7.640
Jan 01 2022 - Dec 31 2022
Water Supplied Error Adjustments
Calendar2022
Real Losses:

WATER LOSSES:

Click 'g' to determine data validity grade
Click 'n' to add notes
FWAS v6.0
American Water Works Association.

Copyright © 2020, All Rights Reserved.

To access definitions, click the input name
To edit water system info:

AWWA Free Water Audit Software v6.0 Worksheet 1
~ I~ EE ,___I -----
EE 1...-------------,
[TI
[TI ,--------,
Water Audit Report for:

Audit Year:

All volumes to be entered as: MILLION GALLONS (US) PER YEAR WATER SUPPLIED choose entry option:

VOS Volume from Own Sources: n g 7 3,398.784 MG/Yr n g 8 0.00% percent MG/Yr under-registration VOSEA WI Water Imported: n g 3 2,034.573 MG/Yr n g 6 1.00% volume MG/Yr over-registration WIEA WE Water Exported: n g n/a MG/Yr n g n/a percent MG/Yr select….. WEEA 5,429.774 MG/Yr
.

AUTHORIZED CONSUMPTION
BMAC Billed Metered: n g 8 4,928.937 MG/Yr
BUAC Billed Unmetered: n g n/a MG/Yr
UMAC Unbilled Metered: n g n/a MG/Yr choose entry option:

UUAC Unbilled Unmetered: n g 3 12.322 MG/Yr 0.25% default MG/Yr24061 Default option selected for Unbilled Unmetered, with automatic data grading of 3 4,941.259 MG/Yr
WATER LOSSES 488.514 MG/Yr
Apparent Losses
Default option selected for Systematic Data Handling Errors, with automatic data grading of 3 choose entry option:

SDHE Systematic Data Handling Errors: n g 3 12.322 MG/Yr 0.25% default MG/Yr CMI Customer Metering Inaccuracies: n g 4 75.060 MG/Yr 1.50% percent MG/Yr under-registration UC Unauthorized Consumption: n g 3 12.322 MG/Yr 0.25% default MG/Yr Default option selected for Unauthorized Consumption, with automatic data grading of 3

99.705 MG/Yr
Real Losses
388.810 MG/Yr
488.514 MG/Yr

NON-REVENUE WATER
500.837 MG/Yr

SYSTEM DATA
Lm Length of mains: n g 10 335.0 miles (including fire hydrant lead lengths) Nc Number of service connections: n g 8 25,759 (active and inactive) Service connection density: 77 conn./mile main
Yes
Lp Average length of (private) customer service line: n g 10 ft (average distance between property line and meter) AOP Average Operating Pressure: n g 7 63.0 psi

COST DATA
CRUC Customer Retail Unit Charge: n g 9 $7.97
VPC Variable Production Cost: n g 8 $6,191.73 $/Million gallons $/yr (optional input) WATER AUDIT DATA VALIDITY TIER:
go to
dashboard
PRIORITY AREAS FOR ATTENTION TO IMPROVE DATA VALIDITY: KEY PERFORMANCE INDICATOR TARGETS:

Based on the information provided, audit reliability can be most improved by addressing the following components: OPTIONAL: If targets exist for the operational performance indicators, they can be input below:
1: Water Imported (WI) Unit Total Losses: gal/conn/day
2: Volume from Own Sources (VOS) Unit Apparent Losses: 18.3 gal/conn/day 3: Customer Metering Inaccuracies (CMI) Unit Real LossesA: 16.3 gal/conn/day Unit Real LossesB: gal/mile/day
If entered above by user, targets will display on KPI gauges (see Dashboard) go to start page
NON-REVENUE WATER:

If entering an
Error Adjustment,
select under- or over-
registration
WATER SUPPLIED:

AUTHORIZED CONSUMPTION:

Apparent Losses:

Average length of customer service line has been set to zero and a data grading of 10 has been applied A weighted scale for the components of supply, consumption and water loss is included in the calculation of the Water Audit Data Validity Score *** The Water Audit Data Validity Score is in Tier III (51-70). See Dashboard tab for additional outputs. *** $/100 cubic feet (ccf)
$51,214,825
Total Annual Operating Cost
Are customer meters typically located at the curbstop/property line? AWWA Free Water Audit Software:

Worksheet
City of Santa Clara

3.583
Jan 01 2023 - Dec 31 2023
Water Supplied Error Adjustments
Calendar2023
Real Losses:

WATER LOSSES:

Click 'g' to determine data validity grade
Click 'n' to add notes
FWAS v6.0
American Water Works Association.

Copyright © 2020, All Rights Reserved.

To access definitions, click the input name
To edit water system info:

AWWA Free Water Audit Software v6.0 Worksheet 1
Ef3 ~I--+----+--
m= If--------------
EF3 1...-----------,
IT]
IT] .----------,
Water Audit Report for:

Audit Year:

All volumes to be entered as: MILLION GALLONS (US) PER YEAR WATER SUPPLIED choose entry option:

VOS Volume from Own Sources: n g 7 3,452.449 MG/Yr n g 8 0.00% volume MG/Yr over-registration VOSEA WI Water Imported: n g 6 2,177.636 MG/Yr n g 6 1.00% volume MG/Yr under-registration WIEA WE Water Exported: n g n/a MG/Yr n g n/a percent MG/Yr select….. WEEA 5,644.888 MG/Yr
.

AUTHORIZED CONSUMPTION
BMAC Billed Metered: n g 8 5,119.711 MG/Yr
BUAC Billed Unmetered: n g n/a MG/Yr
UMAC Unbilled Metered: n g n/a MG/Yr choose entry option:

UUAC Unbilled Unmetered: n g 3 12.799 MG/Yr 0.25% default MG/Yr24061 Default option selected for Unbilled Unmetered, with automatic data grading of 3 5,132.510 MG/Yr
WATER LOSSES 512.377 MG/Yr
Apparent Losses
Default option selected for Systematic Data Handling Errors, with automatic data grading of 3 choose entry option:

SDHE Systematic Data Handling Errors: n g 3 12.799 MG/Yr 0.25% default MG/Yr CMI Customer Metering Inaccuracies: n g 4 77.965 MG/Yr 1.50% percent MG/Yr under-registration UC Unauthorized Consumption: n g 3 12.799 MG/Yr 0.25% default MG/Yr Default option selected for Unauthorized Consumption, with automatic data grading of 3 103.564 MG/Yr
Real Losses
408.814 MG/Yr
512.377 MG/Yr

NON-REVENUE WATER
525.177 MG/Yr

SYSTEM DATA
Lm Length of mains: n g 10 335.0 miles (including fire hydrant lead lengths) Nc Number of service connections: n g 8 26,026 (active and inactive) Service connection density: 78 conn./mile main
Yes
Lp Average length of (private) customer service line: n g 10 ft (average distance between property line and meter) AOP Average Operating Pressure: n g 7 63.0 psi

COST DATA
CRUC Customer Retail Unit Charge: n g 7 $7.97
VPC Variable Production Cost: n g 8 $6,987.77 $/Million gallons $/yr (optional input) WATER AUDIT DATA VALIDITY TIER:
go to
dashboard
PRIORITY AREAS FOR ATTENTION TO IMPROVE DATA VALIDITY: KEY PERFORMANCE INDICATOR TARGETS:

Based on the information provided, audit reliability can be most improved by addressing the following components: OPTIONAL: If targets exist for the operational performance indicators, they can be input below:
1: Volume from Own Sources (VOS) Unit Total Losses: gal/conn/day 2: Water Imported (WI) Unit Apparent Losses: 18.3 gal/conn/day 3: Customer Metering Inaccuracies (CMI) Unit Real LossesA: 16.3 gal/conn/day Unit Real LossesB: gal/mile/day
If entered above by user, targets will display on KPI gauges (see Dashboard) Are customer meters typically located at the curbstop/property line? AWWA Free Water Audit Software:

Worksheet

7.396
City of Santa Clara

14.803
Jan 01 2024 - Dec 31 2024
Water Supplied Error Adjustments
Calendar2024
Real Losses:

WATER LOSSES:

Average length of customer service line has been set to zero and a data grading of 10 has been applied A weighted scale for the components of supply, consumption and water loss is included in the calculation of the Water Audit Data Validity Score *** The Water Audit Data Validity Score is in Tier III (51-70). See Dashboard tab for additional outputs. *** $/100 cubic feet (ccf)
$62,193,191
Total Annual Operating Cost
go to start page
NON-REVENUE WATER:

If entering an
Error Adjustment,
select under- or over-
registration
WATER SUPPLIED:

AUTHORIZED CONSUMPTION:

Apparent Losses:

Click 'g' to determine data validity grade
Click 'n' to add notes
FWAS v6.0
American Water Works Association.

Copyright © 2020, All Rights Reserved.

To access definitions, click the input name
To edit water system info:

AWWA Free Water Audit Software v6.0 Worksheet 1
EF3
m= If--------------
EF3 I,___________...

IT]
IT] .-------------,

SFPUC and Valley Water Water Supply Reliability

Appendix F

155 Bovet Road, Suite 650 ⚫ San Mateo, CA 94402 ⚫ ph 650 349 3000 ⚫ fx 650 349 8395 ⚫ www.bawsca.org

March 11, 2026

TO: BAWSCA Member Agencies

FROM: Danielle McPherson, Senior Water Resources Specialist Tom Francis, Water Resources Manager

SUBJECT: San Francisco Regional Water System Supply Reliability for 2025 Urban Water Management Plans

On March 11, 2026, the San Francisco Public Utilities Commission (SFPUC) provided a letter with analysis on the Regional Water System (RWS) supply reliability for use in your 2025 Urban Water Management Plans (UWMPs). This memorandum transmits that letter (Attachment A) and provides additional context regarding individual agency cutbacks outlined in Attachment B.

Regulatory and Demand Scenarios
To account for the ongoing uncertainty surrounding the State Water Resources Control Board’s Bay-Delta Plan Amendment, the SFPUC modeled water supply reliability under two regulatory scenarios and two demand scenarios:

• Regulatory Scenarios:

1. With implementation of the Bay-Delta Plan Amendment.

2. Without implementation of the Bay-Delta Plan Amendment.

• Demand Scenarios:

1. Projected SFPUC retail demand and Wholesale Customer purchases for 2030-2050.

2. Projected SFPUC retail demand for 2050 and the Wholesale Customer Supply Assurance of 184 MGD.

Key Findings and Impacts on Allocation
Attachment B provides specific cutbacks for each agency based on Demand Scenario 1 (projected RWS demand). Please note the following critical impacts on how these shortages are managed:

• Extreme Shortages Under Bay-Delta Implementation: Under the "With Bay- Delta Plan" scenario, system-wide cutbacks exceed the SFPUC’s Level of Service Goal to limit system-wide cutbacks to 20% or less. In these instances, the Water Supply Agreement (WSA) allows for negotiated allocations between Bay Area Water Supply & Conservation Agency
March 11, 2026

retail and Wholesale Customers collectively. In the absence of a negotiated agreement, SFPUC has applied the Tier 1 split for a system-wide cutback up to 20%.
• Application of the Tier 2 Plan: The Tier 2 Drought Response Implementation Plan only applies during system-wide shortages of 20% or less. Because the "With Bay-Delta Plan" scenario results in wholesale cutbacks ranging from 31% to 48%, the Tier 2 Plan cannot be applied.
• BAWSCA Recommendation: In the absence of a negotiated approach for allocating RWS supply among the Wholesale Customers during shortages exceeding 20%, BAWSCA suggests that agencies apply these cutbacks equally across all agencies for their 2025 UWMPs.
• "Without Bay-Delta" Scenario: The SFPUC analyses do not anticipate any cutbacks during the required five-year drought sequence under the "Without Bay- Delta Plan" scenario.

Guidance for 2025 UWMP Reporting
For the 2020 UWMPs, most member agencies utilized the "With Bay-Delta Plan" scenario for their standard tables and included the "Without Bay-Delta Plan" scenario in supplemental tables or appendices. BAWSCA understands that the SFPUC intends to follow this same approach for its own 2025 UWMP.

Note on Future Modeling (HRL Program)
While the SFPUC previously indicated it would model the Tuolumne River Healthy Rivers and Landscapes Program (HRL), they have not provided that modeling at this time due to significant implementation uncertainties.

Enclosed: Attachment A – 2025 UWMP Supply Reliability Letter_2026-03-11 Attachment B – 2025 UWMP Wholesale Customer Dry Year Allocations

cc: Tom Smegal
Allison Schutte

Services of the San Francisco Public Utilities Commission

OUR MISSION: To provide our customers with high-quality, efficient, and reliable water, power and sewer services in a manner that values environmental and community interests and sustains the resources entrusted to our care.

525 Golden Gate Ave
San Francisco, CA 94102
(415) 554-3155
sfpuc.gov

March 11, 2026

Danielle McPherson
Senior Water Resources Specialist
Bay Area Water Supply and Conservation Agency
155 Bovet Road, Suite 650
San Mateo, CA 94402

Dear Ms. McPherson,

This letter contains the supply reliability of the San Francisco Public Utilities Commission (SFPUC) Regional Water System (RWS) that the SFPUC has prepared for the 2025 Urban Water Management Plan (UWMP), which the Wholesale Customers may also use in their respective 2025 UWMPs. The SFPUC has assessed the RWS’s supply reliability under the following planning scenarios:

1. Projected supply reliability for years 2030 through 2050, assuming total demand is equivalent to the sum of the projected retail and wholesale demands on the RWS, which includes Wholesale Customer purchase projections provided to the SFPUC by BAWSCA on March 4, 2026 (refer to Table 1 below).

2. Projected supply reliability for 2050, assuming total demand is equivalent to the sum of the projected retail demands on the RWS and the Wholesale Customers’ Supply Assurance of 184 MGD.

3. Under each of the above demand conditions, projected supply reliability for the following scenarios: (a) with implementation of the 2018 amendments to the Bay-Delta Water Quality Control Plan (Bay-Delta Plan Amendment) and (b) without implementation of the Bay-Delta Plan Amendment.

San Francisco
Water Power Sewer
Opera tor of t he Hetch H etc hy Regio nal Wa t er Sys tem Daniel Lurie
Mayor
Joshua Arce
President
Stephen E. Leveroni
Vice President
Avni Jamdar
Commissioner
Kate H. Stacy
Commissioner
Meghan Thurlow
Commissioner
Dennis J. Herrera
General Manager

2025 UWMP Supply Reliability Memo
March 11, 2026

Table 1. Retail and Wholesale RWS Demand Assumptions Used for Supply Reliability Modeling (MGD)
20251 2030 2035 2040 2045 2050
Retail 61.1 62.7 61.2 61.9 64.0 66.7
Wholesale2 130.1 133.9 136.3 140.6 144.1 148.4
Total 191.2 196.6 197.5 202.5 208.1 215.1
1 2025 demands are from the FY 2024-25 Table J-1 water use calculations, prepared pursuant to the Water Supply Agreement between the SFPUC and the Wholesale Customers.
2 2030 through 2050 Wholesale Customer purchase projections were provided to the SFPUC by BAWSCA on March 4, 2026, and include demands for the cities of San Jose and Santa Clara.

The total amount of water the SFPUC can deliver to the Retail and Wholesale Customers from the RWS depends on several factors, including (1) the amount of water that is available to the SFPUC from natural runoff, (2) the amount of water in reservoir storage, and (3) the amount of water that the SFPUC releases from the RWS for purposes other than customer deliveries (e.g., instream flow releases below RWS reservoirs). For planning purposes, the SFPUC “average year” or “normal year” is based on historical hydrology under conditions that allow the RWS reservoirs to be filled over the course of the snowmelt season, allowing full deliveries to customers. For “dry-year” supply scenarios, the SFPUC plans its water deliveries using a water-supply planning methodology with reference to a simulated 8.5-year design drought.

In each demand scenario for 2030 through 2050, the SFPUC estimated RWS deliveries using the standard SFPUC procedure, which includes adding increased levels of rationing as needed in dry years to balance the demands on the RWS with available water supply. The five consecutive dry-year sequence shown in the tables below represent years 2 through 6 of the design drought.

The SFPUC chose this sequence because year 2 is the first year in which system-wide water use reductions could take effect, as the design drought sequence generally begins year 1 with full reservoirs. All simulations that the SFPUC has prepared for its 2025 UWMP have increased levels of rationing in the final years of the design drought sequence. The SFPUC has presented the results in the standardized format prescribed by DWR.

Assumptions about the status of the dry-year water supply projects included in the SFPUC’s Water System Improvement Program (WSIP) are provided below in Table 2 titled “WSIP Project Assumptions for RWS Supply Modeling.” The table reflects instream flow requirements at San Mateo and Alameda Creeks,

I I I I I I I

2025 UWMP Supply Reliability Memo
March 11, 2026

as described in the UWMP “common language” that the SFPUC provided to BAWSCA and the Wholesale Customers separately from this letter.

The SFPUC utilized the Water Shortage Allocation Plan (WSAP) that is incorporated in the Water Supply Agreement between the SFPUC and the Wholesale Customers to allocate the RWS supply available during dry years between the Retail Customers and the Wholesale Customers in the 2025 UWMP supply reliability analysis. The WSAP, also known as the Tier 1 Plan, defines the method for allocating between the Retail Customers collectively and Wholesale Customers collectively the available RWS supplies during system-wide shortages. The SFPUC and the Wholesale Customers most recently amended the WSAP in 2025. Also in 2025, the Wholesale Customers adopted an updated Tier 2 Plan, which allocates the collective Wholesale Customers’ share of available RWS supplies from the Tier 1 Plan among each of the 26 Wholesale Customers. The WSAP addresses shortages that require a system-wide reduction in water use of 20% or less, consistent with the SFPUC’s Level of Service Goal. For any shortage scenario requiring a system- wide reduction in water use above 20% in the supply reliability analysis, the SFPUC applied the Tier 1 Plan’s allocation of supplies between the Retail Customers and Wholesale Customers for a shortage requiring a system-wide reduction in water use of 16-20%.

Because of the uncertainty surrounding implementation of the Bay-Delta Plan Amendment, the RWS supply reliability assessment evaluates two future supply scenarios: (1) with implementation of the Bay-Delta Plan Amendment, and (2) without implementation of the Bay-Delta Plan Amendment. It is unknown when implementation may begin on the Bay-Delta Plan Amendment; for the purposes of the 2025 UWMP analysis, the SFPUC included it beginning in the 2030 modeling scenarios (see Tables 4a-4g and 6).

The SFPUC incorporated additional modeling assumptions in the 2025 UWMP analysis regarding the State Water Resources Control Board curtailments and assumptions regarding agreements with Turlock and Modesto Irrigation Districts pertaining to instream flow obligations.

1. D uring the last two drought periods, 2013-2016 and 2021-2023, the State Water Resources Control Board implemented curtailments through emergency regulations and curtailment orders that attempted to limit diversions from Central Valley watersheds including the Tuolumne River at certain times. Due to the uncertain legality of the State Water Resources Control Board’s curtailment actions as well as the

2025 UWMP Supply Reliability Memo
March 11, 2026

uncertainties regarding any potential future curtailment actions against San Francisco, the SFPUC’s RWS supply reliability analyses do not assume curtailments are in effect.

2. Through a 1966 agreement with the Modesto and Turlock Irrigation Districts (Districts), who are more senior downstream appropriative water rights holders on the Tuolumne River, San Francisco may become responsible for up to approximately 51.7% of any flow releases the Federal Energy Regulatory Commission (FERC) may require through issuance of a new license for the Districts’ Don Pedro Hydropower Project. The exact flow contribution for which San Francisco may become responsible is highly uncertain and may depend on multiple currently unknown factors, including an anticipated Endangered Species Act biological opinion from the National Marine Fisheries Service and a Clean Water Act section 401 water quality certification from the State Water Resources Control Board. San Francisco’s potential responsibility for FERC-ordered flows may further depend on San Francisco’s ability to enter into a new or extended agreement with the Districts to offset a portion of San Francisco’s flow contributions in exchange for payment. Due to the high levels of uncertainty surrounding the Districts’ FERC-relicensing process, as well as the unknown timing for license issuance, the SFPUC’s RWS water supply reliability analyses do not assume additional water supply losses from any potential new FERC-ordered flow releases.

3. The simulation of the Bay-Delta Plan Amendment scenario assumes that a 1996 agreement between San Francisco and the Districts (the Side Agreement), which allows San Francisco to pay the Districts in lieu of contributing a portion of current FERC-ordered flow releases, remains in effect, and that the San Francisco share of flows in excess of and not covered by the Side Agreement is approximately 51.7%. These assumptions were made for the purpose of completing the modeling for the UWMP update, and they do not represent a commitment by San Francisco or the Districts to any future agreement or of San Francisco accepting responsibility for any future FERC-ordered flow releases.

Based on current projected demands, supply modeling for the two future supply scenarios shows significantly different supply reliability projections for the RWS:
• Wi
th implementation of the Bay-Delta Plan Amendment: Under this scenario, using the demand assumptions shown in Table 1, RWS supplies are expected to range from full availability in an average year

2025 UWMP Supply Reliability Memo
March 11, 2026

(100%) to as low as 57% in multiple dry years when compared to water supplies in an average year. In other words, RWS supplies could be reduced by up to 43% in a multi-year drought. See Tables 4a-4g and 6. • Wit hout implementation of the Bay-Delta Plan Amendment: Under this scenario, using demand assumptions shown in Table 1, there are no anticipated shortages of RWS supplies. See Tables 5a-5g and 7.

Table 8 bel
ow provides the Wholesale Customer purchase projections and Wholesale Customer allocation of RWS supply for the five-year drought risk assessment from 2026 to 2030. The supply projections for 2026 to 2030 are based on a linear growth from 2025 to 2030 levels of demand as calculated by BAWSCA. This table does not assume implementation of the Bay-Delta Plan Amendment because the start of implementation remains uncertain.

In the forthcoming 2025 UWMP, the SFPUC acknowledges that it has a Level of Service objective to meet an average annual water demand of 265 MGD from the SFPUC watersheds for Retail and Wholesale Customers during non- drought years, as well as a contractual obligation to supply 184 MGD to the Wholesale Customers, subject to reduction under certain conditions. The SFPUC will, accordingly, include the results of modeling based on a Wholesale Customer demand of 184 MGD to facilitate planning that supports meeting this Level of Service objective and its contractual obligations. The results of this modeling will be in an appendix to the 2025 UWMP prepared by the SFPUC.

The RWS supply projections shown in the tables below are more accurately characterized as supplies that will be used to meet projected Retail and Wholesale Customer demands.

It is our understanding that you will pass this information on to the Wholesale Customers. If you have any questions or need additional information, please do not hesitate to contact Jennifer Lee at [email protected] or (415) 551-4563.

Sincerely,

Steven R. Ritchie
Assistant General Manager, Water Enterprise

2025 UWMP Supply Reliability Memo
March 11, 2026

Table 2: WSIP Project Assumptions for RWS Supply Modeling Projects Base Year 2025 Base Year 2030 and
Beyond
Base Year 2040 and
Beyond
Lower Crystal Springs
Dam Improvements
Crystal Springs storage
not fully restored
Crystal Springs storage
not fully restored
Crystal Springs storage
not fully restored
Regional Groundwater
Storage and Recovery
(GSR) Project
GSR account partially
filled at spring 2020
level of 43,000 AF; GSR
recovery rate of

5.2 MGD
a
GSR account fully filled;
GSR recovery rate of

5.2 MGD
a
GSR account fully filled;
GSR recovery rate of

6.2 MGD
a
Alameda Creek
Recapture Project Project not built Project built and operating
Project built and
operating
Dry-Year Transfers Not in effect Not in effect Not in effect a. The GSR Project was intended to provide 7.2 MGD over 7.5 years, however current limitations on the number of wells available will result in deliveries less than 7.2 MGD over 7.5 years.

Table 3: Projected Total Regional Water System Supply Utilized and Portion of Regional Water System Supply Utilized by Wholesale Customers in Normal Years [For Table 6-9]:

RWS Supply 2030 2035 2040 2045 2050
RWS Supply Utilized (MGD) 196.6 197.5 202.5 208.1 215.1 RWS Supply Utilized by Wholesale
Customersa (MGD) 133.9 136.3 140.6 144.1 148.4
a. RWS supply utilized by Wholesale Customers from 2030 through 2050 is equivalent to Wholesale Customer purchase projections provided to the SFPUC by BAWSCA on March 4, 2026, and includes demands for the cities of San Jose and Santa Clara.

2025 UWMP Supply Reliability Memo
March 11, 2026

Basis of Water Supply Data: With Implementation of the Bay-Delta Plan Amendment

Table 4a: Basis of Water Supply Data [For Table 7-1], Base Year 2030, With Bay-Delta Plan Amendment
Year Type Base
Year
RWS
Volume
Available
(MGD)
% of
Average
Supply
Wholesale
Volume
Available
(MGD)
Notes on Calculation of
Wholesale Allocation of
RWS
Average year 2030 196.6 100% 133.9
Single dry year 2030 147.5 75% 92.2
At shortages 20% or greater,
wholesale allocation is
assumed to be 62.5% and
retail allocation is 37.5%.

Consecutive 1st dry year 2030 147.5 75% 92.2 Same as above.

Consecutive 2nd dry year 2030 123.9 63% 77.4 Same as above.

Consecutive 3rd dry year 2030 123.9 63% 77.4 Same as above.

Consecutive 4th dry year 2030 123.9 63% 77.4 Same as above.

Consecutive 5th dry year 2030 123.9 63% 77.4 Same as above.

Table 4b: Basis of Water Supply Data [For Table 7-1], Base Year 2035, With Bay-Delta Plan Amendment
Year Type Base
Year
RWS
Volume
Available
(MGD)
% of
Average
Supply
Wholesale
Volume
Available
(MGD)
Notes on Calculation of
Wholesale Allocation of
RWS
Average year 2035 197.5 100% 136.3
Single dry year 2035 146.2 74% 91.3
At shortages 20% or
greater, wholesale
allocation is assumed to be

62.5% and retail allocation
is 37.5%.

Consecutive 1st dry year 2035 146.2 74% 91.3 Same as above.

Consecutive 2nd dry year 2035 124.4 63% 77.8 Same as above.

Consecutive 3rd dry year 2035 124.4 63% 77.8 Same as above.

Consecutive 4th dry year 2035 124.4 63% 77.8 Same as above.

Consecutive 5th dry year 2035 124.4 63% 77.8 Same as above.

2025 UWMP Supply Reliability Memo
March 11, 2026

Table 4c: Basis of Water Supply Data [For Table 7-1], Base Year 2040, With Bay-Delta Plan Amendment
Year Type Base
Year
RWS
Volume
Available
(MGD)
% of
Average
Supply
Wholesale
Volume
Available
(MGD)
Notes on Calculation of
Wholesale Allocation of
RWS
Average year 2040 202.5 100% 140.6
Single dry year 2040 145.8 72% 91.1
At shortages 20% or
greater, wholesale
allocation is assumed to be

62.5% and retail allocation
is 37.5%.

Consecutive 1st dry year 2040 145.8 72% 91.1 Same as above.

Consecutive 2nd dry year 2040 123.5 61% 77.2 Same as above.

Consecutive 3rd dry year 2040 123.5 61% 77.2 Same as above.

Consecutive 4th dry year 2040 123.5 61% 77.2 Same as above.

Consecutive 5th dry year 2040 123.5 61% 77.2 Same as above.

Table 4d: Basis of Water Supply Data [For Table 7-1], Base Year 2045, With Bay-Delta Plan Amendment
Year Type Base
Year
RWS
Volume
Available
(MGD)
% of
Average
Supply
Wholesale
Volume
Available
(MGD)
Notes on Calculation of
Wholesale Allocation of
RWS
Average year 2045 208.1 100% 144.1
Single dry year 2045 145.7 70% 91.0
At shortages 20% or
greater, wholesale
allocation is assumed to be

62.5% and retail allocation
is 37.5%.

Consecutive 1st dry year 2045 145.7 70% 91.0 Same as above.

Consecutive 2nd dry year 2045 122.8 59% 76.7 Same as above.

Consecutive 3rd dry year 2045 122.8 59% 76.7 Same as above.

Consecutive 4th dry year 2045 122.8 59% 76.7 Same as above.

Consecutive 5th dry year 2045 122.8 59% 76.7 Same as above.

2025 UWMP Supply Reliability Memo
March 11, 2026

Table 4e: Basis of Water Supply Data [For Table 7-1], Base Year 2050, With Bay-Delta Plan Amendment
Year Type Base
Year
RWS
Volume
Available
(MGD)
% of
Average
Supply
Wholesale
Volume
Available
(MGD)
Notes on Calculation of
Wholesale Allocation of
RWS
Average year 2050 215.1 100% 148.4
Single dry year 2050 146.2 68% 91.4
At shortages 20% or
greater, wholesale
allocation is assumed to be

62.5% and retail allocation
is 37.5%.

Consecutive 1st dry year 2050 146.2 68% 91.4 Same as above.

Consecutive 2nd dry year 2050 122.6 57% 76.6 Same as above.

Consecutive 3rd dry year 2050 122.6 57% 76.6 Same as above.

Consecutive 4th dry year 2050 122.6 57% 76.6 Same as above.

Consecutive 5th dry year 2050 122.6 57% 76.6 Same as above.

Table 4f: Basis of Water Supply Data [For Table 7-1] , Base Year 2050, With Bay-Delta Plan Amendment and Wholesale Demands at 184 MGD Supply Assurance Year Type Base
Year
RWS
Volume
Available
(MGD)
% of
Average
Supply
Wholesale
Volume
Available
(MGD)
Notes on Calculation of
Wholesale Allocation of
RWS
Average year 2050 250.7 100% 184.0
Single dry year 2050 145.4 58% 90.9
At shortages 20% or
greater, wholesale
allocation is assumed to be

62.5% and retail allocation
is 37.5%.

Consecutive 1st dry year 2050 145.4 58% 90.9 Same as above.

Consecutive 2nd dry year 2050 120.3 48% 75.2 Same as above.

Consecutive 3rd dry year 2050 120.3 48% 75.2 Same as above.

Consecutive 4th dry year 2050 120.3 48% 75.2 Same as above.

Consecutive 5th dry year 2050 120.3 48% 75.2 Same as above.

2025 UWMP Supply Reliability Memo
March 11, 2026

Table 4g: Projected RWS Supply Availability [Alternative to Table 7-1], Years 2030-2050, With Bay-Delta Plan Amendment
Year Type 2030 2035 2040 2045 2050
2050 (with 184
MGD Supply
Assurance)
Average year 100% 100% 100% 100% 100% 100%
Single dry year 75% 74% 72% 70% 68% 58%
Consecutive 1st dry year 75% 74% 72% 70% 68% 58%
Consecutive 2nd dry year 63% 63% 61% 59% 57% 48%
Consecutive 3rd dry year 63% 63% 61% 59% 57% 48%
Consecutive 4th dry year 63% 63% 61% 59% 57% 48%
Consecutive 5th dry year 63% 63% 61% 59% 57% 48%

2025 UWMP Supply Reliability Memo
March 11, 2026

Basis of Water Supply Data: Without Implementation of the Bay-Delta Plan Amendment

Table 5a: Basis of Water Supply Data [For Table 7-1], Base Year 2030, Without Bay-Delta Plan Amendment
Year Type Base
Year
RWS
Volume
Available
(MGD)
% of
Average
Supply
Wholesale
Volume
Available
(MGD)
Notes on Calculation of
Wholesale Allocation of
RWS
Average year 2030 196.6 100% 133.9
Single dry year 2030 196.6 100% 133.9
Consecutive 1st dry year 2030 196.6 100% 133.9
Consecutive 2nd dry year 2030 196.6 100% 133.9
Consecutive 3rd dry year 2030 196.6 100% 133.9
Consecutive 4th dry year 2030 196.6 100% 133.9
Consecutive 5th dry year 2030 196.6 100% 133.9

Table 5b: Basis of Water Supply Data [For Table 7-1], Base Year 2035, Without Bay-Delta Plan Amendment
Year Type Base
Year
RWS
Volume
Available
(MGD)
% of
Average
Supply
Wholesale
Volume
Available
(MGD)
Notes on Calculation of
Wholesale Allocation of
RWS
Average year 2035 197.5 100% 136.3
Single dry year 2035 197.5 100% 136.3
Consecutive 1st dry year 2035 197.5 100% 136.3
Consecutive 2nd dry year 2035 197.5 100% 136.3
Consecutive 3rd dry year 2035 197.5 100% 136.3
Consecutive 4th dry year 2035 197.5 100% 136.3
Consecutive 5th dry year 2035 197.5 100% 136.3

2025 UWMP Supply Reliability Memo
March 11, 2026

Table 5c: Basis of Water Supply Data [For Table 7-1], Base Year 2040, Without Bay-Delta Plan Amendment
Year Type Base
Year
RWS
Volume
Available
(MGD)
% of
Average
Supply
Wholesale
Volume
Available
(MGD)
Notes on Calculation of
Wholesale Allocation of
RWS
Average year 2040 202.5 100% 140.6
Single dry year 2040 202.5 100% 140.6
Consecutive 1st dry year 2040 202.5 100% 140.6
Consecutive 2nd dry year 2040 202.5 100% 140.6
Consecutive 3rd dry year 2040 202.5 100% 140.6
Consecutive 4th dry year 2040 202.5 100% 140.6
Consecutive 5th dry year 2040 202.5 100% 140.6

Table 5d: Basis of Water Supply Data [For Table 7-1], Base Year 2045, Without Bay-Delta Plan Amendment
Year Type Base
Year
RWS
Volume
Available
(MGD)
% of
Average
Supply
Wholesale
Volume
Available
(MGD)
Notes on Calculation of
Wholesale Allocation of
RWS
Average year 2045 208.1 100% 144.1
Single dry year 2045 208.1 100% 144.1
Consecutive 1st dry year 2045 208.1 100% 144.1
Consecutive 2nd dry year 2045 208.1 100% 144.1
Consecutive 3rd dry year 2045 208.1 100% 144.1
Consecutive 4th dry year 2045 208.1 100% 144.1
Consecutive 5th dry year 2045 208.1 100% 144.1

Table 5e: Basis of Water Supply Data [For Table 7-1], Base Year 2050, Without Bay-Delta Plan Amendment
Year Type Base
Year
RWS
Volume
Available
(MGD)
% of
Average
Supply
Wholesale
Volume
Available
(MGD)
Notes on Calculation of
Wholesale Allocation of
RWS
Average year 2050 215.1 100% 148.4
Single dry year 2050 215.1 100% 148.4
Consecutive 1st dry year 2050 215.1 100% 148.4
Consecutive 2nd dry year 2050 215.1 100% 148.4
Consecutive 3rd dry year 2050 215.1 100% 148.4
Consecutive 4th dry year 2050 215.1 100% 148.4
Consecutive 5th dry year 2050 215.1 100% 148.4

2025 UWMP Supply Reliability Memo
March 11, 2026

Table 5f: Basis of Water Supply Data [For Table 7-1], Base Year 2050, Without Bay-Delta Plan Amendment and Wholesale Demands at 184 MGD Supply Assurance Year Type Base
Year
RWS
Volume
Available
(MGD)
% of
Average
Supply
Wholesale
Volume
Available
(MGD)
Notes on Calculation of
Wholesale Allocation of
RWS
Average year 2050 250.7 100% 184.0
Single dry year 2050 225.6 90% 158.9
At 10% shortage, wholesale
allocation is 64% (144.4 MGD)
and retail allocation is 36%
(81.2 MGD). Retail allocations
above 66.7 MGD are re-
allocated to Wholesale
Customers, per the Water
Supply Agreement. Therefore,

14.5 MGD is added to
wholesale allocation, bringing
it to 158.9 MGD.

Consecutive 1st dry year 2050 225.6 90% 158.9 Same as above.

Consecutive 2nd dry year 2050 225.6 90% 158.9 Same as above.

Consecutive 3rd dry year 2050 225.6 90% 158.9 Same as above.

Consecutive 4th dry year 2050 225.6 90% 158.9 Same as above.

Consecutive 5th dry year 2050 225.6 90% 158.9 Same as above.

Table 5g: Projected RWS Supply [Alternative to Table 7-1], Years 2030-2050, Without Bay- Delta Plan Amendment
Year Type 2030 2035 2040 2045 2050
2050 (with 184
MGD Supply
Assurance)
Average year 100% 100% 100% 100% 100% 100%
Single dry year 100% 100% 100% 100% 100% 90%
Consecutive 1st dry year 100% 100% 100% 100% 100% 90%
Consecutive 2nd dry year 100% 100% 100% 100% 100% 90%
Consecutive 3rd dry year 100% 100% 100% 100% 100% 90%
Consecutive 4th dry year 100% 100% 100% 100% 100% 90%
Consecutive 5th dry year 100% 100% 100% 100% 100% 90%

2025 UWMP Supply Reliability Memo
March 11, 2026

Supply Projections for Consecutive Five Dry Year Sequences

Table 6: Projected Multiple Dry Years RWS Wholesale Allocation [For Table 7-4], With Bay-Delta Plan Amendment
2030 2035 2040 2045 2050 2050 (with 184 MGD
Supply Assurance)
First year 92.2 91.3 91.1 91.0 91.4 90.9
Second year 77.4 77.8 77.2 76.7 76.6 75.2
Third year 77.4 77.8 77.2 76.7 76.6 75.2
Fourth year 77.4 77.8 77.2 76.7 76.6 75.2
Fifth year 77.4 77.8 77.2 76.7 76.6 75.2

Table 7: Projected Multiple Dry Years RWS Wholesale Allocation [For Table 7-4], Without Bay-Delta Plan Amendment
2030 2035 2040 2045 2050 2050 (with 184 MGD
Supply Assurance)
First year 133.9 136.3 140.6 144.1 148.4 158.9
Second year 133.9 136.3 140.6 144.1 148.4 158.9
Third year 133.9 136.3 140.6 144.1 148.4 158.9
Fourth year 133.9 136.3 140.6 144.1 148.4 158.9
Fifth year 133.9 136.3 140.6 144.1 148.4 158.9

Table 8: Projected RWS Supply for 5-Year Drought Risk Assessment [For Table 7-5] Year 2026 2027 2028 2029 2030
Wholesale Purchase
Projectionsa (MGD) 130.9 131.6 132.4 133.2 133.9
RWS Supply Utilized by
Wholesale Customersb (MGD) 130.9 131.6 132.4 133.2 133.9 a. Wholesale Purchase Projections for 2026-2030 assume a linear growth between 2025 actual demands and 2030 projections, as calculated by BAWSCA.
b. This table does not assume implementation of the Bay-Delta Plan Amendment because the start of implementation remains uncertain.

Attachment B: 2025 UWMP Wholesale Customer Dry Year Allocations Basis for SFPUC's Water Supply Reliability Modeling
Actual (2025) and Projected (2030-2050) RWS Purchases
Agency ISG 20251
2030 2035 2040 2045 2050
Alameda CWD 13.76 10.08 11.25 11.56 12.00 12.45 13.76
Brisbane / GVMID 0.98 0.68 0.94 0.95 0.97 0.97 0.97
Burlingame 5.23 3.23 3.92 3.99 4.15 4.30 4.44
Coastside CWD 2.18 1.01 1.17 1.16 1.16 1.16 1.16
CWS Total 35.68 29.50 27.04 26.89 26.93 26.80 26.89
Daly City 4.29 3.55 4.29 4.29 4.29 4.29 4.29
East Palo Alto 3.46 1.72 1.19 1.19 1.19 1.18 1.19
Estero MID 5.90 3.78 3.90 3.92 3.93 3.91 3.90
Hayward 22.09 13.66 14.74 15.66 16.82 18.14 19.71
Hillsborough 4.09 2.32 2.09 2.08 2.09 2.11 2.12
Menlo Park 4.46 2.72 2.58 2.64 2.71 2.76 2.83
Mid-Peninsula WD 3.89 2.34 2.82 2.97 3.18 3.39 3.43
Millbrae 3.15 1.81 1.91 1.99 2.09 2.18 2.29
Milpitas 9.23 4.68 5.30 5.35 5.41 5.46 5.52
Mountain View 12.46 7.69 7.87 8.12 8.59 9.04 9.55
North Coast CWD 3.84 2.58 2.23 2.29 2.37 2.36 2.36
Palo Alto 16.58 9.31 8.30 8.20 8.15 8.15 8.18
Purissima Hills WD 1.63 1.51 1.36 1.35 1.36 1.36 1.37
Redwood City 10.93 7.43 6.84 6.54 6.73 6.91 7.09
San Bruno 3.25 1.03 1.85 2.27 2.68 2.68 2.68
San Jose 3.99 4.50 4.50 4.50 4.50 4.50
Santa Clara 2.91 4.50 4.50 4.50 4.50 4.50
Stanford 3.03 1.59 1.77 1.96 2.02 2.07 2.13
Sunnyvale 12.58 10.28 10.72 11.15 11.92 12.58 12.58
Westborough WD 1.32 0.70 0.82 0.80 0.84 0.88 0.91
Total 184.00 130.1 133.9 136.3 140.6 144.1 148.3
1 Source: FY 2024-25 J-Table
1 of 14
Attachment B: 2025 UWMP Wholesale Customer Dry Year Allocations Basis for SFPUC's Water Supply Reliability Modeling
Actual (2025) and Projected (2026-2030) RWS Purchases
Agency 2025 2026 2027 2028 2029 2030
Alameda CWD 10.08 10.32 10.55 10.78 11.02 11.25
Brisbane / GVMID 0.68 0.73 0.78 0.83 0.89 0.94
Burlingame 3.23 3.36 3.50 3.64 3.78 3.92
Coastside CWD 1.01 1.05 1.08 1.11 1.14 1.17
CWS Total 29.50 29.00 28.51 28.02 27.53 27.04
Daly City 3.55 3.70 3.85 4.00 4.14 4.29
East Palo Alto 1.72 1.62 1.51 1.40 1.30 1.19
Estero MID 3.78 3.80 3.83 3.85 3.88 3.90
Hayward 13.66 13.87 14.09 14.31 14.53 14.74
Hillsborough 2.32 2.27 2.23 2.18 2.14 2.09
Menlo Park 2.72 2.69 2.67 2.64 2.61 2.58
Mid-Peninsula WD 2.34 2.44 2.53 2.63 2.73 2.82
Millbrae 1.81 1.83 1.85 1.87 1.89 1.91
Milpitas 4.68 4.80 4.93 5.05 5.18 5.30
Mountain View 7.69 7.73 7.76 7.80 7.83 7.87
North Coast CWD 2.58 2.51 2.44 2.37 2.30 2.23
Palo Alto 9.31 9.11 8.91 8.71 8.50 8.30
Purissima Hills WD 1.51 1.48 1.45 1.42 1.39 1.36
Redwood City 7.43 7.32 7.20 7.08 6.96 6.84
San Bruno 1.03 1.20 1.36 1.52 1.69 1.85
San Jose 3.99 4.09 4.20 4.30 4.40 4.50
Santa Clara 2.91 3.23 3.54 3.86 4.18 4.50
Stanford 1.59 1.62 1.66 1.70 1.73 1.77
Sunnyvale 10.28 10.37 10.46 10.55 10.63 10.72
Westborough WD 0.70 0.72 0.75 0.77 0.80 0.82
Total 130.1 130.9 131.6 132.4 133.2 133.9
2 of 14
Attachment B: 2025 UWMP Wholesale Customer Dry Year Allocations For UWMP Tables 7-1 through Table 7-4
2025
With BDP
Basis of Water Supply Data
2026 2027 2028 2029 2030
130.12 130.88 131.64 132.40 133.16
130.12 130.88 131.64 132.40 133.16
0% 0% 0% 0% 0%
Projected Supply by Year Type
Agency
2025 RWS
Purchases 2026 2027 2028 2029 2030
Alameda CWD 10.08 10.08 11.25 11.56 12.00 12.45
Brisbane / GVMID 0.68 0.68 0.68 0.68 0.68 0.68
Burlingame 3.23 3.23 3.23 3.23 3.23 3.23
Coastside CWD 1.01 1.01 1.01 1.01 1.01 1.01
CWS Total 29.50 29.50 29.50 29.50 29.50 29.50
Daly City 3.55 3.55 3.55 3.55 3.55 3.55
East Palo Alto 1.72 1.72 1.72 1.72 1.72 1.72
Estero MID 3.78 3.78 3.78 3.78 3.78 3.78
Hayward 13.66 13.66 13.66 13.66 13.66 13.66
Hillsborough 2.32 2.32 2.32 2.32 2.32 2.32
Menlo Park 2.72 2.72 2.72 2.72 2.72 2.72
Mid-Peninsula WD 2.34 2.34 2.34 2.34 2.34 2.34
Millbrae 1.81 1.81 1.81 1.81 1.81 1.81
Milpitas 4.68 4.68 4.68 4.68 4.68 4.68
Mountain View 7.69 7.69 7.69 7.69 7.69 7.69
North Coast CWD 2.58 2.58 2.58 2.58 2.58 2.58
Palo Alto 9.31 9.31 9.31 9.31 9.31 9.31
Purissima Hills WD 1.51 1.51 1.51 1.51 1.51 1.51
Redwood City 7.43 7.43 7.43 7.43 7.43 7.43
San Bruno 1.03 1.03 1.03 1.03 1.03 1.03
San Jose 3.99 3.99 3.99 3.99 3.99 3.99
Santa Clara 2.91 2.91 2.91 2.91 2.91 2.91
Stanford 1.59 1.59 1.59 1.59 1.59 1.59
Sunnyvale 10.28 10.28 10.28 10.28 10.28 10.28
Westborough WD 0.70 0.70 0.70 0.70 0.70 0.70
Total 130.12 130.12 131.28 131.59 132.03 132.48
Percent Cutback
Wholesale RWS Demand
Wholesale RWS Supply
Base Year
Scenario
Consecutive Dry Year
3 of 14
Attachment B: 2025 UWMP Wholesale Customer Dry Year Allocations For UWMP Tables 7-1 through Table 7-4
2030
With BDP
Basis of Water Supply Data
1st/Single 2nd 3rd 4th 5th
133.9 133.9 133.9 133.9 133.9

92.2 77.4 77.4 77.4 77.4
31% 42% 42% 42% 42%
Projected Supply by Year Type
Agency
2030 Proj.

RWS
1st/Single
Dry Year
2nd Dry
Year
3rd Dry
Year
4th Dry
Year
5th Dry
Year
Alameda CWD 11.25 7.75 6.50 6.50 6.50 6.50
Brisbane / GVMID 0.94 0.65 0.54 0.54 0.54 0.54
Burlingame 3.92 2.70 2.27 2.27 2.27 2.27
Coastside CWD 1.17 0.81 0.68 0.68 0.68 0.68
CWS Total 27.04 18.61 15.63 15.63 15.63 15.63
Daly City 4.29 2.95 2.48 2.48 2.48 2.48
East Palo Alto 1.19 0.82 0.69 0.69 0.69 0.69
Estero MID 3.90 2.69 2.25 2.25 2.25 2.25
Hayward 14.74 10.15 8.52 8.52 8.52 8.52
Hillsborough 2.09 1.44 1.21 1.21 1.21 1.21
Menlo Park 2.58 1.78 1.49 1.49 1.49 1.49
Mid-Peninsula WD 2.82 1.94 1.63 1.63 1.63 1.63
Millbrae 1.91 1.31 1.10 1.10 1.10 1.10
Milpitas 5.30 3.65 3.06 3.06 3.06 3.06
Mountain View 7.87 5.42 4.55 4.55 4.55 4.55
North Coast CWD 2.23 1.54 1.29 1.29 1.29 1.29
Palo Alto 8.30 5.72 4.80 4.80 4.80 4.80
Purissima Hills WD 1.36 0.94 0.79 0.79 0.79 0.79
Redwood City 6.84 4.71 3.95 3.95 3.95 3.95
San Bruno 1.85 1.27 1.07 1.07 1.07 1.07
San Jose 4.50 3.10 2.60 2.60 2.60 2.60
Santa Clara 4.50 3.10 2.60 2.60 2.60 2.60
Stanford 1.77 1.22 1.02 1.02 1.02 1.02
Sunnyvale 10.72 7.38 6.20 6.20 6.20 6.20
Westborough WD 0.82 0.57 0.48 0.48 0.48 0.48
Total 133.92 92.2 77.4 77.4 77.4 77.4
Percent Cutback
Wholesale RWS Demand
Wholesale RWS Supply
Base Year
Scenario
Consecutive Dry Year
4 of 14
Attachment B: 2025 UWMP Wholesale Customer Dry Year Allocations For UWMP Tables 7-1 through Table 7-4
2035
With BDP
Basis of Water Supply Data
1st/Single 2nd 3rd 4th 5th
136.32 136.32 136.32 136.32 136.32

91.3 77.8 77.8 77.8 77.8
33% 43% 43% 43% 43%
Projected Supply by Year Type
Agency
2035 Proj.

RWS
1st/Single
Dry Year
2nd Dry
Year
3rd Dry
Year
4th Dry
Year
5th Dry
Year
Alameda CWD 11.56 7.74 6.60 6.60 6.60 6.60
Brisbane / GVMID 0.95 0.64 0.54 0.54 0.54 0.54
Burlingame 3.99 2.67 2.28 2.28 2.28 2.28
Coastside CWD 1.16 0.78 0.66 0.66 0.66 0.66
CWS Total 26.89 18.01 15.35 15.35 15.35 15.35
Daly City 4.29 2.87 2.45 2.45 2.45 2.45
East Palo Alto 1.19 0.80 0.68 0.68 0.68 0.68
Estero MID 3.92 2.63 2.24 2.24 2.24 2.24
Hayward 15.66 10.49 8.93 8.93 8.93 8.93
Hillsborough 2.08 1.39 1.19 1.19 1.19 1.19
Menlo Park 2.64 1.77 1.51 1.51 1.51 1.51
Mid-Peninsula WD 2.97 1.99 1.69 1.69 1.69 1.69
Millbrae 1.99 1.33 1.14 1.14 1.14 1.14
Milpitas 5.35 3.58 3.05 3.05 3.05 3.05
Mountain View 8.12 5.44 4.63 4.63 4.63 4.63
North Coast CWD 2.29 1.53 1.31 1.31 1.31 1.31
Palo Alto 8.20 5.49 4.68 4.68 4.68 4.68
Purissima Hills WD 1.35 0.90 0.77 0.77 0.77 0.77
Redwood City 6.54 4.38 3.73 3.73 3.73 3.73
San Bruno 2.27 1.52 1.30 1.30 1.30 1.30
San Jose 4.50 3.01 2.57 2.57 2.57 2.57
Santa Clara 4.50 3.01 2.57 2.57 2.57 2.57
Stanford 1.96 1.31 1.12 1.12 1.12 1.12
Sunnyvale 11.15 7.47 6.36 6.36 6.36 6.36
Westborough WD 0.80 0.54 0.46 0.46 0.46 0.46
Total 136.32 91.3 77.8 77.8 77.8 77.8
Percent Cutback
Base Year
Scenario
Consecutive Dry Year
Wholesale RWS Demand
Wholesale RWS Supply
5 of 14
Attachment B: 2025 UWMP Wholesale Customer Dry Year Allocations For UWMP Tables 7-1 through Table 7-4
2040
With BDP
Basis of Water Supply Data
1st/Single 2nd 3rd 4th 5th
140.57 140.57 140.57 140.57 140.57

91.1 77.2 77.2 77.2 77.2
35% 45% 45% 45% 45%
Projected Supply by Year Type
Agency
2040 Proj.

RWS
1st/Single
Dry Year
2nd Dry
Year
3rd Dry
Year
4th Dry
Year
5th Dry
Year
Alameda CWD 12.00 7.78 6.59 6.59 6.59 6.59
Brisbane / GVMID 0.97 0.63 0.53 0.53 0.53 0.53
Burlingame 4.15 2.69 2.28 2.28 2.28 2.28
Coastside CWD 1.16 0.75 0.64 0.64 0.64 0.64
CWS Total 26.93 17.45 14.79 14.79 14.79 14.79
Daly City 4.29 2.78 2.36 2.36 2.36 2.36
East Palo Alto 1.19 0.77 0.65 0.65 0.65 0.65
Estero MID 3.93 2.54 2.16 2.16 2.16 2.16
Hayward 16.82 10.90 9.24 9.24 9.24 9.24
Hillsborough 2.09 1.35 1.15 1.15 1.15 1.15
Menlo Park 2.71 1.75 1.49 1.49 1.49 1.49
Mid-Peninsula WD 3.18 2.06 1.75 1.75 1.75 1.75
Millbrae 2.09 1.35 1.15 1.15 1.15 1.15
Milpitas 5.41 3.51 2.97 2.97 2.97 2.97
Mountain View 8.59 5.57 4.72 4.72 4.72 4.72
North Coast CWD 2.37 1.53 1.30 1.30 1.30 1.30
Palo Alto 8.15 5.28 4.48 4.48 4.48 4.48
Purissima Hills WD 1.36 0.88 0.75 0.75 0.75 0.75
Redwood City 6.73 4.36 3.69 3.69 3.69 3.69
San Bruno 2.68 1.74 1.47 1.47 1.47 1.47
San Jose 4.50 2.92 2.47 2.47 2.47 2.47
Santa Clara 4.50 2.92 2.47 2.47 2.47 2.47
Stanford 2.02 1.31 1.11 1.11 1.11 1.11
Sunnyvale 11.92 7.73 6.55 6.55 6.55 6.55
Westborough WD 0.84 0.55 0.46 0.46 0.46 0.46
Total 140.57 91.1 77.2 77.2 77.2 77.2
Base Year
Scenario
Consecutive Dry Year
Wholesale RWS Demand
Wholesale RWS Supply
Percent Cutback
6 of 14
Attachment B: 2025 UWMP Wholesale Customer Dry Year Allocations For UWMP Tables 7-1 through Table 7-4
2045
With BDP
Basis of Water Supply Data
1st/Single 2nd 3rd 4th 5th
144.11 144.11 144.11 144.11 144.11
91 76.7 76.7 76.7 76.7
37% 47% 47% 47% 47%
Projected Supply by Year Type
Agency
2045 Proj.

RWS
1st/Single
Dry Year
2nd Dry
Year
3rd Dry
Year
4th Dry
Year
5th Dry
Year
Alameda CWD 12.45 7.86 6.63 6.63 6.63 6.63
Brisbane / GVMID 0.97 0.61 0.52 0.52 0.52 0.52
Burlingame 4.30 2.72 2.29 2.29 2.29 2.29
Coastside CWD 1.16 0.73 0.62 0.62 0.62 0.62
CWS Total 26.80 16.92 14.26 14.26 14.26 14.26
Daly City 4.29 2.71 2.28 2.28 2.28 2.28
East Palo Alto 1.18 0.75 0.63 0.63 0.63 0.63
Estero MID 3.91 2.47 2.08 2.08 2.08 2.08
Hayward 18.14 11.45 9.65 9.65 9.65 9.65
Hillsborough 2.11 1.33 1.12 1.12 1.12 1.12
Menlo Park 2.76 1.75 1.47 1.47 1.47 1.47
Mid-Peninsula WD 3.39 2.14 1.80 1.80 1.80 1.80
Millbrae 2.18 1.38 1.16 1.16 1.16 1.16
Milpitas 5.46 3.45 2.91 2.91 2.91 2.91
Mountain View 9.04 5.71 4.81 4.81 4.81 4.81
North Coast CWD 2.36 1.49 1.26 1.26 1.26 1.26
Palo Alto 8.15 5.14 4.34 4.34 4.34 4.34
Purissima Hills WD 1.36 0.86 0.72 0.72 0.72 0.72
Redwood City 6.91 4.36 3.68 3.68 3.68 3.68
San Bruno 2.68 1.69 1.43 1.43 1.43 1.43
San Jose 4.50 2.84 2.40 2.40 2.40 2.40
Santa Clara 4.50 2.84 2.40 2.40 2.40 2.40
Stanford 2.07 1.31 1.10 1.10 1.10 1.10
Sunnyvale 12.58 7.94 6.70 6.70 6.70 6.70
Westborough WD 0.88 0.55 0.47 0.47 0.47 0.47
Total 144.11 91.0 76.7 76.7 76.7 76.7
Percent Cutback
Base Year
Scenario
Consecutive Dry Year
Wholesale RWS Demand
Wholesale RWS Supply
7 of 14
Attachment B: 2025 UWMP Wholesale Customer Dry Year Allocations For UWMP Tables 7-1 through Table 7-4
2050
With BDP
Basis of Water Supply Data
1st/Single 2nd 3rd 4th 5th
148.35 148.35 148.35 148.35 148.35

91.4 76.6 76.6 76.6 76.6
38% 48% 48% 48% 48%
Projected Supply by Year Type
Agency
2050 Proj.

RWS
1st/Single
Dry Year
2nd Dry
Year
3rd Dry
Year
4th Dry
Year
5th Dry
Year
Alameda CWD 13.76 8.48 7.11 7.11 7.11 7.11
Brisbane / GVMID 0.97 0.60 0.50 0.50 0.50 0.50
Burlingame 4.44 2.74 2.29 2.29 2.29 2.29
Coastside CWD 1.16 0.71 0.60 0.60 0.60 0.60
CWS Total 26.89 16.57 13.89 13.89 13.89 13.89
Daly City 4.29 2.64 2.22 2.22 2.22 2.22
East Palo Alto 1.19 0.73 0.61 0.61 0.61 0.61
Estero MID 3.90 2.40 2.01 2.01 2.01 2.01
Hayward 19.71 12.14 10.17 10.17 10.17 10.17
Hillsborough 2.12 1.31 1.09 1.09 1.09 1.09
Menlo Park 2.83 1.75 1.46 1.46 1.46 1.46
Mid-Peninsula WD 3.43 2.11 1.77 1.77 1.77 1.77
Millbrae 2.29 1.41 1.18 1.18 1.18 1.18
Milpitas 5.52 3.40 2.85 2.85 2.85 2.85
Mountain View 9.55 5.88 4.93 4.93 4.93 4.93
North Coast CWD 2.36 1.46 1.22 1.22 1.22 1.22
Palo Alto 8.18 5.04 4.22 4.22 4.22 4.22
Purissima Hills WD 1.37 0.84 0.71 0.71 0.71 0.71
Redwood City 7.09 4.37 3.66 3.66 3.66 3.66
San Bruno 2.68 1.65 1.38 1.38 1.38 1.38
San Jose 4.50 2.77 2.32 2.32 2.32 2.32
Santa Clara 4.50 2.77 2.32 2.32 2.32 2.32
Stanford 2.13 1.31 1.10 1.10 1.10 1.10
Sunnyvale 12.58 7.75 6.50 6.50 6.50 6.50
Westborough WD 0.91 0.56 0.47 0.47 0.47 0.47
Total 148.35 91.4 76.6 76.6 76.6 76.6
Percent Cutback
Base Year
Scenario
Consecutive Dry Year
Wholesale RWS Demand
Wholesale RWS Supply
8 of 14
Attachment B: 2025 UWMP Wholesale Customer Dry Year Allocations For UWMP Tables 7-1 through Table 7-4
2026
Without BDP
Basis of Water Supply Data
2026 2027 2028 2029 2030
130.1 130.9 131.6 132.4 133.2
130.1 130.9 131.6 132.4 133.2
0% 0% 0% 0% 0%
Projected Supply by Year Type
Agency
2025 RWS
Purchases 2026 2027 2028 2029 2030
Alameda CWD 10.08 10.08 11.25 11.56 12.00 12.45
Brisbane / GVMID 0.68 0.68 0.68 0.68 0.68 0.68
Burlingame 3.23 3.23 3.23 3.23 3.23 3.23
Coastside CWD 1.01 1.01 1.01 1.01 1.01 1.01
CWS Total 29.50 29.50 29.50 29.50 29.50 29.50
Daly City 3.55 3.55 3.55 3.55 3.55 3.55
East Palo Alto 1.72 1.72 1.72 1.72 1.72 1.72
Estero MID 3.78 3.78 3.78 3.78 3.78 3.78
Hayward 13.66 13.66 13.66 13.66 13.66 13.66
Hillsborough 2.32 2.32 2.32 2.32 2.32 2.32
Menlo Park 2.72 2.72 2.72 2.72 2.72 2.72
Mid-Peninsula WD 2.34 2.34 2.34 2.34 2.34 2.34
Millbrae 1.81 1.81 1.81 1.81 1.81 1.81
Milpitas 4.68 4.68 4.68 4.68 4.68 4.68
Mountain View 7.69 7.69 7.69 7.69 7.69 7.69
North Coast CWD 2.58 2.58 2.58 2.58 2.58 2.58
Palo Alto 9.31 9.31 9.31 9.31 9.31 9.31
Purissima Hills WD 1.51 1.51 1.51 1.51 1.51 1.51
Redwood City 7.43 7.43 7.43 7.43 7.43 7.43
San Bruno 1.03 1.03 1.03 1.03 1.03 1.03
San Jose 3.99 3.99 3.99 3.99 3.99 3.99
Santa Clara 2.91 2.91 2.91 2.91 2.91 2.91
Stanford 1.59 1.59 1.59 1.59 1.59 1.59
Sunnyvale 10.28 10.28 10.28 10.28 10.28 10.28
Westborough WD 0.70 0.70 0.70 0.70 0.70 0.70
Total 130.12 130.12 131.28 131.59 132.03 132.48
Wholesale RWS Supply
Percent Cutback
Consecutive Dry Year
Wholesale RWS Demand
Base Year
Scenario
9 of 14
Attachment B: 2025 UWMP Wholesale Customer Dry Year Allocations For UWMP Tables 7-1 through Table 7-4
2030
Without BDP
Basis of Water Supply Data
1st/Single 2nd 3rd 4th 5th
133.9 133.9 133.9 133.9 133.9
133.9 133.9 133.9 133.9 133.9
0% 0% 0% 0% 0%
Projected Supply by Year Type
Agency
2030 Proj.

RWS
1st/Single
Dry Year
2nd Dry
Year
3rd Dry
Year
4th Dry
Year
5th Dry
Year
Alameda CWD 11.25 11.25 11.25 11.25 11.25 11.25
Brisbane / GVMID 0.94 0.94 0.94 0.94 0.94 0.94
Burlingame 3.92 3.92 3.92 3.92 3.92 3.92
Coastside CWD 1.17 1.17 1.17 1.17 1.17 1.17
CWS Total 27.04 27.04 27.04 27.04 27.04 27.04
Daly City 4.29 4.29 4.29 4.29 4.29 4.29
East Palo Alto 1.19 1.19 1.19 1.19 1.19 1.19
Estero MID 3.90 3.90 3.90 3.90 3.90 3.90
Hayward 14.74 14.74 14.74 14.74 14.74 14.74
Hillsborough 2.09 2.09 2.09 2.09 2.09 2.09
Menlo Park 2.58 2.58 2.58 2.58 2.58 2.58
Mid-Peninsula WD 2.82 2.82 2.82 2.82 2.82 2.82
Millbrae 1.91 1.91 1.91 1.91 1.91 1.91
Milpitas 5.30 5.30 5.30 5.30 5.30 5.30
Mountain View 7.87 7.87 7.87 7.87 7.87 7.87
North Coast CWD 2.23 2.23 2.23 2.23 2.23 2.23
Palo Alto 8.30 8.30 8.30 8.30 8.30 8.30
Purissima Hills WD 1.36 1.36 1.36 1.36 1.36 1.36
Redwood City 6.84 6.84 6.84 6.84 6.84 6.84
San Bruno 1.85 1.85 1.85 1.85 1.85 1.85
San Jose 4.50 4.50 4.50 4.50 4.50 4.50
Santa Clara 4.50 4.50 4.50 4.50 4.50 4.50
Stanford 1.77 1.77 1.77 1.77 1.77 1.77
Sunnyvale 10.72 10.72 10.72 10.72 10.72 10.72
Westborough WD 0.82 0.82 0.82 0.82 0.82 0.82
Total 133.92 133.92 133.92 133.92 133.92 133.92
Wholesale RWS Supply
Percent Cutback
Consecutive Dry Year
Wholesale RWS Demand
Base Year
Scenario
10 of 14
Attachment B: 2025 UWMP Wholesale Customer Dry Year Allocations For UWMP Tables 7-1 through Table 7-4
2035
Without BDP
Basis of Water Supply Data
1st/Single 2nd 3rd 4th 5th
136.3 136.3 136.3 136.3 136.3
136.3 136.3 136.3 136.3 136.3
0% 0% 0% 0% 0%
Projected Supply by Year Type
Agency
2035 Proj.

RWS
1st/Single
Dry Year
2nd Dry
Year
3rd Dry
Year
4th Dry
Year
5th Dry
Year
Alameda CWD 11.56 11.56 11.56 11.56 11.56 11.56
Brisbane / GVMID 0.95 0.95 0.95 0.95 0.95 0.95
Burlingame 3.99 3.99 3.99 3.99 3.99 3.99
Coastside CWD 1.16 1.16 1.16 1.16 1.16 1.16
CWS Total 26.89 26.89 26.89 26.89 26.89 26.89
Daly City 4.29 4.29 4.29 4.29 4.29 4.29
East Palo Alto 1.19 1.19 1.19 1.19 1.19 1.19
Estero MID 3.92 3.92 3.92 3.92 3.92 3.92
Hayward 15.66 15.66 15.66 15.66 15.66 15.66
Hillsborough 2.08 2.08 2.08 2.08 2.08 2.08
Menlo Park 2.64 2.64 2.64 2.64 2.64 2.64
Mid-Peninsula WD 2.97 2.97 2.97 2.97 2.97 2.97
Millbrae 1.99 1.99 1.99 1.99 1.99 1.99
Milpitas 5.35 5.35 5.35 5.35 5.35 5.35
Mountain View 8.12 8.12 8.12 8.12 8.12 8.12
North Coast CWD 2.29 2.29 2.29 2.29 2.29 2.29
Palo Alto 8.20 8.20 8.20 8.20 8.20 8.20
Purissima Hills WD 1.35 1.35 1.35 1.35 1.35 1.35
Redwood City 6.54 6.54 6.54 6.54 6.54 6.54
San Bruno 2.27 2.27 2.27 2.27 2.27 2.27
San Jose 4.50 4.50 4.50 4.50 4.50 4.50
Santa Clara 4.50 4.50 4.50 4.50 4.50 4.50
Stanford 1.96 1.96 1.96 1.96 1.96 1.96
Sunnyvale 11.15 11.15 11.15 11.15 11.15 11.15
Westborough WD 0.80 0.80 0.80 0.80 0.80 0.80
Total 136.32 136.32 136.32 136.32 136.32 136.32
Wholesale RWS Supply
Percent Cutback
Consecutive Dry Year
Wholesale RWS Demand
Base Year
Scenario
11 of 14
Attachment B: 2025 UWMP Wholesale Customer Dry Year Allocations For UWMP Tables 7-1 through Table 7-4
2040
Without BDP
Basis of Water Supply Data
1st/Single 2nd 3rd 4th 5th
140.6 140.6 140.6 140.6 140.6
140.6 140.6 140.6 140.6 140.6
0% 0% 0% 0% 0%
Projected Supply by Year Type
Agency
2040 Proj.

RWS
1st/Single
Dry Year
2nd Dry
Year
3rd Dry
Year
4th Dry
Year
5th Dry
Year
Alameda CWD 12.00 12.00 12.00 12.00 12.00 12.00
Brisbane / GVMID 0.97 0.97 0.97 0.97 0.97 0.97
Burlingame 4.15 4.15 4.15 4.15 4.15 4.15
Coastside CWD 1.16 1.16 1.16 1.16 1.16 1.16
CWS Total 26.93 26.93 26.93 26.93 26.93 26.93
Daly City 4.29 4.29 4.29 4.29 4.29 4.29
East Palo Alto 1.19 1.19 1.19 1.19 1.19 1.19
Estero MID 3.93 3.93 3.93 3.93 3.93 3.93
Hayward 16.82 16.82 16.82 16.82 16.82 16.82
Hillsborough 2.09 2.09 2.09 2.09 2.09 2.09
Menlo Park 2.71 2.71 2.71 2.71 2.71 2.71
Mid-Peninsula WD 3.18 3.18 3.18 3.18 3.18 3.18
Millbrae 2.09 2.09 2.09 2.09 2.09 2.09
Milpitas 5.41 5.41 5.41 5.41 5.41 5.41
Mountain View 8.59 8.59 8.59 8.59 8.59 8.59
North Coast CWD 2.37 2.37 2.37 2.37 2.37 2.37
Palo Alto 8.15 8.15 8.15 8.15 8.15 8.15
Purissima Hills WD 1.36 1.36 1.36 1.36 1.36 1.36
Redwood City 6.73 6.73 6.73 6.73 6.73 6.73
San Bruno 2.68 2.68 2.68 2.68 2.68 2.68
San Jose 4.50 4.50 4.50 4.50 4.50 4.50
Santa Clara 4.50 4.50 4.50 4.50 4.50 4.50
Stanford 2.02 2.02 2.02 2.02 2.02 2.02
Sunnyvale 11.92 11.92 11.92 11.92 11.92 11.92
Westborough WD 0.84 0.84 0.84 0.84 0.84 0.84
Total 140.57 140.57 140.57 140.57 140.57 140.57
Wholesale RWS Supply
Percent Cutback
Consecutive Dry Year
Wholesale RWS Demand
Base Year
Scenario
12 of 14
Attachment B: 2025 UWMP Wholesale Customer Dry Year Allocations For UWMP Tables 7-1 through Table 7-4
2045
Without BDP
Basis of Water Supply Data
1st/Single 2nd 3rd 4th 5th
144.1 144.1 144.1 144.1 144.1
144.1 144.1 144.1 144.1 144.1
0% 0% 0% 0% 0%
Projected Supply by Year Type
Agency
2045 Proj.

RWS
1st/Single
Dry Year
2nd Dry
Year
3rd Dry
Year
4th Dry
Year
5th Dry
Year
Alameda CWD 12.45 12.45 12.45 12.45 12.45 12.45
Brisbane / GVMID 0.97 0.97 0.97 0.97 0.97 0.97
Burlingame 4.30 4.30 4.30 4.30 4.30 4.30
Coastside CWD 1.16 1.16 1.16 1.16 1.16 1.16
CWS Total 26.80 26.80 26.80 26.80 26.80 26.80
Daly City 4.29 4.29 4.29 4.29 4.29 4.29
East Palo Alto 1.18 1.18 1.18 1.18 1.18 1.18
Estero MID 3.91 3.91 3.91 3.91 3.91 3.91
Hayward 18.14 18.14 18.14 18.14 18.14 18.14
Hillsborough 2.11 2.11 2.11 2.11 2.11 2.11
Menlo Park 2.76 2.76 2.76 2.76 2.76 2.76
Mid-Peninsula WD 3.39 3.39 3.39 3.39 3.39 3.39
Millbrae 2.18 2.18 2.18 2.18 2.18 2.18
Milpitas 5.46 5.46 5.46 5.46 5.46 5.46
Mountain View 9.04 9.04 9.04 9.04 9.04 9.04
North Coast CWD 2.36 2.36 2.36 2.36 2.36 2.36
Palo Alto 8.15 8.15 8.15 8.15 8.15 8.15
Purissima Hills WD 1.36 1.36 1.36 1.36 1.36 1.36
Redwood City 6.91 6.91 6.91 6.91 6.91 6.91
San Bruno 2.68 2.68 2.68 2.68 2.68 2.68
San Jose 4.50 4.50 4.50 4.50 4.50 4.50
Santa Clara 4.50 4.50 4.50 4.50 4.50 4.50
Stanford 2.07 2.07 2.07 2.07 2.07 2.07
Sunnyvale 12.58 12.58 12.58 12.58 12.58 12.58
Westborough WD 0.88 0.88 0.88 0.88 0.88 0.88
Total 144.11 144.11 144.11 144.11 144.11 144.11
Wholesale RWS Supply
Percent Cutback
Consecutive Dry Year
Wholesale RWS Demand
Base Year
Scenario
13 of 14
Attachment B: 2025 UWMP Wholesale Customer Dry Year Allocations For UWMP Tables 7-2 through Table 7-4
2050
Without BDP
Basis of Water Supply Data
1st/Single 2nd 3rd 4th 5th
148.3 148.3 148.3 148.3 148.3
148.3 148.3 148.3 148.3 148.3
0% 0% 0% 0% 0%
Projected Supply by Year Type
Agency
2050 Proj.

RWS
1st/Single
Dry Year
2nd Dry
Year
3rd Dry
Year
4th Dry
Year
5th Dry
Year
Alameda CWD 13.76 13.76 13.76 13.76 13.76 13.76
Brisbane / GVMID 0.97 0.97 0.97 0.97 0.97 0.97
Burlingame 4.44 4.44 4.44 4.44 4.44 4.44
Coastside CWD 1.16 1.16 1.16 1.16 1.16 1.16
CWS Total 26.89 26.89 26.89 26.89 26.89 26.89
Daly City 4.29 4.29 4.29 4.29 4.29 4.29
East Palo Alto 1.19 1.19 1.19 1.19 1.19 1.19
Estero MID 3.90 3.90 3.90 3.90 3.90 3.90
Hayward 19.71 19.71 19.71 19.71 19.71 19.71
Hillsborough 2.12 2.12 2.12 2.12 2.12 2.12
Menlo Park 2.83 2.83 2.83 2.83 2.83 2.83
Mid-Peninsula WD 3.43 3.43 3.43 3.43 3.43 3.43
Millbrae 2.29 2.29 2.29 2.29 2.29 2.29
Milpitas 5.52 5.52 5.52 5.52 5.52 5.52
Mountain View 9.55 9.55 9.55 9.55 9.55 9.55
North Coast CWD 2.36 2.36 2.36 2.36 2.36 2.36
Palo Alto 8.18 8.18 8.18 8.18 8.18 8.18
Purissima Hills WD 1.37 1.37 1.37 1.37 1.37 1.37
Redwood City 7.09 7.09 7.09 7.09 7.09 7.09
San Bruno 2.68 2.68 2.68 2.68 2.68 2.68
San Jose 4.50 4.50 4.50 4.50 4.50 4.50
Santa Clara 4.50 4.50 4.50 4.50 4.50 4.50
Stanford 2.13 2.13 2.13 2.13 2.13 2.13
Sunnyvale 12.58 12.58 12.58 12.58 12.58 12.58
Westborough WD 0.91 0.91 0.91 0.91 0.91 0.91
Total 148.35 148.35 148.35 148.35 148.35 148.35
Percent Cutback
Wholesale RWS Supply
Wholesale RWS Demand
Consecutive Dry Year
Scenario
Base Year
14 of 14
Valley
Water - Water Supply Reliability Tables
Water
Supply 2030 2035 2040 2045 2050
Surface water 56,000 76,000 77,000 76,000 76,000
Imported water 177,000 163,000 163,000 164,000 164,000
SFPUC Supply 50,000 51,000 52,000 53,000 54,000
Natural Groundwater Recharge 61,000 61,000 60,000 60,000 60,000 Recycled water (potable) 0 24,000 24,000 24,000 24,000
Recycled water (non-potable) 20,000 22,000 24,000 26,000 28,000 Supply Total 365,000 397,000 400,000 403,000 406,000
Demand Total 330,000 330,000 330,000 330,000 330,000
Difference (Surplus) 35,000 67,000 70,000 73,000 76,000 Water Supply 2030 2035 2040 2045 2050
Surface water 11,000 10,000 10,000 10,000 10,000
Imported water 42,000 37,000 37,000 37,000 37,000
SFPUC Supply 30,000 31,000 32,000 33,000 32,000
Natural Groundwater Recharge 47,000 48,000 47,000 47,000 47,000 Recycled water (potable) 0 24,000 24,000 24,000 24,000
Recycled water (non-potable) 20,000 22,000 24,000 26,000 28,000 Supply from Storage 181,000 250,000 246,000 245,000 246,000 Supply Total 331,000 422,000 420,000 422,000 424,000
Demand Total 330,000 330,000 330,000 330,000 330,000
Difference 1,000 92,000 90,000 92,000 94,000
Multiple Dry Years Supplies and Demands (Acre-feet rounded to nearest 1,000) 2030 2035 2040 2045 2050
Supply 232,000 242,000 243,000 225,000 223,000
Supply from Storage 175,000 245,000 239,000 242,000 242,000 Demand Totals 330,000 330,000 330,000 330,000 330,000
Surplus/(Shortfall) 77,000 157,000 152,000 137,000 135,000 WSCP Actions
Revised Difference
Supply 322,000 287,000 287,000 267,000 268,000
Supply from Storage 136,000 212,000 196,000 188,000 186,000 Demand Totals 330,000 330,000 330,000 330,000 330,000
Surplus/(Shortfall) 128,000 169,000 153,000 125,000 124,000 WSCP Actions
Revised Difference
Supply 262,000 231,000 232,000 203,000 204,000
Supply from Storage 121,000 186,000 174,000 160,000 159,000 Demand Totals 330,000 330,000 330,000 330,000 330,000
Surplus/(Shortfall) 53,000 87,000 76,000 33,000 33,000
WSCP Actions
Revised Difference
Supply 266,000 241,000 240,000 241,000 241,000
Supply from Storage 35,000 121,000 106,000 63,000 63,000 Demand Totals 330,000 330,000 330,000 330,000 330,000
Surplus/(Shortfall) (29,000) 32,000 16,000 (26,000) (26,000) WSCP Actions 29,000 26,000 26,000
Revised Difference 0 0 0
Supply 277,000 304,000 309,000 282,000 282,000
Supply from Storage 32,000 54,000 30,000 30,000 30,000
Demand Totals 330,000 330,000 330,000 330,000 330,000
Surplus/(Shortfall) (21,000) 28,000 9,000 (18,000) (18,000) WSCP Actions 21,000 18,000 18,000
Revised Difference 0 0 0
Fifth Year
Average Year Supplies and Demands (Acre-feet rounded to nearlest 1,000) Single Dry Year Supplies and Demands (Acre-feet rounded to nearest 1,000) First Year
Second Year
Third Year
Fourth Year
General Values
are rounded to the nearest 1,000 AF.

Imported Water Based on CalSim 3 model runs for Delivery Capability Report 2025.

SFPUC Supplies
SFPUC
deliveries are based on modeled supply reliability results and estimates provided
by BAWSCA; values reflect scenarios that assume implementation of the Bay-Delta Plan Amendment.

Recycled Water
Non-p
otable recycled water supplies are based on projections provided by retaile
rs and reflect anticipated future recycled water use. Potable recycled water supplies assumes implementation of the Pure Water Silicon Valley.

Demand All model demands are based on the WSMP countywide demand of 330 TAF.

Supply Portfolio
Assumes Valley Water's Water Supply Master Plan 2050 low-cost portfolio:

Semitropic storage (350 TAF) through 2035; groundwater banking (250 TAF) starting
2040; Sisk Reservoir expansion in 2035; DCP in 2045; Pure Water Silicon Valle
y in 2035.

Operations
Under normal year conditions, sustainable storage is maintained and no withdrawals from long-term storage are assumed; demands are met by incoming supplies. During droughts, stored water accumulated during normal and wet years is used to bridge gaps between reduced incoming supplies and demand.

Hydrology Model period is 1922–2021; single dry year is 1977; multi-year drought is 1988–1992; this remains the most severe extended drought in the record.

Infrastructure
Anderson Reservoir is dewatered in 2030 and operational by 2035. Seismic upgrades to Calero, Guadalupe, Almaden, and Anderson are complete in the 2035 model runs and later.

Supply Definition
Reasonably available supply is water in storage above thresholds for emergency needs, subsidence protection, and operational withdrawal limits for each storage facility.

Shortage Response
In the 5-year drought, WSCP actions are required in years 4 and 5 for some future scenarios; th
ese shortages are addressed through demand reduction and suppl
y augmentation.

Notes

Water Shortage Contingency Plan

Appendix G

PREPARED BY

City of Santa Clara
Water Shortage Contingency Plan

PREPARED FOR

City of Santa Clara

DRAFT PLAN | MAY 2026
i WEST. YOST
Wa ter. Engineered .

DRAFT REPORT | MAY 2026
EARYEAR2020

City of Santa Clara
Water Shortage Contingency Plan

Prepared for
City of Santa Clara

Project No. 1078-60-23-01

Prepared by: Elizabeth Drayer, PE, RCE #46872 Date

QA/QC Review: Rhodora Biagtan, PE, RCE #59371 Date

"''
WEST. YOST
Water. Engineered.

n-c-1078-60-23-01-wp-2025uwmp-appendices
i City of Santa Clara
2025 Water Shortage Contingency Plan
May 2026

Table of Contents

1.0 Introduction ............................................................................................................. 1

2.0 Water Supply Reliability Analysis .......................................................................... 1

3.0 Annual Water Supply and Demand Assessment Procedures ............................. 1

3.1 Decision-Making Process .................................................................................... 2

3.1.1 AWSDA Finding: Sufficient Water Supply to Meet Expected Demands ...... 3

3.1.2 AWSDA Finding: Available Water Supply Will Not Meet Demands ............. 3

3.2 Key Data Inputs ................................................................................................... 4

3.3 Assessment Methodology .................................................................................... 5

4.0 Standard Water Shortage Levels ........................................................................... 6

5.0 Shortage Response Actions .................................................................................. 7

5.1 Demand Reduction Actions ................................................................................. 8

5.2 Additional Mandatory Restrictions ...................................................................... 10

5.2.1 Water Features and Swimming Pools ....................................................... 10

5.3 Supply Augmentation and Other Actions ........................................................... 10

5.4 Locally Appropriate Operational Changes ......................................................... 11

5.5 Emergency Response Plan................................................................................ 11

6.0 Communication Protocols .................................................................................... 12

6.1 Communication for Foreseeable Events ............................................................ 12

6.2 Communication for Unforeseeable Events ......................................................... 13

7.0 Compliance and Enforcement .............................................................................. 13

7.1 Compliance and Enforcement Procedures ........................................................ 13

8.0 Legal Authorities ................................................................................................... 14

9.0 Financial Consequences of WSCP ...................................................................... 14

10.0 Monitoring and Reporting................................................................................... 15

11.0 WSCP Refinement Procedures .......................................................................... 15

12.0 Plan Adoption, Submittal, and availability ........................................................ 16

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n-c-1078-60-23-01-wp-2025uwmp-appendices
ii City of Santa Clara
2025 Water Shortage Contingency Plan
May 2026

Table of Contents

LIST OF TABLES
Table 1. Schedule of Annual Water Supply and Demand Assessment (AWSDA) Activities ...................................................................................... 2 Table 2. Schedule of Decision-Making Activities if AWSDA Indicates Supply May Not Meet Demands .............................................................................. 4 Table 3. Water Shortage Contingency Plan Levels (DWR Table 8-1) ........................ 7 Table 4. Demand Reduction Actions (DWR Table 8-3 Retail) ................................... 9 Table 5. Supply Augmentation and Other Actions (DWR Table 8-2 Retail) ............. 11

LIST OF ACRONYMS AND ABBREVIATIONS
AB Assembly Bill 1
AMI Advanced Metering Infrastructure 6
AMR Automated Meter Reading 15
AWSDA Annual Water Supply and Demand Assessment 2
City City of Santa Clara 1
County Santa Clara County
CWC California Water Code
Director Director of Water & Sewer Utilities 2
DWR Department of Water Resources 2
ERP Emergency Response Plan 11
HCF Hundred Cubic Feet
Legislature California State Legislature 1
MG Million Gallons 10
SB Senate Bill 1
SCMC City of Santa Clara Municipal Code
SFPUC San Francisco Public Utilities Commission
UWMP Urban Water Management Plan
WSCP Water Shortage Contingency Plan 1

WEST YOST

n-c-1078-60-23-01-wp-2025uwmp-appendices
1 City of Santa Clara
2025 Water Shortage Contingency Plan
May 2026

Water Shortage Contingency Plan

1.0 INTRODUCTION
This plan presents the City of Santa Clara ’s (City) Water Shortage Contingency Plan (WSCP). The WSCP describes the City’s strategic plan in preparation for and response to water shortages, with a goal to proactively prevent catastrophic service disruptions. It includes water shortage conditions and associated actions that will be implemented in the event of a water supply shortage. As part of the WSCP, the City’s legal authorities, communication protocols, compliance, and enforcement, and monitoring and reporting are included.

A water shortage may occur due to several reasons, such as climate change, drought, and catastrophic events. Drought, regulatory action constraints, and natural and manmade disasters may occur at any time. A water shortage means that the available water supply is insufficient to meet the normally expected customer water use.

In 2018, the California State Legislature (Legislature) enacted two policy bills, (Senate Bill (SB) 606 (Hertzberg) and Assembly Bill (AB) 1668 (Friedman)) (2018 Water Conservation Legislation), to establish a new foundation for drought planning to adapt to climate change and the resulting longer and more intense droughts in California. The 2018 Water Conservation Legislation set new requirements for water shortage contingency planning.

The City’s WSCP is consistent with the 2018 Water Conservation Legislation requirements. The City intends for this WSCP to be an adaptive management plan so that it may assess response action effectiveness and adapt to emergencies and catastrophic events. Refinement procedures and adoption requirements are provided in this plan to allow the City to modify this WSCP outside of the U rban Water Management Plan (UWMP) process.

2.0 WATER SUPPLY RELIABILITY ANALYSIS
The City’s water supply planning analysis and reliability are discussed in the City’s most recent UWMP. A summary of the City’s existing and projected water use is provided in Chapter 4 of the UWMP. Its existing and planned water supplies by source are described in Chapter 6. And its water supply reliability assessment and the drought risk assessment are provided in Chapter 7. The City’s seismic risk assessment and mitigation plan are discussed in Chapter 8.

The City conducts an annual water supply and demand assessment to plan for potential water shortages, as described below in Section 3.0. The analysis associated with this WSCP was developed in the context of the City’s water supply sources and reliability.

3.0 ANNUAL WATER SUPPLY AND DEMAND ASSESSMENT

PROCEDURES
Starting July 1, 2022, California Water Code (CWC) Section 10632.1 require d water suppliers to conduct an Annual Water Supply and Demand Assessment (AWSDA) and submit an Annual Water Shortage Assessment Report to the Department of Water

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Resources (DWR). The assessment is conducted for the current year’s upcoming dry season and the next year, assuming that the next year will be a dry year. This WSCP provides the procedures for the City to conduct its AWSDA. The findings from that assessment will provide information for City’s Annual Water Shortage Assessment Report.

The procedures provided in this section are intended to assist the City in planning for potential, foreseeable shortage in water supplies. These procedures provide the steps the City needs to take that may lead to declaring a water shortage emergency and associated water shortage level (see Section 4.0) and implementation of water shortage response actions (see Section 5.0).

3.1 Decision-Making Process
The City uses the decision -making process described in this section to consistently determine its water supply reliability on an annual basis. The City may adjust and improve this process as needed.

The City’s Water & Sewer Utilities Department is responsible for preparing the City’s AWSDA and Annual Water Shortage Assessment Report and for submitting the Annual Water Shortage Assessment Report to DWR by July 1 of each year. The Water & Sewer Utilities Department will gather key data inputs described in Section 3.2 and conduct the assessment in accordance with Section 3.3. Each year, the City performs the assessment based on the San Francisco Public Utilities Commission ( SFPUC) and Valley Water’s anticipated water deliveries. After completing the AWSDA, City staff presents the Annual Water Shortage Assessment Report to the Water & Sewer Utilities Director for review.

In general, the City will follow the schedule of activities shown in Table 1 for conducting the AWSDA and decision making. These activities are described in further detail in the following subsections. Due to variations in climate and hydrologic conditions, the start and end dates shown in the table are approximate and may be adjusted as needed. The intent of the schedule is to allow shortage response actions to effectively address anticipated water shortage conditions in a timely manner while complying with the State’s reporting requirements.

Table 1. Schedule of Annual Water Supply and Demand Assessment (AWSDA) Activities
Schedule Activities Responsible Party
February Obtain monthly water use data by customer type from Finance Department for previous year.

Water & Sewer
Utility
February
Determine monthly water production data (surface water, potable groundwater, non-potable irrigation groundwater, recycled water) for previous year.

Water & Sewer
Utility
February Obtain population estimates for previous year from DOF (https://www.dof.ca.gov/Forecasting/Demographics/Estimates/) Water & Sewer
Utility
March
Complete analysis for previous year (supply and demand
comparison, hydrologic and regulatory conditions,
infrastructure constraints, etc.).

Water & Sewer
Utility

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Table 1. Schedule of Annual Water Supply and Demand Assessment (AWSDA) Activities
Schedule Activities Responsible Party
March
Calculate projected unconstrained demand for current year and identify/describe projection methods (projected
population growth, etc.).

Water & Sewer
Utility
April
Identify projected hydrologic conditions for current year and obtain any anticipated surface water supply constraints from wholesalers for current year.

Water & Sewer
Utility
April
Determine current conditions of groundwater supply and
groundwater table to anticipate any groundwater supply
constraints for current year.

Water & Sewer
Utility
April
Complete analysis for current year based on a “dry year.” Determine the anticipated monthly water supply reliability for the current year using calculation spreadsheet.

Water & Sewer
Utility
April
Determine if/when water supply shortages will occur and what WSCP stage the shortage will fall into. Determine what (if any) WSCP actions will need to be implemented to mitigate supply shortage.

Water & Sewer
Utility
May Prepare AWSDA presenting the findings and WSCP actions (if any) to be implemented.

Water & Sewer
Utility
May / June Present AWSDA findings to City Council, as needed. Water & Sewer Utility
by July Implement the WSCP actions as approved by City Council (if a water shortage is projected).

Water & Sewer
Utility
July Submit final AWSDA to DWR by July 1. Water & Sewer Utility
Note: Months are approximate and may be adjusted based on climate and hydrologic conditions. July 1 due date is a firm date.

3.1.1 AWSDA Finding: Sufficient Water Supply to Meet Expected Demands If the AWSDA finds that available water supply will be sufficient to meet expected demands for the current year and one subsequent dry year, no further action is required.

City staff will submit the Annual Water Shortage Assessment Report to DWR by July 1 of each year.

3.1.2 AWSDA Finding: Available Water Supply Will Not Meet Demands Should the AWSDA find that available supply will not meet expected demands, the City will coordinate interdepartmentally, with the region’s other water service providers , and with Santa Clara County (County) for the possible proclamation of a n emergency. The Water & Sewer Utilities Director or their designee will present the finalized assessment to City Council, along with recommendations on water shortage condition determination and actions. Recommended actions may include declaration of a water shortage emergency, declaration of a water shortage condition, and water shortage actions.

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Based on the findings of the AWSDA, if a water shortage condition exists, the City Council will adopt a resolution declaring a water shortage emergency and an associated water shortage condition and authorizing water shortage actions. The Water & Sewer Utilities will then prepare the City’s Annual Water Shortage Assessment Report, incorporating the City Council determinations and approved actions. The schedule of decision -making activities is provided in Table 2. The start and end dates and the activities s hown in this table are approximate and may be adjusted as needed.

Table 2. Schedule of Decision-Making Activities if AWSDA Indicates Supply May Not Meet Demands
Schedule Activities Responsible Party
May
Based on finalized determinations of Annual Assessment
regarding water shortage condition and recommended actions, prepare recommendations on water shortage condition
determination and actions.

Water & Sewer
Utility and City
Manager
May Prepare ordinances or resolutions approving determinations and actions.

Water & Sewer
Utility and City
Attorney
May
Coordinate interdepartmentally, with the region’s water service providers, and with the County for the possible proclamation of a local emergency.

Water & Sewer
Utility
May
Based on determinations of the AWSDA, prepare the Annual Water Shortage Assessment Report with recommendations
on water shortage condition. Submit to Water & Sewer Utilities Director.

Water & Sewer
Utility
May
Present finalized determinations and recommendations to City Council, along with ordinances or resolutions approving determinations and actions.

Water & Sewer
Utility and City
Attorney
May / June
Receive presentation of finalized determinations and
recommendations. Make determination of degree of
emergency and act on resolutions that declare a water
shortage emergency condition. Authorize water shortage
response actions for implementation.

City Council
May / June Revise AWSDA to include City Council determinations and approved actions.

Water & Sewer
Utility
June
If a water shortage emergency condition is declared,
implement the WSCP and the water shortage response
actions as approved by City Council.

Water & Sewer
Utility and City
Attorney
July 1 Finalize AWSDA and Annual Water Shortage Assessment Report and submit to DWR (see Table 1).

Water & Sewer
Utility

3.2 Key Data Inputs
The AWSDA is required to evaluate supply and demands for the current year and one subsequent dry year. The following key data inputs will be used to evaluate the City’s water supply reliability.

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Planned water supplies are used as input to the AWSDA for the current year and the following one dry year. The subsequent dry year may be similar to a single dry year as defined in Chapter 7 of the City’s most recently adopted UWMP. In planning for water supplies, the following factors are considered:
• Hydrological conditions
• Regulatory conditions
• Contractual constraints
• Surface water and groundwater quality conditions
• Groundwater well production limitations
• Infrastructure capacity constraints or changes
• Capital improvement projects implementation
• Development Planning
Planned water supply sources and quantities will be described and be reasonably consistent with the supply projections in Chapter 6 ( Normal-Year Water Supply Characterization) of the City’s most recent UWMP. Should the supply sources and projections deviate significantly from the UWMP, the City will provide an explanation addressing the difference.

Planned unconstrained water demands are used as input to the AWSDA for the current year and the following one dry year. Unconstrained water demands are customer demands where no water conservation measures are in effect. In planning for water demands, the following factors are considered:
• Weather conditions
• Water year type
• Population changes (e.g., due to development projects) • Anticipated new demands (e.g., changes to land use)
• Pending policy changes that may impact demands
• Infrastructure operations
Planned water demands types and quantities will be described and be reasonably consistent with the demand projections in Chapter 4 (Water Use Characterization) of the City’s most recent UWMP. Should the demand projections deviate significantly from the UWMP, the City will provide an explanation addressing the difference.

3.3 Assessment Methodology
In preparing the AWSDA, the City will use the following assessment methodology and evaluation criteria to evaluate the City’s water supply reliability for the current year and following one dry year.

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The City will use the AWSDA Reporting Tables workbook provided by DWR as a resource in the WUEdata Portal1 to plan for current year and future year demands. Planned supply and demand inputs described in Section 3.2 will be entered in the spreadsheet in annual increments, or closer time intervals as necessary during water shortage conditions.

Supply and demand will be compared to determine the reliability of the City’s water supply in the current year and the following one dry year. The City’s water supply for the current year and the following dry year will be determined reliable if water supp lies are equivalent to or exceed projected unconstrained water demands. If water supply cannot meet anticipated water demands in the current year or the following dry year, the extent of the water shortage condition will be determined, and the City will pr epare response actions in accordance with this WSCP. If a water shortage is anticipated, t he AWSDA findings will be presented to the City Council, along with recommended actions for City Council consideration.

4.0 STANDARD WATER SHORTAGE LEVELS
To provide a consistent regional and statewide approach to conveying the relative severity of water supply shortage conditions, the 2018 Water Conservation Legislation mandates that water suppliers plan for six standard water shortage levels that correspond to progressive ranges of up to 10, 20, 30, 40, 50 percent, and greater than 50 percent shortages from the normal reliability condition. Each shortage condition should correspond to additional actions water suppliers would implement to meet the severity of the impending shortages. A water shortage is the gap between available supply and projected demands.

Table 3 presents the City’s water shortage level s, which align with the state’s standard levels of water shortage. The City’s water shortage levels apply to both foreseeable and unforeseeable water supply shortage conditions.

1 California Department of Water Resources. “Resources for Urban Water Suppliers.” https://wuedata.water.ca.gov/manage_resources.asp?reportType=urban, last accessed September 22, 2025.

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Table 3. Water Shortage Contingency Plan Levels (DWR Table 8-1)

As described in Section 3.0, the City will conduct an AWSDA to determine its water supply condition for the current year and a subsequent dry year. Preparing the AWSDA helps the City ascertain the need to declare a water shortage emergency and water shortage condition for foreseeable events. In certain cases, the City may need to declare a water shortage emergency due to unforeseen water supply interruptions.

When the City anticipates or identifies that water supplies may not be adequate to meet the normal water supply needs of its customers, the City Council may determine that a water shortage exists and consider a resolution to declare a water shortage emergency and associated level. The shortage level provides direction on shortage response actions, as further described below.

5.0 SHORTAGE RESPONSE ACTIONS
CWC Section 10632(a)(4) requires shortage response actions that align with the defined shortage levels. The City’s shortage response actions consist of a combination of demand reduction, supply augmentation, and operational changes. The City’s suite of response action s depends on the event that precipitates a water shortage level, the Standard
Shortage
Levels
Percent
Shortage Range
Suppliers
Shortage
Levels
Percent
Shortage
Range
1 Up to 10% 1 Up to 10%
2 Up to 20% 2 Up to 20%
3 Up to 30% 3 Up to 30%
4 Up to 40% 4 Up to 40%
5 Up to 50% 5 Up to 50%
6 >50% 6 >50%
Check the box if the Supplier uses the
Standard six levels of water shortage.

Proceed to the next table.

NOTES:

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time of the year the event occurs, the water supply sources available, and the condition of its water system infrastructure.

In general, t he City plans to use a balanced approach, combining demand reduction, supply augmentation, and operational changes to respond to the event and the resulting water shortage level. The City will adapt its implementation of response actions to close the gap b etween water supplies and water demand and meet the water use goals associated with the declared water shortage level.

Meters within the City’s water system allow the City to compare current water demands with demand reduction goals and adjust its shortage response actions accordingly. The City water system is fully equipped with meters which can be read periodically to track the extent of the effectiveness of the City’s response actions.

Water production and water use can be compared to previous periods. This continuous monitoring allows the City to assess water system demands and compare it with its water demand reduction goals. The City may then adjust its shortage response actions as needed to balance demands with available water supplies. For example, the City may intensify its public outreach or more vigorously enforce compliance with water use prohibitions if needed water demand reduction goals are not met for any specific shortage level. Conversely, the City may reduce public outreach frequency or decrease compliance actions if demand reduction goals are exceeded.

The shortage response actions discussed in the following sections may be considered as tools that allow the City to respond to water shortage conditions. Shortage response actions are initiated at the shortage levels shown and continue to be implemented at higher shortage levels. Because the City may continuously monito r and adjust its response actions to reasonably equate demands with available supply, the extent to which the gap between water supplies and water demand will be reduced by implementation of each action is difficult to quantify and is provided as an estimate.

Certain response actions, such as public outreach and enforcement, support the effectiveness of other response actions and do not have a quantifiable effect on their own.

5.1 Demand Reduction Actions
During water shortage conditions, the City plans to reduce demand by implementing the actions shown in Table 4. Demand reduction actions are organized by the triggering water shortage level, and each action includes an estimate of how much its implementation will reduce the shortage gap. For each demand reduction action, Table 4 also indicates if the City uses compliance actions such as penalties, charges, or other enforcement. Demand reduction actions are initiated at the shortage levels shown and will con tinue to be implemented at higher shortage levels.

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Table 4. Demand Reduction Actions (DWR Table 8-3 Retail)

Yes
Volume or
Percentage
Drop down
Shortage Gap Reduction Value
(May be a range) (AF)
1 Expand Public Information
Campaign Percentage
Studies have shown that a
targeted public information
campaign during a drought
can reduce water use by 7 -
8%
-- Yes
1 Increase Water Waste Patrols Percentage 0-1 -- Yes
1 Other Percentage
Boosts the effectiveness of
other methods - not readily
quantifiable
Enforcement of permanent water use restriction
Ordinance (Muni Code 13.15.080) Yes
2 Increase Water Waste Patrols Percentage 0-1 -- Yes
2 Other Percentage
Boosts the effectiveness of
other methods - not readily
quantifiable
Enforcement of permanent water use restriction
Ordinance (Muni Code 13.15.080) Yes
2 Reduce System Water Loss Percentage 0-10 -- Yes
2 Decrease Line Flushing Percentage 0-1 -- Yes
2 Water Features - Restrict water use
for decorative water features, such
as fountains
Percentage 0-1 -- Yes
2 Other Percentage 0-1 Decorative water features must use recirculating water Yes 2 Other - Prohibit use of potable
water for construction and dust
control
Percentage 0-1 -- Yes
2 Other water feature or swimming
pool restriction Percentage 0-1 -- Yes
2 Other Percentage 0-1 New irrigation connections restricted to recycled water Yes 2 Other Percentage 0-1 Irrigation of golf courses restricted to recycled water Yes 2 Landscape - Limit landscape
irrigation to specific days Percentage 5-10 Outdoor watering days may be restricted based on water supply conditions Yes
3 Other Percentage 0-1 Potable water use for decorative water features prohibited Yes
3 Other Percentage 0-1 Irrigation of golf courses except greens and tees restricted, shall use recycled water if available Yes
3 Implement or Modify Drought Rate
Structure or Surcharge Percentage 5-30 -- Yes
3 Increase Frequency of Meter
Reading Percentage 0-5 -- Yes
4 Other Percentage
Boosts the effectiveness of
other methods - not readily
quantifiable
The City shall apportion the City's available supply of water among customers in the most reasonable manner
possible and the rules and regulations for water service may be amended to deal with the water shortage
emergency condition (Muni Code 13.15.140)
Yes
5 Other Percentage
Boosts the effectiveness of
other methods - not readily
quantifiable
The City shall apportion the City's available supply of water among customers in the most reasonable manner
possible and the rules and regulations for water service may be amended to deal with the water shortage
emergency condition (Muni Code 13.15.140)
Yes
6 Other Percentage 0-1 New pool construction and filling prohibited Yes 6 Other Percentage 0-1 New irrigation connections prohibited, recycled water allowed without restriction Yes
Is the Supplier completing this table using the standard six levels? (yes/no) How much is this going to reduce the shortage gap?
Shortage
Level
Demand Reduction Actions
Drop down list
These are the only categories that will
be accepted by the WUEdata online
submittal tool. Select those that apply.

Additional Explanation or Reference
(OPTIONAL)
Penalty, Charge,
or Other
Enforcement?
For Retail Suppliers
Only
Drop Down List

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5.2 Additional Mandatory Restrictions
In addition to the demand reduction actions listed in Table 4, the City has other water use restrictions and prohibitions that are enforced at all times listed under Section 1.C of the City’s Potable and Recycled Water System Rules and Regulations. 2 The State also mandates certain prohibitions, and the City will enforce all such requirements.

5.2.1 Water Features and Swimming Pools
Water shortage response would focus on providing sufficient supply to meet health and safety needs for residential customers. Tempering the uses for water features and swimming pools will be based on the severity of the water shortage condition. The relative total water use from these sources would be a consideration for how water features would be restricted during specific water shortage conditions. Water features are a relatively small discretionary use and may be impacted at any time during a triggered water shortage condition.

The City distinguishes special water features, such as decorative fountains and ponds, differently from pools and spas. Special water features are regulated separately. The City’s Potable and Recycled Water System Rules and Regulations Section 1.C requires recirculating water systems to be used for all water features. For decorative water features, recycled water shall be used where available. Covers are required on all new swimming pools and spas.

5.3 Supply Augmentation and Other Actions
The City has approximately 28.8 million gallons (MG) of potable water storage within the City’s service area to manage daily operations and mitigate the effects of a short -term (days) water supply interruption. As part of the City’s operations, the City repair s and replaces water distribution system infrastructure to reduce water system losses. Sources available to the City include an extensive local underground aquifer and imported water supplies delivered by two wholesale water agencies, SFPUC and Valley Water.

In a water shortage emergency, the City may increase groundwater supply or supplies from SFPUC and Valley Water. Supply augmentation and other actions that the City may implement during water supply emergencies are summarized in Table 5.

2 Potable and Recycled Water System Rules and Regulations City of Santa Clara, November 2024, https://www.santaclaraca.gov/our-city/departments-g-z/water-sewer-utilities, last accessed April 15, 2026.

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Table 5. Supply Augmentation and Other Actions (DWR Table 8-2 Retail)

5.4 Locally Appropriate Operational Changes
During a water shortage of any level, the City may elect to implement operational measures to support implementation of the WSCP. This may include hiring temporary workers, reassigning staff, and/or increasing overtime to provide staffing for a range of efforts, such as conducting Water Waste Patrols, implementing the communication protocols, responding to customer service requests, scheduling, and conducting site assessments and consultations, processing incentive and rebate applications, and increasing compliance and enforcement efforts. The City may also elect to increase monitoring of potable water usage , lower water system pressure and limit water main flushing. Operational changes will be considered at each level of water shortage to determine whether and when to implement such measures.

5.5 Emergency Response Plan
The City’s water shortage levels outlined in Section 4.0 apply to both foreseeable and unforeseeable water supply shortage conditions, including catastrophic water shortage conditions.

Yes
Volume or
Percentage
Drop down
Shortage Gap
Reduction Value
(May be a range)
(AF)
1 Other Actions (describe) Percentage 10
Increase groundwater use if needed,
combined with demand reduction
actions
2 Other Actions (describe) Percentage 20
Increase groundwater use, SFPUC, and/or
Valley Water to supplement supply that
is deficient, combined with demand
reduction actions
3 Other Actions (describe) Percentage 30
Increase groundwater use, SFPUC, and/or
Valley Water to supplement supply that
is deficient, combined with demand
reduction actions
4 Other Actions (describe) Percentage 40
Increase groundwater use, SFPUC, and/or
Valley Water to supplement supply that
is deficient, combined with demand
reduction actions
5 Other Actions (describe) Percentage 50
Increase groundwater use, SFPUC, and/or
Valley Water to supplement supply that
is deficient, combined with demand
reduction actions
6 Other Actions (describe) Percentage >50
Increase groundwater use, SFPUC, and/or
Valley Water to supplement supply that
is deficient, combined with demand
Is the Supplier completing this table using the standard six levels? (yes/no) How much is this going to reduce the
shortage gap?
Shortage
Level
Supply Augmentation Methods and
Other Actions by Water Supplier
Drop down list
These are the only categories that will
be accepted by the WUEdata online
submittal tool
Additional Explanation or Reference
(OPTIONAL)

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The City’s Emergency Response Plan (ERP) addresses catastrophic water shortage conditions. The ERP outlines response procedures associated with unforeseeable incidents such as a regional power outage , earthquake, infrastructure failure, and other events. More specifically, it addresses responses for water system losses including current water emergency interconnections, water demands under earthquake emergency conditions and non-earthquake emergencies. The ERP also identifies seven categories of response and the criteria that triggers that specific response to occur.

The communication procedures are also outlined in the ERP. In response to a drought, the ERP outlines the procedures the City is recommended to follow which includes: initial actions, continuous assessment and response procedures and after action monitoring and reporting. Steps for deactivation and demobilization of activated triggers and response actions are also identified to facilitate recovery procedures and return to normal operation. In addition, the effectiveness of the ERP is evaluated by the Depart ment staff on a periodic basis. This is to ensure that procedures and practices developed in the ERP are adequate and implemented properly . To protect the security of the City’s water system, the ERP is retained by the City as a confidential document.

6.0 COMMUNICATION PROTOCOLS
In the event of a water shortage, the City must inform its customers, the general public and interested parties, and local, regional, and state entities. Communication protocols for foreseeable and unforeseeable events are provided in this section. In any event, timely and effective communication must occur for a ppropriate response to the event.

City staff are provided with City email accounts and cell phones to communicate internally and externally.

6.1 Communication for Foreseeable Events
Water shortage may be foreseeable when the City conducts its AWSDA as described in Section 3.0. When the City determines the potential of a water shortage event, the City Council may determine and declare a water shortage emergency. The City will hold a duly noticed public meeting to present the current or predicted shortage. At the public meeting, the City Council will determine if a water shortage emergency condition exists and the degree of the emergency. The City Council will cons ider the shortage response actions triggered or anticipated to be triggered by the shortage level. As necessary, the City Council will act on the water shortage emergency declaration, associated water shortage level, and shortage response actions.

The City will follow the communication protocols and procedures below and may trigger any of them at any water shortage level:

1. If a water shortage emergency is anticipated, the City will coordinate interdepartmentally, with the region’s water service providers, and with the County for the possible proclamation of a local emergency.

2. The City will issue a public notice for a City Council meeting during which the AWSDA findings and recommendations for a water shortage emergency and shortage response actions are presented.

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3. The City will communicate actions to customers, the general public, and interested parties through a combination of bill stuffers and newsletters, website, press releases, and social media posts.

4. The City will communicate actions to relevant local, regional, and state officials and entities primarily through email correspondence.

6.2 Communication for Unforeseeable Events
A water shortage may also occur during unforeseeable events such as earthquakes, fires, infrastructure failures, civil unrest, and other catastrophic events. The City’s ERP provides specific communication protocols and procedures to convey actions during these events.

The City may trigger these communication protocols, depending on the event. In general, communications and notifications will proceed along the identified chain of command. All City staff are provided their communication responsibilities. The ERP also provides a list of relevant contacts to notify at the local, regional, and state level.

7.0 COMPLIANCE AND ENFORCEMENT
This section describes how the City will ensure compliance with and enforcement of provisions of this WSCP. The City’s procedures include protocols for treatment of violations and actions associated with more egregious levels of violation. The procedures include appeal and exemption processes.

7.1 Compliance and Enforcement Procedures
When a water shortage is anticipated, the City Council will adopt a resolution declaring a water shortage emergency condition and the regulations and restrictions that should be enforced in response to the declared water shortage level.

The City is metered system -wide, at production facilities and at each customer connection. Thus, water use can be quantified and compared to determine users’ extent of compliance to water reduction requirements. The City may also become aware of non-compliance through water waste reporting by the general public, the City’s dedicated water waste hotline, City staff inspections, and/or manual review of customer use data.

Upon receiving a water waste complaint, City staff will investigate the offending site’s water use history and make site visits to determine the cause of the waste. City staff will then reach out to the site to educate them on the City’s water waste policies and help them get into compliance. In addition, City staff uses this opportunity to further educate businesses and residents on current water conservation programs and what opportunities there may be to increase their water efficiency. While outreach an d education typically brings most water wasters into compliance, the City does retain the ability to levy fines of up to $1,000 and the installation of a flow restrictor to frequent offenders, per the City of Santa Clara Municipal Code ( SCMC) 13.15.220.

The Director of Water & Sewer Utilities or their designee is responsible for enforcement and penalties. Water users or property owners can appeal the notice of violation or the

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administrative fee by submitting a written request for appeal to the Director of Water & Sewer Utilities, per the City’s Potable and Recycled Water System Rules and Regulations.

8.0 LEGAL AUTHORITIES
SCMC Chapter 13.15 supports the City’s ongoing water use restrictions, including provisions for enforcement. The SCMC does not contain provisions for additional restrictions on water use during water shortages. Should a water shortage occur, the City would need to adopt an emergency ordinance to restrict water use as needed. The emergency ordinance would support the City’s water shortage contingency actions, including regulations and restrictions to be enacted in event of a water shortage.

At the time of a water shortage emergency, the City Council will, by resolution, declare a state of water shortage emergency and authorize implementation of the WSCP. A water shortage emergency declaration will be in effect upon proper findings made by the City Council and remain in effect until the City Council finds and declares by resolution that the water shortage emergency condition has abated, has changed in degree, or no longer exists.

When a water shortage is determined, the City will coordinate interdepartmentally, with the region’s water service providers, and with the County for the possible proclamation of a local emergency in accordance with under California Government Code, California Emergency Services Act (Article 2, Section 8558).

In a duly noticed meeting, the City Council will determine whether a water shortage emergency condition exists and, if so, the degree of the emergency and what regulations and restrictions should be enforced in response to the shortage. The City shall declare a water shortage emergency in accordance with CWC Chapter 3 of Division 1.

California Water Code Division 1, Section 350:

The governing body of a distributor of a public water supply…shall declare a water shortage emergency condition to prevail within the area served by such distributor whenever it finds and determines that the ordinary demands and requirements of water consumers cannot be satisfied without depleting the water supply of the distributor to the extent that there would be insufficient water for human consumption, sanitation, and fire protection.

The water shortage emergency declaration triggers communication protocols described in Section 6.0 and compliance and enforcement actions described in Section 7.0.

9.0 FINANCIAL CONSEQUENCES OF WSCP
Because the City bills its customers in part per unit volume of water consumed, the City may experience a reduction in revenue upon implementation of water shortage levels.

The City policy is to maintain adequate water fund reserves in the event water shortage and subsequent demand reduction measures impact the City’s revenue.

To mitigate the financial impacts of reduced water sales during a drought, the City Council has the authority to impose a drought surcharge on water rates. This surcharge could be

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a flat fee per hundred cubic feet (HCF) that is intended to provide the City’s water utility with dependable revenues when water use reduction plans are in effect. The City has traditionally used a “postage stamp” rate for all water sales. With reduction in sales, the fixed costs will remain, imposing a loss on the utility (expenses in excess of revenues).

An advantage to the drought surcharge is that it is designed and set to allow sufficient revenue to meet all costs for the utility while also achieving conservation. The water utility also has reserves that it has used in the past as a rate stabilization fund. These reserves are being used to help reduce the rate impact from ever -increasing wholesale costs and the lower water sales due to the recent drought and slow recovery of water use.

Additionally, the Utility is currently developing a long range financial and rate stabilization plan. The water utility’s reserves are intended to be at the level that is sufficient to cover short-term loss of revenues due to a drought or other short-term catastrophic loss of sales.

Reserves are adequately funded as part of the rate setting process.

10.0 MONITORING AND REPORTING
The City water system is fully metered, from its water supply sources to individual customer meters. These meters may be used as monitoring tools for compliance and reporting purposes. The City’s water system is fully set up for automated meter reading (AMR); the City plans to upgrade the entire system to AMI as soon as reasonably possible. AMI would allow the City to monitor customer water usage in real time as necessary for assessing compliance with demand reduction actions and helping customers achieve reduction goals.

If reduction goals are not met through implementation of the WSCP (during any water shortage level), the Director of Water & Sewer Utilities ( Director) will notify the City Council, and more stringent action will be taken. Additionally, if it is determined that this WSCP requires refinements to achieve reduction targets, the City will revise the WSCP according to the procedures discussed in Section 11.0 and then adopt it and make it available as discussed in Section 12.0.

11.0 WSCP REFINEMENT PROCEDURES
This WSCP is an adaptive management plan. It is subject to refinements as needed to ensure that the City’s shortage response actions and mitigation strategies are effective and produce the desired results. Based on monitoring described in Section 10.0 and the need for compliance and enforcement actions described in Section 7.0, the City may adjust its response actions and may modify its WSCP. When a revised WSCP is proposed, the revised WSCP will undergo the process described in Section 12.0 for adoption by the City Council and distribution to the County, its customers, and the general public.

Feedback from City staff and the public is important in refining or incorporating new actions. The City seeks input from staff who interface with customers to gauge the effectiveness of its response actions and for response action ideas. The City seeks input from its customers and the general public through its website and through regularly scheduled City Council meetings.

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Customer water meter data may be evaluated for each customer sector or each individual customer. The City tracks water use violations and may evaluate their frequency to determine restrictions that customers may not be able to meet. This evaluation may also show water demand reduction actions that customers may effectively implement.

12.0 PLAN ADOPTION, SUBMITTAL, AND AVAILABILITY
The WSCP may be adopted concurrently with the City’s UWMP, by separate resolution , and may be revised and adopted at any time by the City. Prior to adoption, a duly noticed public hearing is conducted. A hard copy and electronic copy of the WSCP will be submitted to DWR within 30 days of adoption.

No later than 30 days after submittal to DWR, copies of the WSCP will be available at the City’s offices. A copy will also be provided to the County. An electronic copy of this WSCP will also be available for public review and download on the City’s website.

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Not included with this submittal.

Appendix H

DRAFT REPORT | MAY 2026
EARYEAR2020

City of Santa Clara
Water Shortage Contingency Plan

Prepared for
City of Santa Clara

Project No. 1078-60-23-01

Prepared by: Elizabeth Drayer, PE, RCE #46872 Date

QA/QC Review: Rhodora Biagtan, PE, RCE #59371 Date

"''
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Table of Contents

1.0 Introduction ............................................................................................................. 1

2.0 Water Supply Reliability Analysis .......................................................................... 1

3.0 Annual Water Supply and Demand Assessment Procedures ............................. 1

3.1 Decision-Making Process .................................................................................... 2

3.1.1 AWSDA Finding: Sufficient Water Supply to Meet Expected Demands ...... 3

3.1.2 AWSDA Finding: Available Water Supply Will Not Meet Demands ............. 3

3.2 Key Data Inputs ................................................................................................... 4

3.3 Assessment Methodology .................................................................................... 5

4.0 Standard Water Shortage Levels ........................................................................... 6

5.0 Shortage Response Actions .................................................................................. 7

5.1 Demand Reduction Actions ................................................................................. 8

5.2 Additional Mandatory Restrictions ...................................................................... 10

5.2.1 Water Features and Swimming Pools ....................................................... 10

5.3 Supply Augmentation and Other Actions ........................................................... 10

5.4 Locally Appropriate Operational Changes ......................................................... 11

5.5 Emergency Response Plan................................................................................ 11

6.0 Communication Protocols .................................................................................... 12

6.1 Communication for Foreseeable Events ............................................................ 12

6.2 Communication for Unforeseeable Events ......................................................... 13

7.0 Compliance and Enforcement .............................................................................. 13

7.1 Compliance and Enforcement Procedures ........................................................ 13

8.0 Legal Authorities ................................................................................................... 14

9.0 Financial Consequences of WSCP ...................................................................... 14

10.0 Monitoring and Reporting................................................................................... 15

11.0 WSCP Refinement Procedures .......................................................................... 15

12.0 Plan Adoption, Submittal, and availability ........................................................ 16

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Table of Contents

LIST OF TABLES
Table 1. Schedule of Annual Water Supply and Demand Assessment (AWSDA) Activities ...................................................................................... 2 Table 2. Schedule of Decision-Making Activities if AWSDA Indicates Supply May Not Meet Demands .............................................................................. 4 Table 3. Water Shortage Contingency Plan Levels (DWR Table 8-1) ........................ 7 Table 4. Demand Reduction Actions (DWR Table 8-3 Retail) ................................... 9 Table 5. Supply Augmentation and Other Actions (DWR Table 8-2 Retail) ............. 11

LIST OF ACRONYMS AND ABBREVIATIONS
AB Assembly Bill 1
AMI Advanced Metering Infrastructure 6
AMR Automated Meter Reading 15
AWSDA Annual Water Supply and Demand Assessment 2
City City of Santa Clara 1
County Santa Clara County
CWC California Water Code
Director Director of Water & Sewer Utilities 2
DWR Department of Water Resources 2
ERP Emergency Response Plan 11
HCF Hundred Cubic Feet
Legislature California State Legislature 1
MG Million Gallons 10
SB Senate Bill 1
SCMC City of Santa Clara Municipal Code
SFPUC San Francisco Public Utilities Commission
UWMP Urban Water Management Plan
WSCP Water Shortage Contingency Plan 1

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Water Shortage Contingency Plan

1.0 INTRODUCTION
This plan presents the City of Santa Clara ’s (City) Water Shortage Contingency Plan (WSCP). The WSCP describes the City’s strategic plan in preparation for and response to water shortages, with a goal to proactively prevent catastrophic service disruptions. It includes water shortage conditions and associated actions that will be implemented in the event of a water supply shortage. As part of the WSCP, the City’s legal authorities, communication protocols, compliance, and enforcement, and monitoring and reporting are included.

A water shortage may occur due to several reasons, such as climate change, drought, and catastrophic events. Drought, regulatory action constraints, and natural and manmade disasters may occur at any time. A water shortage means that the available water supply is insufficient to meet the normally expected customer water use.

In 2018, the California State Legislature (Legislature) enacted two policy bills, (Senate Bill (SB) 606 (Hertzberg) and Assembly Bill (AB) 1668 (Friedman)) (2018 Water Conservation Legislation), to establish a new foundation for drought planning to adapt to climate change and the resulting longer and more intense droughts in California. The 2018 Water Conservation Legislation set new requirements for water shortage contingency planning.

The City’s WSCP is consistent with the 2018 Water Conservation Legislation requirements. The City intends for this WSCP to be an adaptive management plan so that it may assess response action effectiveness and adapt to emergencies and catastrophic events. Refinement procedures and adoption requirements are provided in this plan to allow the City to modify this WSCP outside of the U rban Water Management Plan (UWMP) process.

2.0 WATER SUPPLY RELIABILITY ANALYSIS
The City’s water supply planning analysis and reliability are discussed in the City’s most recent UWMP. A summary of the City’s existing and projected water use is provided in Chapter 4 of the UWMP. Its existing and planned water supplies by source are described in Chapter 6. And its water supply reliability assessment and the drought risk assessment are provided in Chapter 7. The City’s seismic risk assessment and mitigation plan are discussed in Chapter 8.

The City conducts an annual water supply and demand assessment to plan for potential water shortages, as described below in Section 3.0. The analysis associated with this WSCP was developed in the context of the City’s water supply sources and reliability.

3.0 ANNUAL WATER SUPPLY AND DEMAND ASSESSMENT

PROCEDURES
Starting July 1, 2022, California Water Code (CWC) Section 10632.1 require d water suppliers to conduct an Annual Water Supply and Demand Assessment (AWSDA) and submit an Annual Water Shortage Assessment Report to the Department of Water

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Resources (DWR). The assessment is conducted for the current year’s upcoming dry season and the next year, assuming that the next year will be a dry year. This WSCP provides the procedures for the City to conduct its AWSDA. The findings from that assessment will provide information for City’s Annual Water Shortage Assessment Report.

The procedures provided in this section are intended to assist the City in planning for potential, foreseeable shortage in water supplies. These procedures provide the steps the City needs to take that may lead to declaring a water shortage emergency and associated water shortage level (see Section 4.0) and implementation of water shortage response actions (see Section 5.0).

3.1 Decision-Making Process
The City uses the decision -making process described in this section to consistently determine its water supply reliability on an annual basis. The City may adjust and improve this process as needed.

The City’s Water & Sewer Utilities Department is responsible for preparing the City’s AWSDA and Annual Water Shortage Assessment Report and for submitting the Annual Water Shortage Assessment Report to DWR by July 1 of each year. The Water & Sewer Utilities Department will gather key data inputs described in Section 3.2 and conduct the assessment in accordance with Section 3.3. Each year, the City performs the assessment based on the San Francisco Public Utilities Commission ( SFPUC) and Valley Water’s anticipated water deliveries. After completing the AWSDA, City staff presents the Annual Water Shortage Assessment Report to the Water & Sewer Utilities Director for review.

In general, the City will follow the schedule of activities shown in Table 1 for conducting the AWSDA and decision making. These activities are described in further detail in the following subsections. Due to variations in climate and hydrologic conditions, the start and end dates shown in the table are approximate and may be adjusted as needed. The intent of the schedule is to allow shortage response actions to effectively address anticipated water shortage conditions in a timely manner while complying with the State’s reporting requirements.

Table 1. Schedule of Annual Water Supply and Demand Assessment (AWSDA) Activities
Schedule Activities Responsible Party
February Obtain monthly water use data by customer type from Finance Department for previous year.

Water & Sewer
Utility
February
Determine monthly water production data (surface water, potable groundwater, non-potable irrigation groundwater, recycled water) for previous year.

Water & Sewer
Utility
February Obtain population estimates for previous year from DOF (https://www.dof.ca.gov/Forecasting/Demographics/Estimates/) Water & Sewer
Utility
March
Complete analysis for previous year (supply and demand
comparison, hydrologic and regulatory conditions,
infrastructure constraints, etc.).

Water & Sewer
Utility

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Table 1. Schedule of Annual Water Supply and Demand Assessment (AWSDA) Activities
Schedule Activities Responsible Party
March
Calculate projected unconstrained demand for current year and identify/describe projection methods (projected
population growth, etc.).

Water & Sewer
Utility
April
Identify projected hydrologic conditions for current year and obtain any anticipated surface water supply constraints from wholesalers for current year.

Water & Sewer
Utility
April
Determine current conditions of groundwater supply and
groundwater table to anticipate any groundwater supply
constraints for current year.

Water & Sewer
Utility
April
Complete analysis for current year based on a “dry year.” Determine the anticipated monthly water supply reliability for the current year using calculation spreadsheet.

Water & Sewer
Utility
April
Determine if/when water supply shortages will occur and what WSCP stage the shortage will fall into. Determine what (if any) WSCP actions will need to be implemented to mitigate supply shortage.

Water & Sewer
Utility
May Prepare AWSDA presenting the findings and WSCP actions (if any) to be implemented.

Water & Sewer
Utility
May / June Present AWSDA findings to City Council, as needed. Water & Sewer Utility
by July Implement the WSCP actions as approved by City Council (if a water shortage is projected).

Water & Sewer
Utility
July Submit final AWSDA to DWR by July 1. Water & Sewer Utility
Note: Months are approximate and may be adjusted based on climate and hydrologic conditions. July 1 due date is a firm date.

3.1.1 AWSDA Finding: Sufficient Water Supply to Meet Expected Demands If the AWSDA finds that available water supply will be sufficient to meet expected demands for the current year and one subsequent dry year, no further action is required.

City staff will submit the Annual Water Shortage Assessment Report to DWR by July 1 of each year.

3.1.2 AWSDA Finding: Available Water Supply Will Not Meet Demands Should the AWSDA find that available supply will not meet expected demands, the City will coordinate interdepartmentally, with the region’s other water service providers , and with Santa Clara County (County) for the possible proclamation of a n emergency. The Water & Sewer Utilities Director or their designee will present the finalized assessment to City Council, along with recommendations on water shortage condition determination and actions. Recommended actions may include declaration of a water shortage emergency, declaration of a water shortage condition, and water shortage actions.

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Based on the findings of the AWSDA, if a water shortage condition exists, the City Council will adopt a resolution declaring a water shortage emergency and an associated water shortage condition and authorizing water shortage actions. The Water & Sewer Utilities will then prepare the City’s Annual Water Shortage Assessment Report, incorporating the City Council determinations and approved actions. The schedule of decision -making activities is provided in Table 2. The start and end dates and the activities s hown in this table are approximate and may be adjusted as needed.

Table 2. Schedule of Decision-Making Activities if AWSDA Indicates Supply May Not Meet Demands
Schedule Activities Responsible Party
May
Based on finalized determinations of Annual Assessment
regarding water shortage condition and recommended actions, prepare recommendations on water shortage condition
determination and actions.

Water & Sewer
Utility and City
Manager
May Prepare ordinances or resolutions approving determinations and actions.

Water & Sewer
Utility and City
Attorney
May
Coordinate interdepartmentally, with the region’s water service providers, and with the County for the possible proclamation of a local emergency.

Water & Sewer
Utility
May
Based on determinations of the AWSDA, prepare the Annual Water Shortage Assessment Report with recommendations
on water shortage condition. Submit to Water & Sewer Utilities Director.

Water & Sewer
Utility
May
Present finalized determinations and recommendations to City Council, along with ordinances or resolutions approving determinations and actions.

Water & Sewer
Utility and City
Attorney
May / June
Receive presentation of finalized determinations and
recommendations. Make determination of degree of
emergency and act on resolutions that declare a water
shortage emergency condition. Authorize water shortage
response actions for implementation.

City Council
May / June Revise AWSDA to include City Council determinations and approved actions.

Water & Sewer
Utility
June
If a water shortage emergency condition is declared,
implement the WSCP and the water shortage response
actions as approved by City Council.

Water & Sewer
Utility and City
Attorney
July 1 Finalize AWSDA and Annual Water Shortage Assessment Report and submit to DWR (see Table 1).

Water & Sewer
Utility

3.2 Key Data Inputs
The AWSDA is required to evaluate supply and demands for the current year and one subsequent dry year. The following key data inputs will be used to evaluate the City’s water supply reliability.

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Planned water supplies are used as input to the AWSDA for the current year and the following one dry year. The subsequent dry year may be similar to a single dry year as defined in Chapter 7 of the City’s most recently adopted UWMP. In planning for water supplies, the following factors are considered:
• Hydrological conditions
• Regulatory conditions
• Contractual constraints
• Surface water and groundwater quality conditions
• Groundwater well production limitations
• Infrastructure capacity constraints or changes
• Capital improvement projects implementation
• Development Planning
Planned water supply sources and quantities will be described and be reasonably consistent with the supply projections in Chapter 6 ( Normal-Year Water Supply Characterization) of the City’s most recent UWMP. Should the supply sources and projections deviate significantly from the UWMP, the City will provide an explanation addressing the difference.

Planned unconstrained water demands are used as input to the AWSDA for the current year and the following one dry year. Unconstrained water demands are customer demands where no water conservation measures are in effect. In planning for water demands, the following factors are considered:
• Weather conditions
• Water year type
• Population changes (e.g., due to development projects) • Anticipated new demands (e.g., changes to land use)
• Pending policy changes that may impact demands
• Infrastructure operations
Planned water demands types and quantities will be described and be reasonably consistent with the demand projections in Chapter 4 (Water Use Characterization) of the City’s most recent UWMP. Should the demand projections deviate significantly from the UWMP, the City will provide an explanation addressing the difference.

3.3 Assessment Methodology
In preparing the AWSDA, the City will use the following assessment methodology and evaluation criteria to evaluate the City’s water supply reliability for the current year and following one dry year.

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The City will use the AWSDA Reporting Tables workbook provided by DWR as a resource in the WUEdata Portal1 to plan for current year and future year demands. Planned supply and demand inputs described in Section 3.2 will be entered in the spreadsheet in annual increments, or closer time intervals as necessary during water shortage conditions.

Supply and demand will be compared to determine the reliability of the City’s water supply in the current year and the following one dry year. The City’s water supply for the current year and the following dry year will be determined reliable if water supp lies are equivalent to or exceed projected unconstrained water demands. If water supply cannot meet anticipated water demands in the current year or the following dry year, the extent of the water shortage condition will be determined, and the City will pr epare response actions in accordance with this WSCP. If a water shortage is anticipated, t he AWSDA findings will be presented to the City Council, along with recommended actions for City Council consideration.

4.0 STANDARD WATER SHORTAGE LEVELS
To provide a consistent regional and statewide approach to conveying the relative severity of water supply shortage conditions, the 2018 Water Conservation Legislation mandates that water suppliers plan for six standard water shortage levels that correspond to progressive ranges of up to 10, 20, 30, 40, 50 percent, and greater than 50 percent shortages from the normal reliability condition. Each shortage condition should correspond to additional actions water suppliers would implement to meet the severity of the impending shortages. A water shortage is the gap between available supply and projected demands.

Table 3 presents the City’s water shortage level s, which align with the state’s standard levels of water shortage. The City’s water shortage levels apply to both foreseeable and unforeseeable water supply shortage conditions.

1 California Department of Water Resources. “Resources for Urban Water Suppliers.” https://wuedata.water.ca.gov/manage_resources.asp?reportType=urban, last accessed September 22, 2025.

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Table 3. Water Shortage Contingency Plan Levels (DWR Table 8-1)

As described in Section 3.0, the City will conduct an AWSDA to determine its water supply condition for the current year and a subsequent dry year. Preparing the AWSDA helps the City ascertain the need to declare a water shortage emergency and water shortage condition for foreseeable events. In certain cases, the City may need to declare a water shortage emergency due to unforeseen water supply interruptions.

When the City anticipates or identifies that water supplies may not be adequate to meet the normal water supply needs of its customers, the City Council may determine that a water shortage exists and consider a resolution to declare a water shortage emergency and associated level. The shortage level provides direction on shortage response actions, as further described below.

5.0 SHORTAGE RESPONSE ACTIONS
CWC Section 10632(a)(4) requires shortage response actions that align with the defined shortage levels. The City’s shortage response actions consist of a combination of demand reduction, supply augmentation, and operational changes. The City’s suite of response action s depends on the event that precipitates a water shortage level, the Standard
Shortage
Levels
Percent
Shortage Range
Suppliers
Shortage
Levels
Percent
Shortage
Range
1 Up to 10% 1 Up to 10%
2 Up to 20% 2 Up to 20%
3 Up to 30% 3 Up to 30%
4 Up to 40% 4 Up to 40%
5 Up to 50% 5 Up to 50%
6 >50% 6 >50%
Check the box if the Supplier uses the
Standard six levels of water shortage.

Proceed to the next table.

NOTES:

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time of the year the event occurs, the water supply sources available, and the condition of its water system infrastructure.

In general, t he City plans to use a balanced approach, combining demand reduction, supply augmentation, and operational changes to respond to the event and the resulting water shortage level. The City will adapt its implementation of response actions to close the gap b etween water supplies and water demand and meet the water use goals associated with the declared water shortage level.

Meters within the City’s water system allow the City to compare current water demands with demand reduction goals and adjust its shortage response actions accordingly. The City water system is fully equipped with meters which can be read periodically to track the extent of the effectiveness of the City’s response actions.

Water production and water use can be compared to previous periods. This continuous monitoring allows the City to assess water system demands and compare it with its water demand reduction goals. The City may then adjust its shortage response actions as needed to balance demands with available water supplies. For example, the City may intensify its public outreach or more vigorously enforce compliance with water use prohibitions if needed water demand reduction goals are not met for any specific shortage level. Conversely, the City may reduce public outreach frequency or decrease compliance actions if demand reduction goals are exceeded.

The shortage response actions discussed in the following sections may be considered as tools that allow the City to respond to water shortage conditions. Shortage response actions are initiated at the shortage levels shown and continue to be implemented at higher shortage levels. Because the City may continuously monito r and adjust its response actions to reasonably equate demands with available supply, the extent to which the gap between water supplies and water demand will be reduced by implementation of each action is difficult to quantify and is provided as an estimate.

Certain response actions, such as public outreach and enforcement, support the effectiveness of other response actions and do not have a quantifiable effect on their own.

5.1 Demand Reduction Actions
During water shortage conditions, the City plans to reduce demand by implementing the actions shown in Table 4. Demand reduction actions are organized by the triggering water shortage level, and each action includes an estimate of how much its implementation will reduce the shortage gap. For each demand reduction action, Table 4 also indicates if the City uses compliance actions such as penalties, charges, or other enforcement. Demand reduction actions are initiated at the shortage levels shown and will con tinue to be implemented at higher shortage levels.

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Table 4. Demand Reduction Actions (DWR Table 8-3 Retail)

Yes
Volume or
Percentage
Drop down
Shortage Gap Reduction Value
(May be a range) (AF)
1 Expand Public Information
Campaign Percentage
Studies have shown that a
targeted public information
campaign during a drought
can reduce water use by 7 -
8%
-- Yes
1 Increase Water Waste Patrols Percentage 0-1 -- Yes
1 Other Percentage
Boosts the effectiveness of
other methods - not readily
quantifiable
Enforcement of permanent water use restriction
Ordinance (Muni Code 13.15.080) Yes
2 Increase Water Waste Patrols Percentage 0-1 -- Yes
2 Other Percentage
Boosts the effectiveness of
other methods - not readily
quantifiable
Enforcement of permanent water use restriction
Ordinance (Muni Code 13.15.080) Yes
2 Reduce System Water Loss Percentage 0-10 -- Yes
2 Decrease Line Flushing Percentage 0-1 -- Yes
2 Water Features - Restrict water use
for decorative water features, such
as fountains
Percentage 0-1 -- Yes
2 Other Percentage 0-1 Decorative water features must use recirculating water Yes 2 Other - Prohibit use of potable
water for construction and dust
control
Percentage 0-1 -- Yes
2 Other water feature or swimming
pool restriction Percentage 0-1 -- Yes
2 Other Percentage 0-1 New irrigation connections restricted to recycled water Yes 2 Other Percentage 0-1 Irrigation of golf courses restricted to recycled water Yes 2 Landscape - Limit landscape
irrigation to specific days Percentage 5-10 Outdoor watering days may be restricted based on water supply conditions Yes
3 Other Percentage 0-1 Potable water use for decorative water features prohibited Yes
3 Other Percentage 0-1 Irrigation of golf courses except greens and tees restricted, shall use recycled water if available Yes
3 Implement or Modify Drought Rate
Structure or Surcharge Percentage 5-30 -- Yes
3 Increase Frequency of Meter
Reading Percentage 0-5 -- Yes
4 Other Percentage
Boosts the effectiveness of
other methods - not readily
quantifiable
The City shall apportion the City's available supply of water among customers in the most reasonable manner
possible and the rules and regulations for water service may be amended to deal with the water shortage
emergency condition (Muni Code 13.15.140)
Yes
5 Other Percentage
Boosts the effectiveness of
other methods - not readily
quantifiable
The City shall apportion the City's available supply of water among customers in the most reasonable manner
possible and the rules and regulations for water service may be amended to deal with the water shortage
emergency condition (Muni Code 13.15.140)
Yes
6 Other Percentage 0-1 New pool construction and filling prohibited Yes 6 Other Percentage 0-1 New irrigation connections prohibited, recycled water allowed without restriction Yes
Is the Supplier completing this table using the standard six levels? (yes/no) How much is this going to reduce the shortage gap?
Shortage
Level
Demand Reduction Actions
Drop down list
These are the only categories that will
be accepted by the WUEdata online
submittal tool. Select those that apply.

Additional Explanation or Reference
(OPTIONAL)
Penalty, Charge,
or Other
Enforcement?
For Retail Suppliers
Only
Drop Down List

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5.2 Additional Mandatory Restrictions
In addition to the demand reduction actions listed in Table 4, the City has other water use restrictions and prohibitions that are enforced at all times listed under Section 1.C of the City’s Potable and Recycled Water System Rules and Regulations. 2 The State also mandates certain prohibitions, and the City will enforce all such requirements.

5.2.1 Water Features and Swimming Pools
Water shortage response would focus on providing sufficient supply to meet health and safety needs for residential customers. Tempering the uses for water features and swimming pools will be based on the severity of the water shortage condition. The relative total water use from these sources would be a consideration for how water features would be restricted during specific water shortage conditions. Water features are a relatively small discretionary use and may be impacted at any time during a triggered water shortage condition.

The City distinguishes special water features, such as decorative fountains and ponds, differently from pools and spas. Special water features are regulated separately. The City’s Potable and Recycled Water System Rules and Regulations Section 1.C requires recirculating water systems to be used for all water features. For decorative water features, recycled water shall be used where available. Covers are required on all new swimming pools and spas.

5.3 Supply Augmentation and Other Actions
The City has approximately 28.8 million gallons (MG) of potable water storage within the City’s service area to manage daily operations and mitigate the effects of a short -term (days) water supply interruption. As part of the City’s operations, the City repair s and replaces water distribution system infrastructure to reduce water system losses. Sources available to the City include an extensive local underground aquifer and imported water supplies delivered by two wholesale water agencies, SFPUC and Valley Water.

In a water shortage emergency, the City may increase groundwater supply or supplies from SFPUC and Valley Water. Supply augmentation and other actions that the City may implement during water supply emergencies are summarized in Table 5.

2 Potable and Recycled Water System Rules and Regulations City of Santa Clara, November 2024, https://www.santaclaraca.gov/our-city/departments-g-z/water-sewer-utilities, last accessed April 15, 2026.

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Table 5. Supply Augmentation and Other Actions (DWR Table 8-2 Retail)

5.4 Locally Appropriate Operational Changes
During a water shortage of any level, the City may elect to implement operational measures to support implementation of the WSCP. This may include hiring temporary workers, reassigning staff, and/or increasing overtime to provide staffing for a range of efforts, such as conducting Water Waste Patrols, implementing the communication protocols, responding to customer service requests, scheduling, and conducting site assessments and consultations, processing incentive and rebate applications, and increasing compliance and enforcement efforts. The City may also elect to increase monitoring of potable water usage , lower water system pressure and limit water main flushing. Operational changes will be considered at each level of water shortage to determine whether and when to implement such measures.

5.5 Emergency Response Plan
The City’s water shortage levels outlined in Section 4.0 apply to both foreseeable and unforeseeable water supply shortage conditions, including catastrophic water shortage conditions.

Yes
Volume or
Percentage
Drop down
Shortage Gap
Reduction Value
(May be a range)
(AF)
1 Other Actions (describe) Percentage 10
Increase groundwater use if needed,
combined with demand reduction
actions
2 Other Actions (describe) Percentage 20
Increase groundwater use, SFPUC, and/or
Valley Water to supplement supply that
is deficient, combined with demand
reduction actions
3 Other Actions (describe) Percentage 30
Increase groundwater use, SFPUC, and/or
Valley Water to supplement supply that
is deficient, combined with demand
reduction actions
4 Other Actions (describe) Percentage 40
Increase groundwater use, SFPUC, and/or
Valley Water to supplement supply that
is deficient, combined with demand
reduction actions
5 Other Actions (describe) Percentage 50
Increase groundwater use, SFPUC, and/or
Valley Water to supplement supply that
is deficient, combined with demand
reduction actions
6 Other Actions (describe) Percentage >50
Increase groundwater use, SFPUC, and/or
Valley Water to supplement supply that
is deficient, combined with demand
Is the Supplier completing this table using the standard six levels? (yes/no) How much is this going to reduce the
shortage gap?
Shortage
Level
Supply Augmentation Methods and
Other Actions by Water Supplier
Drop down list
These are the only categories that will
be accepted by the WUEdata online
submittal tool
Additional Explanation or Reference
(OPTIONAL)

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The City’s Emergency Response Plan (ERP) addresses catastrophic water shortage conditions. The ERP outlines response procedures associated with unforeseeable incidents such as a regional power outage , earthquake, infrastructure failure, and other events. More specifically, it addresses responses for water system losses including current water emergency interconnections, water demands under earthquake emergency conditions and non-earthquake emergencies. The ERP also identifies seven categories of response and the criteria that triggers that specific response to occur.

The communication procedures are also outlined in the ERP. In response to a drought, the ERP outlines the procedures the City is recommended to follow which includes: initial actions, continuous assessment and response procedures and after action monitoring and reporting. Steps for deactivation and demobilization of activated triggers and response actions are also identified to facilitate recovery procedures and return to normal operation. In addition, the effectiveness of the ERP is evaluated by the Depart ment staff on a periodic basis. This is to ensure that procedures and practices developed in the ERP are adequate and implemented properly . To protect the security of the City’s water system, the ERP is retained by the City as a confidential document.

6.0 COMMUNICATION PROTOCOLS
In the event of a water shortage, the City must inform its customers, the general public and interested parties, and local, regional, and state entities. Communication protocols for foreseeable and unforeseeable events are provided in this section. In any event, timely and effective communication must occur for a ppropriate response to the event.

City staff are provided with City email accounts and cell phones to communicate internally and externally.

6.1 Communication for Foreseeable Events
Water shortage may be foreseeable when the City conducts its AWSDA as described in Section 3.0. When the City determines the potential of a water shortage event, the City Council may determine and declare a water shortage emergency. The City will hold a duly noticed public meeting to present the current or predicted shortage. At the public meeting, the City Council will determine if a water shortage emergency condition exists and the degree of the emergency. The City Council will cons ider the shortage response actions triggered or anticipated to be triggered by the shortage level. As necessary, the City Council will act on the water shortage emergency declaration, associated water shortage level, and shortage response actions.

The City will follow the communication protocols and procedures below and may trigger any of them at any water shortage level:

1. If a water shortage emergency is anticipated, the City will coordinate interdepartmentally, with the region’s water service providers, and with the County for the possible proclamation of a local emergency.

2. The City will issue a public notice for a City Council meeting during which the AWSDA findings and recommendations for a water shortage emergency and shortage response actions are presented.

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3. The City will communicate actions to customers, the general public, and interested parties through a combination of bill stuffers and newsletters, website, press releases, and social media posts.

4. The City will communicate actions to relevant local, regional, and state officials and entities primarily through email correspondence.

6.2 Communication for Unforeseeable Events
A water shortage may also occur during unforeseeable events such as earthquakes, fires, infrastructure failures, civil unrest, and other catastrophic events. The City’s ERP provides specific communication protocols and procedures to convey actions during these events.

The City may trigger these communication protocols, depending on the event. In general, communications and notifications will proceed along the identified chain of command. All City staff are provided their communication responsibilities. The ERP also provides a list of relevant contacts to notify at the local, regional, and state level.

7.0 COMPLIANCE AND ENFORCEMENT
This section describes how the City will ensure compliance with and enforcement of provisions of this WSCP. The City’s procedures include protocols for treatment of violations and actions associated with more egregious levels of violation. The procedures include appeal and exemption processes.

7.1 Compliance and Enforcement Procedures
When a water shortage is anticipated, the City Council will adopt a resolution declaring a water shortage emergency condition and the regulations and restrictions that should be enforced in response to the declared water shortage level.

The City is metered system -wide, at production facilities and at each customer connection. Thus, water use can be quantified and compared to determine users’ extent of compliance to water reduction requirements. The City may also become aware of non-compliance through water waste reporting by the general public, the City’s dedicated water waste hotline, City staff inspections, and/or manual review of customer use data.

Upon receiving a water waste complaint, City staff will investigate the offending site’s water use history and make site visits to determine the cause of the waste. City staff will then reach out to the site to educate them on the City’s water waste policies and help them get into compliance. In addition, City staff uses this opportunity to further educate businesses and residents on current water conservation programs and what opportunities there may be to increase their water efficiency. While outreach an d education typically brings most water wasters into compliance, the City does retain the ability to levy fines of up to $1,000 and the installation of a flow restrictor to frequent offenders, per the City of Santa Clara Municipal Code ( SCMC) 13.15.220.

The Director of Water & Sewer Utilities or their designee is responsible for enforcement and penalties. Water users or property owners can appeal the notice of violation or the

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administrative fee by submitting a written request for appeal to the Director of Water & Sewer Utilities, per the City’s Potable and Recycled Water System Rules and Regulations.

8.0 LEGAL AUTHORITIES
SCMC Chapter 13.15 supports the City’s ongoing water use restrictions, including provisions for enforcement. The SCMC does not contain provisions for additional restrictions on water use during water shortages. Should a water shortage occur, the City would need to adopt an emergency ordinance to restrict water use as needed. The emergency ordinance would support the City’s water shortage contingency actions, including regulations and restrictions to be enacted in event of a water shortage.

At the time of a water shortage emergency, the City Council will, by resolution, declare a state of water shortage emergency and authorize implementation of the WSCP. A water shortage emergency declaration will be in effect upon proper findings made by the City Council and remain in effect until the City Council finds and declares by resolution that the water shortage emergency condition has abated, has changed in degree, or no longer exists.

When a water shortage is determined, the City will coordinate interdepartmentally, with the region’s water service providers, and with the County for the possible proclamation of a local emergency in accordance with under California Government Code, California Emergency Services Act (Article 2, Section 8558).

In a duly noticed meeting, the City Council will determine whether a water shortage emergency condition exists and, if so, the degree of the emergency and what regulations and restrictions should be enforced in response to the shortage. The City shall declare a water shortage emergency in accordance with CWC Chapter 3 of Division 1.

California Water Code Division 1, Section 350:

The governing body of a distributor of a public water supply…shall declare a water shortage emergency condition to prevail within the area served by such distributor whenever it finds and determines that the ordinary demands and requirements of water consumers cannot be satisfied without depleting the water supply of the distributor to the extent that there would be insufficient water for human consumption, sanitation, and fire protection.

The water shortage emergency declaration triggers communication protocols described in Section 6.0 and compliance and enforcement actions described in Section 7.0.

9.0 FINANCIAL CONSEQUENCES OF WSCP
Because the City bills its customers in part per unit volume of water consumed, the City may experience a reduction in revenue upon implementation of water shortage levels.

The City policy is to maintain adequate water fund reserves in the event water shortage and subsequent demand reduction measures impact the City’s revenue.

To mitigate the financial impacts of reduced water sales during a drought, the City Council has the authority to impose a drought surcharge on water rates. This surcharge could be

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a flat fee per hundred cubic feet (HCF) that is intended to provide the City’s water utility with dependable revenues when water use reduction plans are in effect. The City has traditionally used a “postage stamp” rate for all water sales. With reduction in sales, the fixed costs will remain, imposing a loss on the utility (expenses in excess of revenues).

An advantage to the drought surcharge is that it is designed and set to allow sufficient revenue to meet all costs for the utility while also achieving conservation. The water utility also has reserves that it has used in the past as a rate stabilization fund. These reserves are being used to help reduce the rate impact from ever -increasing wholesale costs and the lower water sales due to the recent drought and slow recovery of water use.

Additionally, the Utility is currently developing a long range financial and rate stabilization plan. The water utility’s reserves are intended to be at the level that is sufficient to cover short-term loss of revenues due to a drought or other short-term catastrophic loss of sales.

Reserves are adequately funded as part of the rate setting process.

10.0 MONITORING AND REPORTING
The City water system is fully metered, from its water supply sources to individual customer meters. These meters may be used as monitoring tools for compliance and reporting purposes. The City’s water system is fully set up for automated meter reading (AMR); the City plans to upgrade the entire system to AMI as soon as reasonably possible. AMI would allow the City to monitor customer water usage in real time as necessary for assessing compliance with demand reduction actions and helping customers achieve reduction goals.

If reduction goals are not met through implementation of the WSCP (during any water shortage level), the Director of Water & Sewer Utilities ( Director) will notify the City Council, and more stringent action will be taken. Additionally, if it is determined that this WSCP requires refinements to achieve reduction targets, the City will revise the WSCP according to the procedures discussed in Section 11.0 and then adopt it and make it available as discussed in Section 12.0.

11.0 WSCP REFINEMENT PROCEDURES
This WSCP is an adaptive management plan. It is subject to refinements as needed to ensure that the City’s shortage response actions and mitigation strategies are effective and produce the desired results. Based on monitoring described in Section 10.0 and the need for compliance and enforcement actions described in Section 7.0, the City may adjust its response actions and may modify its WSCP. When a revised WSCP is proposed, the revised WSCP will undergo the process described in Section 12.0 for adoption by the City Council and distribution to the County, its customers, and the general public.

Feedback from City staff and the public is important in refining or incorporating new actions. The City seeks input from staff who interface with customers to gauge the effectiveness of its response actions and for response action ideas. The City seeks input from its customers and the general public through its website and through regularly scheduled City Council meetings.

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Customer water meter data may be evaluated for each customer sector or each individual customer. The City tracks water use violations and may evaluate their frequency to determine restrictions that customers may not be able to meet. This evaluation may also show water demand reduction actions that customers may effectively implement.

12.0 PLAN ADOPTION, SUBMITTAL, AND AVAILABILITY
The WSCP may be adopted concurrently with the City’s UWMP, by separate resolution , and may be revised and adopted at any time by the City. Prior to adoption, a duly noticed public hearing is conducted. A hard copy and electronic copy of the WSCP will be submitted to DWR within 30 days of adoption.

No later than 30 days after submittal to DWR, copies of the WSCP will be available at the City’s offices. A copy will also be provided to the County. An electronic copy of this WSCP will also be available for public review and download on the City’s website.

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