Pleasanton City Council
June 2, 2026

Section 4 2025 Urban Water Management Plan
Water Use Characterization City of Pleasanton
Public Draft | May 2026
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4.4 Distribution System Water Loss

Water loss is the sum of apparent and real losses. Apparent loss is associated with metering inaccuracies, billing and administrative errors, authorized unmetered uses (e.g., system flushing and firefighting), and unauthorized uses. Real loss is associated with physical loss of water through line breaks, leaks and seeps, and overflows of storage tanks. Since 2016, urban retail water suppliers have been required under CWC §10608.34 and CCR §638.1 et seq to quantify distribution system water losses using the American Water Works Association (AWWA) Free Water Audit Software (i.e., “water loss audit reports”).

Table 4-2 summarizes water loss audit reports submitted to DWR for the City’s water system since 2020.

The water loss audit reports are available through DWR’s Water Use Efficiency Data Portal. 5 Table 4-2 Water Loss Audit Reporting Water Code Section 10631(d)(3)(A) (DWR Table 4-5) PWS ID #
(reported in DWR Table 2-1)
Reporting Period Submitted to DWR Water Loss
Audit Program (yes/no)
CA0110008
2020 Yes
2021 Yes
2022 Yes
2023 Yes
2024 Yes
In 2022, the SWRCB adopted water loss performance standards for urban retail water suppliers, aiming for a significant long -term reduction in real losses. Effective starting in 2023, the SWRCB established individual volumetric standards for each urban retail water supplier, calculated to reflect the life -cycle cost-effective level of water loss based on specific system characteristics. While annual reporting is ongoing, suppliers will be required to start meeting individual volumetric loss standards over a three-year period, with full compliance required by January 1, 2028 . These standards constitute the water loss component of the MCCWL regulatory framework (SWRCB, 2022).

CWC §10631 (3)(c) requires that this UWMP demonstrate whether Pleasanton has met the distribution loss standards enacted by the SWRCB pursuant to CWC §10608.34. Table 4-3 demonstrates that Pleasanton has met the 2028 Water Loss Standard for Apparent Water Loss but does not currently meet the Real Water Loss Standard. The City is in the process of requesting an adjustment to its Real Water Loss Standard from the SWRCB.

5 DWR’s Water Use Efficiency Data Portal: https://wuedata.water.ca.gov/awwa_plans  CWC §10631(3)
(A) The distribution system water loss shall be quantified for each of the five years preceding the plan update, in accordance with rules adopted pursuant to Section 10608.34. (B) The distribution system water loss quantification shall be reported in accordance with a worksheet approved or developed by the department through a public process. The water loss quantification worksheet shall be based on the water system balance methodology developed by the American Water Works Association. (C) In the plan due July 1, 2021, and in each update thereafter, data shall be included to show whether the urban retail water supplier met the distribution loss standards enacted by the board pursuant to Section 10608.34.

Section 4 2025 Urban Water Management Plan
Water Use Characterization City of Pleasanton
Public Draft | May 2026
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Table 4-3 Progress Towards 2028 Water Loss Standard (DWR Table 4-6) PWS ID #
Did the
SWRCB
Calculate a
Water Loss
Standard
for this
PWS?
(y/n)
Real Water Loss Apparent Water Loss
State Water Board
Standard
Most Recent AWWA Water
Loss Audit
Real
Water
Loss Per
Unit per
Day
State Water Board
Standard
Most Recent AWWA Water
Loss Audit
Apparent
Water
Loss Per
Unit per
Day
2028
Real
Water
Loss
Standard
per Unit
per Day
(a)
Units for
Real
Water
Loss
(b)
Number of
Connections
(c)
Volume of
Total
Real Loss
(AF)
(c)
2028
Apparent
Water
Loss
Standard
per Unit
per Day
(a)
Units for
Apparent
Water
Loss
(b)
Number of
Connections
(c)
Volume of
Total
Apparent
Loss (AF)
(c)
CA0110008 Yes 18.8 GPSCD 22,358 862 34.3 13.3 GPSCD 22,358 310 12.4 NOTES:
(a) Provided by SWRCB: https://www.waterboards.ca.gov/conservation/docs/waterlosscontrol/standards -released.xlsx (b) GPSCD = Gallons per Service Connection per Day.
(c) Sourced from Pleasanton’s 2024 American Water Works Association (AWWA) Water Audit Report.

Section 4 2025 Urban Water Management Plan
Water Use Characterization City of Pleasanton
Public Draft | May 2026
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4.5 Projected Water Demand
Future water demands within Pleasanton’s service area are estimated as the sum of demands associated with existing users and those associated with planned/proposed new development.

4.5.1 Basis of Demand Projections
The City’s demand projections account for planned/proposed development projects within Pleasanton’s service area. As part of the 2024 WDSCMP, the City evaluated fu ture demands related to new development in its service area (see also Section 3.4). The demand projections reflect new development for the following land uses:
• Residential – The City’s RHNA allocation for the 6th Cycle (2023-2031 Housing Element) was 5,965 units. To meet this requirement, the City’s 2023 -2031 Housing Element identified planned/proposed single family and multi-family residential developments in four categories: (1) Approved Entitled Sites, (2) ADUs, (3) Housing Sites, and (4) Rezone Sites. The City estimated the number of new dwelling units w ithin each category based on general site density information listed for each site, then calculated estimated water demand considering the number of people per dwelling unit and per capita water use. Larger multi-family residential developments are anticipated to include DIMs for landscape water use. T herefore, a portion of the water demand associated with these developments is accounted for as new i rrigation demand , rather than residential demand.
• Industrial – A proposed new development in the east Pleasanton area involves a light industrial component. (The project also involves residential development that is identified in the Approved Entitled Sites portion of the 2023 -2031 Housing Element and reflected in the future residential water use projections.) The a dditional water demand associated with the proposed industrial project (102 AFY by 2045) is treated as an incremental increase to those identified in the 2023- 2031 Housing Element .

The WDSCMP projected that commercial water demands will remain relatively constant through 2045.The City estimates that planned development will increase the total water demand within its service area by 3,170 AFY between 2025 and 2045.

4.5.2 Water Savings from Codes, Standards, Ordinances, or Transportation and Land Use Plans

Water savings from passive conservation may reduce water use intensity among existing and future customers. Passive conservation refers to water savings resulting from actions and activities from codes,  CWC §10631(d)(4)
(A) Water use projections, where available, shall display and account for the water savings estimated to result from adopted codes, standards, ordinances, or transportation and land use plans identified by the urban water supplier, as applicable to the service area.
(B) To the extent that an urban water supplier reports the information described in subparagraph (A), an urban water supplier shall do both of the following:
(i) Provide citations of the various codes, standards, ordinances, or transportation and land use plans utilized in making the projections.
(ii) 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.

Section 4 2025 Urban Water Management Plan
Water Use Characterization City of Pleasanton
Public Draft | May 2026
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standards, ordinances, and/ or land use changes (e.g., resulting from transportation or land use plans).

Various factors contribute to passive savings, such as: (1) natural replacement of existing plumbing fixtures with higher efficiency models based on current plumbing code standards, (2) retrofits required under CALGreen Building Code Standards, (3) landscape retrofits for turf removal, native and drought - tolerant plant, and high efficiency irrigation, and (4) restricted use of potable water for nonfunctional turf irrigation on commercial, industrial, and institutional (CII) properties consistent with AB 1572 and the MCCWL regulation.

Water savings from active conservation also reduce water use intensity. Pleasanton’s Water Conservation Programs, including education programs, financial incentives (e.g., rebates), and other DMM, are further discussed in Section 9.

While both active and pass ive conservation savings are an integral component of the City’s water management, these savings are not reflected in the City’s projected future water demands included in this Plan (Table 4-4). As noted in Table 4-4 and further described in Section 4.5.4, the City’s water demand projections in this Plan include lower-income residential demands.

Table 4-4 Inclusion in Water Use Projections (DWR Table 4-3) Are Future Water Savings Included in Projections? No
If "Yes" to above: State the section or page number, in the cell to the right, where citations of the codes, ordinances, or otherwise are utilized in demand projections are found.

Are Lower-Income Residential Demands Included in Projections? Yes (OPTIONAL) If the method for accounting Lower Income Residential Demands has been included, provide page number where this accounting can be found. 4-10

4.5.3 Projected Total Water Demand
Table 4-5 and Figure 4-3 identify the City’s projected total water demand (potable and non -potable) by sector in five-year increments through 2045. Pleasanton’s total annual water demand is estimated to be about 19,172 AFY in 2045, including a potable demand of 1 7,832 AFY and a recycled water demand of 1,340 AFY.

As further discussed in Section 6.5, Pleasanton expects to increase recycled water deliveries by 112 AFY (when compared to 20206 recycled water use ) by connecting seven new customers along the exis ting recycled water distribution line. Increased use of recycled water for irrigation will replace potable water use for existing customers and partially offset an increase in potable demand related to new development.

6 The City’s recycled water use in 2025 was lower than typical, whereas 2020 recycled water demand (1,228 AFY) aligns with the longer term average over recent years.

Section 4 2025 Urban Water Management Plan
Water Use Characterization City of Pleasanton
Public Draft | May 2026
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Table 4-5 Total Uses of Potable and Non-Potable Water - Projected (DWR Table 4-2) Use Type Additional
Description
Projected Water Use (a)
Level of Treatment
When Delivered
2030 2035 2040 2045
Single Family Potable 7,351 7,481 7,612 7,758
Multi-Family Potable 1,623 1,806 1,991 2,197
Commercial Potable 1,610 1,610 1,610 1,610
Industrial Potable 64 93 121 153
Landscape Irrigation with
Potable Water
Potable 2,989 3,430 3,873 4,367
Landscape Irrigation with
Recycled Water
Non-Potable 1,242 1,273 1,305 1,340
Distribution
System Water Loss
Potable 1,522 1,595 1,667 1,748
Subtotal Potable 15,159 16,015 16,874 17,832
Subtotal Non-Potable 1,242 1,273 1,305 1,340
Total 16,401 17,288 18,178 19,172

Figure 4-3 Total Uses of Potable and Non-Potable Water – Projected 0 4,000
8,000
12,000
16,000
20,000
2025 (Actual) 2030 2035 2040 2045
Water Use (AFY)
Single Family Multi-Family Commercial
Industrial Landscape - Potable Landscape - Recycled Water Distribution System Water Loss

Section 4 2025 Urban Water Management Plan
Water Use Characterization City of Pleasanton
Public Draft | May 2026
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4.5.4 Water Use by Lower Income Households

Passed in 2005 , SB 1087 Chapter 727 amended CGC §65589.7 and CWC §10631.1, requiring that local governments provide a copy of their adopted Housing Element to water and sewer providers. Additionally, it requires that water providers grant priority for service allocations to developments that include housing units for lower income families and workers. The UWMP Act requires that water providers estimate water demands by lower income single and multi-family households. Health and Safety Code 50079.5 defines a lower-income household as a household that earns less than 80% of the area median income.

Based on Pleasanton’s 2023-2031 Housing Element (Pleasanton, 2023), about 20% of Pleasanton’s dwelling units in 2023 housed residents earn less than 80% of Alameda County’s area median income. The 2023-2031 Housing Element also identifies the number of low -income dwelling units needed through 2031. If future development in the City is realized as depicted in the 2023-2031 Housing Element , about 24% of the City’s future residential water demand will be associated with lower income households. Water demand associated with these households were included in the total potable water demand projections described above.

Water demands associated with lower income households are included in the water use projections shown in Table 4-5 (indicated in Table 4-4).

4.5.5 Characteristic Five-Year Water Use

In accordance with CWC §10635(b)(3), UWMPs must provide a five-year DRA (see Section 7.5). As a first step, DWR suggests that water suppliers estimate their unconstrained water demand for the next five years (20 26-2030). Unconstrained water demand is water use in the absence of drought water use restrictions. These numbers can then be adjusted to estimate the five-years’ cumulative drought effects.  CWC §10631.1
(a) The water use projections required by Section 10631 shall include projected water use for single- family and multifamily residential housing needed for lower income households, as defined in Section 50079.5 of the Health and Safety Code, as identified in the housing element of any city, county, or city and county in the service area of the supplier.
(b) It is the intent of the Legislature that the identification of projected water use for single-family and multifamily residential housing for lower income households will assist a supplier in complying with the requirements under Section 65589.7 of the Government Code to grant a priority for the provision of service to housing units affordable to lower income households.
 CWC §10635
(b) Every urban water supplier shall include, as part of its urban water management plan, a drought risk assessment for its water service to its customers as part of information considered in developing the demand management measures and water supply projects and programs to be included in the urban water management plan. The urban water supplier may conduct an interim update or updates to this drought risk assessment within the five-year cycle of its urban water management plan update. The drought risk ass essment shall include each of the following…
(3) A comparison of the total water supply sources available to the water supplier with the total projected water use for the drought period. (Emphasis added).
(4) 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.

Section 4 2025 Urban Water Management Plan
Water Use Characterization City of Pleasanton
Public Draft | May 2026
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The DRA accounts for this increase in unconstrained water demand. Table 4-6 shows unconstrained demands for 2026-2030.

Table 4-6 Characteristic Five-Year Water Use (AFY)
2026 2027 2028 2029 2030
14,269 14,802 15,335 15,868 16,401
NOTE:

The table shows unconstrained demand (i.e., demand in the absence of drought water use restrictions).

4.6 Water Use Sectors Not Included in Demand Projections Historical and projected water demands for the water use sectors described in CWC §10631(d)(1)(G) through (I) and listed below were not included in Pleasanton ’s water demand calculations because they are not applicable to Pleasanton:
• Sales to other agencies;
• Saline water intrusion barriers, groundwater recharge, or conjunctive use, or any combination thereof; and
• Agricultural.

4.7 Climate Change Considerations
As is common throughout California, water demands in Pleasanton exhibit seasonality with peak demands in summer months when outdoor water use is highest. Climate change may alter water demand patterns, particularly for outdoor water use, due to intense heat waves, rising temperatures, and changes in precipitation, wind, and humidity.

Climate change may impact Pleasanton’s future water demand and use patterns. Warmer temperatures are expected to increase irrigation demand and lengthen the timeframe for seasonal outdoor water use.

In addition, climate change may increase the frequency and intensity of wildfires, which c ould increase water demands. Increased water efficiency and conservation, along with expanded use of recycled water, could mitigate the effects of climate change on water demands.

The effects of climate change on future water demands are challenging to predict. The City’s demand projections presented in Section 4.5.3 do not explicitly account for potential climate change impacts.

However, as discussed in Section 7, Zone 7 prepared the 2025 Demand Assessment , which involved conducting scenario planning to consider potential climate change impacts on water supply and demand.

To account for potential climate change impacts on outdoor water use over the UWMP planning horizon, Zone 7 evaluated a scenario that incorporates a 5% increase to its retailers’ demands using a linear adjustment from 0% in 2025 to 5% in 2045, resulting in a proportional increase in outdoor water demands over time. As the actual impact of climate change on water use becomes clearer, this value can easily be updated in the model that informs the 2025 Demand Assessment.

A general discussion regarding the potential impacts of climate change on Zone 7’s water supplies is provided in Section 6.10.1.

Section 4 2025 Urban Water Management Plan
Water Use Characterization City of Pleasanton
Public Draft | May 2026
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4.8 Coordinating Water Use Projections

Pleasanton purchases wholesale water supply from Zone 7. Compliant with CWC §10631(h), Pleasanton coordinated with Zone 7 throughout the process of preparing the 2025 UWMP and provided water demand projections through 2045 to inform Zone 7’s UWMP.

4.9 Urban Water Use Objective

In July 2024, California enacted the MCCWL regulation (implementing SB 606 and AB 1668) to support long-term water conservation and drought resilience. In part, this regulation requires water suppliers to calculate an annual UWUO and to implement Performance Measures for CII water users. The UWUO is a water budget-based approach to water use efficiency that is unique to each urban water supplier and reflects an aggregate of the following components: (1) residential indoor water standard, (2) residential outdoor water budget, (3) CII landscape outdoor water use standard (for landscapes with DIMs), (4) water loss standard , (5) variance, and (6) bonus. Per the MCCWL regulation, over the next 25 years, the  CWC § 10631(h)
An urban water supplier that relies upon a wholesale agency for a source of water shall provide the wholesale agency with water use projections from that agency for that source of water in five- year increments to 20 years or as far as data is available.
 CWC § 10609.20
(a) Each urban retail water supplier shall calculate its urban water use objective no later than January 1, 2024, and by January 1 every year thereafter.
(b) The calculation shall be based on the urban retail water supplier’s water use conditions for the previous calendar or fiscal year.
 CWC § 10609.22
(a) An urban retail water supplier shall calculate its actual urban water use no later than January 1, 2024, and by January 1 every year thereafter.
(b) The calculation shall be based on the urban retail water supplier’s water use for the previous calendar or fiscal year.
 CWC § 10609.24
(a) An urban retail water supplier shall submit a report to the department no later than January 1, 2024, and by January 1 every year thereafter. The report shall include all of the following:
(1) The urban water use objective calculated pursuant to Section 10609.20 along with relevant supporting data. (2) The actual urban water use calculated pursuant to Section 10609.22 along with relevant supporting data. (3) Documentation of the implementation of the performance measures for CII water use. (4) A description of the progress made towards meeting the urban water use objective. (5) The validated water loss audit report conducted pursuant to Section 10608.34. (b) The department shall post the reports and information on its internet website. (c) The board may issue an information order or conservation order to, or impose civil liability on, an entity or individual for failure to submit a report required by this section.

Section 4 2025 Urban Water Management Plan
Water Use Characterization City of Pleasanton
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efficiency standards for indoor residential and outdoor residential and CII water use will become increasingly stringent.

Beginning in January 2024, urban retail water suppliers are required to calculate and report their annual UWUO. Pleasanton submitted its required reports in both 2024 and 2025, and in both years, water use was about 15% less than the City’s UWUO. Pleasanton’s UWUO submittals are available through DWR’s Water Use Efficiency Data Portal.7
Beginning in January 2027, urban retail water suppliers are required to assess and report compliance with their respective UWUO.

7 DWR’s Water Use Efficiency Data Portal: https://wuedata.water.ca.gov/uwuo_plans

Section 5 2025 Urban Water Management Plan
SB X7-7 Baseline, 2020 Target, and 2025 Reporting City of Pleasanton Public Draft | May 2026
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5 SB X7-7 BASELINE, 2020 TARGET, AND 2025 REPORTING

SB X7-7 mandated a reduction in urban per capita water use across California by 2020. To achieve this goal, SB X7-7 required each urban r etail supplier to establish an urban water- use target (2020 Target), contributing to the State’s collective efforts.

Pleasanton’s 2020 UWMP documents the data used to calculate the City’s 2020 Target and demonstrates compliance based on per capita water use in 2020. Because t he CWC does not set an end date for compliance reporting on the 2020 Target, Table 5-1 summarizes the same metrics and values from the 2020 UWMP, consistent with DWR recommendations.

Table 5-1 SB X7-7 2020 Target Progress (DWR Table 5-1)
Was Supplier
part of a
merger or
consolidation
since 2020?
Regional
Alliance
Target or
Individual
Target?
2020
Target
Actual
2020
GPCD
Did Supplier
Achieve
Targeted
Reduction for
2020?
No Individual 197 159 Yes
 CWC §10608.24 (b)
Each urban retail water supplier shall meet its urban water use target by December 31, 2020.  CWC §10608.28
(a) An urban retail water supplier may meet its urban water use target within its retail service area, or through mutual agreement, by any of the following:
(1) Through an urban wholesale water supplier.
(2) Through a regional agency authorized to plan and implement water conservation, including, but not limited to, an agency established under the Bay Area Water Supply and Conservation Agency Act (Division 31 (commencing with Section 81300)).
(3) Through a regional water management group as defined in Section 10537. (4) By an integrated regional water management funding area. (5) By hydrologic region.
(6) Through other appropriate geographic scales for which computation methods have been developed by the department.
(b) A regional water management group, with the written consent of its member agencies, may undertake any or all planning, reporting, and implementation functions under this chapter for the member agencies that consent to those activities. Any data or reports shall provide information both for the regional water management group and separately for each consenting urban retail water supplier and urban wholesale water supplier.

Section 6 2025 Urban Water Management Plan
Water Supply Characterization City of Pleasanton
Public Draft | May 2026
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6 WATER SUPPLY CHARACTERIZATION

This section describes Pleasanton’s existing and projected water supply portfolio under normal water year conditions. The availability of the City’s water supplies under a single dry year and a drought lasting five years, as well as more frequent and severe periods of drought, are detailed in Section 7 of this UWMP.

The City’s water supply portfolio consists of:
• Zone 7 purchases – Pleasanton’s primary water source is treated potable supply purchased from Zone 7. As such, Zone 7’s water supplies, storage operations, and future supply projects are discussed.
• Groundwater – Pleasanton typically supplements its Zone 7 purchases with groundwater pumped from City-owned wells in the Livermore Valley Groundwater Basin (Basin). The City’s groundwater supply is limited by its groundwater pumping quota (GPQ), managed by Zone 7 as the local groundwater basin manager.
• Recycled water – The City augments its potable water supply with recycled water produced by DSRSD and Livermore.

This section also addresses the energy intensity used to operate the City’s water distribution systems and wastewater collection system.

6.1 Purchased Water

6.1.1 Water Supply Purchases from Zone 7
Zone 7 is the Pleasanton’s sole wholesale supplier for potable water. Under the existing agreement with Zone 7, the City is limited in developing other potable water supply sources. The treated water delivered by Zone 7 complies with the Requirements for Drinking Water of the California Department of Health Services and the U.S. Environmental Protection Agency (EPA), or their successor regulatory agencies.

6.1.2 Zone 7 Water Supply Sources
This section details Zone 7’s water sources and supply management. Zone 7’s water supply has two major components:
 CWC §10631(b) A plan shall be adopted in accordance with this chapter that shall do all of the following:

Identify and quantify, to the extent practicable, the existing and planned sources of water available to the supplier over the same five-year increments described in subdivision (a).  CWC §10631(h) A plan shall be adopted in accordance with this chapter and shall do all of the following:

An urban water supplier that relies upon a wholesale agency for a source of water shall provide the wholesale agency with water use projections from that agency for that source of water in five- year increments to 20 years or as far as data is available. The wholesale agency shall provide information to the urban water supplier for inclusion in the urban water supplier’s plan that identifies and quantifies, to the extent practicable, the existing and planned sources of water as required by subdivision (b), available from the wholesale agency to the urban water supplier over the same five- year increments, and during various water -year types in accordance with subdivision (f). An urban water supplier may rely upon water supply information provided by the wholes ale agency in fulfilling the plan informational requirements of subdivisions (b) and (f).

Section 6 2025 Urban Water Management Plan
Water Supply Characterization City of Pleasanton
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• Incoming water supplies – Including supplies available through contracts and water rights and typically consist of annually allocated imported surface water supply and local surface water runoff.
• Accumulated or “banked” water supplies – Including supplies derived from previous years that are held in local and non-local storage locations.

To optimize use of its local resources, Zone 7 practices conjunctive use of the Basin, as detailed in Section 6.2.3. Zone 7 also stores local runoff from the Arroyo Valle watershed in the local reservoir (Lake Del Valle), which is owned and operated by DWR as part of the SWP.

Groundwater banking provide s Zone 7 with additional flexibility in managing annual fluctuations in supplies. Zone 7 currently holds long-term water storage (“banking”) agreements with two agencies in Kern County: Semitropic Water Storage District and Cawelo Water District . Additionally, Zone 7 is in the process of obtaining a new water storage agreement with another agency.

To mitigate the risk associated with significant reliance on imported water supply, Zone 7 continues to develop local sources of water to diversify its water supply portfolio. Zone 7 periodically conducts Water Supply Evaluation (WSE) Updates to assess future water supply conditions in the Tri -Valley to support long-term water supply reliability. In May 2023, Zone 7 completed its 2022 WSE Update t o capture the latest assumptions for Zone 7’s system, supply, and demands . The 2022 WSE Update also evaluate d various potential future water supplies, discussed in Section 6.8.

6.1.2.1 Imported Water from the State Water Project
Zone 7’s primary source is imported water from the SWP, which is owned and operated by DWR . On an average annual basis, SWP supply accounts for about 90%8 of Zone 7’s portfolio (Zone 7, 2026).

SWP water supply originates in the Feather River watershed, where water is captured in Lake Oroville, released into the Feather River to flow through the Delta, then conveyed through the South Bay Aqueduct (SBA). From the SBA, the supply may be stored in Lake Del Valle (along with local runoff) or conveyed to Zone 7 and/or two other water agencies (Valley Water and Alameda County Water District [ACWD]). Much of the SWP water continues to flow to southern California via the California Aqueduct.

SWP water is used by Zone 7 to meet potable demands from municipal and industrial (M&I) customers and untreated water demands from agricultural customers. When possible , Zone 7 also uses SWP to artificially recharge the Basin (Section 6.2.3.3) and to fill non-local groundwater storage (i.e., groundwater banks in Kern County; Section 6.1.2.4).

The following sections describe Zone 7’s contract with DWR for SWP water and the types of water Zone 7 receives under this contract.

6.1.2.1.1 Contract with DWR
DWR provides water from the SWP to 29 water suppliers (State Water Contractors [SWC]) in exchange for contractor payment of all costs associated with providing that supply. DWR established substantially uniform long-term water supply contracts with each SWC in the 1960s, including Zone 7’s SWP contract initially executed in 1961. That contract has been subsequently amended 28 times and currently terminates on December 31, 2085. Details regarding Zone 7’s contract with DWR are provided in Zone 7’s 2025 UWMP.

8 This includes direct SWP deliveries, SWP carryover, and groundwater that originated from the SWP that was stored for later use.

Section 6 2025 Urban Water Management Plan
Water Supply Characterization City of Pleasanton
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6.1.2.1.2 Table A Allocation
Each SWC’s individual contract sets a maximum annual SWP supply limit , specified in Article 6(c) and Table A of the c ontract. T his supply limit is commonly referred to as “Table A.” Following the initial agreement in 1961, DWR amended Zone 7’s contract over the years and increased its Table A amount to 46,000 AFY in 1997. Since then, Zone 7’s Table A amount has increased to 80,619 AFY through a series of five permanent transfers from other SWCs, including:
• In December 1999, Zone 7 secured Table A SWP allocations from Lost Hills Water District of 15,000 AFY and Berrenda Mesa Water District of 7,000 AFY. • In December 2000, Zone 7 acquired 10,000 AFY of SWP allocation from Belridge Water Storage District.
• In October 2003, Zone 7 obtained an additional 2,219 AFY was obtained from Belridge Water Storage District.
• Finally, in 2003, Zone 7 acquired 400 AFY from the Tulare Lake Basin Water Storage District.

In practice, the SWP water available to Zone 7 under the Table A allocation process (presented as % of the Table A allocation) varies from year to year due to hydrologic conditions, water demands of other SWCs, existing SWP stored water, SWP facility capacity, and environmental/regulatory requirements. The Table A allocation is typically less than 100% of the Table A amount. SWP reliability is defined based on the long- term average Table A allocation.

DWR prepares a biennial SWP Delivery Capability Report (DCR) to assist SWC s and local planners in assessing the availability of supplies from the SWP. DWR issued its most recent update, the Draft 2025 DCR, in December 2025. In this update, DWR provided SWP supply estimates for SWC s to use in their planning efforts, including for use in their 2025 UWMPs. The Draft 2025 DCR includes DWR’s estimates of SWP water supply availability under both existing (2025) and future (2043) conditions.

DWR’s estimates of SWP deliveries are based on the CalSim 3 computer model that simulates monthly operations of the SWP and Central Valley Project (CVP) systems. Key inputs to the model include the relevant facilities included, hydrologic inflows, regulatory and operational constraints, and contractor demands for both CVP and SWP water. In conducting its model studies, DWR develops assumptions and/or scenarios for these key inputs.

In the Draft 2025 DCR, for existing conditions, DWR assumes: existing facilities, hydrologic inflows based on 100 years of historical data (1921 through 2021) adjusted to incorporate recent changes to climate; current regulatory and operational constraints including 2018 Coordinated Operation Agreement (COA) Amendment, 2024 Biological Opinions, and 2024 SWP Incidental Take Permit; and SWC demands at maximum Table A a mounts. The long- term average allocation reported in the Draft 2025 DCR for the existing conditions provides an appropriate estimate for current SWP water supply availability.

To evaluate SWP supply availability under future conditions, the Draft 2025 DCR includes three scenarios for climate change conditions in 2043 that represent different risk-informed levels of concern surrounding how climate change uncertainty will impact rising temperatures, shifting precipitation patterns, reduced snowpack, sea level rise, and other factors impacting future SWP water availability. The three risk - informed climate scenarios (50%, 75%, and 95% level of concern) are defined based on projected climate- informed system performance levels of April -to-July unimpaired runoff (Eight River Index) in the Delta watershed for 2028-2057. The 50% level of concern represents a middle-of-the-road or central tendency future, while the 75% level of concern scenario represents a worse than average future, and the 95% level of concern represents much worse. A 95% level of concern scenario depicts a future condition with lower SWP reliability than what results from 95% of model-informed climate outcomes.

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From 2020 to 2025, Table A allocations ranged from 5% to 100%, resulting in substantial annual variability in Zone 7’s SWP supply. DWR has projected decreasing reliability of Table A supplies. In the Draft 2025 DCR, DWR projects long-term average Table A allocations to decrease from 54% under existing conditions to 48% under future conditions in 2043 for the 50% level of concern scenario. Since the future conditions scenario incorporates impacts from climate change and sea level rise , it is more conservativ e than the existing conditions scenario.

Zone 7’s 2025 UWMP assumes SWP supp ly availability f or 2030 through 2050 considering Table A allocations under the 50% level of concern in the Draft 2025 DCR. This enables Zone 7 to consider the impacts of future climate change throughout the planning horizon. Zone 7 plans to further assess water supply reliability using the 75% and 95% level of concern in future studies to examine various scenarios.

As a SWC, Zone 7 has the option to store unused Table A water from one year to the next in the SWP’s San Luis Reservoir when storage capacity is available. This “carryover” water is also called Article 12e or 56c water, in reference to the relevant contract terms. While Article 12e water must be taken by March 31 of the following year, Article 56c water may remain as carryover if San Luis Reservoir storage is available. Zone 7’s UWMP analysis assumes an average of 10,000 AFY of carryover.

Article 21 Water (Interruptible or Surplus Water)
Article 21 of the SWP contract allows SWCs to take deliveries above the approved and scheduled Table A amounts for the current year when surplus SWP water is available. Article 21 water is only available for delivery on a short -term basis as determined by DWR when water is still available after operational requirements for SWP water deliveries, water quality, and Delta requirements are met . Article 21 deliveries cannot be stored in the SWP system.

This water becomes available during short periods in the wet season when storms bring excess water that DWR cannot store in San Luis Reservoir. When Article 21 water becomes available, SWC s can request delivery, and the available water is distributed generally in proportion to the Table A contract amounts of SWCs requesting delivery. Delivery of Article 21 water requires the ability to store the water in a non-SWP facility during very wet conditions and/or the ability to use the water directly without impacting scheduled Table A deliveries to Zone 7 (i.e., Article 21 delivery cannot be used to substitute scheduled Table A deliveries).

As described in the Draft 2025 DCR, Article 21 water deliveries are highly variable year- to-year, and also by month. Historically, these conditions have been difficult to meet for Zone 7 and have resulted in infrequent and low yields. On average, Article 21 water is available for Zone 7 about once every six years.

Zone 7 last received Article 21 water in 2023, when it took 2,360 AF. Having access to additional storage in the future would increase Zone 7’s access to Article 21 water.

6.1.2.1.3 Yuba Accord
In 2008, Zone 7 executed a contract with DWR to purchase additional water under the Lower Yuba River Accord (Yuba Accord). The original contract expired in 2025, and several amendments have been executed over the years, including a recent 2026 extension through 2056.

Four different types (“Components”) of Yuba Accord water are made available as a water purchase or transfer. Zone 7 has the option to purchase Components 1, 2, and 3 water during drought conditions and Component 4 water when the Yuba County Water Agency has determined that it has water supply available to sell.

Water is primarily available during dry years under the Yuba Accord, and the amount is highly variable.

Zone 7 has purchased Yuba Accord water in 12 of the last 18 years, purchasing as little as 41 AF in 2025 and as much as 3,159 AF in 2013. For planning purposes, Zone 7 currently does not assume any water

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supply yield specifically from the Yuba Accord, although supply considered under “water transfers” could potentially include those from the Yuba Accord.

6.1.2.2 Local Surface Water Runoff
Along with ACWD, Zone 7 has a water right (Permit 11319 [Application 17002]) to divert flows from Arroyo Valle. Lake Del Valle, which is a SWP facility owned and operated by DWR, stores runoff from the Arroyo Valle watershed and imported surface water deliveries from the SWP . The lake also supports recreation and flood management. In late fall, DWR typically lowers the lake level in anticipation of runoff from winter storm events. Water supply in Lake Del Valle is made available to Zone 7 via the SBA through operating agreements with DWR. A fter accounting for permit conditions, i nflows to Lake Del Valle are equally divided between Zone 7 and ACWD under their respective permits.

While Zone 7’s historical average annual yield from Arroyo Valle ranges from 3,000-7,000 AFY, the most recent 10-year average (2016-2025) is 4,000 AFY. In the future, c onstruction of the Chain of Lakes Conveyance System (discussed in Section 6.8) will allow for capturing more flow from Lake Del Valle storm releases and increase Zone 7’s yield. Modeling conducted to support Zone 7’s 2025 UWMP assumes an expected availability of 4,000 AF Y in a normal year or at the beginning of a drought. Zone 7 plans to re - evaluate this assumption as more climate change downscaled information is developed and the Chain of Lakes (COLs) project progresses.

6.1.2.3 Local Storage
Zone 7 has two existing local storage options , Lake Del Valle (surface storage) and the Main Basin (groundwater aquifer), and stores SWP deliveries in both. Lake Del Valle also stores runoff from the Arroyo Valle watershed. Zone 7 can store up to about 7,500 AF of its share of Arroyo Valle runoff in the lake (Zone 7, 2022) and carry-over runoff collected from one year until the end of the following year. Zone 7 relies on the operational storage capacity of 126,000 AF in the Main Basin for conjunctive management and recharges the basin with SWP water (Section 6.2).

6.1.2.4 Non-Local Storage
In addition to local storage, Zone 7 currently participates in two non -local (out-of-basin) water banking programs, both in Kern County, and may enter into additional water banking agreements in the future.

When Zone 7 has excess SWP available in wet years, the banking programs hold a portion of Zone 7’s allocated SWP supplies for Zone 7 to access during drought years through an exchange. Like other storage options, these groundwater banks significantly enhance system reliability, and yet, they do not provide a net contribution to Zone 7’s water supply over the long term. In fact, out-of-basin water banks result in some operational losses (“leave behind”). Also, certain conditions must exist to realize the benefit of these banks. That is, for Zone 7 to receiv e banked water supply , the Banks Pumping Plant (the major SWP pumping facility in the Delta) and the SBA must be operational. Low SWP Table A allocations (and generally low levels of outflow from the Delta) can limit the delivery of these banked supplies via exchange.

Point of Delivery Agreements with DWR and Kern County Water Agency ( a fellow SWC) allow Zone 7 to store SWP water in Semitropic Water Storage District (Semitropic) and Cawelo Water District (Cawelo).

Semitropic and Cawelo are member units of Kern County Water Agency, which manages water deliveries to these agencies. In November 2020, the Zone 7 Board of Directors (Zone 7 Board) authorized amendments to the Point of Delivery Agreements to extend water delivery terms for storage in Semitropic and Cawelo through 2030 and recovery of banked water through 2035.

Figure 6-1 shows Zone 7’s total storage and annual deposits and withdrawals from the two Kern County banks over time. The use of these banks successfully augmented Zone 7’s water supplies in 2021 and 2022 during the recent drought.

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Figure 6-1 Zone 7’s Kern County Groundwater Banks: Annual Storage, Deposits, and Withdrawals

6.1.2.4.1 Semitropic Water Storage District
Zone 7 initially established the water banking contract Semitropic in 1998 . Water put into Semitropic is subject to a 10 % leave behind. Under the current contract, Zone 7 has access to an operational storage capacity of 78,000 AF with an annual deposit limit of up to 5,883 AFY. In addition, Zone 7 can request up to 9,100 AFY of pumpback (i.e., water pumped out of Semitropic and delivered to the SWP system) and up to 8,645 AF Y of SWP exchange water (i.e., water transferred between Zone 7 and Semitropic by adjusting the amounts of Table A water delivered to Zone 7 and Semitropic; the availability of this type of water depends on the SWP allocation) . In certain years when SWP Table A allocation is above a certain percentage, Zone 7’s pumpback can be increased to 12,241 AFY.

Between 2021 and 2025, Zone 7 stored approximately 13,500 AF ( after losses ) and withdrew approximately 20,100 AF from the Semitropic bank. As of January 1, 2026, Zone 7 had 79,570 AF stored in the Semitropic bank.

6.1.2.4.2 Cawelo Water District
Zone 7 established the water banking contract with Cawelo in 2006 . Water put into Cawelo is subject to a 50% leave behind. Under the contract, Zone 7 has access to an operational storage capacity of 120,000 AF with an annual deposit limit up to 10,000 AFY. Thus, when Zone 7 deposits 10,000 AF to Cawelo in one year, the leave behind for Cawelo is 5,000 AF, and the amount Zone 7 can later access is 5,000 AF. Zone 7 can request up to 10,000 AFY of pumpback (or SWP exchange water) from Cawelo.

Between 2021 and 2025, Zone 7 stored approximately 5,000 AF after losses and withdrew approximately 8,000 AF from the Cawelo Water Bank. As of January 1, 2026, Zone 7 had 26,900 AF stored in the Cawelo bank.

6.1.2.4.3 San Luis Reservoir
In addition to the non -local groundwater banking programs described above , Zone 7 can store unused Table A water in San Luis Reservoir from one year to the next (Article 56 or carryover) as long as storage

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in San Luis Reservoir is available. Zone 7 can lose water stored in San Luis Reservoir if the reservoir “spills” (i.e., DWR needs the storage capacity to store its SWP water) during a wet year. Zone 7 typically targets storing approximately 10 ,000 AFY of its Table A allocation as carryover in San Luis Reservoir. DWR is considering expanding the San Luis Reservoir by 130,000 AF, as further discussed in Zone 7’s 2025 UWMP.

6.2 Groundwater

This section describes the City’s groundwater supply and Zone 7’s management of the Basin as the exclusive Groundwater Sustainability Agency (GSA) within its jurisdictional boundarie s ( Figure 6-2) as identified under the 2014 Sustainable Groundwater Management Act (SGMA).

Zone 7’s management of the Basin began over 50 years ago, long preceding the State’s implementation of SGMA. 9 Each year, Zone 7 prepares an Annual Report which provides updates on groundwater conditions in the basin and the status of Zone 7’s groundwater management actions (Zone 7, 2026). The 2025 Water Year Annual Report can be found on the Zone 7’s website.10

6.2.1 Basin Description and Status
Pleasanton relies on groundwater from the Livermore Valley Groundwater Basin (Basin; DWR No. 2 -10).

The City’s local groundwater supply is within the Main Basin, which is the portion of the Basin that contains high-yielding aquifers and generally produces the best-quality groundwater.

9 Zone 7, 2021. Alternative Groundwater Sustainability Plan for the Livermore Valley Groundwater Basin, dated December 2021. Accessed From: https://sgma.water.ca.gov/portal/alternative/periodiceval/preview/8. 10 https://www.zone7waterca.gov/sites/main/files/file-attachments/2-010_wy_2025.pdf?1774635392  CWC §10631
(b) Identify and quantify, to the extent practicable, the existing and planned sources of water available to the supplier over the same five -year increments described in subdivision (a), providing supporting and related information, including all of the following:
(4) If groundwater is identified as an existing or planned source of water available to the supplier, all of the following information:
(A) The current version of any groundwater sustainability plan or alternative adopted pursuant to Part 2.74 (commencing with Section 10720), any groundwater management plan adopted by the urban water supplier, including plans adopted pursuant to Part 2.75 (commencing with Section 10750), or any other specific authorization for groundwater management for basins underlying the urban water supplier’s service area. (B) A description of any groundwater basin or basins from which the urban water supplier pumps groundwater.

For basins that a court or the board has adjudicated the rights to pump groundwater, a copy of the order or decree adopted by the court or the board and a description of the amount of groundwater the urban water supplier has the legal right to pump under the order or decree. For a basin that has not been adjudicated, information as to whether the department has identified the basin as a high- or medium-priority basin in the most current official departmental bulletin that characterizes the condition of the groundwater basin, and a detailed description of the efforts being undertaken by the urban water supplier to coordinate with groundwater sustainability agencies or groundwater management agencies listed in subdivision (c) of Section 10723 to maintain or achieve sustainable groundwater conditions in accordance with a groundwater sustainability plan or alternative adopted pursuant to Part 2.74 (commencing with Section 10720). (C) A detailed description and analysis of the location, amount, and sufficiency of groundwater pumped by the urban water supplier for the past five years. The description and analysis shall be based on information that is reasonably available, including, but not limited to, historic use records.

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The Basin is not adjudicated. In its evaluation of California groundwater basins, DWR determined that the Basin is not in a condition of critical overdraft.11Rather, the Basin is designated as a medium priority basin under DWR’s 2019 Phase 2 Basin Prioritization,11 which scores basins on eight components and ranks their priority based on the scores. If a basin is assigned more than 14 but less than 21 total points, it is defined as “medium priority.” In the case of the Basin, a total of 16 points were assigned, resulting in a designation as “medium priority.” The main factors driving the Basin’s designation include total population (3 out of 5 possible points), population growth (3 out of 5 possible points), numbers of public supply wells (3 out of 5 possible points), and total numbers of wells (3 out of 5 possible points).

The Basin covers an area of approximately 69,600 acres (109 square miles) and is located about 40 miles east of San Francisco and 30 miles southwest of Stockton within a structural trough of the Diablo Range.

The Basin extends from the Pleasanton Ridge eas t to the Altamont Hills (about 14 miles) and from the Livermore Upland north to the Orinda Upland (about 13 miles). Surface drainage features include Arroyo Valle, Arroyo Mocho, and Arroyo las Positas as principal streams, with Alamo Creek, South San Ramon Creek, and Tassajara Creek as minor streams. Elevations within the Basin range from about 600 feet above mean sea level (ft msl) in the east, near the Altamont Hills, to about 280 ft msl in the southwest, where Arroyo de la Laguna flows into the Sunol Basin.

DWR's Groundwater Bulletin 118 and key documents described below provide additional details provided related to groundwater management in the Basin :
• The updated Livermore Valley Basin Alternative Groundwater Sustainability Plan (“Alternative GSP”), which includes current groundwater conditions, a hydrogeologic conceptual model, a water budget, local sustainable management criteria, and projects and management actions for maintaining sustainability in the Basin, available on the DWR’s SGMA Portal website here:
https://sgma.water.ca.gov/portal/alternative/periodiceval/preview/8 • The Annual Report for the Sustainable Groundwater Management Program, 2025 Water Year, Livermore Valley Groundwater Basin, available on the Zone 7 website https://www.zone7waterca.gov/sustainable-groundwater-management-and-sgma • The Bay Area Integrated Regional Water Management Plan (IRWMP), including detailed descriptions of local and regional hydrogeology, groundwater conditions, and groundwater monitoring practices, available on the Bay Area IRWMP website:
http://bayareairwmp.org/irwm-plans/

11 DWR, 2019. Sustainable Groundwater Management Act 2018 Basin Prioritization, State of California, dated January 2019.

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Figure 6-2 Groundwater Basins within Zone 7’s Service Area

6.2.2 Pre-SGMA Groundwater Management
Before SGMA took effect, Zone 7 managed the Basin under its 2005 Groundwater Management Plan (GMP), which was developed to comply with the requirements set forth in the California Groundwater Management Planning Act (Water Code Section 10750, et seq.). The GMP established a formal framework for monitoring, protecting, and managing groundwater resources within the Basin . As part of the GMP, Zone 7 incorporated a Salt and Nutrient Management Plan to address long -term groundwater quality protection. In addition to monitoring and planning efforts, Zone 7 actively managed the Basin through conjunctive use operations, including artificial recharge using imported and local surface water supplies.

6.2.3 Groundwater Management Under SGMA
In 2014, the California State Legislature enacted SGMA with subsequent amendments in 2015. SGMA requires the formation of GSAs and the development and implementation of GSPs or Alternative GSPs for groundwater basins that are designated by DWR as medium or high priority. As discussed above, the Basin is medium priority and therefore subject to the requirements of SGMA.

Zone 7 is the exclusive GSA for the Basin. Under SGMA, Zone 7 submitted an Alternative GSP to DWR in December 2016. The Alternative GSP documented Zone 7’s longstanding conjunctive use program, monitoring network, groundwater conditions , pumping management policies, and water quality protection efforts, all of which collectively demonstrate sustainable basin management. DWR approved the Alternative GSP on July 17, 2019.

Zone 7 submitted its first Five-Year Periodic Evaluation of the Alternative GSP (2021 Alt-GSP) in December 2021 to reflect updated Basin conditions, monitoring data, and refinements to sustainability criteria and

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management actions. The update included revised minimum thresholds and measurable objectives where appropriate, updated water budget analyses, enhanced evaluation of interconnected surface water conditions, and documentation of ongoing management measures such as the GPQ, artificial recharge operations, and monitoring programs. DWR approved the first Periodic Evaluation of the Alternative GSP in June 2024, confirming that Zone 7 continues to meet SGMA requirements and is managing the Basin sustainably.

Under SGMA, Zone 7 is also responsible for annual reporting and Five -Year Periodic Evaluations to demonstrate continued progress toward sustainability. Zone 7’s latest Annual Report was developed for Water Year 2025. The second Five-Year Periodic Evaluation of the Alternative GSP is being prepared and is due to DWR by December 21, 2026.

6.2.3.1 Sustainable Yield and Allocation across Main Basin Groundwater Users Zone 7 continues to operate the Basin within its Sustainable Yield over a long-term period (10 years) and manage groundwater resources to prevent significant chronic lowering of groundwater levels and reduction of groundwater storage. Zone 7 determined historic lows by measuring groundwater elevations in multiple Main Basin wells and identifying the minimum observed level. Zone 7 also defines operational storage as the difference in surface water elevation between a full Main Basin and its historic low. The total storage capacity of the Basin is about 254,000 AF, of which about 126 ,000 AF is managed as operational storage ( Zone 7, 2026). Moreover, pumping is managed to keep groundwater within the operational storage band and above emergency reserved levels.

Using over a century of hydrologic records and projected future recharge conditions , t he long-term natural sustainable yield of the Main Basin was determined to be 13,400 AFY, which is about 11% of the operational storage. Table 6-1 summarizes how this sustainable yield is allocated among non -Zone 7 groundwater users.

Table 6-1 Natural Sustainable Yield Demand Components
Demand Component of the
Sustainable Yield Sustainable Average (AFY)
Pleasanton 3,500
Cal Water 3,069
DSRSD 645
Other Groundwater Pumping 1,186
Agricultural Pumping 400
Mining Area Losses 4,600
Total 13,400

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Each Zone 7 retailer has an established GPQ12 that matches the sustainable yield averages shown in Table 6-1. Sustainable averages are maintained by allowance of “carryover”, which is limited to 20% of the GPQ (i.e., 700 AFY for the City), when less than the GPQ is used in a year. A retailer must pay a “recharge fee” for pumping groundwater more than its GPQ and any carryover. The fee covers the cost of importing and recharging additional water into the Main Basin. This practice helps avoid repeating historical trends in over-drafting the Basin.

Historically, Pleasanton pumped its own GPQ; however, the City stopped operating its production wells in 2022 due to PFAS in the groundwater supply. Pleasanton is working with Zone 7 to construct and begin operation of new wells outside of the known PFAS contamination plume. The new wells a re expected to come online before 2030 and will allow Pleasanton continue pumping its full GPQ.

In terms of the other Zone 7 retailers: Cal Water pumps its own GPQ; Zone 7 pumps DSRSD’s GPQ; and Livermore has not utilized its GPQ for many years. The balance of the natural sustainable yield is pumped for other municipal, agricultural, and gravel mining uses.

6.2.3.2 Zone 7’s Groundwater Pumping and Monitoring Strategy Zone 7's groundwater production for its treated water system does not use the natural sustainable yield from the Main Basin; instead, Zone 7 pumps only water that has been recharged as part of its artificial recharge program using its available surface water supplies. During high-demand periods, groundwater is used to supplement surface water supply delivered via the SBA. Groundwater is also used when the SBA is out of service due to maintenance and improvements or when Zone 7’s surface water treatment plants (WTP) are operating under reduced capacity due to construction, repairs, etc. Finally, Zone 7 taps into its stored groundwater under emergency or drought conditions, when there may be insufficient surface water supply available. Zone 7 also pumps groundwater out of the Main Basin during normal water years to help reduce the salt loading in the Main Basin in accordance with the Salt Management Plan.

6.2.3.3 Artificial Recharge and Groundwater Extraction by Zone 7 Before the construction of the SWP in the early 1960s, groundwater was the sole water source for the Livermore-Amador Valley. This resource has gone through several periods of extended withdrawal and subsequent recovery. The Main Basin was over drafted in the early 1960s when approximately 110,000 AF of groundwater was extracted. The Main Basin was allowed to recover from 1962 to 1983. It was during this era that Zone 7 first conducted a program of groundwater replenishment by recharging imported surface water via its streams or arroyos (“in -stream recharge” or “artificial recharge”) for storage in the Main Basin, supplying treated surface water to customers to augment groundwater supplies, and regulating municipal pumping by other users.

Zone 7 actively manages the Basin under a conjunctive use strategy designed to balance natural recharge, artificial recharge, and groundwater extraction. Zone 7's operational policy is to maintain the balance between the combination of natural and artificial recharge and withdrawal or pumping to maintain groundwater levels above the emergency reserve storage, thereby preserving a reliable drought buffer.

Artificial recharge operations provide the ability to store surplus imported and local surface water during wet periods for later recovery during dry conditions, enhancing overall supply reliability. This conjunctive use framework allows Zone 7 to adaptive ly shift between surface water and groundwater sources depending on hydrologic conditions, operational needs, and regulatory constraints. Figure 6-3 shows Zone 7’s artificial recharge and pumping from 1974 through 2025.

12 The Groundwater Pumping Quota was formerly referred to as the “Independent Quota” in the original Municipal and Industrial Water Supply Contract between Zone 7 and each retailer.

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Figure 6-3 Artificial Recharge, Pumping, and Net Cumulative Impacts to Operational Storage Over the past five years, Zone 7 has generally been able to meet groundwater production needs while maintaining basin storage within sustainable ranges. Although recent drought conditions resulted in temporary localized groundwater level declines that affected production at certain wells, these impacts were managed within the broader conjunctive use system which allowed groundwater levels to subsequently recover and did not compromise overall supply reliability . Zone 7 was able to meet its demand in all prior years.

Zone 7 has continued to operate the Basin within its Sustainable Yield over a period of at least 10 years and is meeting the sustainability goal defined for the Basin. Groundwater levels have remained stable or generally increased over the past 10 years, demonstrating continued sustainable groundwater management practices. Groundwater storage in the Basin from 1974 to 2025 is shown in Figure 6-4.

Ongoing basin monitoring and implementation of the Alternative GSP ensure that groundwater extraction remains sustainable and protective of long-term basin health.

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Figure 6-4 Main Basin Groundwater Storage
Zone 7 is continuing to study the Basin and develop new tools (including an improved groundwater model completed in 2025 and a Decision Support Tool completed in 2026) to better understand the levels of groundwater extraction possible under various conditions and contributing factors, such as groundwater connectivity, spatial distribution in the Main Basin, and others. These efforts strengthen Zone 7’s ability to sustainably manage the Basin and maintain a resilient long-term water supply portfolio. Section 7.1.2 presents additional information related to groundwater supply reliability.

6.2.3.4 Groundwater Quality Monitoring and Protection
Zone 7 chloraminates groundwater supply to match the disinfectant residual in the transmission system.

In terms of groundwater supply, s everal constituents of concern have been identified throughout the Basin. Zone 7 is actively implementing both monitoring and management programs to protect water quality in the Basin and ensure that Zone 7 continue s to provid e safe and reliable drinking water, as discussed in the following subsections and in Section 7.1.2.

6.2.3.4.1 Salinity and Nutrient Management
Zone 7 is actively implementing its Salt and Nutrient Management Plan (SNMP). Basin salt levels are being addressed primarily through groundwater pumping and demineralization using the Mocho Groundwater Demineralization Plant (MGDP) in the Mocho Wellfield. Simultaneously, the Basin is being recharged with water containing low salt concentrations. The facility allows for the e xport of concentrated minerals or salts from the Main Basin while improving the water quality of treated water. The MGDP is expected t o be offline from 2026 to 2028 while a new PFAS treatment facility is constructed at the Mocho W ellfield.

Zone 7 will continue its Basin management under the SNMP while the facility is down.

6.2.3.4.2 PFAS Management
In November 2022, Pleasanton ceased production in all three of its active municipal wells due to PFAS detections. Following the shutdown, in 2023, Pleasanton and Zone 7 agreed to collaborate on the Joint Groundwater Wells project. The project involves the design and installation (i.e., drilling and equipping) of new municipal production wells within the Bernal Subbasin, which is believed to be outside the existing PFAS plume based on Zone 7 testing and groundwater modeling.

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The Joint Groundwater Wells project will give the City the ability to access its full GPQ. The Project is envisioned to include the following elements:
• Construction of new groundwater well(s) in the Bernal Subbasin with the goal to increase Zone 7’s groundwater production capacity and drought resiliency for the overall Tri-Valley region, recover the City’s GPQ, and produce water supply that meets and exceeds all state and federal water quality standards.
• Connection of the new groundwater well(s) to Zone 7’s water supply system and expansion of treatment capacity at Zone 7’s existing Zone 7 Hopyard Treatment Facility. • Delivery of the City’s GPQ via the Zone 7 water supply system (rather than the existing configuration that involves direct delivery from dedicated City wells).

Zone 7 will serve as the lead agency in the evaluation, permitting, design, construction, operation, and maintenance of the project. Pleasanton will support the project by providing necessary land rights and paying the City’s share of project costs.

The project is phased, as follows:
• Phase 1 – In December 2025, the City and Zone 7 completed Phase 1 of the project, which involved assessing the feasibility of jointly constructing and operating new wells in the Bernal Subbasin. Phase 1 also involved drilling three test wells to confirm groundwater quality, well capacity, and aquifer sustainability. The study found that a joint groundwater supply project in the Bernal Subbasin is technically feasible, groundwater wells at Tennis Park and Hansen Park would provide sufficient water yield and quality, and Zone 7 groundwater modeling indicated the project would not affect groundwater basin sustainability

13. The feasibility study will set the
basis for future phases of work including full scale design and construction of the production wells and associated infrastructure and construction.
• Phase 2 – Following the feasibility study and test wells, the project will move into design and construction of the new production wells. The target completion date is end of 2029. • Phase 3 – Once the wells are installed and equipped and required permits to operate are in place, the City and Zone 7 will begin operating and maintaining the wells

14. Pleasanton expects
the new production wells to be operational by 2030, and therefore in this UWMP, the City is projected to utilize its full GPQ (an average of 3,500 AFY) starting in 2030.

Zone 7 is managing the Tri-Valley’s broader efforts in the Basin related to PFAS. Seven of Zone 7’s nine active municipal wells have detected elevated PFAS concentrations. To date, PFAS has not been detected in Zone 7’s Hopyard Wellfield (i.e., Hop 6 and Hop 9 wells) located in the Bernal Subbasin (western portion of the Main Basin).

Zone 7 has developed a PFAS management strategy consisting of expanding and refining its PFAS monitoring network, blending and treating groundwater to manage water quality, and diversifying groundwater resources. In recent years, Zone 7 has implemented the following management activities 15:

13 For more information see the project description on Zone 7’s website: https://www.zone7waterca.gov/post/joint- groundwater-wells-study
14 More information can be found on Zone 7’s website under the Joint Groundwater Wells Project (https://www.cityofpleasantonca.gov/our-government/pleasanton-water/joint-groundwater-wells-project/) 15 Zone 7 Water Agency, 2026. Annual Report for the Sustainable Groundwater Management Program, 2025 Water Year (October 2024-2025), Livermore Valley Groundwater Basin. https://www.zone7waterca.gov/sustainable-groundwater- management-and-sgma

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• Installed new PFAS treatment systems at Stoneridge Well and COLs Wellfield and began operations in 2023 and 2025, respectively.
• Installed a new monitoring well in 2024 between the Mocho and Hopyard Wellfields to monitor PFAS plume migration towards the Hopyard wells.
• Actively blending water pumped from the Mocho Wellfield to meet regulatory limits. • Initiated design and construction of a PFAS treatment system in the Mocho Wellfield which is anticipated to come online in 2028.

6.2.3.4.3 Chromium Management
Zone 7 has several wells with naturally occurring hexavalent chromium (Cr(VI)) concentrations near the maximum contaminant level (MCL). In response, Zone 7 is actively managing flows from the affected wells.

For example, Cr(VI) levels at the Stoneridge well are being managed through system blending and/or blending with other wells.

6.2.4 Historical Pumping and Supply Sufficiency
As described in Section 6.2.3.1, the City has a GPQ of 3,500 AFY in the Main Basin. Historical groundwater pumping from 2021 through 2025 is shown in Table 6-2. Pleasanton decommissioned its municipal wells in 2022, in response to PFAS detections. This reduced the total pumped volume in 2022 , and by 2023 , Pleasanton was sourcing nearly 100% of its supply from Zone 7 purchases. The City occasionally pumped groundwater between 2023–2025 to meet peak demands and to conduct regular monitoring and testing.

Table 6-2 Groundwater Volume Pumped (DWR Table 6-1)
Groundwater
Type Water Type Location or
Basin Name
2021
(AF)
2022
(AF)
2023
(AF)
2024
(AF)
2025
(AF)
Alluvial Basin Potable Livermore
Valley
Groundwater
Basin
3,332 2,449 10 4 3
Total 3,332 2,449 10 4 3

6.3 Surface Water
As described in Section 6.1.2, Pleasanton receives treated surface water from Zone 7, whose supplies include imported surface water from the SWP, and local surface water captured in the Del Valle Reservoir.

6.4 Stormwater
Stormwater can be beneficially reused as a water supply source to meet local water supply demands.

Beneficial reuses include blending with other water supplies for groundwater recharge, redirecting it into constructed wetlands or landscaping, and diverting it to a treatment facility for subsequent reuse.

Currently, Pleasanton does not implement any stormwater recovery systems.

6.5 Wastewater and Recycled Water

 CWC §10633
The plan shall provide, to the extent available, information on recycled water and its potential for use as a water source in the service area of the urban water supplier. The preparation of the plan shall be coordinated with local water, wastewater, groundwater, and planning agencies that operate within the supplier’s service area.

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Pleasanton collects all the wastewater from its service area. Most of the city’s sewage flow is conveyed to DSRSD’s RWTF; however, wastewater generated from the Ruby Hills housing development is conveyed to Livermore’s Water Reclamation Plant (LWRP) for treatment. Both facilities produce Title 22 tertiary disinfected recycled water, which Pleasanton then distributes to customers for non-potable uses to offset potable demands. The sections below describe the collection, treatment and discharge of wastewater as well as the coordination and use of recycled water within Pleasanton’s service area.

6.5.1 Recycled Water Coordination
In the early 1990s, DSRSD, Livermore, and Zone 7 undertook a Tri-Valley recycled water study and conducted a series of public workshops. As a result of that effort, the SWRCB issued a Master Water Recycling Permit (Order No. 93159) to the three agencies in December 1993. The permit established the requirements for recycled water irrigation, groundwater recharge, and other Title 22 approved projects.

DSRSD is responsible for treating and discharging treated wastewater for the cities of Dublin, South San Ramon, and Pleasanton. In addition, DSRSD owns and operates a water recycling plant at the RWTF and participates in DERWA, a joint powers authority between DSRSD and EBMUD that operates the SRVRWP.

The SRVRWP provides recycled water that meets Title 22 disinfected tertiary recycled water requirements.

The recycled water primarily serves landscape irrigation customers of DSRSD and EBMUD in the cities of San Ramon and Dublin (including Dougherty Valley) and the towns Danville and Blackhawk in Alameda and Contra Costa counties. Pleasanton began using recycled water from DERWA facilities in 2014 and plans to continue connecting remaining parcels along the distribution system.

Wastewater produced from Pleasanton’s Ruby Hills housing development is sent to the LWRP. The City receives recycled water from Livermore for landscape irrigation servicing new development in the eastern portion of the City, referred to as the Staples Ranch region, which terminates at El Charro Road.

These two recycled water sources are described below.

6.5.1.1 DSRSD-EBMUD Recycled Water Authority
Currently, wastewater from Dublin, Pleasanton, and the southern portion of San Ramon are treated at DSRSD’s RWTF. A portion of the secondary effluent is routed to DSRSD’s water recycling plant for tertiary treatment and distribution through DERWA facilities. DSRSD coordinates with the planning depart ments in the cities of Dublin and San Ramon, Alameda and Contra Costa counties, and the U.S. Army Reserve to ensure that recycled water is used where it is available. DSRSD and EBMUD work together to manage recycled water supply demands.

Pleasanton and DSRSD each own 8.5 million gallons per day (MGD) of secondary treatment capacity at the DSRSD RWTF. Pleasanton maintains the first right to use the secondary effluent produced from wastewater originating from Pleasanton’s wastewater collection system for recycling. DSRSD maintains the first right to use secondary effluent produced from the DSRSD collection system for recycling.

According to the 2003 DERWA Water Sales Agreement, all recycled water produced by DSRSD is delivered to DERWA for subsequent wheeling to the EBMUD and DSRSD water service areas. DSRSD’s tertiary treatment capacity is 16.2 MGD. Recycled water is delivered by DERWA on a first come first serve basis.

In 2019, DERWA determined that the SRVRWP cannot meet the combined peak demands of its member agencies (DSRSD and EBMUD) and Pleasanton (a retailer to DERWA). Thus, DERWA passed Resolution No. 19-3 (Appendix E) establishing a moratorium on new recycled water connections and requesting that its members and the City take action to reduce recycled water demands.

DSRSD monitors recycled water uses and files reports with DDW and the San Francisco Bay Regional Water Quality Control Board (RWQCB), in conformance with DSRSD’s General Water Reuse Order No. WQ 2016- 0068-DDW (General Order 2016).

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The DERWA recycled water system has three components owned by three different agencies:
• DERWA owns the Pump Stations R1 (at the RWTF), R200B, and R200A, as well as Reservoirs R100 and R200.
• EBMUD owns and operates the recycled water distribution pipeline system contained within its service area and will have two pump stations and a reservoir (future facilities). • DSRSD owns and operates the recycled water treatment facilities at its wastewater treatment plant that treat wastewater from Dublin, South San Ramon and Pleasanton, and the recycled water distribution pipeline system within its service area, along with three pump stations, R300A, R300B, and R20, and two reservoirs, R20 and R300.

Pleasanton connects to the DERWA system near the corner of the DSRSD Dedicated Land Disposal site, adjacent to Stoneridge Drive near the DSRSD RWTF.

6.5.1.2 Livermore Water Reclamation Plant
The LWRP can produce up to 6.0 MGD, or approximately 18 AF per day of recycled water. The LWRP produces approximately 2,460 AFY of recycled water. Of that, Livermore uses about 2,200 AFY within its municipal water service area, and Pleasanton uses the remainder.

6.5.2 Wastewater Collection, Treatment, and Disposal

Pleasanton owns and operates the community’s wastewater collection system, which serves around 21,000 residential and CII customers. The sewer system consists of approximately 253 miles of gravity sewers, approximately 4.9 miles of force mains, 8 siphons, and 11 active pump stations. The average dry weather flow (ADWF) is approximately 6 MGD (Pleasanton, 2025). Pleasanton sends the majority of its sewer flows to DSRSD’s RWTF for treatment, while it sends the sewer flows from the Ruby Hill area to the LWRP for t reatment. When not re -used, t reated wastewater effluent from both facilities is conveyed through the Livermore Amador Valley Water Management Agency (LAVWMA) pipeline by the East Bay Dischargers Authority (EBDA) and discharged to the San Francisco Bay.

6.5.2.1 DSRSD’s Regional Wastewater Treatment Facility
DSRSD owns and operates the RWTF, which treats wastewater from Pleasanton , Dublin, and south San Ramon DSRSD by contract. The RWTF includes facilities for conventional secondary treatment, disinfected tertiary recycled water, and advanced water treatment. Conventional secondary wastewater treatment facilities include primary sedimentation, activated sludge secondary treatment, secondary sedimentation, chlorine disinfection, and effluent pumping. The secondary treatment faciliti es currently have an ADWF capacity of 17.0 MGD. At projected buildout, the ADWF capacity of secondary treatment facilities is anticipated to be 20.7 MGD with 10.4 MGD originating from DSRSD’s own service area and the remaining

10.3 MGD attributed to flows from the City.
 CWC §10633 (a)
A description of the wastewater collection and treatment systems in the supplier’s service area, including a quantification of the amount of wastewater collected and treated and the methods of wastewater disposal.  CWC §10633 (b)
A description of the quantity of treated wastewater that meets recycled water standards, is being discharged, and is otherwise available for use in a recycled water project.

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DSRSD’s RWTF further treats a portion of the secondary effluent to produce Title 22 disinfected tertiary recycled water. During the dry season when recycled water demands are high, recycled water is produced using sand filtration and ultraviolet (SFUV) disinfection facilities, which have a treatment capacity of 16.2 MGD. In 2023, Pleasanton submitted payment to DSRSD to buy into increased recycled water treatment capacity at the RWTF, which increased Pleasanton’s capacity ownership to 2.7 MGD.

DSRSD’s RWTF also includes microfiltration and ultraviolet disinfection facilities (MFUV) with a treatment capacity of 3.0 MGD. These facilities currently act as backup facilities for the SFUV facilities and are used during times of low and high demands. T he SFUV facilities have less flexible startup and shutdown requirements, whereas the MFUV facilities have a wide turndown range; therefore, they are used during low flow periods. During high demand periods, the SFUV facilities are used, with the MFUV facilities serving as backup when units in the SFUV facilities are undergoing maintenance, repair, or replacement.

DSRSD’s MFUV facilities were designed to produce recycled water suitable for both non -potable reuse and groundwater recharge, a potential future use that would replenish and improve local groundwater quality. MFUV construction was completed in 1999. The MFUV project is currently producing recycled water that meets California Title 22 requirements for unrestricted reuse and received approval for groundwater recharge from the California Department of Public Health (now under SWRCB as DDW) and RWQCB. Though Zone 7 and other retailers intend to further explore the option to purif y recycled water through advanced treatment to enable potable reuse, the City has currently elected not to participate in the Tri-Valley potable reuse efforts.

Treated effluent that is not recycled is discharged into the San Francisco Bay through a pipeline owned by LAVWMA, a joint powers agency created in 1974 by DSRSD, Livermore, and Pleasanton. The LAVWMA pipeline began operating in September 1979 and expanded in 2005. With a capacity of 41.2 MGD, the 16- mile LAVWMA pipeline conveys treated effluent from Pleasanton to the EBDA system in San Leandro for dichlorination, then discharge to the San Francisco Bay through a deepwater outfall.

6.5.2.2 Livermore Water Reclamation Plant
Livermore owns and operates the LWRP, which treats wastewater collected from Livermore, Lawrence Livermore National Laboratory, and Pleasanton’s Ruby Hills housing development. From 20 21 to 2024, the LWRP received an average daily flow of approximately 5.4 MGD. LWRP uses conventional primary and secondary wastewater treatment processes and applies tertiary treatment to produce recycled water.

LWRP’s conventional wastewater treatment processes consist of the following:
• Primary sedimentation where heavy organic solids are removed from the raw sewage and sent to solids stabilization and dewatering facilities
• Secondary treatment utilizing the activated sludge process, which removes 85% to 95% of the remaining organic material after primary sedimentation • Disinfection using sodium hypochlorite to reduce the bacteria levels in the secondary effluent prior to disposal
• Disposal of secondary effluent through the LAVWMA pipeline • Solids stabilization using anaerobic digestion followed by belt pressing for dewatering prior to beneficial reuse as alternate daily cover or land application LWRP’s tertiary treatment for recycled water consists of the following:
• Mono-media filters, where 95% to 99% of suspended material is removed from secondary effluent

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• Disinfection using ultraviolet (UV) light prior to disposal The disinfected tertiary-treated effluent satisfies California Title 22 requirements for unrestricted water reuse and is used by the City for landscape irrigation. The LWRP treats an average of 2.2 MGD to tertiary standards. While the tertiary filtration capacity of the LWRP is approximately 10 MGD, the overall recycled water production capacity is limited by the UV disinfection capacity to 6 MGD.

6.5.2.3 Wastewater Collection, Treatment, and Discharge Within Service Area The volume of wastewater collected and treated from Pleasanton’s service area is shown in Table 6 -3.

The reported volumes sent to DSRSD’s RWTF derive from DSRSD’s influent meters, and the volumes sent to the LWRP are based on estimates from the City of Livermore. Table 6-4 summarizes the service area wastewater treatment and discharge volumes.

Table 6-3 Wastewater Collected Within Service Area in 2025 (DWR Table 6-2) Wastewater Collection Recipient of Collected
Wastewater
Name of Wastewater
Collection Agency
Wastewater
Volume
Metered or
Estimated?
(OPTIONAL)
Volume of Wastewater
Collected from UWMP
Service Area 2025
Name of
Wastewater
Treatment Plant
(WWTP) and
Place ID Number
Is WWTP
Located
Within
UWMP
Area? (AF)
City of Pleasanton Metered 6,442 DSRSD RWTF,
Place ID 220792 Yes
City of Pleasanton (Ruby
Hills Development) Estimated 280 LWRP, Place ID
237195 No
Total Wastewater Received from UWMP
Service Area in 2025: 6,722
Wastewater treated at DSRSD’s RWTF, which is located in Pleasanton’s service area, includes wastewater that originated in Pleasanton and DSRSD’s wastewater service area ( Dublin and south San Ramon ).

Table 6-4 identifies these volumes for 2025, along with the amount of recycled water from DSRSD’s RWTF used in the Pleasanton’s service area. This includes recycled water delivered to Pleasanton’s distribution system and recycled water used for landscape irrigation at DSRSD’s RWTF.

Though Pleasanton received approximately 90 AF of recycled water supplies from the LWRP in 2025, this value is not included in Table 6-4 because the LWRP is not located in Pleasanton’s service area.

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Table 6-4 Wastewater Treatment and Outcomes Within UWMP Service Area in 2025 (DWR Table 6-3) Wastewater
Treatment Plant
Name and Place
ID Number
Does This
Plant Treat
Wastewater
Generated
Outside the
UWMP
Service
Area?
2025 Volume
of
Wastewater
Received
from UWMP
Service Area
(as Reported
in DWR
Table 6-2)
Total
2025
Volume
of Water
Treated
(a)
2025 Outcomes of Treated Wastewater
Water Recycled
Within UWMP
Service Area
Water Recycled
Outside of UWMP
Service Area
Effluent Discharge that
is not a Permitted
Recycled Water Use
Required Discharge
for Instream Flow
Delivered to Another Entity for
Additional Treatment
Treatment
Level
Volume Treatment
Level
Volume Treatment
Level
Volume Treatment
Level
Volume Treatment
Level
Volume Name of
other
entity (AF) (AF) (AF) (AF) (AF)

DSRSD RWTF,
Place ID
220792
Yes 6,442 13,500 Tertiary 983 Tertiary 3,397 Secondary, Undisinfected 8,323 -- 0 -- 0 --
Total 6,442 13,500 983 3,397 8,323 0 0
NOTE:

The volume of total treated water is greater than the sum of the wastewater treatment outcomes. As noted in the DWR 2025 UWMP Guidebook, this is often the case because of biosolids removal and treatment losses.

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6.5.3 Recycled Water System Description
In March 2014, the City commenced delivery of recycled water from DSRSD, starting with Val Vista Park, and expanded the service under a contractual agreement in 2015 as part of the City’s recycled water program expansion. The City constructed its non-potable distribution system to deliver recycled water landscapes from DSRSD’s RWTF to landscapes previously irrigated with potable water. Construction of the recycled water distribution system involved installing about 51,500 LF of new recycled water pipeline (ranging from 6- to 20-inch diameter) and about 22,400 LF of pipeline converted from the City’s potable distribution and repurposed for the recycled water system. The rec ycled water system connects to DSRSD’s RWTF and the City’s existing 8 million gallon (MG) recycled water reservoir (Tassajara Reservoir), which was converted from a potable water storage facility in 2017. In 2022, the City also added new recycled water pump station at the Ken Mercer Sports Park.

The City developed the recycled water distribution system on the north-east side of Pleasanton, which is serviced by Livermore, concurrent with new development projects. Recycled water deliveries from LWRP to that portion of the City began in 2013-2014, initially under Livermore’s recycled water permit coverage and now under the City’s own permit coverage that was established in July 2015.

Currently, the City has 9 8 permitted sites, which include 150 of the 161 metered connections initially targeted. The City provides recycled water primarily for irrigation customers, including City parks, schools, commercial property landscaping, streetscapes, and multi-family residential common areas. Additionally, the City has one customer with one dual plumbing and periodically supplies recycled water to construction sites during development. This supply offsets the use of potable water purchased from Zone 7 and local groundwater supplies.

The City’s certified cross-connection specialist continues to work with the future customers along existing infrastructure in preparation for conversion to the recycled water system , as well as monitoring existing sites for regulatory compliance oversight.

6.5.4 Potential, Current, and Projected Recycled Water Uses

Recycled water improves water supply reliability, preserves potable water supplies, and reduces wastewater discharges. Pleasanton’s recycled water users were originally serviced under the authority of DSRSD or Livermore’s General Order 96-011. In April 2020, Pleasanton, Livermore, and DSRSD transitioned  CWC §10633 (c-g)
(c) A description of the recycled water currently being used in the supplier’s service area, including, but not limited to, the type, place, and quantity of use.
(d) A description and quantification of the potential uses of recycled water, including, but not limited to, agricultural irrigation, landscape irrigation, wildlife habitat enhancement, wetlands, industrial reuse, groundwater recharge, indirect potable reuse, and other appropriate uses, and a determination with regard to the technical and economic feasibility of serving those uses. (e) The projected use of recycled water within the supplier’s service area at the end of 5, 10, 15, and 20 years and a description of the actual use of recycled water in comparison to uses previously projected pursuant to this subdivision.
(f) A description of actions, including financial incentives, which 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. (g) A plan for optimizing the use of recycled water in the supplier’s service area, including actions to facilitate the installation of dual distribution systems, to promote recirculating uses, to facilitate the increased use of treated wastewater that meets recycled water standards, and to overcome any obstacles to achieving that increased use.

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from San Francisco Bay RWQCB General Order 96-011 to SWRCB General Order 2016. The City currently permits the following recycled water uses:
• Landscape irrigation to designated irrigation meters
• Construction water, dust control, and surface washing • Dual plumbing
In 2025, the City had a total of 98 permitted recycled water irrigation sites, including one dual plumbing site, and one permitted temporary hydrant service approved for construction use (dust control and surface washing). No permits have been issued that include impoundments. In 202 5, these customers used a combined total of 1,073 AF of recycled water combined, primarily for landscape irrigation (with about 0.8 AF used for dual plumbing, and 0.1 AF for construction dust control).

Table 6-5 summarizes the amount of recycled water used in 2025 and projected for future use for various beneficial uses. In accordance with DERWA’s Resolution No. 19-3, the City does not currently have plans to substantially expand its recycled water system. The City expects to connect seven irrigation customers located along the existing recycled water distribution system by 2045. These new customers are projected to increase recycled water demands to 1,340 AFY. Pleasanton projects that 100 AFY of the total demand will continue to be supplied by the City of Livermore and DERWA will supply the remaining 1,240 AFY.

Pleasanton’s 2.7 MGD ownership of the treatment capacity at DSRSD’s RWTF is expected to be sufficient to meet projected annual demands. The actual and projected recycled water uses do not include system losses.

Table 6-6 compares the City’s 2025 recycled water use as projected in the 2020 UWMP to actual use measured in 20 25. The City’s recycled water use in 2025 was less than the level projected in the 2020 UWMP due to DERWA’s currently limited recycled water supply and the moratorium on new connections.

As such, beyond the seven irrigation customers along the distribution system, Pleasanton does not have plans to expand its recycled water distribution system at this time, which has reduced the City’s projected future recycled water demands compared to the projections shown in the 2020 UWMP.

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Table 6-5 Recycled Water Direct Beneficial Uses Within Service Area (DWR Table 6-4) Name(s) of Facility/ies Producing (Treating) the Recycled Water (OPTIONAL): DSRSD RWTF and LWRP Name of Supplier Operating the Recycled Water Distribution System (OPTIONAL): City of Pleasanton Use Type
Water Type
(After treatment if
treated)
(OPTIONAL)
Additional
Information
(As needed)
2025 2030 2035 2040 2045
Potential Recycled
Water Use
Volume
Narrative
page
number
(OPTIONAL)
(AF) (AF) (AF) (AF) (AF)
Landscape irrigation
(excl. golf courses) Non-Potable 1,072 1,241 1,272 1,304 1,339 Other (a) Non-Potable Dual Plumbing 1 1 1 1 1
Other (b) Non-Potable Construction uses 0 0 0 0 0
Total 1,073 1,242 1,273 1,305 1,340 0
NOTES:
(a) Pleasanton's dual plumbing connection is expected to continue to contribute approximately 1 AFY of demand. (b) Pleasanton's two construction connections are expected to continue to contribute less than 0.5 AFY of demand, which is rounded down to 0 AF Y.

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Table 6-6 2020 UWMP Recycled Water Use Projection Compared to 2025 Actual (DWR Table 6-5) Use Type
2020 Projection for
2025 (a) 2025 Actual Use (a)
(AF) (AF)
Landscape irrigation (excl. golf courses) 1,500 1,072
Other (a) 1
Other (b) 0
Total 1,500 1,073
NOTES:
(a) Pleasanton's one dual plumbing connection contributed approximately 1 AF of demand in 2025 . (b) Pleasanton's two construction connections only accounted for 0.1 AF in 2025, which is rounded down to 0 AF in the DWR reporting tables.

6.5.5 Actions to Encourage and Optimize Future Recycled Water Use Optimizing the use of recycled water is an important part of a reliable long-term irrigation supply for the City, which has the political support from City Council and City Management for implementing a robust recycled water program. Chapter 14.20 of the P leasanton Municipal Code established a policy requiring irrigation customers directly along the recycled water distribution system to convert/connect to recycled water service consistent with all applicable legal requirements, except for specific defined e xemptions.

The major obstacle for the remaining identified customers that have yet to convert to recycled water are significant site-specific factors that require costly or currently impractical modifications to meet Title 22 site requirements for connection. Such sites will be connected during future new/redevelopment.

The City continues to encourage customers located along the existing recycled water distribution system to convert to recycled water. The connection fee to service new irrigation accounts is lower for recycled water than potable water. All new or redevelopment projects within the recycled water distribution area with irrigation meters (i.e., meters that service strictly landscape irrigation) are conditioned to convert to recycled water. Additionally, irrigation meters servicing City-owned properties within the recycled water distribution area have been converted to recycled water. The City’s ongoing actions to encourage the use of recycled water are summarized in Table 6-7.

Table 6-7 Methods to Encourage Future Recycled Water Use (DWR Table 6-6) Name of Action Description
Planned
Implementation
Year
Expected Increase in
Recycled Water Use
(AFY)
Financial Incentives Reduced connection fees for
new recycled water meters Ongoing 112
Conditional Requirement
for New/Redevelopment
Projects
All landscape irrigation meters
will be converted to recycled
water along the recycled
water distribution system
Ongoing 0
Total 112

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6.6 Desalinated Water Opportunities

Due to infeasibility, Pleasanton is not considering the development of a desalinated water system as a source of water within the planning horizon. This includes ocean water, brackish water, and groundwater desalination (though Zone 7 desalinates a portion of its groundwater).

6.7 Water Exchanges and Transfers

Pleasanton currently does not have any potable water transfer agreements, nor does the Pleasanton anticipate participating directly in any such transfer opportunities in the future. Pleasanton has two existing pipeline interties with DSRSD and one pipeline intertie with the Livermore for rapid emergency response. These interties are strictly for emergency conditions, such as a major pipeline break, supply contamination, or water service interruption due to earthquakes, floods, or other disasters.

Zone 7 periodically supplements existing supplies with short-term transfers when needed and intends to more regularly acquire transfer water over the coming decade until major supply reliability project(s) come online starting around 2035. The proposed water transfers include supply from the Yuba Accord and the Dry Year Transfer Program (DYTP) administered by the SWC s. Transfers could also involve agreements between Zone 7 and other SWC s and/or between Zone 7 and other water purveyors. The DYTP coordinates and negotiates water sales between interested SWC s and sellers in the Feather River watershed. The most expedient and cost -effective transfer option is likely a transfer agreement with another SWC using the SWP system that Zone 7 already invests in. Transfer water would be conveyed to Zone 7 through the Delta and the SBA; t he transfer amount could vary from year- to-year depending on hydrology. For the 2025 UWMP, Zone 7 is assuming 3,000 AFY in water transfers through 2035.

Additionally, in some years, Zone 7 participates in water transfers as a seller. For example, t his was the case in 2023 and 2025 when Zone 7 transferred 8,000 AF and 4,000 AF (respectively) to other SWCs. These transfers were non-permanent Table A transfers.

Zone 7 will continue to pursue and evaluate transfer opportunities in the Bay Area and statewide. Through the Bay Area Regional Reliability (BARR) Partnership, Zone 7 participated in a regional project, funded in part by a U.S. Bureau of Reclamation grant, to develop the Bay Area Shared Water Access Program that identified water transfer opportunities and a roadmap to facilitate transfers and exchanges among water suppliers the Bay Area.

As discussed in Section 6.8.1.1, the Delta Conveyance Project may also create opportunities for long-term water transfers between SWCs across the state.
 CWC §10631(g) A plan shall be adopted in accordance with this chapter and shall do all of the following:

Describe the opportunities for development of desalinated water, including, but not limited to, ocean water, brackish water, and groundwater, as a long-term supply.  CWC §10631 (c) A plan shall be adopted in accordance with this chapter and shall do all of the following:

Describe the opportunities for exchanges or transfers of water on a short -term or long-term basis.

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6.8 Future Water Projects

Pleasanton itself does not have any plans for new water supply projects (Table 6-8).

However, as described in Section 6.2.3.4, Pleasanton is working with Zone 7 to develop new groundwater wells to enable the City access to its full GPQ . This project is intended to allow Pleasanton to continue accessing its existing supplies (rather than developing new supplies).

Table 6-8 Expected Future Water Supply Projects or Programs (DWR Table 6-7) ☒ No expected future water supply projects or programs that provide a quantifiable increase to the agency's water supply.

As Zone 7 purchases are Pleasanton’s primary source for potable water, the City supports Zone 7’s efforts to pursue opportunities to improve water supply reliability . As SWP reliability continues to decline and the Tri -Valley population grows, Zone 7 anticipates future supply deficits and, as a result, is pursuing several opportunities to obtain additional water storage and water supplies, address the need for alternative conveyance in the Delta, and improve access to groundwater and local emergency supplies.

As part of the 2022 WSE Update , Zone 7 evaluated potential future water projects and anticipated contributions to improving reliability of its water supply system. Zone 7 expects that a portfolio (i.e., likely a subset) of projects will be needed to address future supply deficits. Projects that Zone 7 is continuing to consider are described in the following subsections.

6.8.1 Supply Projects

6.8.1.1 Delta Conveyance Project
The Delta, a key conveyance component of the SWP, is increasingly threatened by ecosystem considerations, seismic risk, and climate change/sea level rise, reducing the reliability of the SWP system.

The Delta Conveyance Project ( DCP) will reduce these risks and partially restore the SWP’s projected reliability.

In early 2019, Consistent with Executive Order N-10-19, the state announced a single tunnel project, which proposed a set of new diversion intakes along the Sacramento River in the north Delta for the SWP. In 2019, DWR initiated planning and environmental review for the single tunnel (i.e., the DCP) to protect the reliability of SWP supplies from the effects of climate change and seismic events, among other risks. On December 21, 2023, DWR certified the Environmental Impact Report and approved the DCP selecting Bethany Reservoir Alignment for further engineering, design, and permitting. DWR received the Incidental Take Permit for the DCP from the California Department of Fish and Wildlife (DFW) in February 2025.

Currently, DWR is in the process of obtaining a change in point of diversion permit from t he SWRCB to  CWC §10631 A plan shall be adopted in accordance with this chapter and shall do all of the following:
(b) (3) For any planned sources of water supply, a description of the measures that are being undertaken to acquire and develop those water supplies.
(f) Include a description of all water supply projects and water supply programs that may be undertaken by the urban water supplier to meet the total projected water use, as established pursuant to subdivision (a) of Section 10635. The urban water supplier shall include a detailed description of expected future projects and programs that the urban water supplier may implement to increase the amount of the water supply available to the urban water supplier in normal and single- dry water years and for a perio d of drought lasting five consecutive water years. The description shall identify specific projects and include a description of the increase in water supply that is expected to be available from each project. The description shall include an estimate with regard to the implementation timeline for each project or program.

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add the two proposed DCP diversion intakes to the SWP ’s water rights. In October 2025, DWR certified that DCP is consistent with the Delta Plan. DWR is continuing with design refinements, environmental planning and permitting through 2026-27, including resolving appeals on its Delta Plan certification. DCP will potentially be operational in 2045 following extensive planning, permitting and construction.

DWR estimates of SWP supply reliability in the Draft 2025 DCR are based on existing facilities and do not include the proposed DCP. Since this UWMP uses DWR’s Draft 2025 DCR to estimate SWP supplies at 2043, any changes in SWP reliability resulting from th e proposed DCP are not included in this UWMP.

Most recent DWR estimates indicate that the DCP is expected to increase SWP Delta exports by about 467,000 AFY on a long-term average under current climate conditions.

The Zone 7 Board has approved funding and participation in planning, permitting, and other pre - construction work of the DCP through 2027. The Zone 7 Board has not yet decided whether to participate in construction of the project. For planning purposes, the 2025 UWMP does not include DCP, since it is expected to come online around 2045, near the end of Zone 7’s future planning period.

Continued participation by Zone 7 in the planning efforts will allow Zone 7 to elect to participate in the DCP implementation in the future based on information developed in the planning process, allow access by Zone 7 to information related to benefits and costs, and provide Zone 7 influence throughout the process. The work over the next two to four years will inform the Zone 7 Board’s decision-making as the DCP continues to advance.

6.8.1.2 Potable Reuse
Potable reuse involves advanced treatment of recycled water to produce purified water to supplement potable water supplies. Though Zone 7 does not currently have a potable reuse project planned , Zone 7 and its three other Tri-Valley retailers are evaluating this option as a potential source of new supply. While recycled water for non-potable uses (e.g., irrigation) has been available for many years in the Tri- Valley, potable reuse would be a new use of local wastewater resources collected by DSRSD and Livermore, if implemented. Its main benefits include lo cal production and control, drought -resilient supply, and resource recovery.

Although Zone 7 does not provide recycled water, its retailers have provided recycled water service for many years. Initiating potable reuse in the Tri-Valley would involve a partnership between Zone 7 and its participating retailers to manage the wastewater collection and treatment, and purified water production and distribution/storage. Local wastewater resources would be collected by DSRSD and/or Livermore and treated to meet drinking water standards. Following treatment, potential purified water uses could include: 1) groundwater augmentation or recharge, 2) storage in the COLs , and/or 3) raw water augmentation to Zone 7’s Del Valle Water Treatment Plant (DVWTP).

Zone 7 collaborated with Tri-Valley retailers to develop the Joint Tri-Valley Potable Reuse Feasibility Study in 2018, which evaluated the feasibility of potable reuse in the Tri- Valley. An updated study may be developed in upcoming years. Zone 7 also part icipated with ACWD , Livermore, DSRSD, LAVWMA, and Union Sanitary District on a project which developed outreach materials in 2025 to support purified water awareness.

This 2025 UWMP does not include potable reuse as a future supply for the City and does not assume potable reuse to be part of Zone 7’s supply portfolio.

6.8.1.3 Sites Reservoir
Sites Reservoir is a proposed new 1,500,000 AF off-stream storage reservoir in northern California near Maxwell. Sacramento River flows will be diverted during excess flow periods and stored in the off-stream reservoir and released for use in the drier periods. Shown in Figure 6-5, Sites Reservoir is expected to

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provide water supply, environmental, flood and recreational benefits. The proponents of Sites Reservoir include 30 entities including several individual SWP Public Water Agencies. Sites Reservoir is expected to provide approximately 205,000 AF (Sites Reser voir Final Environmental Impact Report /Environmental Impact Statement, Table 5-30, Alternative 3) of additional deliveries on average to participating agencies under existing conditions. Sites Reservoir is currently undergoing environmental planning and permitting.

Sites Reservoir project filed a water rights petition and is expected to receive a water right permit in 2026 from the SWRCB. DWR estimates of SWP supply reliability in its Draft 2025 DCR are based on existing facilities, and do not include the proposed Sites Reservoir.

Zone 7 participates in the project as a member of the Reservoir Committee. Composed of 22 water suppliers from across California that are investing in the project , t he Reservoir Committee provides recommendations to the Sites Project Authority to help advance the project.

For planning and budgeting purposes, Zone 7 anticipates its share of flow releases from Sites Reservoir to average 5,000 AFY. Yet , the average annual water supply from Sites Reservoir is estimated to be 4,000 AFY after accounting for carriage water (i.e., supply losses as the water flows through the Delta). This level of water supply is equivalent to Zone 7’s likely share of storage in the reservoir , assumed to be about 31,170 AF (or 3% of the storage capacity allocated to participating water agencies ). As currently envisioned, Sites Reservoir would be utilized by Zone 7 as a water supply for all year types (i.e., wet, average, and dry years).

Source: Sites Project Authority
Figure 6-5 Sites Reservoir Project: Location and Facilities

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In December 2016, the Zone 7 Board authorized participation in Phase 1 of the project. In January 2022, the Zone 7 Board authorized participation through the completion of Phase 2 at the end of December 2024. Phase 2 focused on completing the environmental documentation, securing key permits, advancing design to a 30% level, and preparing for long -term financing. Additionally, in January 2026, the federal government approved the Record of Decision for the project.

Sites Reservoir is expected to break ground in late 2026 and is planned to be fully operational in 2034. For this 2025 UWMP, 4,000 AFY of future supply from Sites Reservoir will be available to Zone 7 by 2034.

6.8.2 Infrastructure Projects

6.8.2.1 Chain of Lakes Conveyance System
Zone 7 is planning the Chain of Lakes Conveyance System (COLCS), a project that interconnects retired gravel quarries with existing water supplies for local surface water storage. This project will have multiple benefits, including:
• provide Zone 7 with an emergency supply during a prolonged SWP outage, • enhance drought supplies,
• improve recharge of the local groundwater basin,
• make water available for transfers,
• allow Zone 7 to divert surplus water, and
• perfect local water rights.

The current phase of the project involves two of the retired quarry lakes, Lake I and Cope Lake, which Zone 7 already owns. The project would build a two-way pipeline to allow them to be used as a reservoir.

During wet periods, the project will enable the storage of local and SWP water that would otherwise be lost or require non-local storage. This water would then be pumped back to Zone 7’s DVWTP during dry periods, thereby enhancing water supply reliability.

The project involves constructing a 42-inch diameter, 6.5-mile bidirectional pipeline between DVWTP and Lake I, in addition to inlet and outlet facilities at Lake I, a pump station, and PFAS treatment facilities at DVWTP. Lake I and Cope Lake have a combin ed storage capacity of approximately 36,400 AF. Over the coming years, additional quarries are slated to be transferred to Zone 7 and integrated into this project, adding storage capacity or other multi- benefit opportunities. As shown in Figure 6-6, the COLs includes ten lakes named Lakes A through I and Cope Lake, which cover approximately 1,500 acres.

In 2023, Zone 7 completed a pipeline alignment study to evaluate the cost and benefits associated with potential pipeline alignments. The West Alignment was chosen as the preferred alternative due to its shortened route compared to other alternatives, use of an existing access road /recreational trail, and avoidance of construction through the quarries. In 2024, a feasibility study was done , and from 2025 - 2026, three facilitated brainstorming workshops were conducted to define and develop the project. If approved by the Zone 7 Board, planning efforts over the next few years include preliminary engineering and design, permitting, and obtaining right-of-way easements.

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Figure 6-6 Chain of Lakes: Existing and Planned Facilities

6.8.2.2 New Wells
Additional municipal water supply wells could maximize access to existing local storage in the Main Basin during droughts and facility outages. Zone 7’s Mocho I well has been out of service since 2019. Zone 7 has since been seeking opportunities to recover groundwater production by adding additional wells to replace Mocho I.

As discussed in Section 6.2.4, Zone 7 and Pleasanton are evaluating the feasibility of constructing additional municipal supply wells in the Bernal Sub basin. This Joint Regional Groundwater Wells project would serve both Zone 7 and Pleasanton . The project would enable the City to access its annual GPQ (3,500 AFY) and would expand Zone 7’s existing Hopyard W ellfield in the Bernal Subbasin , an area currently outside of the PFAS plume. If successful, the project is expected to improve the region’s water supply reliability and drought resilience.

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6.9 Summary of Existing and Planned Sources of Water

Pleasanton’s water supplies consist of potable water purchased from Zone 7, recycled water produced by DSRSD and Livermore, and groundwater pumped by the City. Table 6 -9 summarizes the actual water supply volumes produced in 2025. Groundwater accounted for nearly 0% of Pleasanton’s water supplies in 2025, because Pleasanton has had to decommission its existing production wells, as described in Section 6.2. As noted in Table 6-10, Pleasanton does not reduce salinity in either groundwater or surface water prior to distribution.

With the implementation of the Joint Groundwater Wells Project (see Section 6.2.4), Pleasanton expects to begin pumping its full GPQ (3,500 AFY) again, starting in 2030. Purchased water from Zone 7 is expected to increase in the future to meet increased demands, while groundwater and recycled water supplies will stay constant. Pleasanton’s total water supply projections are shown in Table 6-11 in five-year increments through 2050.

Table 6-9 Water Supplies – 2025 Actual (DWR Table 6-8)
Water Supply Additional Description
2025
Water Type
Actual
Volume
Total
Entitlement
(AF) (AF)
Purchased or
Imported Water Zone 7 Wholesale Water Potable 12,660 -- Groundwater (not
desalinated) Livermore Valley Basin Potable 3 3,500
Recycled Water DSRSD RWTF and LWRP Non-Potable 1,073 -- Subtotal Potable 12,663 --
Subtotal non-potable 1,073 --
Total 13,736 --

 CWC §10631(b)
Identify and quantify, to the extent practicable, the existing and planned sources of water available to the supplier over the same five-year increments described in subdivision (a).  CWC §10631(b)(2)
When multiple sources of water supply are identified, a description of the management of each supply in correlation with the other identified supplies.
 CWC §10631(b)(4)(D)
A detailed description and analysis of the amount and location of groundwater that is projected to be pumped by the urban water supplier. The description and analysis shall be based on information that is reasonably available, including, but not limited to, historic use records.

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Table 6-10 Source Water Desalination by Urban Water Supplier (DWR Table 6-8 DS) ☒ Checked box indicates Supplier does not reduce salinity in either groundwater or surface water prior to distribution.

Table 6-11 Water Supplies – Projected (DWR Table 6-9)
Water Supply Projected Water Supply
Water Source Additional Detail
on Water Supply Water Type
2030 2035 2040 2045
Reasonably
Available
Volume
Total
Entitlement
(OPTIONAL)
Reasonably
Available
Volume
Total
Entitlement
(OPTIONAL)
Reasonably
Available
Volume
Total
Entitlement
(OPTIONAL)
Reasonably
Available
Volume
Total
Entitlement
(OPTIONAL)
(AF) (AF) (AF) (AF) (AF) (AF) (AF) (AF)
Purchased or
Imported Water
Wholesale
Water
Potable 11,659 -- 12,515 -- 13,374 -- 14,332 --
Groundwater
(Not desalinated)
Livermore
Valley Basin
Potable 3,500 3,500 3,500 3,500 3,500 3,500 3,500 3,500 Recycled Water

DSRSD RWTF
and LWRP
Non-Potable 1,242 -- 1,273 -- 1,305 -- 1,340 --
Subtotal Potable 15,159 3,500 16,015 3,500 16,874 3,500 17,832 3,500 Subtotal Non-potable 1,242 0 1,273 0 1,305 0 1,340 0
Total 16,401 3,500 17,288 3,500 18,178 3,500 19,172 3,500

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Figure 6-7 Water Supplies – Current and Projected

6.10 Special Conditions
Special conditions related to water supplies (including climate change effects, regulatory conditions and project development) are described in the following subsections.

6.10.1 Climate Change Effects
Pleasanton and its wholesaler, Zone 7, are committed to incorporating climate change into their ongoing water supply planning. Section 4.7 of this UWMP includes a description of plausible changes to projected demands under climate change conditions.

Since the SWP is the main source of Zone 7’s water supplies, climate change impacts to the SWP could significantly impact Zone 7. Supplies derived from the SWP, including Table A deliveries, groundwater (i.e., stored SWP water), and SWP carryover, represent roughly 90% of Zone 7’s supplies now and in the future.

As described in Section 6.1.2.1.2, the scenarios in the Draft 2025 DCR that were used for this UWMP account for climate change impacts based on 2043 emissions level and 15 centimeter (cm) sea level rise; therefore, these impacts have been incorporated into Zone 7’s water supply planning efforts.

In the 2022 WSE Update, Zone 7 evaluated the impacts of climate change on its water supplies (SWP, Arroyo Valle, Main Basin) using a conservative risk-based analysis. As downscaling of climate change data is further refined, the City will incorporate local climate change impacts in future UWMPs and other planning efforts.

6.10.2 Regulatory Conditions and Project Development
Pleasanton currently plans to develop new wells in partnership with Zone 7 as described in Section 6.2.4.

This project is in response to PFAS detections and the subsequent decommissioning of Pleasanton’s production wells. With the EPA’s recent adoption of MCLs for several PFAS compounds, this project is particularly important for meeting water quality standards and maintaining the City’s access to safe and reliable water supply.
0 5,000
10,000
15,000
20,000
25,000
2025 (Actual) 2030 2035 2040 2045
Water Supply (AFY)
Purchased or Imported Water Groundwater (not desalinated) Recycled Water

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6.11 Energy Intensity

This section presents the City’s energy intensity related to the extent that the information is available, in accordance with CWC §10631.2(a). Energy intensity is the amount of energy used on a systemwide basis over a one-year period to take water from the location where a supplier acquires the water to its point of delivery. For Pleasanton, this metric includes energy used to treat groundwater (when local wells are in use), pump, and distribute the City’s water supply within the system it owns and operates. Th is metric does not include the energy used by Zone 7 to convey and treat raw water and /or to deliver treated potable water to the City.

Assessing energy intensity can help to inform water supply management and system operation strategies, such as:
• Identifying opportunities to reduce operational costs of water delivery by reducing energy use;
• Calculating energy savings and greenhouse gas emissions reductions associated with water conservation programs;
• Identifying potential opportunities for receiving energy efficiency funding for water conservation programs;
• Informing climate change mitigation strategies; and
• Benchmarking energy use at each water acquisition and delivery step and comparing energy use among similar agencies.

Energy intensity is reported as kilowatt-hours (kWh) per unit of water delivered . Table 6-12 shows Pleasanton’s emergency intensity for potable water in 2025.

 CWC §10631.2
(a) In addition to the requirements of Section 10631, an urban water management plan shall include any of the following information that the urban water supplier can readily obtain:
(1) An estimate of the amount of energy used to extract or divert water supplies. (2) An estimate of the amount of energy used to convey water supplies to the water treatment plants or distribution systems.
(3) An estimate of the amount of energy used to treat water supplies. (4) An estimate of the amount of energy used to distribute water supplies through its distribution systems. (5) An estimate of the amount of energy used for treated water supplies in comparison to the amount used for nontreated water supplies.
(6) An estimate of the amount of energy used to place water into or withdraw from storage. (7) Any other energy-related information the urban water supplier deems appropriate. (b) The department shall include in its guidance for the preparation of urban water management plans a methodology for the voluntary calculation or estimation of the energy intensity of urban water systems. The department may consider studies and calculations conducted by the Public Utilities Commission in developing the methodology.
(c) The Legislature finds and declares that energy use is only one factor in water supply planning and shall not be considered independently of other factors.

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Table 6-12 Recommended Energy Reporting: Single Delivery Product, Total Utility Approach (DWR Table O-1B)
Water Delivery Product
Retail
Potable
Deliveries
Only for Water Delivery Products Under
Pleasanton’s Operational Control
Start Date of Reporting Period 1/1/2025 Sum of All
Water
Management
Processes
Non-Consequential
Hydropower
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 Hydropower Net Utility Volume of Water Entering Process (AF) 12,663 12,663 Energy Consumed (kWh) 1,238,681 1,238,681
Energy Intensity (kWh/volume converted to
MG)
300 300
Quantity of Self-Generated Renewable Energy
100,883 kWh
Data Quality (Estimate, Metered Data, Combination of Estimates and Metered Data) Metered Data
Data Quality Narrative:

Data is provided by the City from flow meters in the water distribution system and electric meters at its water facilities
Narrative:

Water management processes consuming energy include distribution/pumping, storage tank operations and groundwater pumping and treatment. At one of its wells, the City has photovoltaic solar panels that generate renewable energy. The amount of energy that Zone 7 requires to treat raw water and deliver potable water to the City is excluded from this table.

As discussed in Section 6.5, the City owns and manages its sewage collection system and transports the sewer flow to wastewater treatment plants owned and operated by DSRSD and Livermore. Pleasanton also operates its recycled water distribution system, which has two facilities with significant energy requirements: the Tassajara Storage Tank and the recycled water pump station at Ken Mercer Sports Park.

Table 6-13 shows the energy intensity associated with the City’s wastewater and recycled water services (excluding treatment) in 2025.

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Table 6-13 Recommended Energy Reporting: Wastewater and Recycled Water (DWR Table O-2) Start Date of
Reporting Period 1/1/2025 Only for Water Delivery Products Under Pleasanton’s Operational Control End Date of
Reporting Period 12/31/2025
Is upstream
embedded
energy in the
values reported?
No Water Management Process
Units of Measure
for Water AF Collection /
Conveyance Treatment Discharge /
Distribution Total
Volume of Wastewater Entering Process (AF) 6,722 -- -- 6,722 Wastewater Energy Consumed (kWh) 369,242 -- -- 369,242
Wastewater Energy Intensity (kWh/volume
converted to MG) 169 0 0 169
Volume of Recycled Water Entering Process (AF) -- -- 1,073 1,073 Recycled Water Energy Consumed (kWh) -- -- 120,157 120,157 Recycled Water Energy Intensity (kWh/volume
converted to MG) 0 0 344 344

Quantity of Self-Generated Renewable Energy related to recycled water and wastewater operations 0 kWh
Data Quality
Metered Data
Data Quality Narrative:

Data is provided by the City from flow meters in the water distribution system and electric meters at its water facilities
Narrative:

Pleasanton operates its own wastewater collection system and recycled water distribution system but does not provide treatment.

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7 WATER SUPPLY RELIABILITY ASSESSMENT

This section describes the City’s water service reliability under various hydrologic conditions, including a severe drought for the next five years. The City’s existing and planned water management tools for increasing water supply reliability are also addressed. Responses to actual water shortage conditions are detailed in Section 8 of this plan.

The reliability of the City’s potable water supply is largely dependent upon its water supply from Zone 7 and Zone 7’s water supply reliability policy. On October 17, 2012, the Zone 7 Board approved a revised Water Supply Reliability Policy (Resolution No. 13-4230), which adopts the following level of service goals to guide the management of Zone 7’s treated water (also referred to as M&I) supplies and its Capital Improvement Program (CIP):
• Goal 1: Zone 7 will meet its treated water customers’ water supply needs, in accordance with Zone 7’s most current Contracts for M&I Water Supply, including existing and projected demands as specified in Zone 7’s most recent UWMP, during normal, average, and dro ught conditions, as follows:
— At least 85% of M&I water demands 99% of the time
— 100% of M&I water demands 90% of the time
• Goal 2: Provide sufficient treated water production capacity and infrastructure to meet at least 80% of the maximum month M&I contractual demands should any one of Zone 7’s major supply, production, or transmission facilities experience an extended unplanned outage of at least one week.

To evaluate water service reliability, Zone 7 developed an advanced water supply management model for the 2022 WSE Update, which superseded the previous spreadsheet-based model developed for the 2019 WSE Update. The model is implemented in RiverWare and simulates Zone 7’s updated demand, integrated supply, storage, conveyance, treatment, and groundwater operations on a monthly time step, allowing the analysis to reflect seasonal patterns, operational constraints, water rights, and year-to-year carryover storage behavior. Hydrologic uncertainty is represented using the Index Sequential Method, which generates multiple hydrologic “traces” by shifting through the historical record so that wet, average, and dry sequences (including multi -year droughts) are preserved while providing many plausible future sequences for evalu ation. The historical hydrologic inputs (e.g., SWP availability and local hydrology proxies) are adjusted to account for climate change impacts and aging infrastructure in the SWP. Each trace is simulated across the full planning horizon (2025-2050). In this modeling effort , Zone 7 defines operating rules that represent how the system is managed as different supply sources come online or go offline—this includes priorities for use of SWP deliveries, local surface water, groundwater pumping, storage drawdown and refill targets, and use of banking and transfers—along with key physical constraints (e.g., conveyance capacities, treatment limits, pumping limits, and s torage capacities). For this 2025  CWC §10620 (f)
An urban water supplier shall describe in the plan water management tools and options used by that entity that will maximize resources and minimize the need to import water from other regions.  CWC §10630.5
Each plan shall include a simple lay description of how much water the agency has on a reliable basis, how much it needs for the foreseeable future, what the agency’s strategy is for meeting its water needs, the challenges facing the agency, and any other information necessary to provide a general understanding of the agency’s plan.

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UWMP, the results are presented in DWR’s required tables, listing the supply availability and potential shortages under normal, single dry, and multi dry year periods from 2025 to 2050.

7.1 Constraints on Water Sources
This section discusses the constraints on Pleasanton's potable water supply from Zone 7 and the recycled water supply that it produces. Strategies for managing the risks associated with each supply are also discussed.

7.1.1 Purchased Water Supply from Zone 7
One of the main limitations of Zone 7’s water system is the lack of interties. All of Zone 7’s imported water supplies are conveyed through the Delta and the SBA; Arroyo Valle water is also conveyed through the SBA. Zone 7 has been working closely with DWR , VW, and ACWD to improve the reliability of the SBA.

Between 2003 and 2012, DWR made improvements to the SBA within Zone 7’s service area to increase capacity and improve reliability. The work included a new pump station (180 cubic feet per second (cfs)), inline reservoir (500 AF) and increased the canal carrying capacity to 380 cfs. As part of this project, Zone 7 had an emergency slide gate installed to maintain service in the event of a pipeline rupture downstream.

Zone 7 will continue coordinating with DWR and South Bay Contractors to improve the reliability of the entire SBA system
In addition, Zone 7 is pursuing the following projects to diversify its conveyance options:
• Reliability Intertie – Zone 7 is also planning for the construction of a reliability intertie with another major water agency that would provide an alternative means of conveying water to Zone 7’s service area when the Delta and/or the SBA undergo an outage. For example, an intertie with EBMUD could convey treated water supply to the western portion of Zone 7’s service area.
• Chain of Lakes Conveyance System – This project would allow for access to water stored in the COLs as an alternative local water supply; water would be accessible to the Del Valle Water Treatment Plant (WTP) via one of the SBA turnouts.

7.1.1.1 SWP Supplies
Constraints on the SWP water supplies, including Delta conveyance, water quality, and SBA conveyance are discussed below.

7.1.1.1.1 Delta Conveyance
Zone 7’s long-term contract with DWR for SWP supply provides Zone 7 access to Table A water, Article 56c carryover water, and Article 21 water. As a SWC , Zone 7 can use SWP facilities to convey water transfers or exchanges of SWP water (from another contractor) or from another water agency outside of the SWP system. SWP water moves through the Delta before it is conveyed by the California Aqueduct and the SBA to Zone 7's water facilities.

The instability of the aging levees in the Delta (including their vulnerability to seismic events and climate change, further discussed in Section 7.1.5), regulatory uncertainty, water quality issues such as saltwater intrusion, and the impacts of climate change on water supply (such as reduced snowpack, altered runoff timing, and increased drought frequency), along with the declining health of the Delta ecosystem, all challenge the long -term reliability of the SWP and, more generally, the Delta’s water conveyance capability. These issues directly challenge the Tri- Valley’s long -term water supply reliability since a majority of Zone 7’s water supply is and will continue to be tied to the Delta and SWP system . Zone 7’s 2025 UWMP discusses additional current and future constraints on Delta conveyance, including

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regulatory constraints from the Coordinated Operations Agreement; operational constraints due to the Endangered Species Act; emergency management constraints necessary to prepare for potential Delta outages or interruptions from floods, earthquakes, and other risks; and impacts from subsidence.

Further, Zone 7 and other SWCs are currently working with DWR and other key stakeholders to address the many complex issues undermining the Delta through the proposed DCP, as discussed in Section

6.8.1.1. The proposed new diversion structure in the northern Delta provides alternative intakes in case the Delta is affected by an earthquake, levee failure, or some other catastrophic event that impacts water quality and prevents pumping from the Delta. The DCP would also provide alternative intakes that could be used to minimize harm to endangered and threatened species in the Delta. DWR is working closely with regulatory and natural resource agencies to address regulatory uncertainty and protect the Delta ecosystem using an adaptive management framework based on the best available science. With these benefits, the DCP is expected to significantly alleviate constraints on SWP operation and provide more water supply reliability.

7.1.1.1.2 Water Quality
Until the DCP is constructed and operational, there continues to be water quality concerns associated with transport through the Delta. In 1982, DWR formed the Interagency Delta Health Aspects Monitoring Program to monitor water quality in the Delta and protect human health. The program was renamed the Municipal Water Quality Investigations Program in 1990. From a municipal water supply perspective, water quality issues in the Delta are associated with salinity from seawater intrusion, wastewater effluent discharges, agricultural drainages from the island surfaces, and recreational activities. Water quality issues of specific concern to Zone 7 are:
• Algal byproducts : Parameters of concern include compounds that cause taste -and-odor (T&O) and algal toxins. T&O is primarily a problem in the warmer months, when algal blooms may be present. It can affect supplies from the Delta and from Lake Del Valle (which stores SWP wa ter). Algae produce geosmin and 2 -methylisoborneol, which are key T&O -causing compounds in surface water supply. Algal toxins derived from blue-green algae can also be a concern. Zone 7’s ozonation facilities (installed at DVWTP and Patter son Pass Water Treatment Plant [PPWTP]) effectively treat algal byproducts. Without ozonation, high levels of algal byproducts in both Delta and Lake Del Valle supplies may necessitate temporarily switching to groundwater supplies; blending of sources is also an option depending on the source of algal byproducts and severity.
• Total and dissolved organic carbon (TOC/DOC): Zone 7 treats organic carbon with coagulant and disinfectant chemicals, and therefore higher levels of organic carbon increase costs. In addition, TOC and DOC help form disinfect ion byproducts (DBPs), which are regulated compounds in drinking water. Historically, Zone 7’s WTPs have managed high TOC/DOC by increasing coagulant dosages. However, this operational change results in greater sludge production and limits plant production. T he use of ozone reduces coagulant and chlorine demands, thus reducing typi cal chlorination DBPs; however, formation of ozonation DBPs, such as bromate, will need to be controlled.
• Turbidity: Like TOC/DOC, turbidity affects the amount of chemicals used in treatment and Zone 7’s ability to meet drinking water standards. It can also reduce the production capacities of Zone 7’s WTPs, requiring increased groundwater production under high demands. Coagulant dosages can be adjusted to address high turbidity (which can happen after big storms), but if filters require more frequent backwashing, then production may decrease. • Salinity or Total Dissolved Solids ( TDS): Salinity has significant impacts on SWP operations and the availability of water. To meet the salinity objectives in the Delta, water exports from

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the Delta may be restricted, reducing the amount of water supply available during certain times of the year. Salinity intrusion can be a problem during dry years, when there is insufficient freshwater to repel salinity. Sea level rise due to climate change is also expected to increase salinity in the Delta. Finally, levee breaks due to earthquakes and other factors would result in significant saltwater intrusion from the Bay as water floods affected islands that are below sea level in the Delta.
• Algal blooms: In addition to T&O and the threat of algal toxins, algal blooms can significantly degrade filter performance through clogging. Filter clogging reduces plant production capacities and could require supplemental groundwater use.

As noted above, Zone 7 has state- of-the-art ozonation facilities at the DVWTP and PPWTP. Ozonation improves treatment of T&O, TOC/DOC, turbidity, and algal blooms and significantly increases the surface water system’s reliability.

In 2008, the SBA contractors (Valley Water, ACWD, and Zone 7) developed the SBA Watershed Protection Program to protect water quality once the water from the Delta reaches the SBA. The primary objectives of the SBA Watershed Protection Program include developing a Watershed Management Program for the SBA system, including Lake Del Valle and Bethany Reservoir, and protecting local drinking water and water resources from identified contaminant sources (e.g., septic tanks) for urban, agricultural, recreational, and environmental uses.

Additional information on Water Quality Control Plan for the San Francisco Bay/Sacramento-San Joaquin Delta Estuary (Bay-Delta Plan) is included in the Zone 7 2025 UWMP.

7.1.1.1.3 SBA Conveyance
A limitation of Zone 7’s water supply system is its dependence on the SBA. All of Zone 7’s imported water supplies are conveyed through the Delta and the SBA; Arroyo Valle water is also conveyed through the SBA. Zone 7 has continuously worked with DWR, Valley Water, and ACWD to improve the reliability of the SBA. Between 2003 and 2012, DWR made improvements to the SBA within Zone 7’s service area to increase capacity and improve reliability. The work included building a new pump station (180 cfs) and Dyer reservoir (500 AF) and increasing the canal carrying capacity to 350 cfs. As part of this project, DWR installed an emergency slide gate to maintain service to Zone 7 in the event of a pipeline rupture downstream. Zone 7 will continue coordinating with DWR and the other SBA contractors to improve reliability of the entire SBA system.

A recent possible threat to Zone 7’s primary water supply emerged in 2024 when DWR discovered Golden Mussels in the Delta. Since then, these organisms have proliferated throughout the SWP system as far away as southern California. This species, which is mo re resilient than the previously discovered Zebra Mussel, has the potential to clog water systems by settling and growing in pipes, valves, pumps, gates, canals or any other surface suitable for settling. Individual specimens have been found in the SBA , but colonies have not yet been confirmed. DWR, in collaboration with DFW, is developing a Golden Mussel management plan including chemical injection, UV radiation and physical removal at critical facilities.

Experts have stated that it is unlikely that this invasive species can be fully eradicated, but measures can be taken to minimize their im pact. Zone 7 is carefully monitoring the situation and is taking precautions to avoid disruption to its water supply. Zone 7 is also obtaining guidance from DFW on deve loping a Golden Mussel control plan.

In addition, Zone 7 is pursuing the COLCS project to reduce its reliance on the SBA. This project would allow for access to water stored in the COLs as an alternative local water supply and storage source; water would be pumped to DVWTP for use.

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7.1.1.2 Groundwater
Refer to Section 7.1.2 for constraints on groundwater supplied by Zone 7 and the City.

7.1.1.3 Arroyo Valle and Lake Del Valle
ACWD and Zone 7 both have water rights to divert water from the Arroyo Valle. This water is captured and stored in Lake Del Valle, which is owned and operated by DWR. DWR utilizes Lake Del Valle for flood control, water supply, and recreation. Typically, DWR lowers the lake elevation after Labor Day, allowing Zone 7 and ACWD to put runoff from the Arroyo Valle to beneficial use. In the summer months, lake elevations are raised for recreational purposes. Historically, access to Zone 7’s stored water in Lake Del Valle has not been problematic, unless there is an outage on the Del Valle Branch pipeline. Zone 7 closely coordinates use of Arroyo Valle water with both ACWD and DWR.

Water collected from the local watershed is protected under the SBA Watershed Protection Program Plan.

In general, the water quality of Arroyo Valle runoff is good and does not affect the reliability of this water supply; however, as noted above, T&O can a lso affect supplies from Lake Del Valle. Zone 7 treats T&O using ozonation, although a switch to groundwater supplies is sometimes necessary under excessive levels of T&O compounds. Algal blooms in the lake can also reduce production capacities, though add ing ozonation at DVWTP and PPWTP has significantly reduced the impact.

7.1.1.4 Local Storage
Constraints for Zone 7’s existing local storage options, the Main Basin and Lake Del Valle, are discussed in Sections 7.1.2 and 7.1.1.3, respectively. The COLCS project, once constructed, will increase Zone 7’s local storage. Currently, Zone 7 is planning to construct the project using the two lakes that are available, Lake I and Cope Lake. These lakes will provide additional local storage in the near term. However, the transfer dates for the remaining lakes are uncertain, as the timing of gravel mining operations and reclamation is not yet known, and a full transition may extend through 2 060. Zone 7 continues to work closely with mining companies and quarry operators to coordinate planning efforts. Through this project, Zone 7 can enhance its use of the available lakes during the interim period before all lakes are transferred to Zone 7’s ownership.

7.1.1.5 Non-Local Storage
Access to banked water in Semitropic and Cawelo , which are both downstream of Zone 7 , requires exchange(s) with other SWCs located south of Kern County (e.g., Metropolitan Water District of Southern California). There must be sufficient water flowing through the Delta and California Aqueduct system to facilitate these exchanges, which could be challenging during a drought. Furthermore, the banked water must be conveyed through the Delta, rendering this supply susceptible to the Delta disruptions described in Section 7.1.1.1.1.

During the 2020-2022 drought, access to banked water became uncertain because of the historically low Table A allocation (leading to minimal amounts of water moving through the SWP) and the potential cessation of pumping in the Delta to control salinity in trusion. DWR was able to manage salinity so that Delta pumping could continue, and with coordination among stakeholders including Zone 7, DWR prioritized the delivery of banked water to Zone 7 and other SBA contractors. Ultimately, despite severe drought conditions in 2021 and 2022 and historic low 5% SWP allocation, Zone 7 was able to successfully recover 20,000 AF from both groundwater banks. Between 2020 and 2022, Zone 7 recovered approximately 21,000 AF from non-local storage.

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Zone 7 will continue to coordinate closely with DWR, other SWCs, Semitropic, and Cawelo to ensure the future reliability of the banked water supplies. Zone 7 will also continue to pursue new non -local groundwater banking opportunities.

Additionally, some of Semitropic’s wells are contaminated with arsenic and t richloropropane. This is currently being managed through treatment before the affected groundwater is pumped into the California Aqueduct. The DWR Facilitation Group established arsenic criteria for this “pump-in” to mitigate any impacts to the downstream SWC s. Semitropic and the banking partners have developed a coordination process for discussing arsenic treatment. While the presence of arsenic in the Semitropic groundwater bank m ay increase the cost of this water storage option, it is not likely to affect overall reliability levels.

7.1.1.6 Water Exchanges and Transfers
Transfer water can be used to supplement Zone 7’s existing water supplies. Advantages of water transfers include: 1) they can be pursued as needed in any given year and 2) they do not require new infrastructure.

Annual water transfers are subject to water market conditions. Generally, water transfers are less expensive in wet years when extra water is available and more expensive in dry years when extra water is scarce. One strategy Zone 7 could utilize is purchasing more water during wet years at a lower c ost to store for later use in dry years. Zone 7 continues to pursue and evaluate water transfer opportunities in the Bay Area and statewide.

7.1.2 Groundwater
Section 6.2 details the issues affecting Zone 7’s use of the Main Basin, specifically water quality management and prevention of overdraft.

Zone 7 is actively implementing its SNMP. Basin salt levels are being addressed primarily through groundwater pumping and demineralization using the MGDP in the Mocho Wellfield. Simultaneously, the Basin is being recharged with water containing low salt concentrations. The facility allows for the export of concentrated minerals or salts from the Main Basin while improving the water quality of treated water.

The MGDP is expected to be offline from 2026 to 2028 while a new PFAS treatment facility is constructed at the Mocho Wellfield. Zone 7 will continue its Basin management under the SNMP while the facility is down.

PFAS have been detected above the EPA ’s proposed MCLs and the Response and Notification Levels established by DDW in several of Zone 7’s wellfields. Zone 7 is managing PFAS under its PFAS management strategy by monitoring contaminant levels, blending and treating groundwater, and diversifying groundwater resources. Zone 7 is planning a dedicated Mocho PFAS Treatment P lant at the existing Mocho Well 3 facility. This facility, which will be Zone 7’s third PFAS treatment project following the Stoneridge and COLs PFAS plants, will use ion exchange technology to remove PFAS from Mocho Wellfield groundwater and restore production reliability. Planning, environmental review, and funding efforts are underway, with design anticipated in 2026 and construction expected to follow. Zone 7 continues to meet water quality standards and is currently meeting the PFAS MCLs ahead of the EPA’s deadline.

While Zone 7 has several groundwater wells with naturally occurring h exavalent chromium (Cr(VI)) concentrations, the levels have been below the current MCL, 50 micrograms per liter (μg/L) MCL. On October 1, 2024, the SWRCB reduced the Cr(VI) MCL to 10 μg/L, effect ive October 1, 2026. Zone 7 has detected Cr(VI) at levels n e a r t h e u p c o m i n g 1 0 μ g / L M C L at several wells and continues to monitor groundwater for Cr(VI) and research treatment options if necessary for elevated concentrations. Zone 7 is currently delivering treated groundwater with Cr(VI) concentrations below the upcoming 10 μg/L MCL.

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Zone 7 continues to study the groundwater basin and utilize new tools (e.g., a recently improved groundwater model) to better understand the volumes of groundwater extraction possible under various Basin conditions while maintaining groundwater elevations above the historic -low groundwater elevations that have been reached in certain portions of the Main Basin (“historic lows”). Zone 7 also plans to augment its ability to recharge the Main Basin (e.g., through the COLs) to increase local storage and allow f or more pumping when necessary. Recharging the Main Basin will improve both water supply reliability and salt management. Zone 7 is evaluating opportunities to construct and operate an additional demineralization facility to continue to decrease the salt content of the Main Basin.

Finally, the City and Zone 7 are advancing the Joint Groundwater Wells Study to evaluate the feasibility of adding new municipal production wells in the Bernal Subbasin. The goal of these additional wells is to increase groundwater production capacity, enhance drought resiliency, and pro vide greater operational flexibility in managing groundwater sustainability during extended droughts or surface water supply constraints.

The City has a GPQ of 3,500 AFY from the Main Basin, which comprises approximately 20% of its water supply. The City may also carry -over any unused portion of its annual GPQ up to a total of 700 AF. The successful completion of the Joint Groundwater Wells project will allow the City to once again pump its full GPQ and reduce the risk of future PFAS contamination. Zone 7 established GPQs for the Main Basin based on the natural sustainable yield. As such, the City’s groundwater supply from its GPQ is considered reliable under all hydrologic conditions.

7.1.3 Recycled Water
The recycled water that the City receives comes from DSRSD’s RWTF and the LWRP, which are described in Section 6.5.2. Both facilities produce Title 22 disinfected tertiary recycled water. The City anticipates no significant changes to the land uses in either DSRSD’s or Livermore’s wastewater service area; therefore, it does not anticipate any changes to the quality of the wastewater effluent used to produce recycled water. The City does not expect recycled water quality issues to impact its ability to reliably deliver recycled water to its customers.

On March 25, 2019, DERWA found that it cannot meet the combined peak demands and projected demands of its member agencies (DSRSD and EBMUD) and its retailer, Pleasanton . DERWA approved Resolution No. 19 -3 (Appendix E) requesting that its member agencies take action to reduce recycled water demands and implement a connection moratorium. As discussed in Section s 6.5.2 and 6.5.4, the City maintains the first right to use the secondary effluent produced from wastewater originating from the City’s wastewater collection system for recycling. As of 2023, the City also owns the treatment capacity rights of up to 2.7 MGD of recycled water from DSRSD’s RWTF While the City’s recycled water supply is limited by the secondary wastewater effluent from its service area and the treatment capacity of DSRSD’s RTWF, this supply is expected to meet the City’s current and projected recycled water demands.

7.1.4 Water Quality

Impaired water quality also has the potential to affect water supply reliability . Pleasanton has and will continue to meet all state and federal water quality regulations. All drinking water standards are set by the EPA under the authorization of the Federal Safe Drinking Water Act of 1974. In California, the SWRCB’s  CWC §10634
The plan shall include information, to the extent practicable, relating to the quality of existing sources of water available to the supplier over the same five-year increments as described in subdivision (a) of Section 10631, and the manner in which water quality affects water management strategies and supply reliability.

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DDW can either adopt the EPA standards or set more stringent standards, which are then codified in Title 22 of the CCR. There are two general types of drinking water standards:
• Primary MCLs: health protective standards established using a very conservative risk -based approach for each constituent that considers potential health effects, detectability and treatability, and treatment costs. PWSs may not serve water that exceeds Primary MCLs for any constituent.
• Secondary MCLs: standards based on the aesthetic qualities of the water such as taste, odor, color, and certain mineral content, and are considered limits for constituents that may affect consumer acceptance of the water.

Pleasanton and Zone 7 routinely monitor water quality in wells and treatment facilities, and the City routinely monitors water quality in the distribution system to ensure that water delivered to customers meets these drinking water standards. The results of this testing are reported to DDW following each test and are summarized annually in Water Quality Reports (also known as “Consumer Confidence Reports”), which are provided to customers electronically/ by mail and made available on Pleasanton’s website:
https://www.cityofpleasantonca.gov/our-government/pleasanton-water/water-quality-safety/.

Although there is the potential for some regulated constituents to be present in source water, as documented in the Water Quality Reports, Pleasanton and Zone 7 ’s monitoring, management, and treatment result in delivering high quality drinking water that meets all drinking water standards.

Pleasanton and Zone 7 tracks changes in constituent concentrations to proactively address water quality issues before they impact supply reliability. If water quality constituents are detected in source water at concentrations requiring treatment, Pleasanton and Zone 7 can implement appropriate treatment.

Further, as part of the siting process for all new wells, Pleasanton evaluates the presence of groundwater contamination and avoids placing wells in areas of known contamination.

Additional water quality discussion specifically on purchased or imported water is provided in Section

7.1.1.1.2 and on groundwater in Section 7.1.2. Given Pleasanton and Zone 7’s proactive monitoring and management of water quality in its source water supplies, water quality is not expected to impact the reliability of Pleasanton and Zone’s available supplies within the planning horizon (i.e., through 2045).

7.1.5 Climate Change

Section 6.10.1 provides a summary of potential climate change impacts on supplies that Zone 7 has considered when evaluating water supply availability and reliability. As discussed, Zone 7 is actively working to further quantify and consider future climate change impacts as part of its ongoing supply and operations planning. Zone 7’s 2025 UWMP provides additional details on how climate change effects were incorporated into the reliability modeling of Zone 7’s SWP supplies and discusses DWR efforts to reduce climate change impacts on the SWP.
 CWC §10631 (b) (1)
…For each source of water supply, consider any information pertinent to the reliability analysis conducted pursuant to Section 10635, including changes in supply due to climate change.

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7.2 Reliability by Type of Year

The City’s potable water supply reliability and vulnerability are directly related to seasonal and climatic shortages that impact Zone 7’s water supplies. The quantity available from different supply sources varies annually depending on hydrologic conditions. Consequently, Zone 7 reviewed historical data and developed a projected yield for each water supply source (including the Main Basin) under three conditions: (1) normal water year, (2) single dry year, and (3) five-consecutive-year drought. Each condition is defined as follows:
• A normal hydrologic year represents the water supplies available under normal conditions; Zone 7 uses the median outcome at demand year 2045 based on the index sequential method modeling; • A single dry year represents the lowest available water supply, which was chosen to be the driest year in the historical record, 1977; and
• A five-consecutive year drought represents the driest five -year period in the historical record.

Selection of the design drought corresponds with the driest five- year sequence on record, 1987-1991.

Zone 7’s water supply reliability is used to represent the City’s available supplies during the above hydrologic conditions. In its 2025 UWMP, Zone 7 provides a basis of water year data table (DWR Table 7-1) for each of its water supply sources. For simplicity, this plan leaves DWR Table 7 -1 blank (Table 7-1) and summarizes Zone 7’s base year information and water supply availability in Table 7-2 and Table 7-3, respectively.

Table 7-1 Basis of Water Year Data (Reliability Assessment) (DWR Table 7-1) Available Supplies if Year Type Repeats

☒
Checked box indicates quantification
of available supplies is not
compatible with this table and is
provided elsewhere in the UWMP.

Location:

Table 7-2 and Table 7-3

 CWC §10631 (b)
Identify and quantify, to the extent practicable, the existing and planned sources of water available to the supplier over the same five- year increments described in subdivision (a), providing supporting and related information, including all of the following:
 CWC §10631 (b)(1)
A detailed discussion of anticipated supply availability under a normal water year, single dry year, and droughts lasting at least five years, as well as more frequent and severe periods of drought, as described in the drought risk assessment. For each source of water supply, consider any information pertinent to the reliability analysis conducted pursuant to Section 10635, including changes in supply due to climate change.  CWC §10635 (a)
Every urban water supplier shall include, as part of its urban water management plan, an assessment of the reliability of its water service to its customers during normal, dry, and multiple dry water years. This water supply and demand assessment shall compare the total water supply sources available to the water supplier with the long-term total projected water use over the next 20 years, in five- year increments, for a normal water year, a single dry water year, and a drought lasting five consecutive water years. The water service reliability assessment shall be based upon the information compiled pursuant to Section 10631, including available data from state, regional, or local agency population projections within the service area of the urban water suppli er.

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Table 7-2 Basis of Water Year Data for Zone 7 Supplies
Water Source (a) Normal Year Single
Dry Year
Multi-Year Drought
Year 1 Year 2 Year 3 Year 4 Year 5
SWP – Table A 1922-2021
Median 1977 1987 1988 1989 1990 1991
SWP – Carryover 1922-2021
Median 1977 1987 1988 1989 1990 1991
Water Transfers 1922-2021
Median 1977 1987 1988 1989 1990 1991
Arroyo Valle 1922-2021
Median 1977 1987 1988 1989 1990 1991
Sites Reservoir 1922-2021
Median 1977 1987 1988 1989 1990 1991
From Storage
Main Basin 1922-2021
Median 1977 1987 1988 1989 1990 1991
Non-Local Storage
Programs (b)
1922-2021
Median 1977 1987 1988 1989 1990 1991
Chain of Lakes 1922-2021
Median 1977 1987 1988 1989 1990 1991
NOTES:
(a) This table is based on Zone 7’s 2025 UWMP (Section 7.2 and Tables 7-1 to 7-9), where the reliability of each water supply source is discussed.
(b) Non-local storage programs include storage in Semitropic and Cawelo, as well as other future programs.

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Table 7-3 Zone 7’s Water Supply Volume Available
Water Source(a)
Normal
Year
Single
Dry Year
Multi-Year Drought
Year 1 Year 2 Year 3 Year 4 Year 5
(AF) (AF) (AF) (AF) (AF) (AF) (AF)
SWP – Table A (b) 36,574 1,229 9,303 7,961 32,793 4,897 5,185 SWP – Carryover (c) 10,000 10,000 10,000 8,858 8,864 6,802 0 Water Transfers (d) 0 0 0 0 0 0 0
Arroyo Valle 4,000 4,000 4,000 209 258 60 4,381
Sites Reservoir(e) 2,185 10,511 8,909 12,085 1,834 214 755 From Storage
Main Basin(f) 30,000 30,000 30,000 30,000 30,000 30,000 24,343 Non-Local Storage
Programs(g) 19,741 16,600 16,600 16,600 19,268 16,600 9,448 Chain of Lakes(h) 11,700 11,700 11,700 14,586 13,868 0 0 Total 114,200 84,040 90,512 90,299 106,885 58,573 44,112 Percent of Normal 100% 74% 79% 79% 94% 51% 39%
NOTES:
(a) This table is based on Zone 7’s 2025 UWMP (Section 7.2 and Tables 7-1 to 7-9), where the reliability of each water supply source is discussed.
(b) Based on DWR’s modeling of SWP availability in the Draft 2025 DCR. Zone 7 applied the hydrologic time series from the DCR’s 2043 50% level-of-concern to model the reliability of its Table A allocations. (c) Zone 7’s operational target is typically 10,000 AF for normal years. (d) Beyond 2035, Zone 7 assumes that zero transfers will be available, and therefore, the values in this table are zero.
(e) Supplies from Sites Reservoir are assumed to be available by 2035. (f) These are estimated available supplies, not necessarily what would be pumped. Zone 7’s typical operational target is around 5,000 AFY for normal years.
(g) Includes available supplies from Semitropic and Cawelo Water Districts, as well as other future supply programs. Zone 7 does not typically use these available supplies during normal years. (h) The Chain of Lakes Conveyance System , which provides access to water stored in the Chain of Lakes (COLs), is assumed to be completed around 20 35. During the five -year drought, the operational storage in COLs is depleted by years four and five.

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7.3 Supply and Demand Assessment

This section presents comparisons of projected water supplies and demands from 2025 through 2045 under the following hydrologic conditions: normal year, single dry year, and five consecutive dry years.

The City’s projected demands are presented in Section 4, while supply sources are described in Section 6.

Unless otherwise noted, it is assumed demand projections will not change with hydrologic conditions. In other words, demands are assumed to be unconstrained unless they are limited by available supplies.

7.3.1 Normal Year Supply and Demand Assessment
The City’s normal year supplies include:
• Purchased supplies from Zone 7
• 3,500 AFY of groundwater pumped by the City from the Main Basin • Up to 1,340 AFY of recycled water
Based on the reliability assessment in the 2025 UWMP, Zone 7 predicts they can meet all retailer demands during a normal year. Therefore, Table 7-4 shows that in normal years the City’s supplies are adequate to meet projected demands. The supply and demand totals are consistent with those in Table 6-11 and Table 4-5, respectively.

Table 7-4 Normal Year Supply and Demand Comparison (DWR Table 7-2) 2030 2035 2040 2045
(AF) (AF) (AF) (AF)
Supply totals
(from DWR Table 6-9) 16,401 17,288 18,178 19,172
Use totals
(from DWR Table 4-2) 16,401 17,288 18,178 19,172
Surplus/(shortfall) 0 0 0 0

7.3.2 Single-Dry Year Supply and Demand Assessment
In Chapter 7 of its 2025 UWMP, Zone 7 has indicated it can meet retailer demands during single dry years through 2045. Therefore, Zone 7 supplies to the City are assumed to equal the City’s projected potable water demands after accounting for the City’s GP Q. Recycled water supply is assumed to be unaffected by the dry conditions. Table 7-5 shows that the City’s supplies are adequate to meet projected demands during single dry years.
 CWC §10635(a)
Every urban water supplier shall include, as part of its urban water management plan, an assessment of the reliability of its water service to its customers during normal, dry, and multiple dry water years. This water supply and demand assessment shall compare the total water supply sources available to the water supplier with the long-term total projected water use over the next 20 years, in five- year increments, for a normal water year, a single dry water year, and a drought lasting five consecutive water years. The water service reliability assessment shall be based upon the information compiled pursuant to Section 10631, including available data from state, regional, or local agency population projections within the service area of the urban water suppli er.

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Table 7-5 Single Dry Year Supply and Demand Comparison – District Total (DWR Table 7-3) 2030 2035 2040 2045
(AF) (AF) (AF) (AF)
Supply totals 16,401 17,288 18,178 19,172
Use totals 16,401 17,288 18,178 19,172
Surplus/(shortfall) 0 0 0 0

7.3.3 Multiple Dry Year Supply and Demand Assessment
Zone 7’s 2025 UWMP indicates the ability to meet retailer demands during five-year droughts beginning in 2030, 2035, and 2040. However, beginning in 2045, Zone 7 is projecting a 14% shortfall for the fifth year of a five-year drought. Because the City anticipates the ability to access its full GPQ of 3,500 AFY will be restored through the Joint Groundwater Project, the assessment of future water supply reliability assumes that the City will rely upon groundwater to meet 3,500 AFY of its potable demands in each year of a five- year drought through 2045 and that the remaining balance will be met through Zone 7 supply purchases.

For the fifth year of a five-year drought in 2045, the projected 14% reduction in Zone 7 supply availability translates to a 10% shortfall for the City.

In the event of a shortfall at this level, the City anticipates enacting its WSCP at Shortage Level 2 ( see Appendix D and Section 8), which is anticipated to fill the gap as shown in Table 7-6.

Table 7-6 Five Consecutive Dry Years Supply and Demand Comparison (DWR Table 7-4) Volume (AF) a
2030 2035 2040 2045
First year
Supply totals 16,401 17,288 18,178 19,172
Use totals 16,401 17,288 18,178 19,172
Surplus/(shortfall) 0 0 0 0
Second year
Supply totals 16,401 17,288 18,178 19,172
Use totals 16,401 17,288 18,178 19,172
Surplus/(shortfall) 0 0 0 0
Third year
Supply totals 16,401 17,288 18,178 19,172
Use totals 16,401 17,288 18,178 19,172
Surplus/(shortfall) 0 0 0 0
Fourth year
Supply totals 16,401 17,288 18,178 19,172
Use totals 16,401 17,288 18,178 19,172
Surplus/(shortfall) 0 0 0 0
Fifth year
Supply totals 16,401 17,288 18,178 17,212
Use totals 16,401 17,288 18,178 19,172
Surplus/(shortfall) 0 0 0 (1,960)
Planned WSCP Actions
WSCP - supply augmentation benefit 0 0 0 0
WSCP - use reduction savings benefit 0 0 0 1,960
Revised Surplus/(shortfall) 0 0 0 0
NOTE:

While this reliability assessment is prepared based on the prescribed approach in DWR’s 2025 Guidebook, the City anticipates that it would implement WSCP in earlier years of drought.

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7.4 Water Supply Management Tools and Options

Pleasanton and Zone 7 coordinate to increase regional supply reliability and reduce reliance on water imports. Pleasanton focuses on demand reduction, specifically prioritizing water conservation and encouraging recycled water use. Zone 7 promotes regional supply reliability and reduced reliance on water imports by:
• Pursuing new water supply projects such as the COLCS and Sites Reservoir, which will reduce the need for imported water purchases during dry years; • Evaluating and pursuing new water supply options, including right-sizing water supply and storage options and studying the potential for potable reuse as a water supply; • Supporting the continued use of recycled water for irrigation; • Working closely with its retailers to implement an active conservation program; and • Optimizing and expanding local storage, such as the COLCS.

As part of its existing CIP, Zone 7 is planning to invest in a diverse set of projects to support long -term water supply reliability. Zone 7’s CIP includes a regional wells project to expand the groundwater production system, investment in Sites Reservoir, and investment in local storage via the COLCS project, and continued study of the potential for potable reuse in the region.

In addition, Zone 7 is a member of the Bay Area Regional Reliability (BARR) partnership, which brings together eight Bay Area water agencies to improve regional water supply reliability. In addition to Zone 7, these agencies include: ACWD, EBMUD, SFPUC, Bay Area Water Supply and Conservation Agency, Contra Costa Water District, Marin Municipal Water District, and Valley Water. The BARR partners have agreed to work cooperatively to address water supply reliability concerns and drought preparedness on a mutually beneficial and regionally focused basis. Near- and long-term joint water supply reliability projects may be evaluated through BARR, such as use of the capacity of existing facilities, changes to infrastructure (including new interties, recycled water, water conservation, expanded treatment, regional desalination, and water transfers and exchanges), and other projects or institutional arrangements that encourage a regional approach to achieving water supply reliability in the Bay Area.  CWC §10620 (f)
An urban water supplier shall describe in the plan water management tools and options used by that entity that will maximize resources and minimize the need to import water from other regions.

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7.5 Drought Risk Assessment

In addition to the long- term water service reliability assessment presented above, the DRA evaluates Pleasanton’s supply risks under a severe drought period lasting for the next five consecutive years after the assessment is completed (i.e., 2026-2030). The DRA is intended to inform the DMMs and water supply projects and programs to be included in the UWMP (Section 9). Suppliers may conduct an interim update or updates to this DRA within the five-year cycle of its UWMP update (i.e., before the 2030 UWMP).

7.5.1 Data, Methods, and Basis for Water Shortage Condition Similar to the reliability analysis described in Section 7.2, Pleasanton’s DRA is based on Zone 7’s DRA due to Pleasanton’s reliance on water purchases from Zone 7.

As presented in Section 7 of Zone 7’s 2025 UWMP, the DRA assumes 30%, 10%, 41%, 6%, and 6% Table A allocations for 2026-2030, respectively. Data for 2026 reflects projected water year supply availability based on currently available data. Data for 2027-2030 reflect the last four years of the multiple -dry year scenario previously discussed (1988-1991). Zone 7’s supply projections are based on existing facilities and the expected availability of supplies from various sources given the constraints previously described . A five-year modeling analysis using 2025 conditions as the initial baseline was conducted. This approach accounts for differences in demand levels and the availability and timing of supply sources during the 2026-2030 planning period.

7.5.2 Drought Risk Assessment Individual Water Source Reliability Table 7-7 summarizes Zone 7’s available supplies for each year of the DRA. In addition to potable water supplies from Zone 7, the City is expected to produce 3,500 AFY of groundwater in each year of the drought. For the DRA, recycled water supplies are assumed to b e sufficient to meet recycled water demands.
 CWC §10635(b)
Every urban water supplier shall include, as part of its urban water management plan, a drought risk assessment for its water service to its customers as part of information considered in developing the demand management measures and water supply projects and programs to be included in the urban water management plan. The urban water supplier may conduct an interim update or updates to this drought risk assessment within the five- year cycle of its urban water management plan update. The drought risk assessment shall include each of the following:
(1) 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 water years, starting from the year following when the assessment is conducted. (2) A determination of the reliability of each source of supply under a variety of water shortage conditions. This may include a determination that a particular source of water supply is fully reliable under most, if not all, conditions.
(3) A comparison of the total water supply sources available to the water supplier with the total projected water use for the drought period.
(4) 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.

Section 7 2025 Urban Water Management Plan
Water Supply Reliability Assessment City of Pleasanton
Public Draft | May 2026
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Table 7-7 Projected Zone 7 Supplies for Drought Risk Assessment Water Source
Available Supply (AFY)
2026 2027 2028 2029 2030
Equivalent Hydrologic Year Actual 1988 1989 1990 1991
SWP Table A 24,186 7,961 32,793 4,897 5,185
SWP Carryover 14,000 8,441 9,270 9,098 5,946
Water Transfers 1,000 3,000 0 3,000 3,000
Arroyo Valle 5,000 2,672 4,934 2,876 3,014
Chain of Lakes 0 0 0 0 0
Main Basin (Local
Groundwater) 30,000 30,000 30,000 30,000 30,000
Non-Local Storage Programs 13,379 19,287 21,955 19,287 19,287 Sites Reservoir 0 0 0 0 0
Total 87,565 71,361 98,952 69,157 66,431

7.5.3 Drought Risk Assessment Total Water Supply and Use Comparison In Chapter 7 of its 202 5 UWMP, Zone 7 has indicated it can meet retailer demands during a five -year drought beginning in 2026. Therefore, Zone 7 supplies are assumed to equal the City’s projected potable water demands after accounting for the City’s GPQ (3,500 AFY). Recycled water supply is assumed to be unaffected by dry conditions and therefore recycled water supply is also equal to demand. Demands for 2026-2029 are linearly interpolated from 2025 actual use to 2030 projected uses.

As shown in Table 7-8, during a five-year drought beginning in 2026, the City’s supplies are adequate to meet projected demands through 20 30, even without water conservation. However, the City may still prioritize water conservation under such drought conditions to reduce demand and conserve supply for potentially future dry years.

Section 7 2025 Urban Water Management Plan
Water Supply Reliability Assessment City of Pleasanton
Public Draft | May 2026
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Table 7-8 Five-Year Drought Risk Assessment Tables (DWR Table 7-5) 2026 Total (AFY)
Total Water Use 14,269
Total Supplies 14,269
Surplus/Shortfall without WSCP Action 0
2027 Total (AFY)
Total Water Use 14,802
Total Supplies 14,802
Surplus/Shortfall without WSCP Action 0
2028 Total (AFY)
Total Water Use 15,335
Total Supplies 15,335
Surplus/Shortfall without WSCP Action 0
2029 Total (AFY)
Total Water Use 15,868
Total Supplies 15,868
Surplus/Shortfall without WSCP Action 0
2030 Total (AFY)
Total Water Use 16,401
Total Supplies 16,401
Surplus/Shortfall without WSCP Action 0

Section 8 2025 Urban Water Management Plan
Water Shortage Contingency Planning City of Pleasanton
Public Draft | May 2026
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8 WATER SHORTAGE CONTINGENCY PLANNING

The City’s updated WSCP is appended to this Plan as Appendix D. The WSCP serves as a standalone document to be engaged in the case of a water shortage event, such as a drought or supply interruption, and defines specific policies and actions that will be implemented at various shortage level scenarios. The primary objective of the WSCP is to ens ure that Pleasanton has in place the necessary resources and management responses needed to protect health and human safety, minimize economic disruption, and preserve environmental and community assets during water supply shortages and interruptions.

Consistent with CWC §10632, the WSCP utilizes the six standard levels to address shortage conditions ranging from up to 10% to greater than 50% shortage, identifies a suite of demand mitigation measures for Pleasanton to implement at each level, and identifies procedures for Pleasanton to annually assess whether or not a water shortage is likely to occur in the coming year, among other things.

A summary of the key elements of the WSCP including water shortage levels and demand -reduction actions is shown in Table 8-1, Table 8-2, and Table 8-3. Additional details are provided in Appendix D.

Table 8-1 Cross-reference for Standard vs Supplier Shortage Levels (DWR Table 8-1) ☒
Checked box indicates the supplier uses the standard six levels of water shortage (and supplier will not complete this table).
 CWC §10640
(a) Every urban water supplier required to prepare a plan pursuant to this part shall prepare its plan pursuant to Article 2 (commencing with Section 10630). The supplier shall likewise periodically review the plan as required by Section 10621, and any amendments or changes required as a result of that review shall be adopted pursuant to this article.
(b) Every urban water supplier required to prepare a water shortage contingency plan shall prepare a water shortage contingency plan pursuant to Section 10632. The supplier shall likewise periodically review the water shortage contingency plan as required by paragraph (10) of subdivision (a) of Section 10632 and any amendments or changes required as a result of that review shall be adopted pursuant to this article.

Section 8 2025 Urban Water Management Plan
Water Shortage Contingency Planning City of Pleasanton
Public Draft | May 2026
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Table 8-2 Supply Augmentation and Other Actions (DWR Table 8-2) Yes Is the Supplier completing this table using the standard six levels? Shortage
Level
Supply Augmentation Methods
and Other Actions by Water
Supplier
How much is this
going to reduce the
shortage gap?
Additional Explanation or
Reference
1 No action taken
2 No action taken
3 No action taken
4 No action taken
5 No action taken
6 Stored emergency supply Up to the shortage
gap
Request for the expansion of
the groundwater pumping
quota from Zone 7

Section 8 2025 Urban Water Management Plan
Water Shortage Contingency Planning City of Pleasanton
Public Draft | May 2026
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Table 8-3 Demand Reduction Actions (DWR Table 8-3)
Yes Is the Supplier completing this table using the standard six levels? (yes/no) Shortage
Level
Demand Reduction
Actions
How much is this going to
reduce the shortage gap? Additional Explanation or Reference (OPTIONAL) Volume or
Percentage
Shortage Gap
Reduction
Value
1 Landscape - Restrict or
prohibit runoff from
landscape irrigation
Percentage 15-20%
PMC 9.30.080 A.1, 2, 6, 9, 10, 13. - Prohibit Irrigation with Potable Water in a Manner that causes Runoff (including prohibition of irrigation outside of the hours 9pm - 6 am or during and 48 hours after measurable rainfall) 1 Other - Prohibit use of
potable water for washing
hard surfaces
Percentage <1% PMC 9.30.080 A.3. - Prohibit Use of Potable Water to Wash Sidewalks and Driveways; Prohibit the Use of Potable Water for Street Washing 1 Other - Require automatic
shut of hoses Percentage <1% PMC 9.30.080 A.4. - Require Shut-Off Nozzles on Hoses for Vehicle Washing 1 Other - Customers must
repair leaks, breaks, and
malfunctions in a timely
manner
Percentage <1% PMC 9.30.080 A.5. - Require Repair of all Leaks within 24 hours 1 CII - Restaurants may only
serve water upon request Percentage <1% PMC 9.30.080 A.7. - Prohibit Serving Drinking Water other than upon Request in Eating or Drinking Establishments
1 CII - Lodging establishment
must offer opt out of linen
service
Percentage <1% PMC 9.30.080 A.8. - Provide Linen Service Opt Out Options 1 Pools and Spas - Require
covers for pools and spas Percentage <1% PMC 9.30.080 A.11. - Require Pool Covers 1 Water Features - Restrict
water use for decorative
water features, such as
fountains
Percentage <1% PMC 9.30.080 A.12. - Prohibit Potable Water Use for Decorative Water Features that do not Recirculate Water
1 Expand Public Information
Campaign Percentage <1%
Agency Action - Gardening Workshops; Establish Drought Hotline; School Education Program; Media Campaign, Newspaper Articles, Website; Promote Water Conservation / Rebate Programs; Water Efficiency Workshops, Public Events; Water Bill Inserts; Home or Mobile Water Use Reports

Section 8 2025 Urban Water Management Plan
Water Shortage Contingency Planning City of Pleasanton
Public Draft | May 2026
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Yes Is the Supplier completing this table using the standard six levels? (yes/no) Shortage
Level
Demand Reduction
Actions
How much is this going to
reduce the shortage gap? Additional Explanation or Reference (OPTIONAL) Volume or
Percentage
Shortage Gap
Reduction
Value
1 Adjust Customer Billing Percentage <1% Agency Action - Move to Monthly Metering / Billing 1 Reduce System Water Loss Percentage 0-2%
Agency Action - Reduce Distribution System Pressures; Promote / Expand Use of Recycled Water; Audit and Reduce System Water Loss; Establish Retrofit on Resale Ordinance
2 Landscape - Other
landscape restriction or
prohibition
Percentage <1%
PMC 9.30.080 B.2. - Outdoor irrigation of lawn and ornamental landscaping limits (one day / week November-February; no more than three non- consecutive days per week March-October).
2 Expand Public Information
Campaign (Enhanced) Percentage <1% PMC 9.30.080 B.3. & Agency Action - Commercial customer requirements for conservation messaging and expanded public education program 2 Other - Prohibit use of
potable water for
construction activities
Percentage <1% PMC 9.30.080 A.4. - Prohibit use of potable water for construction activities 3 Landscape - Limit landscape
irrigation to specific days Percentage 0-5%
PMC 9.30.080 C.2. - Outdoor irrigation of lawn and ornamental landscaping shall be limited to one day per week November through February, and no more than two non-consecutive days per week March through October. 3 CII - Commercial kitchens
required to use pre-rinse
spray valves
Percentage <1% PMC 9.30.080 C.3. - Restaurant kitchens shall be equipped with low-flow rinse nozzles.
3 Decrease Line Flushing Percentage <1% Agency Action - Decrease Frequency and Length of Line Flushing 3 Implement or Modify
Drought Rate Structure or
Surcharge
Percentage 0-5% Agency Action - Implement Drought Rate Structure 4 Other - Prohibit vehicle
washing except at facilities
using recycled or
recirculating water
Percentage <1% PMC 9.30.080 D.2. - Prohibit Vehicle Washing Except with Recycled Water; Wash Car at Facility that Recycles the Water

Section 8 2025 Urban Water Management Plan
Water Shortage Contingency Planning City of Pleasanton
Public Draft | May 2026
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Yes Is the Supplier completing this table using the standard six levels? (yes/no) Shortage
Level
Demand Reduction
Actions
How much is this going to
reduce the shortage gap? Additional Explanation or Reference (OPTIONAL) Volume or
Percentage
Shortage Gap
Reduction
Value
4 Landscape - Limit landscape
irrigation to specific days Percentage 0-5%
PMC 9.30.080 D.3. - Outdoor watering restrictions for all customers. Single- family residential: hand-watering using a hose with a positive shut-off nozzle, drip, or subsurface irrigation on two non-consecutive days per week. All other customers (excluding certain industries): hand-watering using a hose with a positive shut-off nozzle, drip, or subsurface irrigation to two non-consecutive weekdays; specified as Mondays and Thursdays. Commercial nurseries, public sports fields, golf courses, and other water-dependent industries: as approved by the Agency Director.
4 Offer Water Use Surveys Percentage <1%
Agency Action - Conduct CII Surveys Targeting High Water Users; Conduct Irrigation Account Surveys; Conduct Water Use Surveys Targeting High Water Users
5 Other water feature or
swimming pool restriction Percentage <1% PMC 9.30.080 E.2. - Prohibit Filling of Pools 5 Landscape - Prohibit certain
types of landscape
irrigation
Percentage <1% PMC 9.30.080 E.3. - Prohibit use of potable water for decorative ponds, basins, lakes, waterways, and fountains.
6 Landscape - Prohibit certain
types of landscape
irrigation

Percentage 0-5%
The irrigation of turf or lawn using potable water is prohibited. All water customers, with the exception of commercial nurseries, golf courses, sport fields, and other water dependent industries, shall be limited in the use of all other non-lawn area watering to hand-watering from a container of less than five-gallon capacity on no more than two days per week. The aforementioned water dependent industries shall work with city staff under the direction of the director to develop an approved irrigation schedule. 6 Other Percentage <1% Laundromats are prohibited from using non-efficient washing machines.

NOTES:

Actions listed in PMC §9.30.100 are listed by the closest available demand reduction action in the DWR reporting table dropdown list.

Section 9 2025 Urban Water Management Plan
Demand Management Measures City of Pleasanton
Public Draft | May 2026
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9 DEMAND MANAGEMENT MEASURES

Pleasanton implements DMMs to sustainably manage its water resources. Implementing DMMs can help improve water service reliability and help meet City and State water conservation goals. This section describes the City’s historical and existing water conservation program, status of DMMs, and projected future implementation of water conservation measures.

Pleasanton has long been committed to reducing the demand for potable water through conservation and has implemented a recycled water program to offset potable water demands. The City’s customers have responded positively to these conservation programs. In this section , narrative descriptions addressing the nature and extent of each DMM implemented over the past five years (20 21-2025) are provided. Planned or continued implementation of each of the DMMs are also discussed.

9.1 Demand Management Measures for Retail Suppliers
Pleasanton centrally administers its conservation programs. For purposes of this section, these programs have been grouped in accordance with the DMM categories in CWC §10631(e). These categories are:
(i) Water waste prevention ordinances
(ii) Metering
(iii) Conservation pricing
(iv) Public education and outreach
(v) Programs to assess and manage distribution system real loss (vi) Water conservation program coordination and staffing support, and (vii) Other DMMs
 CWC §10631 (e)
Provide a description of the supplier’s water demand management measures. This description shall include all of the following:
(1) (A) For an urban retail water supplier, as defined in Section 10608.12, a narrative description that addresses the nature and extent of each water demand management measure implemented over the past five years. The narrative shall describe the water demand management measures that the supplier plans to implement to achieve its water use targets pursuant to Section 10608.20. (B) The narrative pursuant to this paragraph shall include descriptions of the following water demand management measures:
(i) Water waste prevention ordinances.
(ii) Metering.
(iii) Conservation pricing.
(iv) Public education and outreach.
(v) Programs to assess and manage distribution system real loss. (vi) Water conservation program coordination and staffing support. (vii) Other demand management measures that have a significant impact on water use as measured in gallons per capita per day, including innovative measures, if implemented.

Section 9 2025 Urban Water Management Plan
Demand Management Measures City of Pleasanton
Public Draft | May 2026
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The following are descriptions of the conservation prog rams Pleasanton operates within each of these DMM categories.

9.1.1 DMM 1 – Water Waste Prevention Ordinances
The City prohibits water waste within its service area, as defined by Pleasanton Municipal Code ( PMC) §14.04.060 with permanent wasteful water use violations of water service. In 1991, the City approved Ordinance No. 1508, which added Chapter 9.30 (Water Management Plan) of the PMC and established water conservation stages and additional prohibitions to prevent water waste. In March 2014, City Council approved a significant update to the Water Management Plan , which updated the definitions of water shortage stages with associated levels of water rationing, the expected water conservation measures under each stage, and prohibitions of wasteful water use . The Water Management Plan was further updated in 2016 and 2022 to align the shortage stages with the DWR standard shortage levels and further refine the conservation actions.

A water shortage emergency can be declared by either the City Manager or by resolution of the City Council. As described in Section 8, a water shortage can expand the City’s water use restrictions, depending on the shortage stage as defined in the City’s Water Management Plan.

To protect and preserve the community water supply, eliminating water waste is always essential, regardless of the water supply level. Therefore, PMC Chapter 14.04 defines wasteful water use as violations of water service. To incorporate the importance of recycled water as an alternative to landscape irrigation service within the City’s recycled water distribution system, PMC Section 14.04.060 was updated in February 2018 to include a new definition of water waste: use of potable water for outdoor landscaping through a DIM within the City’s recycled water use area. The City also updated PMC 14.04.060 in 2025 to incorporate the state’s recent prohibition o n the use of potable water for irrigating non -functional turf.

The City’s current definitions of water waste include:

1. Use of potable water between 9:00 a.m. and 6:00 p.m. to irrigate grass, lawns, groundcover, shrubbery, crops, vegetation, and trees, except for hand watering and drip irrigation.

2. The application of potable water to outdoor landscaping in a manner that causes runoff such that water flows onto adjacent property, non-irrigated areas, private and public walkways, roadways, parking lots or structures.

3. Use of potable water to irrigate outdoor landscaping during and within 48 hours after measurable rainfall.

4. Use of potable water to wash down sidewalks, walkways, driveways, parking lots, open ground or other hard surface areas by the direct application of water thereto, unless needed for health or safety reasons.

5. Use of potable water in non-recirculating decorative ponds, fountains and other water features, except for child water play features.

6. Allowing potable water to escape from breaks within the person or consumer’s plumbing system for more than eight hours after the person or consumer is notified or discovers the break.

7. Use of potable water for outdoor landscaping through a DIM within the City’s recycled water use area unless exempted by the director of operations and water utilities for existing water customers, or City Engineer for new development.

8. Any use of potable water in violation of CWC (https://municipal.codes/CA/WAT/), including, but not limited to, the use of potable water on non-functional turf.

In addition to the above water waste prohibitions, the Water Management Plan includes additional regulations aimed at reducing wasteful water use. These regulations apply even during normal supply conditions and include the following:

Section 9 2025 Urban Water Management Plan
Demand Management Measures City of Pleasanton
Public Draft | May 2026
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1. The use of potable water for washing vehicles and/or machinery from a hose equipped with a shutoff nozzle is permitted if water does not enter the storm drain system.

2. Reduce other interior or exterior uses of water to minimize or eliminate excessive runoff or waste.

3. Restaurants shall serve water to their customers only when specifically requested.

4. Operators of hotels and motels shall provide guests with the option of choosing not to have towels and linens laundered daily. The hotel or motel shall prominently display notice of this option in each guestroom using clear and easily understood language.

5. The use of water for construction activities should utilize recycled water, rather than potable water. Such use shall occur in a manner that does not result in runoff or illicit discharge into the storm drain system.

6. Commercial power washing should utilize recycled water, in a manner that does not result in water discharging into the storm drain system.

7. Pools should remain covered when not in use to prevent evaporation and should be equipped with recirculating pump(s).

9.1.2 DMM 2 – Metering

All 22,353 water connections within the City’s service area are metered, and all customer sectors are billed by volume of use, as discussed in Section 9.1.3.

Between 2016 and 2017, the City implemented an Advanced Metering Infrastructure (AMI) project, which involved replacing most small and large water meters. The AMI project increased meter accuracy due to the replacement of older meters that naturally decline in performance over time. The City replaced all water meters with Ultrasonic AMI, except approximately 300 meters that could not be replaced du e to issues with connectivity and physical meter location.

The City continues to monitor water meters for accuracy through unusual consumption trends in billing software and AMI reporting. Meters that are stuck or are showing high degrees of variability are flagged for inspection and/or replacement.

The City has a customer water portal that allows customers to view their hourly water use in near real time and to sign up to receive automated potential leakage notifications when the system detects continuous consumption over a specific threshold of time. For customers not receiving potential leakage notifications (including those not registered on the portal), water conservation staff reviews AMI reports on a weekly basis to identify meters showing constant consumption. Customers with meters exceeding a specific threshold are sent notification by email, phone, or regular mail.  CWC §526 (a)
Notwithstanding any other provision of law, an urban water supplier that, on or after January 1, 2004, receives water from the federal Central Valley Project under a water service contract or subcontract … shall do both of the following:
(1) On or before January 1, 2013, install water meters on all service connections to residential and nonagricultural commercial buildings constructed prior to January 1, 1992, located within its service area. (2) On and after March 1, 2013, or according to the terms of the Central Valley Project water contract in operation, charge customers for water based on the actual volume of deliveries, as measured by a water meter.  CWC §527 (a)
(a) An urban water supplier that is not subject to Section 526 shall do both of the following:
(1) Install water meters on all municipal and industrial service connections located within its service area on or before January 1, 2025.

Section 9 2025 Urban Water Management Plan
Demand Management Measures City of Pleasanton
Public Draft | May 2026
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As the water meters are reaching the end of their useful life, the City plans to fully replace them with new Ultrasonic Water meters starting in 2026 with the target completion of late 2027 to early 2028. The effort will allow the City to continue achieving accurate water meter reporting and water meter performance.

The new water meters will enhance the City’s ability to trace water loss, enabling the City to address issues accurately and promptly in the future.

Implementation of this DMM is ongoing and expected to help the City achieve its water use targets by providing accurate and timely water use information to the customer and the City. It also helps customers make informed decisions about their water consump tion. The City plans to continue outreach on the availability of the customer water portal to receive automatic alerts of potential leaks, as well as continued customer education on how to use the water portal to view and keep track of customer water use.

9.1.3 DMM 3 – Conservation Pricing
The City’s water rate structure encourages conservation by incorporating a volumetric charge in addition to the fixed meter charge. Consequently, water usage reductions directly reduce cost to the metered customer, while excessive water use results in increased costs.

Implementation of this DMM is ongoing and expected to help the City achieve its water use targets by ensuring water customers pay the true cost of water and to adequately fund water system operations and maintenance, including repair and replacement programs and water conservation programs.

9.1.3.1 Potable Water Rates
The City’s potable water rates include a fixed meter charge based on the size of the water meter and a consumption charge based on the quantity of water used. The City had been billing single family residential customers on an inclining block rate structure since 1980 , however, the 2026 water charges removed the block rate structure and made the volumetric water rates uniform across all potable water use sectors. Potable water rates include Zone 7 fixed and variable costs, and City distribution costs. The City’s current water rates are available on the City’s website

16. The Zone 7 water rate is provided to the City and is a direct pass through to the City’s customers. The City does not determine this rate, which is subject to change each January 1.

9.1.3.2 Recycled Water Rates
As described in previous sections of this 2025 UWMP, the City purchases and delivers recycled irrigation water to commercial customers in various areas within its service area. Recycled water rates are available on the City’s website 16 and are based on the costs associated with providing recycled water service, purchases from DERWA and Livermore, and delivering water through its distribution system.

Each December, customers will be notified of the rate that will be effective January 1 st of the following year.

9.1.4 DMM 4 – Public Education and Outreach
The City has been actively involved in providing the community with information and education on the value of water and water conservation for many years. This includes participating at local events, such as green fairs, corporate fairs, school events and farmers markets, hosting and co -hosting water -wise workshops, and meeting with business leaders and corporate green teams to discuss and answer

16 The most recent Water Rate charges for both potable and recycled water service can be found here :
https://www.cityofpleasantonca.gov/our-government/pleasanton-water/water-rates/#rate-setting-process.

Section 9 2025 Urban Water Management Plan
Demand Management Measures City of Pleasanton
Public Draft | May 2026
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questions on water efficiency. Brochures, handouts, model displays, and general discussion are offered to the public during local events.

The City is part of the Tri- Valley Water Partners, which is a collaboration between Zone 7, the regional wholesaler, and local water retailers including Pleasanton, Cal Water, Livermore, and DSRSD. The partnership promotes multiple outreach programs including education about outdoor conversation and the WaterSense program's "Fix a Leak Week" campaign . During Fix a Leak Week, Zone 7 and the local water retailers provide education around identifying and finding leaks , encourage customers to fix common leaks (faucets, toilets and showerheads) and educate the public on the value of water efficiency and the meaning of the WaterSense label.

The City’s Water Conservation Program provides guidance to internal staff to ensure effective communication with the public on matters of water conservation and programs that are available to the public to increase water efficiency. Water conservation programs include high-efficiency washer rebates, water efficient landscape rebates, weather -based irrigation controller rebates, water- efficient irrigation rebates for irrigation customers, and controller assistance program service visits. These programs are discussed in more detail in Section 9.1.7.

As detailed in Section 9.1.2, between 2016 and 2017 the City prioritized the implementation of AMI with interconnection to a customer water portal. Since these systems were implemented, an important part of the City’s Water Conservation outreach efforts has included educating custome rs on how to use the customer water portal to monitor their water use and sign up for automatic leak notifications. This allows customers to quickly investigate potential leaks and make repairs as needed to reduce water use.

In addition, Water Conservation staff works with the City’s Communications Manager to post seasonal water efficiency messaging on social media platforms and the City’s website. The City’s main water conservation website ( https://www.cityofpleasantonca.gov/our-government/pleasanton-water/water- conservation-programs/ shortcut: www.PleasantonWaterConservation.com) provides water customers with water efficiency information and upcoming events and learning opportunities on water efficiency.

Implementation of this DMM is ongoing and expected to help the City achieve its water use targets by educating water users about the importance of improving water use efficiency and avoiding water waste.

9.1.5 DMM 5 – Programs to Assess and Manage Distribution System Real Loss The City measures water pressure at entry points (i.e., turnouts and groundwater wells) and booster stations within its distribution system. Tank levels are also measured within the distribution system. All measurements are continuously monitored by the Ci ty’s Supervisory Control and Data Acquisition (SCADA) system to indicate any unusual activity or trends that could indicate water loss. Identified distribution system leaks are repaired by trained staff who are available 24 hours a day. As described in Section 9.1.4, Pleasanton also partners with other water suppliers in the Tri-Valley to increase awareness and provide information to their customers about how to identify common leaks, and to encourage the customers to fix the leaks.

As described in Section 4 of this plan, the City conducts an annual audit of production versus consumption to determine water losses. The water loss audit reports are available through DWR’s Water Use Efficiency Data Portal.
17 The City’s calendar year 2025 audit is in progress, but water loss estimated from production and billing data was approximately 10.1%.

The City will continue to perform water system audits, the accounting of water losses vs. system input, and leak detection programs. Water system audits and leak detection activities are performed on an

17 DWR’s Water Use Efficiency Data Portal: https://wuedata.water.ca.gov/awwa_plans

Section 9 2025 Urban Water Management Plan
Demand Management Measures City of Pleasanton
Public Draft | May 2026
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ongoing, year-round basis. Implementation of this DMM is expected to help the City achieve its water use targets and comply with future water loss standards by quickly identifying sources of water loss so repairs can be made and losses minimized.

9.1.6 DMM 6 – Water Conservation Program Coordination and Staffing Support Since the 1990s, the City has staffed one to two temporary, 1,000 -hour and/or 1,500 -hour water conservation interns or assistants. This position devotes 100 % of their time to water conservation. In 2011, the City hired a half time Water Conservation Manager. Duties performed by the Water Conservation Manager include:
• Coordination and oversight of conservation programs
• Coordination of joint programs with Zone 7, the retailers, and outside agencies • Communication of water conservation issues to management • Preparation and submittal of reports to various parties • Preparation and updates of water conservation plan
In 2015, a full time Water Conservation Technician was also added to assist with the above activities, as well as provide irrigation surveys to customers. The Water Conservation Technician was also a certified cross connection specialist and also conducted coverage testing and cross connection testing assistance to irrigation customers converting to recycled water. In recent years, to reflect the incorporation of the water conservation and recycled water programs under the Environmental Services Division, a new position classification was developed and approved for Environmental Services Specialist, which assumes the same responsibilities as the Water Conservation Technician classification, as w ell as additional environmental compliance functions. Two Environmental Services Specialist positions now provide support to the City’s water conservation and recycled water programs to address the transition of the Water Conservation Manager to the Environmental Services Manager, following the recent Environmental Services Division reorganization, and expanding regulatory obligations.

Additional City staff are also responsible for DMM program implementation. Customer Service Center staff provide general water conservation program information to customers and refer customers to Water Conservation Program staff for further assistance with water rebates and other water conservation programs. The Managing Director of Utilities and Environmental Services is responsible for overseeing the following: system water audits, leak detection, and repair; metering with commodity rates for all new connections and retrofit of existing connections; and participates in conservation pricing.

Following departmental strategic planning, in 2018 the Environmental Services Division was formed within the City’s Operations Services Department. Staff supporting Water Conservation, Recycled Water regulations, and Environmental Compliance all fall under the Environmental Services Division . The Environmental Services Manager directly oversees each of these areas. The integration between these programmatic areas helps to ensure recycled water inclusion into the City’s overall water conservation strategy, a s well as the integration of public outreach education interconnection between the conservation of water and clean water program (water way pollution prevention).

Implementation of this DMM is ongoing and is expected to help the City achieve its water use targets by making water conservation and implementation of the City’s water conservation program a priority among City employees.

9.1.7 DMM 7 – Other Demand Management Measures
In addition to the six DMMs described above, the City also implements various free distribution and rebate programs, which are summarized in Table 9-1. These programs have all been active within the last five

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years and help the City achieve its water use targets by incentivizing customers to increase water efficiency. Each program is described below.

Table 9-1 DMMs Available to Customers
DMM Measures (Rebate, Direct Install, and Free
Distribution Programs)
Use Type Eligibility
Residential Commercial
Water-Efficient Landscape Program (a) Yes Yes
Controller Assistance Program (b) Yes Yes
Free Indoor Water-Efficient Device Program Yes No
Free Water Conservation Lavatory Signs Program No Yes
Free Compost Program (c) Yes Yes
Rebate Programs
Weather-Based Irrigation Controllers Yes Yes
Water-Efficient Irrigation Equipment No Yes
Water-Efficient Washing Machines Yes No
Pool Covers Yes Yes
NOTES:
(a) Pleasanton customers are eligible for both Pleasanton’s and Zone 7’s lawn conversion programs, and the two programs can be combined for maximum benefit. Customers must have at least 100 square feet of lawn that is currently irrigated regularly and that they plan to replace with low water use plants. (b) Open to residential and non-residential customers that have landscaping and are responsible for their water bill.
(c) Free self-haul compost is available to all Pleasanton residents. There are no specific restrictions on the end use of compost; however, it is not intended for bulk pickup/delivery.

9.1.7.1 Water-Efficient Landscape Program
The City offers $0.50 per square foot to residential customers (up to $575) and $0. 75 per square foot to irrigation customers (up to $4,000) who replace existing front lawns or sidewalk visible lawns with water efficient, drought tolerant landscaping with ecologically friendly methods . This rebate program can be combined with Zone 7’s Water -Efficient Lawn Conversion Rebate, such that customers can get up to $3,575 (residential) or $24,000 (commercial/irrigation) by participating in both programs.

Irrigation meter customers participating in the City’s Water- Efficient Landscape Program are eligible for rebates towards qualifying water efficient irrigation equipment u sed on functional turf. Refer to Section 9.1.7.6.2 for details.

9.1.7.2 Controller Assistance Program
The City offers free controller assistance visits to residential and non -residential water customers. This service includes a walkthrough site/irrigation system evaluation of the customer’s property and irrigation controller programming assistance. The Controller Assistance Program is open to all water customers with landscaping that are responsible for the property water bill.

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9.1.7.3 Free Indoor Water-Efficient Device Program
Homes built prior to 1992 may not have water- efficient indoor plumbing, such as low flow or high - efficiency toilets, showerheads, and faucet aerators. Starting with t he U.S. Energy Policy Act of 1992 , standards were established for water fixtures , including ultra- low flow toilets (i.e., 1.6 gallon per flush [gpf]), showerheads ( 2.5 gallon per minute [gpm]), and faucets (2.5 gpm) commercially available after January 1994. In 2002, to promote indoor water conservation, the City piloted program to provide residential customers with free water-efficient showerheads. However, the showerheads were not well received, likely due to poor aesthetic appeal, and the program was discontinued for several years.

In 2008, the City began its existing Free Indoor Water Efficient Device Program with more aesthetically appealing equipment. This program continues to offer all City water customers low flow showerheads (limit 3 per water account) and bathroom aerators (limit 3 per water account). Additionally, the City provides free toilet dye strips for toilet leak detection. These items are provided by request and offered by water staff to customers. A display at the City’s Customer Service Center counter displays the offer of this program. The program is also advertised during local events where a City water conservation table is present.

9.1.7.4 Free Water Conservation Lavatory Signs
The City provides commercial customers with easy-to-use water conservation signs that can be posted on lavatory mirrors. These signs remind customers and employees to be mindful of water waste.

9.1.7.5 Free Compost for Pleasanton Residents
The City is piloting a self-haul compost program offering free compost for Pleasanton residents. Compost enriches soil, improves water retention, and supports healthier gardens, all while reducing landfill waste and greenhouse gas emissions. The compost provided is SB 1383-compliant.

9.1.7.6 Rebate Programs
The following rebate programs reimburse the City’s customers for upgrading existing equipment and appliances with more water-efficient models.

9.1.7.6.1 Weather-Based Irrigation Controllers
The City also partners with Zone 7 to provide a Weather- Based Irrigation Controller Rebate Program, which is available to single - and multi -family residences and non -residential customers. Installing weather-based irrigation controllers qualifies customers for a rebate of up to 50% of associated costs, up to a maximum of $125 for residential customers, or $3,000 for non-residential/HOA properties.

9.1.7.6.2 Water-Efficient Irrigation Equipment
Irrigation customers participating in the City’s Water-Efficient Landscape Program are eligible for rebates towards qualifying water-efficient irrigation equipment utilized on functional turf. Qualifying equipment includes rain sensors, pressure regulating devices, and rotary nozzles. The maximum rebate is $200 per site.

9.1.7.6.3 Water-Efficient Washing Machines
Since 1998, Zone 7 has had a Residential Clothes Washer Rebate Program available to Livermore-Amador Valley water customers. The rebate is for the purchase of qualifying high efficiency clothes washing machines. In 2008, Zone 7 partnered with Pacific Gas and Electric (PG&E) and other San Francisco Bay Area water agencies on a regional strategy to increase water and energy efficiency. The current program offers a rebate of up to $ 200 for installation of an "Energy Star Most Efficient" clothes washer. Though

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PG&E terminated their joint participation in the rebate program in 2018, Zone 7, the City, and the other Zone 7 retailers agreed to support the continuation of this rebate to the City’s water customers.

High-efficiency washing machines use about 50% less water than conventional, top-loading models; using only 20 to 30 gallons of water per load compared to 40 to 45 gallons. The estimated savings for a typical household is about 5,100 gallons per year. This program has been very successful in the City’s service area, and the City plans to continue to support this program through Zone 7 as an effective regional program to further reduce future water demand in the City’s service area.

9.1.7.6.4 Pool Covers
The City also partners with Zone 7 to provide its residents with a pool cover rebate program. Pool covers provide a range of benefits for owners including reduced evaporation, limiting debris and retaining heat.

The new pool covers must overlay at least 75 % of the pools surface area, and the program will cover up to 50 % of the cost, up to $100. This program is available to single family and multi- family residential customers, and non-residential customers.

9.2 Implementation over the Past Five Years
Due to the COVID -19 pandemic, most programs were either suspended or experienced reduced participation in 2021, followed by a substantial rebound beginning in 2022. Overall, program participation peaked in 2023, likely driven by increased outreach and public awareness during the 2021–2022 drought.

Implementation data were not available for some programs. For example, participation in the free compost program is not tracked, as it operates on a self- haul basis without onsite staff. Table 9 -2 summarizes program implementation over the previous five years and includes only those programs for which participation data were available.

Table 9-2 Implementation of Customer DMMs: 2021-2025
DMM Measures 2021 2022 2023 2024 2025
Water Efficient Landscape Program (Participants) 21 19 28 18 11 Controller Assistance Program (Participants) 13 35 48 47 28 Weather Based Irrigation Controller Rebate (Controllers) (a) 31 71 57 22 Pool Cover Rebate (Covers) (a) 40 62 67 13
Water Efficient Washing Machines (Machines) (b) (b) 34 14 12 Low Flow Showerheads (Showerheads) (a) 32 22 25 (a)
Faucet Aerators (Aerators) (a) 44 24 36 (a)
NOTES:
(a) No data.
(b) Not offered.

9.3 Implementation to Achieve Water Use Targets and Urban Water Use Objectives Implementation of the DMMs described above has contributed to Pleasanton achieving its water use targets and the City plans to continue and possibly expand these programs to comply with future water use targets.

Pleasanton’s SB X7 -7 per capita water use target for 2020 was confirmed to be 197 GPCD in its 2015 UWMP, and as described in Section 5, the City was able to reduce its per capita water use to 159 GPCD in 2020.

As described in Section 4.9, in July 2024, California enacted the MCCWL regulation implementing SB 606 and AB 1668 to support long- term water conservation and drought resilience. Starting in 2023,

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CWC §10609 requires that urban retail water suppliers develop UWUOs based on established standards for certain water use sectors . Pleasanton’s water use is currently below its UWUO based on the two optional reports the City submitted in 2024 and 2025. The City anticipates continuing and possibly expanding its water conservation program , if needed, to maintain compliance with the MCCWL regulations.

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10 PLAN ADOPTION, SUBMITTAL, AND IMPLEMENTATION

This section provides information on a public hearing, the adoption process for the UWMP and WSCP, the adopted UWMP and WSCP submittal process, plan implementation, and the process for amending the adopted UWMP or WSCP for Pleasanton.

10.1 Inclusion of All 2025 Data
This UWMP includes water use and planning data for the entire c alendar year of 2025, per DWR’s 2025 UWMP Guidebook.

10.2 Notice of Public Hearing

Prior to adopting th e Plan, Pleasanton held a public hear ing to present information on its UWMP and WSCP on June 2, 2026, at 7:00 pm.

Relevant entities were notified of the UWMP and WSCP review at least 60 days prior to the public hearing, including: Zone 7, DSRSD, Livermore, Cal Water, DERWA, Alameda County, SFPUC and the public. These same entities were noticed again with the specific date, time and location of the hearing at least two weeks prior to the public hearing. The notice to the public, as specified in CGC §6066, and letters to relevant agencies can be found in Appendix F.
 CWC §10621 (b)
Every urban water supplier required to prepare a plan pursuant to this part shall, at least 60 days before the public hearing on the plan required by Section 10642, notify any city or county within which the supplier provides water supplies that the urban water supplier will be reviewing the plan and considering amendments or changes to the plan. The urban water supplier may consult with, and obtain comments from, any city or county that receives notice pursuant to this subdivision.
 CWC §10642
Each urban water supplier shall encourage the active involvement of diverse social, cultural, and economic elements of the population within the service area prior to and during the preparation of both the plan and the water shortage contingency plan. Prior to adopting either, the urban water supplier shall make both the plan and the water shortage contingency plan available for public inspection and shall hold a public hearing or hearings thereon. Prior to any of these hearings, notice of the time and plac e of the hearing shall be published within the jurisdiction of the publicly owned water supplier pursuant to Section 6066 of the Government Code. The urban water supplier shall provide notice of the time and place of a hearing to any city or county within which the supplier provides water supplies. Notices by a local public agency pursuant to this section shall be provided pursuant to Chapter 17.5 (commencing with Section 7290) of Division 7 of Title 1 of the Government Code. A privately owned water supplier shall provide an equivalent notice within its service area. After the hearing or hearings, the plan or water shortage contingency plan shall be adopted as prepared or as modified after the hearing or hearings.

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10.2.1 Notice to Cities and Counties

Table 10 -1 lists the cities and counties that were notified. Copies of these letters are provided in Appendix F.

Table 10-1 Notification to Cities and Counties (DWR Table 10-1) City Name 60 Day Notice Notice of Public Hearing
City of Pleasanton Yes Yes
County Name 60 Day Notice Notice of Public Hearing
Alameda County Yes Yes

10.2.2 Notice to the Public
Notification to the public and to cities and counties also provided instructions on how to view the UWMP and WSCP prior to the hearing, the revision schedule, and contact information of the UWMP and WSCP preparer. A copy of this notice is included in Appendix F.

10.3 Public Hearing and Adoption

The deadline for public comments on the UWMP and WSCP was June 2, 2026, the date of the public hearing. Pleasanton’s City Council will formally consider adoption of the 2025 UWMP on June 2, 2026, and  CWC §10631 (a)
A plan shall be adopted in accordance with this chapter that shall do all of the following:

Urban water suppliers shall coordinate with local or regional land use authorities to determine the most appropriate land use information, including, where appropriate, land use information obtained from local or regional land use authorities, as developed pursuant to Article 5 (commencing with Section 65300) of Chapter 3 of Division 1 of Title 7 of the Government Code.
 CWC §10608.26
(a) In complying with this part, an urban retail water supplier shall conduct at least one public hearing to accomplish all of the following:
(1) Allow community input regarding the urban retail water supplier’s implementation plan for complying with this part.
(2) Consider the economic impacts of the urban retail water supplier’s implementation plan for complying with this part.
(3) Adopt a method, pursuant to subdivision (b) of Section 10608.20, for determining its urban water use target.  CWC §10621 (b)
Every urban water supplier required to prepare a plan pursuant to this part shall, at least 60 days before the public hearing on the plan required by Section 10642, notify any city or county within which the supplier provides water supplies that the urban water supplier will be reviewing the plan and considering amendments or changes to the plan. The urban water supplier may consult with, and obtain comments from, any city or county that receives notice pursuant to this subdivision.

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the City submitted the Final Plan to DWR within 30 days of approval. Appendix G presents a copy of the signed Resolution of Plan Adoption. Appendix F contains the following:
• Letters sent to and received from various agencies regarding this Plan, and • Correspondence between Pleasanton and participating agencies.

10.4 Plan Submittal

This UWMP and WSCP were submitted to DWR within 30 days of adoption and by the July 1, 2026 deadline. The submittal was done electronically through Water Use Efficiency Data Portal, an online submittal tool. The adopted UWMP and WSCP were also sent to the California State Library and to the cities and counties listed in Table 10-1 no later than 30 days after adoption.

10.5 Public Availability

On or about May 18, 2026, an electronic version of the draft UWMP and WSCP were made available for public review by visiting: www.PleasantonWaterConservation.com.

10.6 Notification of Public Utilities Commission

 CWC §10621 (e)
(1) Each urban water supplier shall update and submit its 2025 plan to the department by July 1, 2026.  CWC §10635 (c)
The urban water supplier shall provide that portion of its urban water management plan prepared pursuant to this article to any city or county within which it provides water supplies no later than 60 days after the submission of its urban water management plan.
 CWC §10644 (a)
(1) An urban water supplier shall submit to the department, the California State Library, and any city or county within which the supplier provides water supplies a copy of its plan no later than 30 days after adoption. Copies of amendments or changes to the plans shall be submitted to the department, the California State Library, and any city or county within which the supplier provides water supplies within 30 days after adoption. (2) The plan, or amendments to the plan, submitted to the department pursuant to paragraph (1) shall be submitted electronically and shall include any standardized forms, tables, or displays specified by the department.  CWC §10645
(a) Not later than 30 days after filing a copy of its plan with the department, the urban water supplier and the department shall make the plan available for public review during normal business hours. (b) Not later than 30 days after filing a copy of its water shortage contingency plan with the department, the urban water supplier and the department shall make the plan available for public review during normal business hours.
 CWC §10644 (b)
If an urban water supplier revises its water shortage contingency plan, the supplier shall submit to the department a copy of its water shortage contingency plan prepared pursuant to subdivision (a) of Section 10632 no later than 30 days after adoption, in accordance with protocols for submission and using electronic reporting tools developed by the department.

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As a publicly owned utility, Pleasanton is not regulated by the California Public Utilities Commission.

10.7 Amending an Adopted UWMP or Water Shortage Contingency Plan

If Pleasanton amends either the UWMP or WSCP, the City will follow the required steps for notification, public hearing, adoption and submittal will also be followed for the amended document.

 CWC §10644 (b)
If an urban water supplier revises its water shortage contingency plan, the supplier shall submit to the department a copy of its water shortage contingency plan prepared pursuant to subdivision (a) of Section 10632 no later than 30 days after adoption, in accordance with protocols for submission and using electronic reporting tools developed by the department.

Section 11 2025 Urban Water Management Plan
References City of Pleasanton
Public Draft | May 2026
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11 REFERENCES
ABAG, 2017. Plan Bay Area 2040. Association of Bay Area Governments, 26 July 2017.

Cal-Adapt, 2018. Annual Average Maximum Temperature, RCP 4.5, RCP 8.5. Cal-Adapt website developed by University of California at Berkeley’s Geospatial Innovation Facility under contract with the California Energy Commission , Retrieved 15 December 2025, from https://cmip5.cal- adapt.org/tools/local-climate-change-snapshot/.

DOF, 2012. E-4 Population Estimates for Cities, Counties, and the State, 20 01-2010, with 200 0 & 2010 Census Counts. State of California, Department of Finance . Sacramento, California, November 2012.

DOF, 2025a. E-4 Population Estimates for Cities, Counties, and the State, 2011-2020, with 2010 and 2020 Census Benchmark s. State of California, Department of Finance . Sacramento, California, May 2025.

DOF, 2025b. E-4 Population Estimates for Cities, Counties, and the State, 2021 -2025, with 2020 Census Benchmark. State of California, Department of Finance. Sacramento, California, May 2025.

DWR, 2025. California Irrigation Management Information System (CIMIS ): Monthly Report. California Department of Water Resources, Retrieved 15 December 2025.

Pleasanton, 2009. Pleasanton General Plan 2005–2025. City of Pleasanton, 21 July 2009.

Pleasanton, 2023. 2023–2031 Housing Element. City of Pleasanton, January 2023.

Pleasanton, 2024. Water Distribution System Capacity Master Plan. Prepared by Akel Engineering Group, Inc. on behalf of the City of Pleasanton, 15 May 2024.

U.S. Census Bureau, 2024. 2024 American Community Survey 5-year Estimates. U.S. Census Bureau, dated 2024. Retrieved from: https://data.census.gov/cedsci/ Zone 7, 2005. Groundwater Management Plan for Livermore-Amador Valley Groundwater Basin.

Prepared by Jones & Stokes, September 2005. Retrieved from:
https://www.zone7waterca.gov/sites/main/files/file-attachments/gw-mgmt-plan_2005_0.pdf.

Zone 7, 2016. Alternative Groundwater Sustainability Plan for the Livermore Valley Groundwater Basin (first version), December 2016. Retrieved from:
https://www.zone7waterca.gov/sites/main/files/file-
attachments/alt_gw_sustainability_plan.pdf.

Zone 7, 2021. Alternative Groundwater Sustainability Plan for the Livermore Valley Groundwater Basin, December 2021. Retrieved From:
https://sgma.water.ca.gov/portal/alternative/periodiceval/preview/8.

Zone 7, 2022. 2022 Water Supply Evaluation Update. Hazen and Sawyer, May 2023.

Zone 7, 2026. Livermore Valley Groundwater Basin Sustainable Groundwater Management Annual Report 2025 Water Year (October 2024–September 2025). Zone 7 Water Agency, March 2026.

Zone 7, 2026. Draft 2025 Urban Water Management Plan. Prepared by EKI on behalf of Zone 7. April 2026.

2025 Urban Water Management Plan
City of Pleasanton

APPENDIX A
DWR 2025 Urban Water Management Plan Checklist

2025 Urban Water Management Plan
City of Pleasanton Appendix A – DWR 2025 Checklist
Public Draft | May 2026
EKI Environment & Water, Inc. A-1

Row

Retail
(x)

Order

2025 Guidebook
Location

CA Water Code
Section

Summary as Applies to UWMP

Subject
Relevant
Submittal
Table

2025 UWMP
Location
1 x 1 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 Pages ES-1 to
ES-4
2 x 1 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 Pages ES-1 to
ES-4, 7-1
3 x 2.1 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 Page 2-1 4 x 2.5 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 Page 2-2
5 x 2.5 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 Page 2-2
6 x 2.5 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 Page 2-3 7 x 2.4 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 Pages 2-4,
10-1 to 10-2
8 x 2.4 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 Page 2-4
9 x 2.4 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 Page 2-3
11 x 3 Chapter 3.0 10631(a) Describe the Supplier service area. System description n/a Page 3-1 12 x 3.3 Section 3.3 10631(a) Describe the climate of the Supplier’s service area. System description n/a Page 3-3 13 x 3.4 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 Page 3-7 14 x 3.4 Section 3.4.2 10631(a) Describe other social, economic, and demographic factors affecting the Supplier’s water management planning. System description n/a Pages 3-7 to 3-8
15 x 3.5 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 Page 3-9
16 x 4.2 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 and 4- 2 Pages 4-3 to
4-4 and 4-8 to
4-9
17 x 4.3 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 Page 4-5 18 x 4.3 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 Page 4-6 19 x 4.2 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 Page 4-10

2025 Urban Water Management Plan
City of Pleasanton Appendix A – DWR 2025 Checklist
Public Draft | May 2026
EKI Environment & Water, Inc. A-2

Row

Retail
(x)

Order

2025 Guidebook
Location

CA Water Code
Section

Summary as Applies to UWMP

Subject
Relevant
Submittal
Table

2025 UWMP
Location
20 x 4.2 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 Pages 4-7 to 4-8
21 x 4.2 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 Pages 4-7 to 4-8
22 x 4.2 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 Pages 4-7 to
4-8
23 x 4.2 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 Page 4-11 25 x 5.2 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 Page 5-1
26 x 6.1 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 Pages 6-1 to
6-25, 6-31
27 x 6.1 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 as more frequent and severe periods of drought, including changes in supply due to climate change.

System supplies n/a Pages 6-31 to
6-33, and 7-12
to 7-13
28 x 6.2 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
6-1 Pages 6-7 to
6-15
29 x 6.2 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 Pages 6-7,
6-9 to 6-10
30 x 6.2 Section 6.2.2 10631(b)(4)(B) Describe the groundwater basin. System supplies n/a Pages 6-7 to 6-9
31 x 6.2 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 Page 6-8
32 x 6.2 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 Page 6-8
33 x 6.2 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 Pages 6-10 to
6-11 and 6-13
to 6-14

2025 Urban Water Management Plan
City of Pleasanton Appendix A – DWR 2025 Checklist
Public Draft | May 2026
EKI Environment & Water, Inc. A-3

Row

Retail
(x)

Order

2025 Guidebook
Location

CA Water Code
Section

Summary as Applies to UWMP

Subject
Relevant
Submittal
Table

2025 UWMP
Location
34 x 6.2 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 6-1 Page 6-15
35 x 6.2 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 Page 6-32 36 x 6.1 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 and 6-9
Pages 6-31 to
6-32
37 x 6.2 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 Page 6-25 38 x 6.2 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 and 6-3 Pages 6-19
and 6-20
39 x 6.2 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 Page 6-20
40 x 6.2 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 Pages 6-15 to
6-17, and 6-21
41 x 6.2 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 Pages 6-15 to
6-17, and 6-21
to 6-22
42 x 6.2 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)
6-4 and
6-5
Pages 6-23 to
6-24
43 x 6.2 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 Page 6-24
44 x 6.2 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 Page 6-24
45 x 6.2 Section 6.2.6 10631(g) Describe desalinated water project opportunities for long-term supply. System supplies 6-7 Page 6-25 46 x 6.2 Section 6.2.10 10631(f) Describe the expected future water supply projects and programs that may be undertaken by the water Supplier to address water supply reliability in average, single -dry, and for a period of drought lasting five consecutive water years.

System supplies 6-7 Page 6-26
47 x 6.3 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 and
O-2
Pages 6-34 to
6-36
48 x 7.1 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 Pages 7-7 to
7-8
49 x 7.2 Section 7.2 10635(a) Service Reliability Assessment: Assess the water supply reliability during normal, dry, and a drought lasting five consecutiv e 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
7-1, 7-2,
7-3, and
7-4
Pages 7-9 to
7-13

2025 Urban Water Management Plan
City of Pleasanton Appendix A – DWR 2025 Checklist
Public Draft | May 2026
EKI Environment & Water, Inc. A-4

Row

Retail
(x)

Order

2025 Guidebook
Location

CA Water Code
Section

Summary as Applies to UWMP

Subject
Relevant
Submittal
Table

2025 UWMP
Location
50 x 7.2 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 Page 7-14
51 x 7.3 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 Page 7-15
52 x 7.3 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 Page 7-15
53 x 7.3 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 Pages 7-15 to
7-16
54 x 7.3 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 Page 7-17
55 x 7.3 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 Pages 3-4,
4-11, 6-33 and
7-15
56 x 8 Chapter 8 10632(a) Provide a water shortage contingency plan (WSCP) with specified elements below. Water shortage contingency planning
n/a Appendix D
57 x 8 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 Appendix D
58 x 8.2 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 D
59 x 8.2 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 D
60 x 8.3 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 surfac e elevation, or other conditions. The shortage levels shall also apply to a catastrophic interruption of supply.

Water shortage
contingency planning
n/a Appendix D
61 x 8.3 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 Appendix D and

62 x 8.4 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 D and
Pages 8-2
63 x 8.4 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 D and
Pages 8-3 to 8-5
64 x 8.4 Section 8.4 10632(a)(4)(C) Specify locally appropriate operational changes. Water shortage contingency planning
Appendix D

2025 Urban Water Management Plan
City of Pleasanton Appendix A – DWR 2025 Checklist
Public Draft | May 2026
EKI Environment & Water, Inc. A-5

Row

Retail
(x)

Order

2025 Guidebook
Location

CA Water Code
Section

Summary as Applies to UWMP

Subject
Relevant
Submittal
Table

2025 UWMP
Location
65 x 8.4 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
Table 8-3 Appendix D and
Pages 8-3 to 8-5
66 x 8.4 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 D and
Pages 8-2 to 8-5
67 x 8.4 Section 8.4.6 10632.5 The UWMP shall include a seismic risk assessment and mitigation plan. Water shortage contingency plan
n/a Appendix D
68 x 8.5 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 D
69 x 8.5 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 D
70 x 8.6 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 D
71 x 8.7 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 D
72 x 8.7 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 D
73 x 8.7 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 D
74 x 8.8 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 D
75 x 8.8 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 D
76 x 8.8 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 D
77 x 8.9 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 D
78 x 8.10 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 D
79 x 8.11 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 D
80 x 8.12 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 Appendix D

2025 Urban Water Management Plan
City of Pleasanton Appendix A – DWR 2025 Checklist
Public Draft | May 2026
EKI Environment & Water, Inc. A-6

Row

Retail
(x)

Order

2025 Guidebook
Location

CA Water Code
Section

Summary as Applies to UWMP

Subject
Relevant
Submittal
Table

2025 UWMP
Location
81 x 9.1 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 Pages 9-1 to
9-10
83 x 10 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 Page 10-2
84 x 10.2 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 Pages 2-4 to 2-
5 and 10-1 to
10-2
85 x 10.4 Section 10.4 10621(e) Each urban water Supplier shall update and submit its 2025 plan to DWR by July 1, 2026. Plan adoption, submittal, and implementation
n/a Page 10-3
86 x 10.2 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 Page 10-1
87 x 10.2 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 Page 10-2
88 x 10.3 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 Appendix G
89 x 10.4 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 Page 10-3
90 x 10.4 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 Page 10-3
91 x 10.4 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 Page 10-3
92 x 10.7 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 Page 10-4
93 x 10.5 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 Page 10-3
94 x 10.5 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 Page 10-3
95 x 10.6 Section 10.6 10621(c) If Supplier is regulated by the Public Utilities Commission, include its plan and contingency plan as part of its general rat e case filings.

Plan adoption, submittal,
and implementation
n/a n/a

2025 Urban Water Management Plan
City of Pleasanton

APPENDIX B
DWR 2025 Urban Water Management Plan Tables

CA0110008 City of Pleasanton 22,370 12,663
22,370 12,663Total
Public Water System
Number
Public Water System
Name
Number of Municipal
Connections 2025
NOTES:

Submittal Table 2-1 Retail: Public Water Systems
Add additional rows as needed
Volume of Water
Supplied 2025 (AF)
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.

Select
One
Name of Regional Alliance or
RUWMP (Drop Down List)
NOTES:

Submittal Table 2-2: Plan Identification
Type of Plan
Individual UWMP
If Water Supplier is also a member of a SB X7-7
Regional Alliance, select name from the drop-down.

Regional Urban Water Management Plan (RUWMP)
If Supplier selected RUWMP, select name from the
drop-down.

Supplier is a wholesale supplier
Supplier is a retail supplier
UWMP Tables are in calendar years
UWMP Tables are in fiscal years
Unit AF
Submittal Table 2-3: Supplier Identification
Type of Supplier (select one or both)
Fiscal or Calendar Year (select one)
If using fiscal years provide month and date that the fiscal year begins (mm/dd)
Units of measure used in UWMP
(Select from the drop down list).

DWR NOTES:

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

NOTES:

Submittal Table 2-4 Retail: Water Supplier Information Exchange Water Code Section 10631(h)
The retail Supplier has informed the following wholesale supplier(s) of projected water use.

Wholesale Water Supplier Name
Add additional rows as needed
Zone 7 Water Agency (Zone 7)
NOTES:

2025 2030 2035 2040 2045
77,232 79,395 84,202 89,024 94,407
Submittal Table 3-1 Retail: Population - Current and Projected Water Code Section 10631(a)
Population
Served
NOTES:
(a) 2025 population per DOF estimates for the City of Pleasanton (DOF, 2025b) (b) Population projections were adapted from ABAG’s Plan Bay Area 2040 population projections, and the City’s 2024 WDSCMP (ABAG, 2017; and Pleasanton, 2024).

Use Type
Drop down list
May select each use multiple times
These are the only use types that will be recognized by the WUEdata online submittal tool
Potable or Non-Potable
(OPTIONAL)
Drop down list
Volume (AF)
Single Family Potable 6,251
Multi-Family Potable 1,320
Commercial Potable 1,379
Industrial Potable 44
Landscape Irrigation with Potable Water Potable 2,392
Landscape Irrigation with Recycled Water Non-Potable 1,073 Distribution System Water Loss Potable 1,277
12,663
1,073
13,736Total
Submittal Table 4-1 Retail: Total Uses for Potable and Non-Potable Water — Actual Water Code Section 10631(d)(1)
NOTES:
(a) Landscape water use is separated based on whether demands were met by Pleasanton’s potable water supply or recycled water supply.
(b) Distribution System Water Loss refers to real and apparent water losses from Pleasanton’s potable water distribution system. Water losses from the recycled water distribution system are included in the reported recycled water Landscape use. (c) Though a minor amount of recycled water is used for dual-plumbed buildings and construction, the volume is too low to show meaningful measure.

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. 2025 Actual Water Use
Add additional rows as needed
Subtotal Potable
Subtotal Non-Potable
Additional Description
(as needed)

Use Type
Drop down list
May select each use multiple times
These are the only Use Types that will be recognized by the WUEdata online submittal tool
Potable or Non-Potable
(OPTIONAL)
Drop down list
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF)
Single Family Potable 7,351 7,481 7,612 7,758
Multi-Family Potable 1,623 1,806 1,991 2,197
Commercial Potable 1,610 1,610 1,610 1,610
Industrial Potable 64 93 121 153
Landscape Irrigation with Potable Water Potable 2,989 3,430 3,873 4,367 Landscape Irrigation with Recycled Water Non-Potable 1,242 1,273 1,305 1,340 Distribution System Water Loss Potable 1,522 1,595 1,667 1,748 15,159 16,015 16,874 17,832
1,242 1,273 1,305 1,340
16,401 17,288 18,178 19,172Total
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.

Subtotal Non-Potable
Subtotal Potable
Add additional rows as needed.

Submittal Table 4-2 Retail: Total Uses for Potable, and Non-Potable Water — Projected Water Code Section 10631(d)(1)
Projected Water Use
(Report To the Extent that Records are Available)
Additional Description
(as needed)
NOTES:
(a) Landscape water use is separated based on whether demands were met by Pleasanton’s potable water supply or recycled water supply. (b) Distribution System Water Loss refers to real and apparent water losses from Pleasanton’s potable water distribution system. Water losses from the recycled water distribution system are included in the reported recycled water Landscape use. (c) Though a minor amount of recycled water is used for dual-plumbed buildings and construction, the volume is too low to show meaningful measure.

Are Future Water Savings Included in Projections?
Drop down list (y/n) No
If "Yes" to above, state the section or page number, in the cell to the right, where citations of the codes, ordinances, or otherwise are utilized in demand projections are found.

Optional Suppliers may complete Optional Submittal Table 4-4 R to quantify the expected savings.

Are Lower Income Residential Demands Included In Projections? Drop down list (y/n) Yes
Optional If the method for accounting Lower Income Residential Demands has been included, provide page number where this accounting can be found. 4-10 Submittal Table 4-3 Retail: Inclusion in Water Use Projections Water Code Section 10631 (a), 10631 (d)(4)(A), and 10631 (d)(4)(B) NOTES:

DWR NOTES: Additional guidance is provided in Appendix K.

2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 opt (AF)
Optional Submittal Table 4-4 Retail: Passive Water Savings Projections Water Code Section 10631(d)(4)(A)
Passive savings
Add additional rows as needed
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.

Description
(Codes, Standards, Ordinances, or Plans)
NOTES:

Public Water System ID # Reported
in Table 2-1 R Reporting Period Submitted to DWR Water
Loss Audit Program (yes/no)
2020 Yes
2021 Yes
2022 Yes
2023 Yes
2024 Yes
Submittal Table 4-5 Retail: Water Loss Audit Reporting
Water Code Section 10631(d)(3)(A)
CA0110008
DWR NOTES: Suppliers will provide a link to the WUEdata submittals of their Water Loss Audit Reports.

NOTES:

Report submittal status for all five years for each Public Water System as available.

Add rows as needed

2028 Real Water Loss
Standard per Unit per
day
Units for Real
Water Loss
Drop down list
Number of Units
(Connections or Miles
corresponding with
units selected)
Volume of Total Real
Loss
(from AWWA Water
Loss Audit)
(AF)
2028 Apparent Water
Loss Standard per
Unit per Day
Units for
Apparent Water
Loss
Number of
Connections
Volume of Total
Apparent Loss
(from AWWA Water
Loss Audit)
(AF)
CA0110008 Yes 18.8
Gallons per
Service
Connection per
Day (GPSCD)
22,358 862 34.4 13.3
Gallons per
Service
Connection per
Day (GPSCD)
22,358 310 12.4
Submittal Table 4-6 Retail: Progress Towards 2028 Water Loss Standard Water Code Section 10631(d)(3)(C)
NOTES:
(a) Provided by SWRCB: https://www.waterboards.ca.gov/conservation/docs/waterlosscontrol/standards-released.xlsx (b) GPSCD = Gallons per Service Connection per Day.
(c) Sourced from Pleasanton’s 2024 American Water Works Association AWWA Water Audit Report.

Apparent Water Loss
Did the Water Board Calculate a
Water Loss Standard for this
Public Water System? (y/n)
If no, Supplier will not complete
this row.

Real Water Loss
Water Board's Calculated Water Loss Standards
DWR NOTES: Units of measure (AF, CCF, MG) for Water Loss MUST remain consistent with units reported in Submittal Table 2-3. The units reported in Submittal Table 2-3 are used in this table's calculations.

Public Water
System ID #
Reported in
Submittal Table 2-1
R
Add additional rows as needed.

Most Recent AWWA Water Loss Audit
Real Water
Loss Per Unit
per Day
Most Recent AWWA Water Loss Audit
Apparent Water
Loss Per Unit per
Day
State Water Board Standard State Water Board Standard

Actual 2025 GPCD
(From SB X7-7
Compliance Form)
Did Supplier meet
the 2020 Target in
2025?
No Individual Target 197 159 Yes NA
Submittal Table 5-1 Retail: SB X7-7 2020 Target Progress Water Code Section 10608.40
NOTES:

Did Supplier
Achieve Targeted
Reduction for
2020?
Actual 2020 GPCD2020 Target
Regional Alliance
Target or
Individual
Target?
Drop down list
DWR NOTES:

Suppliers calculating a 2025 GPCD will need to complete and submit SB X 7-7 Compliance Tables to verify the use of SB X7-7 Methodologies.

Suppliers that were part of a merger or consolidation since 2020 see Chapter 5 and Appendix P for guidance.

NA=Not Applicable
Check the box if the Supplier was not an Urban Water Supplier during or before the 2020 UWMP reporting cycle.

Proceed to the next table.

Only for suppliers that did not meet the
Target in 2020
See DWR NOTES below.

Was Supplier part of a
merger or
consolidation since
2020?

Groundwater Type
Drop Down List
May use each category
multiple times
Potable or
Non-Potable
(OPTIONAL)
Drop down list
Location or Basin Name 2021 (AF) 2022 (AF) 2023 (AF) 2024 (AF) 2025 (AF) Alluvial Basin Potable Livermore Valley Groundwater
Basin 3,332 2,449 10 4 3
3,332 2,449 10 4 3
Add additional rows as needed
Submittal Table 6-1 Retail: Groundwater Volume Pumped
Water Code Section 10631(4) and 10631(4)(c)
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.

NOTES
Total
Check the box if the Supplier does not pump groundwater.

Proceed to the next table.

Check the box if all or part of the groundwater described below is desalinated. (OPTIONAL)

Name of Wastewater
Collection Agency
Wastewater
Volume Metered
or Estimated?

OPTIONAL
Drop Down List
Volume of Wastewater
Collected from UWMP
Service Area 2025 (AF)
Name of Wastewater
Treatment Plant (WWTP) and
Place ID Number
Drop down list
Is WWTP Located
Within UWMP
Area?
Drop Down List
City of Pleasanton Metered 6,442 Dublin San Ramon SD WWTP, Place ID 220792 Yes
City of Pleasanton (Ruby
Hills Development) Estimated 280 City of Livermore Water Reclamation Plant, Place ID No
6,722
Check the box if there is no wastewater collection system.

Proceed to the next table.

NOTES:

Submittal Table 6-2 Retail: Wastewater Collected Within Service Area Water Code Section 10633(a)
Percentage of 2025 service area population served by wastewater collection system (OPTIONAL)
Percentage of 2025 service area served by wastewater collection system (OPTIONAL) 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.

Additional Guidance: See Appendix M, Section M.21 for detailed guidance on this table.

Wastewater Collection Recipient of Collected Wastewater Total Wastewater Received from UWMP
Service Area in 2025:

Add additional rows as needed

Treatment Level
Drop down list
Volume
(AF)
Treatment Level
Drop down list
Volume
(AF)
Treatment Level
Drop down list
Volume
(AF)
Treatment Level
Drop down list
Volume
(AF)
Treatment Level
Drop down list
Volume
(AF)
Name of other
entity
Dublin San Ramon SD
WWTP, Place ID 220792 Yes 6442 13,500 Tertiary 983 Tertiary 3,397 Secondary, Undisinfected 8323 0 0
6,442 13,500 983 3,397 8,323 0 0
2025 Outcomes of Treated Wastewater
Check the box if no wastewater is treated or disposed of within the UWMP service area.

Proceed to the next table.

Does This Plant
Treat
Wastewater
Generated
Outside the
UWMP Service
Area?
(OPTIONAL)
Drop down list
Wastewater Treatment
Plant Name and Place ID
Number
Drop down list
Total 2025
Volume of
Water
Treated
(AF)
NOTES:
(a) The volume of total treated water is greater than the sum of the wastewater treatment outcomes. As noted in the DWR 2025 UWMP Guidebook, this is often the case because of biosolids removal and treatment losses.

Total
2025 Volume of
Wastewater
Received from
UWMP Service
Area
(As Reported in
Submittal Table
6-2 R) (AF)
Water Recycled Within
UWMP Service Area
(enter data as applicable)
Submittal Table 6-3 Retail: Wastewater Treatment and Outcomes Within UWMP Service Area Water Code Section 10633(b)
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.

IPR: Indirect Potable Reuse would have the treatment level of its end use requirement in the Level of Treatment drop-down.

Additional Guidance: See Appendix M, Section M.21 for detailed guidance on this table.

Water Recycled Outside of
UWMP Service Area
(enter data as applicable)
Effluent Discharge that is
not a Permitted Recycled
Water Use
(enter data as applicable)
Required Discharge for
Instream Flow
(enter data as applicable)
Delivered to Another Entity for Additional
Treatment
(enter data as applicable)
Add additional rows as needed

Volume Narrative page number
(OPTIONAL)
Landscape irrigation (exc golf
courses) Non-Potable 1072 1241 1272 1304 1339
Other (Description Required) Non-Potable Dual Plumbing 1 1 1 1 1 Other (Description Required) Non-Potable Construction uses 0 0 0 0 0 0 0 0 0 0 0
1,073 1,242 1,273 1,305 1,340 0
1073 1242 `` 1305 1340 0
Check box if recycled water is not used and is not planned for use within the service area of the supplier. The supplier will only complete the column on "Potential Recycled Water Use" and submit an accompanying narrative on the feasibility of that potential recycled water use.

Submittal Table 6-4 Retail: Recycled Water Direct Beneficial Uses Within Service Area Water Code Section 10633 (c),(d),(e)
Potential Recycled Water Use
Name(s) of Facility/ies Producing (Treating) the Recycled Water (OPTIONAL) : DSRSD RWTF Name of Supplier Operating the Recycled Water Distribution System (OPTIONAL) : City of Pleasanton Volume of Supplemental Water Added in 2025 (OPTIONAL) :

Source of 2025 Supplemental Water (OPTIONAL) :

Subtotal Non-Potable
Total
Use Type
Drop down list
Potable or Non-Potable
(after treatment if treated)
(OPTIONAL)
Drop down list
Additional Information
(as needed)
Add additional rows as needed
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. Additional Guidance: See Appendix M, Section M.21 for detailed guidance on this table.

Potential recycled water use: a description of the feasibility of these uses must be included in the narrative.

Multiple Producers: If you have multiple recycled water producers, submit a separate table for each.

NOTES:
(a) Pleasanton's dual plumbing connection is expected to continue to contribute approximately 1 AFY of demand (b) Pleasanton's two construction connections are expected to continue to contribute less than 0.5 AFY of demand, which is rounded down to 0 AF . 2025 (AF) 2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF)
Subtotal Potable

2020 Projection
for 2025 (AF)
2025 Actual
Use (AF)
1,500 1,072
1 0
1,500 1,073
Submittal Table 6-5 Retail: 2020 UWMP Recycled Water Use Projection Compared to 2025 Actual
Water Code Section 10633(e)
Check the box if recycled water was not used in 2025 nor previously projected for use in 2020.

Proceed to the next table.

Add additional rows as needed
Landscape irrigation (exc golf courses)
NOTES:
(a) Pleasanton's one dual plumbing connection contributed approximately 1 AF of demand in 2025.
(b) Pleasanton's two construction connections only accounted for 0.1 AF in 2025, which is rounded down to 0 AF in the DWR reporting tables.

Total
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 Additional Guidance: See Appendix M, Section M.21 for detailed guidance on this table.

Use Type
Drop Down list
Other (Description Required)
Other (Description Required)

Name of Action Description Expected Increase in Recycled Water Use (AF)
Financial Incentives
Price recycled water at reduced potable rates;
Reduced connection fees for new recycled water
meters
112
Conditional Requirement for
Development Projects
All landscape irrigation meters will be
converted to recycled water along
recycled water distribution system
0 112
112
Total (AF)
DWR NOTES:

Units of measure (AF, CCF, MG) MUST remain consistent with units reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.

The unit conversion to Acre Feet addresses the Water Code's requirement that this value be provided in acre-feet.

NOTES:

Submittal Table 6-6 Retail: Methods to Encourage Future Recycled Water Use Water Code Section 10633(f)
Check the box if the Supplier does not plan to expand recycled water use in the future. Supplier will not complete the table below but will provide narrative explanation.

Provide page location of narrative in the UWMP
Add additional rows as needed
Unit Conversion to AF
Planned Implementation Year
Ongoing
Ongoing

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 Zone 7 Wholesale Water Potable 12,660 -- Groundwater (not desalinated) Local groundwater from Livermore Valley Basin Potable 3 3,500
Recycled Water DSRSD RWTF and LWRP Non-Potable 1,073 -- 12,663 3,500
1,073 0
13,736 3,500
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.

Add additional rows as needed
Total
Subtotal Potable
Subtotal Non-Potable
Additional Description
(as needed)

2021 (AF) 2022 (AF) 2023 (AF) 2024 (AF) 2025 (AF)
0 0 0 0 0Total
NOTES:

Optional Table 6-8DS: Source Water Desalination by Urban Water Supplier Check the box if the Supplier does not reduce salinity in either groundwater or surface water prior to distribution.

Volume of Water Desalinated
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 units of measure reported in Submittal Table 2-3.

Add additional rows as needed
Desalination Facility
Drop Down list
Plant
Capacity
Intake Type
Drop down list
Source Water Type
Drop down list
Influent
TDS
Brine Discharge
Drop down list
Name(s) of Agencies
that Receive this Water

Water Supply
Reasonably
Available
Volume (AF)
Total Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Reasonably
Available
Volume (AF)
Total Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Reasonably
Available
Volume (AF)
Total Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Reasonably
Available
Volume (AF)
Total Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Reasonably
Available
Volume (AF)
Total Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Purchased or Imported Water Wholesale
Water Potable 11,659 12,515 13,374 14,332
Groundwater (not
desalinated)
Livermore
Valley Basin Potable 3,500 3,500 3,500 3,500 3,500 3,500 3,500 3,500 Recycled Water

DSRSD RWTF
and City of
Livermore
WRP
Non-Potable 1,242 1,273 1,305 1,340
15,159 3,500 16,015 3,500 16,874 3,500 17,832 3,500 0 0 1,242 0 1,273 0 1,305 0 1,340 0 0 0
16,401 3,500 17,288 3,500 18,178 3,500 19,172 3,500 0 0 2050 (opt)
Add additional rows as needed
Total
NOTES:
2030 2035 2040 2045
Subtotal Non-Potable
Subtotal Potable
DWR NOTES:

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

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

Submittal Table 6-9 Retail: Water Supplies — Projected
Water Code Section 10631 (b)
Projected Water Supply (Report to the Extent Practicable) 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
Additional
Detail on
Water Supply
Potable or Non-Potable
(after treatment if treated)
(OPTIONAL)
Drop Down list

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
12,663 12,663 1,238,681 1,238,681 300 - 300 Quantity of Self-Generated Renewable Energy
100,883 kWh
Data Quality (Estimate, Metered Data, Combination of Estimates and Metered Data) Data Quality Narrative:

Narrative:

Optional Submittal Table O-1B: Recommended Energy Reporting - SINGLE DELIVERY PRODUCT - TOTAL UTILITY APPROACH Data is provided by the City from flow meters in the water distribution system and electric meters at its water facilities 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:

Water management processes consuming energy include distribution/pumping, storage tank operations and groundwater pumping and treatment. At one of its wells, the City has photovoltaic solar panels that generate renewable energy. The amount of energy that Zone 7 requires to treat raw water and deliver potable water to the City is excluded
Metered Data
Volume of Water Entering Process
Energy Consumed (kWh)
Energy Intensity (kWh/vol. converted to MG)

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) Collection /
Conveyance Treatment Discharge /
Distribution Total
6,722 6,722
369,242 369,242
0 0 0 0
1,073 1,073
120,157 120,157
0 0 0 0
Quantity of Self-Generated Renewable Energy related to recycled water and wastewater operations
kWh
Data Quality (drop down)
Metered Data
Data Quality Narrative: ``
Narrative:

NOTES:

Volume of Wastewater Entering Process (volume units selected above) Wastewater Energy Consumed (kWh)
Volume of Recycled Water Entering Process (volume units selected above) Recycled Water Energy Consumed (kWh)
Wastewater Energy Intensity (kWh/volume converted to MG) Recycled Water Energy Intensity (kWh/volume converted to MG) Optional Submittal Table O-2: Recommended Energy Reporting - WASTEWATER AND RECYCLED WATER Only for Water Delivery Products Under the Urban Water
Supplier's Operational Control
Water Management Process
Data is provided by the City from flow meters in the water distribution system and electric meters at its water facilities Pleasanton operates its own wastewater collection system and recycled water distribution system but does not provide treatment.