Agenda packet — Roseville City Council, April 1, 2026 (part 6 of 7)

Water Forum Agreement 2050
February 2026 City of Folsom PSA 153
Surface Water and Groundwater Management36
Some of the City’s water supplies are subject to reduction under certain conditions. These conditions may manifest through (a) hydrological circumstances, like a drought; (b) the City’s regional relationships, like the Water Forum; and (c) legal and regulatory constraints, like species protection in the Sacramento- San Joaquin Bay Delta, curtailment orders from the State Water Resources Control Board, or an Executive Order from the Governor. Water supply reductions impact the availability of each water asset in a diﬀerent way that may impact the City’s operations and long-term planning. These aspects of the City’s water supplies are outlined below. The City does not currently pump any groundwater and does not have any groundwater pumps or related infrastructure to pump groundwater.

Pre-1914 Rights for 22,000 AFY
The City’s 22,000 acre-feet per year (AFY) entitlement is based on a pre-1914 appropriative right from the South Fork of the American River established by the Natoma Water Company in 1851. The Natoma Water Company’s original pre-1914 water right established a maximum diversion rate “to ﬁll a Canal Eight feet wide and Four feet deep with a current running ten miles per hour.” This correlates to a diversion rate of 60 cubic feet per second (cfs) and a maximum allocation of 32,000 AFY . This right is held jointly with Golden State Water Company (GSWC) pursuant to a co-tenancy agreement. The co-tenancy agreement means that both the City and GSWC have the right to use the water to the fullest extent possible as desired by the respective entities. The City and GSWC have allocated the supplies under the entire 32,000 AFY water right. The City unilaterally controls 22,000 AFY and GSWC controls the remaining 10,000 AFY .

The 1851 ﬁling is the earliest in priority of perfected appropriative rights on the South Fork of the American River and is recorded. The entire 22,000 AFY of this water right is formally recognized in the settlement agreement between the U.S. Bureau of Reclamation (Reclamation) and the City. Under this agreement, Reclamation delivers this entire water supply without reduction on a permanent basis. This water asset may be diverted at its point of diversion in the water right itself, as well as Folsom Reservoir and Folsom South Canal pursuant to the settlement agreement between Reclamation and the City. The settlement agreement also requires Reclamation to deliver the entire supply under this water asset in all year types.

Pre-1914 Rights for 5,000 AFY
The City’s 5,000 AFY entitlement is also based on Natoma Water Company’s pre-1914 appropriative water right from the South Fork of the American River. In November 1994, the City executed a contract with Southern California Water Company-Folsom Division (SCWC) under which the City acquired the right to lease 5,000 AFY of water per year. As described above, SCWC controlled the remaining 10,000 AFY of the 32,000 AFY total water right under the original co-tenancy of the Natoma Water Company purchase. As such, the basis of this water asset is held with GSWC pursuant to the co-tenancy agreement, but the lease of the water asset to the City is pursuant to a lease agreement. This water right is also formally recognized in the settlement agreement between Reclamation and the City.

36 The City of Folsom does not currently pump any groundwater. Although the City does not currently pump any groundwater, the City is a member of the Sacramento Groundwater Authority and the Sacramento Central Groundwater Authority.

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February 2026 City of Folsom PSA 154
This water asset for 5,000 AFY has the same diversion provisions as the 22,000 AFY diversion right above since both assets are derived from the same water right. Moreover, this water asset has the same priority as the 22,000 AFY water asset which makes it extremely resilient against drought conditions and regulatory curtailment.

Central Valley Project Repayment Contract for 7,000 AFY On April 8, 1999, Reclamation entered Contract No. 6-07-20-W1372 with the Sacramento County Water Agency (SCWA) under Section 206 of Public Law 101-514, which was sponsored by Representative Vic Fazio. The contract dedicated 22,000 AFY of water, commonly called “Fazio Water,” to SCWA. The City was speciﬁcally named in the SCWA-Reclamation contract as a subcontractor to gain beneﬁt of a portion of the Fazio Water supply. On April 25, 2000, SCWA entered a separate contract with the City to provide the City with 7,000 AFY of the 22,000 AFY of Fazio Water.

The Fazio Water supply is a standard Central Valley Project (CVP) “Project Supply” water entitlement – derived entirely from federal CVP water supplies. The sole source of supply for the Fazio Water is the American River water rights held by Reclamation for diversion and storage at Folsom Reservoir.

Reclamation’s CVP rights to divert water are junior to the water rights that existed prior to the development of the CVP . The Fazio Water contract entitlement for the City is fairly reliable. In normal and wet years, the City may call upon the supply for delivery and should receive 100% allocation. In dry years, the water supply is subject to Reclamation’s Municipal and Industrial (M&I) Water Shortage Policy.

In December 2016, the City became a direct CVP Contractor, and no longer a sub-Contractor to SCWA, through a partial assignment of the City’s 7,000 AFY under Contract No. 6-07-20-1372B with Reclamation. The purpose of this assignment is to consolidate the City’s water assets derived from the City’s relationship with Reclamation to better facilitate administration of those water assets. In February 2020, the City and Reclamation executed a contract (Contract No. 6-07-20-W1372B-P) to convert 37 the
CVP water service contract into a CVP repayment contract as authorized under the Water Infrastructure Improvements for the Nation Act.

Current Diversions
Table 2 summarizes the annual pre-1914 and CVP diversions made by the City from 2013 to 2023. These diversions all occurred from Folsom Reservoir and include both potable and non-potable uses. These totals do not include water delivered to the Ashland Service Area as that area is supplied from the SJWD water supply portfolio and not from water diverted by the City.

Table 2. Annual Diversions (2013-2023)
Year Pre-1914 Diversions (AF) CVP Diversions (AF) Total Diversions (AF) 2013 23,293 1,391 22,990
2014 18,668 750 19,418
2015 16,456 450 16,906
2016 14,687 3,860 18,547
2017 15,217 4,040 19,257
2018 14,255 3,983 18,238

37 At the time of signing the WFA, this and similar contract conversions are pending litigation.

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February 2026 City of Folsom PSA 155
Year Pre-1914 Diversions (AF) CVP Diversions (AF) Total Diversions (AF) 2019 13,687 4,017 17,704
2020 15,808 2,910 18,718
2021 16,425 1,500 17,925
2022 16,794 1,000 17,794
2023 11,497 6,200 17,697
Future Projected Diversions
The future projected diversions under “normal” conditions (as shown below) are for when the Unimpaired Inﬂow to Folsom Reservoir (UIFR) is above 950 TAF. The City’s 2020 Urban Water Management Plan (UWMP) identiﬁed these diversions in ﬁve-year increments to 2045, which is also the planning date for build-out of the City. The current 5-year UWMP projections will serve as the basis of diversions when the UIFR is above 950 TAF. Diversions will derive from a combination of the City’s pre- 1914 and CVP water supplies. Table 3 shows the diversions under this condition.

Table 3. Future Projected Diversions
2025 2030 2035 2040 2045
Demand Totals 20,517 22,746 24,214 25,145 25,519
Wet Conditions Management
Wet conditions will be assumed to be when the UIFR is greater than 1.6 MAF. This threshold is not considered a formal deﬁnition of what constitutes a “wet year” or “wet conditions” on the American River but was utilized in the original Water Forum agreement as a basis for surface water commitments.

It is expected that additional analysis and discussions will be conducted as part of the American River Climate Adaptation Program (ARCAP) to explore and deﬁne what other potential criteria could be used to guide regional operations in wet times. Where possible, the City will support the use of regional surface water supplies to assist in regional groundwater recharge.

Drier Conditions Management
When the UIFR is between 950 TAF and 400 TAF, the City will reduce surface water diversions up to 10 percent or as required by the City’s Water Shortage Contingency Plan 38, whichever is greatest. The City
will also reduce CVP diversions (included in the overall 10%) as required by the CVP M&I Water Shortage Policy.

Driest Conditions Management
When the UIFR is less than 400 TAF, the City will reduce surface water diversions up to 20 percent, as required by the City’s Water Shortage Contingency Plan, or as required by any mandates issued by the State of California, whichever is greatest. The City will also forego scheduling any CVP Repayment water during these conditions (included in the overall 20% or more). The City can oﬀset surface water

38 The City’s Water Shortage Contingency Plan is based on water shortage events that directly impact the availability of the City’s water supplies. The Plan is not based on the UIFR.

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Water Forum Agreement 2050
February 2026 City of Folsom PSA 156
reductions through conjunctive use opportunities with neighboring purveyors or through water stored in existing or future surface water storage.

As an example, if the City is able to bank water in the groundwater basin and another purveyor with access to surface water and groundwater can extract the banked groundwater and use this banked water to meet their demands while at the same time reducing their surface water diversions, the City will be able to deliver this surface water to meet its customer demands. Under these arrangements, other purveyors will use groundwater in lieu of surface water equivalent to the amount that the City would continue to divert.

However, it is recognized that in years when the projected UIFR to Folsom is less than 750,000 AF there may not be suﬃcient water to provide the purveyors with driest year quantities speciﬁed in their agreements and provide the expected ﬂows to the mouth of the American River. In those years, Folsom will participate in a conference year with other stakeholders on how the available water should be managed. The conferences will be guided by the conference year principles described in the Water Forum Agreement.

Critically Low Storage Conditions
The City’s sources of water are all delivered through an M&I intake in Folsom Dam, which is at an elevation that would be subject to air entrainment at approximately 110,000 AF of storage in Folsom Reservoir. Because this entrainment could result in signiﬁcant damage to the impellers of the pumps that Reclamation uses to pump the supplies brought through the intake to Folsom, Reclamation will install 10 ﬂoating pumps with a total capacity of 30 cfs. This arrangement will allow delivery of emergency supplies in extreme conditions even when the storage level is as low as 60,000 AF. The 30 cfs capacity of these emergency pumps is half the ﬂow rate Reclamation is required to deliver to the City under its pre-1914 settlement agreements.

The City completed a Water Vision planning study that is a comprehensive 50-year strategy designed to secure and strengthen the City’s long-term water supply. This included an analysis of risks and vulnerabilities associated with infrastructure failure and a changing climate. The primary objective was to evaluate and recommend ways to improve the reliability and redundancy of the City’s water supplies, including but not limited to, a scenario of not having access to water supplies from Folsom Reservoir.

Ultimately, the Water Vision developed a phasing plan with recommended projects that would diversify the City’s water supply portfolio if access to current water supplies from Folsom Reservoir could not be achieved.

The City could also work with neighboring water purveyors to deliver treated groundwater through existing or new interties with the City. The City would also have to implement its Water Shortage Contingency Plan that aligns with a potential water supply shortage and would have to comply with any applicable mandates issued by the State of California.

Contributions to River Corridor Health
• Reduce direct surface water diversions from Folsom Reservoir • Continued long-term funding for the Water Forum Successor Eﬀort (WFSE)

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February 2026 City of Folsom PSA 157
• Contribute to funding for regional advocacy for the implementation of the Water Forum Agreement
• Contribute to enhanced science and monitoring along the Lower American River Contributions to Water Supply Reliability

1. Implement conjunctive use opportunities with neighboring purveyors

2. Evaluate surface and groundwater storage options

3. Contribute to funding for regional advocacy for the implementation of the Water Forum Agreement
Demand Management
At the time of signing, key requirements are associated with the 2024 “Making Conservation a California Way of Life” regulations, Assembly Bill (AB) 1572 related to irrigation of non-functional turf with potable water, and the Model Water Eﬃcient Landscape Ordinance (MWELO) which encourages low-water use and native landscaping for new development.

Potential
39 demand management actions could include the following:
• Develop programs to assist in the conversion of publicly owned, commercial, and institutional landscaping to low-water-use native landscaping
• Expand and strengthen regional conservation messaging about plant watering needs • Provide water use eﬃciency rebates to residential and non-residential customers • Track residential and non-residential customer water use and develop targeted outreach opportunities for high water use customers
• Maintain and implement water waste prevention programs • Maintain customer outreach and communication programs to educate and inform customers of state water use eﬃciency requirements
• Maintain customer programs to support the implementation of Best Management Practices for the Commercial, Industrial, and Institutional (CII) sector • Evaluate the feasibility of implementing residential customer programs that may include landscape conversions, irrigation system tune-ups, or water monitoring devices Including any requirements identiﬁed in the California Water Code, the City commits to abiding by the relevant conservation and water use eﬃciency regulations, including following the water use reduction stages as set forth by the City’s most recently adopted Water Shortage Contingency Plan.

39 While the list of potential demand management actions is included in the City’s PSA, future regulatory requirements or actions by the Folsom City Council may necessitate the need to update this list.

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February 2026 City of Folsom PSA 158
Project List and Future Water Supply Reliability Eﬀorts Structural
The following infrastructure projects will support eﬀorts to implement the City’s proposed PSA, and to support the Water Forum coequal objectives.
• New or improved interties with other purveyors that have access to groundwater and surface water
• Groundwater storage opportunities in the Sacramento Regional Water Bank • Non-potable infrastructure to deliver remediated groundwater for non-potable irrigation purposes within the City’s water service area
• Alternative raw water supply projects to improve reliability and redundancy of delivering raw water from Reclamation to the City consistent with existing water rights and contract ﬂow rates and volumes
Non-Structural
The following list of non-structural projects will support eﬀorts to implement the City’s proposed PSA, and to support the Water Forum’s coequal objectives.
• Agreements with neighboring purveyors for conjunctive use opportunities • Continued water use eﬃciency programs for the City
• Funding for water use eﬃciency rebates for the City
• Conserved water transfers consistent with the California Water Code that do not negatively impact the Lower American River
• Water banking transfers consistent with the Sustainable Groundwater Management Act • Support and participate in regional partnership opportunities with other water purveyors that provide reliability to regional water supply systems and beneﬁts to the Lower American River • Support, and participate as needed, SCWA and other regional partners that would consider opportunities to utilize the Freeport Regional Water Authority to beneﬁt the co-equal objectives Caveats and Assurances

1. The ability for any individual purveyor to implement the surface water diversion principles will depend on their respective opportunities and constraints.

2. In circumstances where excess water is made available by Reclamation by Article 3(f) of a purveyor’s Water Repayment Contract or by a Section 215 Contract between the purveyor and Reclamation due to ﬂood control or “uncontrolled season” operations at Folsom Reservoir, for the purposes of groundwater recharge, that water would not be counted as diversion water within their PSA, regardless of year type.

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February 2026 City of Folsom PSA 159

3. Support for the development of redundant water supplies that do not negatively impact the co- equal objectives of the Water Forum Agreement and are consistent with the existing water rights and contract volumes included in the City’s 2035 General Plan (amended and adopted on August 27, 2024).

4. Water demands in future UWMPs shall be re-visited and updated in the surface water diversions table.

5. Proposed reductions in surface water diversions shall demonstrate a positive impact to the ﬁsheries or habitat along the Lower American River, i.e., the City is not reducing diversions only for the sake of reducing diversions.

Future regulatory changes may require modiﬁcations to dry-year actions because achieving certain reductions may not be feasible or achievable.

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Water Forum Agreement 2050
February 2026 City of Roseville PSA 160

City of Roseville
Purveyor Specific Agreement
Updated: January 8, 2026
Purveyor Background
The City of Roseville Environmental Utilities Department (Roseville) is a public utility owned and operated by the City of Roseville, providing drinking water, wastewater, recycled water, and waste services to the Roseville community.

Roseville recognizes that climate change, population growth, and regulatory requirements are creating increasing challenges in balancing water supply and demand. Groundwater and surface water alike are under pressure, and Roseville is committed to advancing sustainable solutions that protect both resources for future generations, while maintaining our commitment to the health of the lower American River (LAR).

To address these challenges, Roseville participated in the American River Basin Study (ARBS) that was completed in 2022. The study was developed by the U.S. Bureau of Reclamation (Reclamation) in partnership with Roseville and other regional water agencies. Building on earlier statewide studies, the ARBS focused speciﬁcally on the American River Basin; developing tools, analyses, and climate adaptation strategies to strengthen water supply reliability, protect endangered species, and support sustainable reservoir operations. Roseville’s participation reﬂects our awareness of climate change challenges and our commitment to working collaboratively with local, state, and federal partners to bring forward long-term, regional water solutions for our community, the region, and the LAR.

In addition, Roseville has embraced the requirements of the Sustainable Groundwater Management Act (SGMA) and is an active member of the West Placer Groundwater Sustainability Agency (WPGSA), which manages a portion of the North American Subbasin alongside Placer County, the City of Lincoln, Placer County Water Agency (PCWA), and California American Water. Through this partnership, Roseville and our Groundwater Sustainability Agency Partners are implementing a Groundwater Sustainability Plan (GSP) that protects against groundwater overdraft, supports reliable supplies for residents, agriculture, and businesses, and contributes to land and habitat conservation.

Roseville also continues to expand our Aquifer Storage and Recovery (ASR) program as part of a conjunctive use strategy, which is further discussed in this Purveyor Speciﬁc Agreement (PSA). This innovative approach safeguards our groundwater basin, improves regional resilience, secures reliable

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February 2026 City of Roseville PSA 161
water supplies and can be used in a conjunctive way to beneﬁt the LAR, particularly during the driest years.

Together, these eﬀorts underscore Roseville’s commitment to climate change adaptation, groundwater sustainability, and regional collaboration, helping to ensure a resilient water future for our community, the region, and the LAR.

With these challenges, Roseville has developed diversity in its water supply and its water infrastructure over the past three decades to become more resilient and positioned to meet the Water Forum’s coequal objectives of water supply reliability and river corridor health.

The primary water supply for Roseville is surface water diversions from Folsom Reservoir. Roseville has contracts with Reclamation for up to 32 thousand acre-feet (TAF) of water per year, and PCWA for up to 34 TAF per year. Raw water from Folsom Reservoir is conveyed to Roseville’s water treatment plant in the Granite Bay area and is then distributed through Roseville’s 600 miles of water mains to customers.

Current surface water entitlements total around 66 TAF per year. Roseville maintains options for an additional 10 TAF of water supplies from PCWA, and although those options are contractually available, they have not yet been exercised.

Roseville also currently has 7 Aquifer Storage and Recovery (ASR) wells providing a maximum extraction capacity of 23.5 TAF/year. Roseville is planning to expand their groundwater program to have a more robust water supply available in the event of a water shortage. Roseville’s ASR program also has the capacity to inject approximately 11 TAF of treated water back into the groundwater basin.

Roseville has a Recycled Water Program with source water from two regional wastewater treatment plants that operate with an annual production rate of approximately 3.8 TAF of recycled water annually.

This water serves the landscape watering needs of parks, golf courses, and medians in the newer western section of Roseville.

Roseville has 17 interties with the surrounding purveyors including PCWA, San Juan Water District (SJWD), California-American Water Company, Citrus Heights Water District, and Sacramento Suburban Water District (SSWD).

Roseville has invested heavily in long-term water eﬃciency eﬀorts over the last couple of decades, and, as per capita water use has declined, water demands have remained relatively stable despite population growth in the area.

Surface Water and Groundwater Management
The following sections outline the opportunities for Roseville to contribute to both of the Water Forum coequal objectives, while adhering to the guiding principles for surface water diversions.

1. Roseville intends to prioritize alternative water supplies to surface water supplies from the American River system in dry conditions to provide ﬂow and water quality 40 beneﬁts for the LAR,
such as:
• Pursuing opportunities for increased groundwater pumping to allow surface water to remain in the LAR.

40 Including temperature, dissolved oxygen, and potentially other characteristics.

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February 2026 City of Roseville PSA 162
• Pursuing opportunities for increased diversions from the Sacramento River as an alternative to surface water from the American River system.

2. Ensure surface water commitments are in balance with regional eﬀorts for groundwater sustainability.
• Prioritize surface water diversions in wet conditions to allow groundwater recharge.

3. Protect regional surface water entitlements to ensure local control of water to beneﬁt the coequal objectives, with the following beneﬁts:
• Enabling contributions to river corridor health.
• Reducing surface water diversions from Folsom Reservoir in the driest conditions. • Contributing to water supply reliability.
• Enabling the expansion of groundwater infrastructure to allow for conjunctive use.

Current and Projected Surface Water Diversions
Current Roseville demands are approximately 32 TAF per year, including ASR, and are expected to grow to just under 63 TAF per year in 2040.

Wet Conditions Management
Roseville’s intent for managing surface and groundwater under wet conditions is to follow the groundwater management guiding principles in the Water Forum Agreement 2050 (WF2050), as follows:
• Support conjunctive management of regional groundwater basins with surface water supplies to enhance water supply reliability and provide ﬂow and water quality beneﬁts to the LAR. • Prioritize use of groundwater in dry conditions to help mitigate the impacts to surface water shortages in the LAR by supplementing Central Valley Project (CVP) water allocations from the American River with groundwater using our existing and planned aquifer storage and recovery wells.
• Work with Reclamation to maximize groundwater recharge with Repayment Contract Article 3(f) water
41 during wet years42 with the goal of minimizing impacts to the LAR. • Participation with our regional partners in the Sacramento Regional Water Bank Project. • Continued investments in Aquifer Storage and Recovery (ASR) facilities. • Commitments related to reduced surface water diversions that are based on hydrologic conditions.

41 Article 3(f) water is what Reclamation provides currently, when available, based on Reclamation’s preference.

Section 215 water has been available to Roseville by Reclamation in the past. As such, the source of the water made available for recharge purposes has varied and may vary in the future. 42 Wet conditions will be assumed to be when the Unimpaired Inflow Folsom Reservoir (UIFR) is greater than 1.6 MAF.

This threshold is not considered a formal definition of what constitutes a “wet year” or “wet conditions” on the American River but was utilized in the original Water Forum agreement as a basis for surface water commitments. It is expected that additional analysis and discussions will be conducted as part of the American River Climate Adaptation Program (ARCAP) to explore and define what other potential criteria could be used to guide regional operations in wet times.

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February 2026 City of Roseville PSA 163
Drier Conditions Management
The sections below describe the proposed commitments in Baseline (Normal), Dry, and Driest conditions. The proposal follows the existing Water Forum Agreement structure with Unimpaired Inﬂow to Folsom Reservoir (UIFR) as the index. The levels of surface water diversions are proposed to be updated based on 5-year projections for demand estimates as reported in Roseville’s Urban Water Management Plan (UWMP). These diversions would be updated based on each 5-year update to the Roseville UWMP .

Normal Conditions
Normal conditions would be deﬁned as when the UIFR is projected to be greater than 950 TAF. In normal conditions, Roseville’s surface water diversions would be deﬁned by the most recent UWMP’s 5- year projected demand. Roseville’s strategy in normal years is to not pump groundwater from groundwater wells in excess of what was injected, thus creating a bank of water for future use.

Dry Conditions
Dry Conditions could be deﬁned as when the UIFR is between 950 TAF and 400 TAF. In the ﬁrst Water Forum Agreement, surface water commitments during these conditions generally follow a “wedge” shape (decreasing linearly from normal levels to the driest conditions). Per Roseville’s 2020 Water Shortage Contingency Plan (WSCP), if a signiﬁcant drought stage is reached, Roseville can pump additional groundwater to augment its surface water supply and make up for deﬁcits of the surface water supply. Roseville continues to invest in development of groundwater infrastructure to increase supply reliability in times of drought, however in any given year type, Roseville must make determinations of drought stage without consideration of groundwater supplies, per the terms of the Roseville Municipal Code.
57,21057,210
45,76845,768
0 10,000
20,000
30,000
40,000
50,000
60,000
70,000
0 500 1,000 1,500 2,000
Volume of Water (TAF)

UIFR (TAF)
Surface Water Diversions
based on 2040 Projections
Driest Dry Normal

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February 2026 City of Roseville PSA 164
In both Dry and Driest hydrological year types, Roseville committed to forego 4,460 AF of surface water in 3 out of 8 years to support the health of the LAR. The American River Terms for Ecosystem Support and Infrastructure Assistance Needs (ARTESIAN) project agreement with the Regional Water Agency (RWA) was created to govern the administration of California Department of Water Resources (DWR) funds provided to RWA on behalf of the participants for early implementation of the American River region’s 2019 Voluntary Agreement proposal.

In consideration of the funding provided by DWR under this Funding Agreement, the American River water suppliers who receive that funding agreed to jointly provide 30,000 acre-feet of groundwater- substitution water to augment, through Reclamation's operation of Folsom Dam and Reservoir as part of coordinated CVP and State Water Project (SWP) operations, stream ﬂows in the LAR in each of three out of eight 8 years beginning in 2025. Each of those three years will be either a critical or dry year on the Sacramento Valley Index under the State Water Resources Control Board's Revised Decision 1641. This commitment is referred to as the "Flow Contribution" and each annual contribution is referred to as an "Annual Flow Contribution." Roseville, as a Participant in the RWA joint powers agreement and a recipient of grant funding, has committed to 4,460 AF.

Driest Conditions
The driest conditions are proposed to be deﬁned as when the UIFR is 400 TAF or lower. In the driest conditions, Roseville proposes to reduce surface water diversions from Normal Diversions by 20%. This proposal is speciﬁc to surface water diversions and is not to be confused with demands. Roseville’s WSCP guides operations and demands based on expected supply availability. Per Roseville’s 2020 WSCP , if a signiﬁcant drought stage is reached, Roseville can pump additional groundwater to augment its surface water supply and make up for deﬁcits. Roseville continues to invest in development of groundwater infrastructure to increase supply reliability in times of drought, however in any given year type, Roseville must make determinations of drought stage without consideration of groundwater supplies, per the terms of the Roseville Municipal Code.

Critically Low Storage Conditions
Roseville’s sources of surface water are all delivered through a municipal and industrial (M&I) intake in Folsom Dam, which is at an elevation that would be subject to air entrainment at approximately 110,000 AF of storage in Folsom Reservoir. Because this entrainment could result in signiﬁcant damage to the impellers of the pumps that Reclamation uses to pump the supplies brought through the intake to Roseville, SJWD, and the city of Folsom, this level of storage is likely to cause “dead pool” conditions, which to date, has never occurred.

If the water level drops below the M&I intake, Reclamation would use an emergency pump on one of the three power penstocks in the dam to deliver water to Roseville and SJWD and ﬂoating barges to deliver water to Folsom. The emergency pump has a capacity of 60 cfs (43,500 AF/yr), and the barges have a capacity of 30 cfs. These facilities would allow Reclamation to access water in Folsom Reservoir between the 110,000 AF at which the M&I intake goes dry and the approximately 53,000 AF storage level at which the power penstocks go dry.

To further prepare for and mitigate this possible “dead pool” scenario, below are the current and future emergency plans on how Roseville would navigate a “dead pool” scenario at Folsom Reservoir.

Additional information is provided in the Project List and Future Water Supply Reliability Eﬀorts.

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February 2026 City of Roseville PSA 165
Current conditions
Max Day Demand = 55 million gallons per day (MGD)
Emergency pump at Folsom Reservoir = 19.4 MGD
• Demand Reduction at 20% realized water conservation = 11 MGD. Implement immediate water conservation to reduce customer demand during this emergency, using the powers prescribed in the Roseville Municipal Code and the City’s Water Shortage Contingency Plan.43 • ASR Well Production = 16.7 MGD. Immediately activate Roseville’s Aquifer Storage and Recovery (ASR) Wells.44
• Activate emergency interties = 17.3 MGD. Through mutual aid and other agreements request emergency water from PCWA and SSWD.

Buildout conditions
Max Day Demand (MDD) at buildout = 100 MGD
Emergency pump at Folsom Reservoir = 19.4 MGD
• Demand Reduction at 20% realized water conservation = 20 MGD. Implement immediate water conservation to reduce customer demand during this emergency, using the powers prescribed in the Roseville Municipal Code and the City’s Water Shortage Contingency Plan. • ASR Well Production = 25.9 MGD. Immediately activate Roseville’s Aquifer Storage and Recovery (ASR) Wells.45
• Utilize capacity from future water supply reliability projects:
o Raw Water Pipeline (Middle Fork Project Supply) via PCWA: 10 MGD o RiverArc Project: 57 MGD
Summary of Dry Conditions Management
Roseville has strategically positioned itself to meet current and buildout water demands while enhancing supply reliability and supporting environmental stewardship of the LAR. Through a combination of diversiﬁed water sources, infrastructure investments, and collaborative regional planning, Roseville demonstrates its commitment to long-term water sustainability.

Current Demand & Supply Capacity:
• MDD: 55 MGD
• For Critically Low Storage Conditions
o With a planned 20% target demand reduction via water conservation (Revised MDD:

44.0 MGD)
• Available Supply
o Emergency pump at Folsom Reservoir: 19.4 MGD
o ASR Extraction Capacity: 16.7 MGD

43 Roseville’s Municipal Code requires water conservation levels for each drought stage; from 10% for a stage one drought and up to 50% for a stage five drought.
44 Currently, Roseville has 7 active ASR wells with a production capacity of 16.7 MGD. 45 Four additional ASR wells are planned by 2028 increasing the production capacity to 25.9 MGD of groundwater to serve to our customers’ demands under mandatory water conservation.

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February 2026 City of Roseville PSA 166
o Emergency interties: 17.3 MGD
o TOTAL Projected Available Supply = 19.4 + 16.7 + 17.3 = 53.4 MGD This summary reﬂects a supply capacity that exceeds projected demand, which Roseville plans to leverage as a key strategy for mitigating critically low storage conditions.

Buildout Demand & Supply Capacity:
• MDD: 100 MGD
• For Critically Low Storage Conditions
o With a planned 20% target demand reduction via water conservation (Revised MDD: 80 MGD)
• Available Supply
o ASR Extraction Capacity (11 wells): 25.9 MGD
o Raw Water Pipeline (MFP Supply) via PCWA: 10 MGD
o RiverArc Project: 57 MGD
o TOTAL Projected Available Supply = 25.9 + 10 + 57 = 92.9 MGD This summary, a conservative approach (without the emergency pump at Folsom, and without supply from emergency interties) reﬂects a supply capacity that exceeds projected demand, which Roseville plans to leverage as a key strategy for mitigating critically low storage conditions. These enhancements create resilience during critical shortage conditions such as droughts or potential “dead pool” scenarios at the Folsom Reservoir.

Through these eﬀorts, the City of Roseville continues to be a regional leader in integrated water resource management, supporting both water supply reliability and the ecological health of the LAR.

Demand Management
Roseville understands that Water Code Section 10632 (a)(3)(A) requires purveyors to plan for reductions of 10%, 20%, 50%, and beyond. Roseville’s current Water Shortage Contingency Plan (WSCP), as approved by the City Council, stipulates a 20% reduction in demand at a Stage 2 shortage level (when annual supplies are expected to meet 80% of the expected demand). The WSCP also includes shortage levels up to Stage 5 when supplies are only projected to meet 50% of the demands. The WSCP would continue to guide Roseville’s operations and if supplies were projected to be reduced to a level requiring greater reductions, those reductions would be implemented.

To meet long-term water use targets associated with the 2024 “Making Conservation a California Way of Life” regulations and other state ordinances and ensure a sustainable supply, Roseville implements a comprehensive set of Demand Management Measures (DMMs) as outlined in its UWMP .

Core DMMs per Water Conservation Act of 2009 (Senate Bill X7-7) Requirements • Water Waste Prevention Ordinance: Enforced through patrols and public reporting to curb non- essential use.
• Metering Program: Allows for eﬃcient usage tracking and leak detection. • Conservation Pricing: A uniform rate structure reﬂects true water cost and encourages eﬃcient use.

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• Public Education & Outreach: Ongoing campaigns, school programs, and exhibits at the Utility Exploration Center, a facility that focuses on educating Roseville customers, promote water- saving behaviors.
• System Loss Management: Annual audits, in-house and third-party leak detection, and potable water pipeline rehabilitation projects help reduce water loss. • Program Coordination & Staﬃng: Certiﬁed staﬀ manage and implement conservation programs and customer engagement initiatives.

Current Residential & Commercial Conservation Programs
• Residential: Includes Water Wise House Calls, toilet replacement rebates, turf replacement (“Cash for Grass”), irrigation rebates, and landscape water budget tracking. • Commercial: Oﬀers irrigation budgets and surveys, customized rebates for irrigation and appliances, and interior water use audits.
• Additional Measures
o Water waste investigations
o Advanced Metering Infrastructure (AMI) program monitoring o High water use investigations
Other Ongoing Conservation Eﬀorts
• Monthly water use reporting (SB 606 & AB 1668)
• Ban on wasteful practices (SB 606 & AB 1668)
• Leak reduction initiatives (SB 606 & AB 1668)
• Model Water Eﬃcient Landscape Ordinance (MWELO) enforcement and annual reporting to DWR
• Developing policy for non-functional turf (AB 1572) compliance • Ongoing Roseville Municipal Code revisions to align with state water use regulations (AB 1572) • Cross-departmental collaboration to ensure compliance with non-functional turf requirements (AB 1572)
Regional Collaboration
• RWA Partnership: Continued expansion of education and awareness through the Regional Water Eﬃciency Program (WEP) - Roseville participates in outreach, rebates, events, and award- winning campaigns such as “Summer Strong” and “Your Weekend, Your Rules,” reaching millions across the region.

Future Plans
To continue to ensure that Roseville is meeting the goals and targets of the 2024 “Making Conservation a California Way of Life” regulations, Assembly Bill (AB) 1572 related to irrigation of non-functional turf with potable water, and the Model Water Eﬃcient Landscape Ordinance (MWELO), the following proposed combination of strategies are future considerations. • Expand customer access to real-time water use data through AMI portal enhancements to continue to create awareness of water use and consistently inﬂuence behavior for lower water use.

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• Enhance outdoor water education eﬀorts via the Inspiration Garden for both residential customers and commercial businesses.
• Continuously adapt programs based on eﬀectiveness, funding availability, and community needs.

Caveats and Assurances
• If, and when, the City of Roseville exercises all or part of the additional 10 TAF of PCWA water, Roseville’s PSA and all information herein will be updated upon written notice to the Water Forum.
• In circumstances where excess water is made available by Reclamation by Article 3(f) of Roseville’s Water Repayment Contract or by a Section 215 Contract between Roseville and Reclamation due to ﬂood control operations at Folsom Reservoir, for the purposes of groundwater recharge, that water shall not be counted as diversion water within this PSA, regardless of year type.
• Future projects and investments are described in a point in time and project aspects and details may be subject to change, at Roseville’s sole discretion, to meet its water supply reliability objectives.
• Roseville and other signatories to this agreement, via the RiverArc Project, have proposed to divert water from the Sacramento River rather than diverting from the American River under certain hydrologic conditions. This would allow water to continue to ﬂow down the LAR.

Signatories conceptually endorse this RiverArc Project, subject to environmental analysis of the impact to the Sacramento River. This RiverArc Project will require certain changes to Roseville’s CVP contract, including an additional point of diversion on the Sacramento River. Roseville’s CVP place of use is unchanged at this point in time and still remains within the limits of Roseville.

Signatories will endorse these changes to Roseville’s CVP contract subject to continued endorsement of the RiverArc Project.

Project List and Future Water Supply Reliability Eﬀorts The following projects are key to Roseville looking out to 2040 and are designed to increase water supply reliability for Roseville and have the potential to support the Water Forum’s coequal objectives.

Additional ASR Wells
Additional construction of ASR wells, with four additional ASR wells planned to be completed by the late 2020’s or early 2030’s, which would add 9.2 MGD to Roseville’s groundwater production capacity available for emergency use; with current eﬀorts underway to identify additional inﬁll property that could house more ASR wells in the future. Addition of ASR wells to the service portfolio can be constrained by available land, suitable hydrogeology, and water quality. The number of additional wells, beyond the additional four planned, will be determined based on these constraints, among others.

Raw Water Pipeline
With a joint venture project between PCWA, the U.S. Army Corp of Engineers (USACE), and the City of Roseville, Roseville intends to utilize the Raw Water Pipeline to access the Roseville’s existing American River Middle Fork Project (MFP) raw water supply by constructing a direct pipeline from PCWA’s Foothill Raw Water Pipeline to Roseville’s Barton Road Water Treatment Plant (reducing reliance on the water

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intake at Folsom Reservoir). Roseville anticipates earliest completion of this facility will be the late 2030’s or beyond. This project is intended as a redundant way to access already contracted MFP water supplies and mitigate the potential future risk of “dead pool” conditions at Folsom Reservoir’s intake structure where almost all Roseville’s surface water conveyance capacity is for both CVP and PCWA MFP surface water supplies. This denotes the project in a point in time and project aspects and details may be subject to change to meet this water supply reliability objective.

Treated Water Capacity Improvements
Preliminary feasibility assessments are being conducted to evaluate future treated water capacity improvements in PCWA’s and Roseville’s systems, including shared interties to build more capacity to serve water demands to Roseville, in case there is an emergency, or in the event that Roseville experiences a constriction of water supply deliveries due to “dead pool” conditions at Folsom Reservoir.

This denotes the project in a point in time and project aspects and details may be subject to change to meet this water supply reliability objective.

Projects at Folsom Reservoir
Support water access projects at Folsom Reservoir that increase intake infrastructure redundancy and reduce the risk posed to water supplies by potential future “dead pool” conditions.

The Folsom Reservoir Raw Water Delivery Reliability Project seeks to improve the reliability of delivery of senior water rights by Reclamation pursuant to settlement contracts for CVP water from Folsom Dam to the City of Folsom, Roseville, and SJWD. These three entities (collectively, Partners) share a single municipal and industrial (M&I) water supply intake within Folsom Dam that can become inoperable because of mechanical/structural failure, disaster, or low reservoir water levels. The ARBS, recently prepared by Stantec in collaboration with Reclamation and water purveyors in the region, projected that climate change will likely worsen with associated impacts to the American River watershed, including deterioration of water supply and delivery reliability for the Partners.

The project objectives are to develop engineering alternatives to secure a reliable water delivery system from Folsom Reservoir under a wide range of hydrologic conditions and emergencies to meet the Partners’ demand requirements during:

1. Planned outages for maintenance of Reclamation facilities,

2. Unplanned outages, and

3. Low lake levels potentially occurring under drought conditions.

The Partners have been evaluating multiple alternatives for redundant intake structures and pump stations or siphons located at/or in the vicinity of the Folsom Reservoir. Additional future meetings and eﬀorts between the stakeholders and Reclamation are necessary to arrive at the best-ﬁt solution for the stakeholders, which would further clarify project concepts, implementation logistics, potential cost optimization, funding opportunities, and proponent responsibilities.

RiverArc Project
With investment in the RiverArc Project, Roseville intends to secure 20 MGD (22,403 AFY) of Sacramento River surface water in the 2030’s; and an additional 37 MGD (41,445 AFY) in the 2040’s, as an alternative to diverting water from the American River in dry or drought conditions. Once operational, this project

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could signiﬁcantly reduce diversions from the American River by up to 57 MGD (63,848 AFY). This alternative CVP supply diversion will be delivered via new transmission mains to Roseville’s potable water distribution system in the western side of Roseville. The current project partners are in the very early stages of the project, developing the Environmental Impact Report (EIR) and project description.

An analysis to determine whether Sacramento River water will be available for diversion at this facility under a wide range of hydrologic conditions will be conducted as part of the CalSim modeling portion of the EIR. CalSim is the model used to simulate SWP and CVP operations. These ﬁndings from the EIR should also be incorporated into the ARCAP analysis. The ﬁnal project size and scope will depend on EIR ﬁndings, project costs, and Roseville’s water reliability needs at the time of project implementation.

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City of Sacramento
Purveyor Specific Agreement
Updated: December 19, 2025
The City of Sacramento (City) is committed to supporting good stewardship of the American River watershed and recommits its membership in the Water Forum as a model for this eﬀort. The City will continue its advocacy for the health of the river through actionable, meaningful eﬀorts supporting cold water carry-over at Folsom reservoir, the Modiﬁed Flow Management Standard (MFMS), habitat restoration eﬀorts, a new temperature control device at Folsom, and advocacy at the federal level with our U.S. Bureau of Reclamation (Reclamation) partners to balance the Water Forum coequal objectives.

Achieving the co-equal objectives requires action every year. The City will also continue its commitment to water aﬀordability, water eﬃciency and to “house” the many administrative functions of the Water Forum as a City entity to support the greater good of a healthy watershed. The Water Forum has endeavored to provide “peace on the river” while knowing that a healthy water supply is reliant upon a healthy river.

Purveyor Background
Service Area
The water system began providing service in the City in approximately 1854. Today, the City’s retail water service area covers approximately 63,182 acres within a boundary that is largely contiguous with the City limits. The Sacramento Suburban Water District (SSWD) serves a small portion of City residents and businesses on the eastern side of the City, and the water system serves a number of customers in the unincorporated portion of the County of Sacramento (County) adjacent to the service area of California American Water (Cal Am). The population within both areas is roughly equivalent. The City wholesales water to Cal Am, SSWD, Natomas Uniﬁed School District (NUSD), and Sacramento County Water Agency (SCWA) for service to Sacramento International Airport and Metro Air Park, a 1,320-acre business park, and wheels water to the SCWA for the South Sacramento Zone 40 service area. The diﬀerentiation between the terms “wholesale” and “wheeling” are a function of water rights accounting. In either case, the City is treating and delivering potable water through its distribution system to those customers. In addition to SSWD, Cal Am, and SCWA, additional water agencies such as Tokay Park Water Company, Golden State Water Company, and Florin County Water District share (in whole or in part) the approved place-of-use (POU) to receive surface water from American River entitlements through potential wholesale arrangement.

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The City uses the same surface water treatment facilities, groundwater wells, storage tanks, pumping facilities, and distribution/transmission pipelines to deliver water to retail, wholesale, and wheeling customers. The water system operates as a single network, with supplies from one source of water being interconnected within the system to meet demands.

Water System Facilities
The water system includes two surface-water treatment facilities, groundwater wells, storage facilities, pumping facilities, and distribution/transmission pipelines. The City maintains eight metered wholesale/wheeling connections to adjacent agencies and 21 emergency interties.

Water Treatment Plants
The City treats surface water diverted from the Sacramento and American Rivers through the Sacramento River Water Treatment Plant (SRWTP), while the E.A. Fairbairn Water Treatment Plant (FWTP) treats surface water diverted from the American River.

Sacramento River Water Treatment Plant
Water diversion and treatment from what is now known as the SRWTP began in the early 1900’s. By 1924, with improvements to ﬁltration and chlorination, the capacity was 32 million gallons per day (MGD), followed by a near-term doubling to 70 MGD. The facility treats water diverted approximately one-half mile downstream of the American River conﬂuence with the Sacramento River. A new intake structure was completed in 2004. The most recent major project in 2016 returned SRWTP peak capacity to 160 MGD. The project included rehabilitation and replacement work on the sedimentation basins, high-service pump station, ﬁlters, solid dewatering facilities, and electrical switchgear. Operation of SRWTP at 160 MGD is limited to the period from May 15 to September 30 of each year, which includes the warmer summer months when peak capacity is needed. At other times of the year the treatment is limited to 120 MGD. The actual available capacity of SRWTP may also be adversely aﬀected by drought conditions if low river elevations reduce the operating eﬃciency of supply pumps. A project to rejuvenate aging infrastructure and potentially add advanced water treatment technology to adapt to climate-induced water quality changes is being planned and environmental documentation is being developed, along with potential expansion to meet future demands.

E.A. Fairbairn Water Treatment Plant
The FWTP is located on the American River approximately seven miles upstream of the conﬂuence of the American and Sacramento Rivers. The FWTP began operation in 1964 and has a current design capacity of 200 MGD following an expansion completed in 2005. Currently, the State Water Resources Control Board (SWRCB) Division of Drinking Water (DDW) permitted the FWTP with a capacity of 160 MGD. The facility is further constrained by “Hodge” and “Conference year” conditions (described in greater detail later in this document) that the City agreed to in the original Water Forum Agreement and subsequently added to its binding water rights documentation with the SWRCB. Currently, pursuant to the City's capital infrastructure planning schedule, facility production is maintained at 100 MGD or below. A project to rejuvenate aging infrastructure and potentially add advanced water treatment technology to adapt to climate-induced water quality changes is currently being planned and environmental documentation is being developed.

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Groundwater Wells
The City currently has 22 wells permitted by DDW in the North American Subbasin and the South American Subbasin that are connected to the potable water system, with a current production capacity of approximately 5-20 MGD. The majority of these wells have been in service for 50-80 years and are nearing the end of useful life. The range in capacity is largely a function of recurring maintenance and adaptation to evolving water quality standards. Between 2015 and 2024, the City completed a groundwater infrastructure master plan and Environmental Impact Report for the systematic replacement of nearly all its well inventory. That information is incorporated into approved Groundwater Sustainability Plans in the North and South American Subbasins. Capacity and ﬂexibility of operations is expected to change over time as facilities are replaced. These forecasted changes are also included in the relevant Groundwater Sustainability Plans and developing programs like the Sacramento Regional Water Bank.

The City maintains a policy that irrigation areas of greater than 5 acres consider utilizing non-potable irrigation wells or recycled water for dedicated irrigation purposes. Examples of this can be found at locations such as William Land Park, Sacramento Historic City Cemetery, or Bartley Cavanaugh Golf Course. A small number of City residents and businesses own and operate private wells for onsite use.

The City does not manage, test, control, or meter privately owned wells.

Additional Sources of Water
Two of the City’s previously described wholesale interties are designed to allow both the delivery of water from the City to the adjacent water agency and the receipt of potable water from those agencies to the City. Both facilities are permitted by the State of California. The ﬁrst is with SSWD, which can deliver up to 17 MGD of potable groundwater to the City. The second intertie is with SCWA which can deliver up to 10 MGD of groundwater. The City would look to these facilities to support programs that leave water in the river during periods of water scarcity such as groundwater substitution transfers, leaving surface water in the ecosystem without rediversion under an agreement with the State of California, to augment City-operated supply facilities in the event of an emergency, and to support the development of more robust region-wide conjunctive use programs (e.g., Sacramento Regional Water Bank).

Surface Water Supplies
Between the City’s various surface water entitlements and agreements with other parties, the following table identiﬁes the volumetric limits of its water supplies per City contract with Reclamation. The City also maintains a history of diverting water from the Sacramento River under “Pre-1914” entitlements, but that is exclusive to the Sacramento River. American River entitlements can be taken at the FWTP or the SRWTP facilities. The Sacramento River permit (Permit 992) and two of the four American River permits (Permits 11358 and 11361) provide for the direct diversion of water. Two of the four American River permits (Permits 11359 and 11360) provide for both direct diversion as well as rediversion of previously stored water in various reservoirs from Nimbus to the upper reaches of the American River Basin.

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Table 1. Surface Water Supplies – Projected
Water Source
Projected Water Supply Volume
2025 2030 2035 2040 2045
Sacramento River 81,800 81,800 81,800 81,800 81,800
American River 228,000 245,000 245,000 245,000 245,000
Total 309,800 326,800 326,800 326,800 326,800
Notes: Units are in acre-feet (AF). The above values are non-inclusive of City Pre-1914 water supplies Pre 1914 Rights
Independent of the Sacramento River and American River permits, the City claims and maintains a Pre- 1914 entitlement for 75 cubic feet per second (CFS) with a priority date of 1849. The POU for Pre-1914 rights is not limited in the same fashion as other City permits.

Reclamation Operating Contract
The City’s ability to use its permits for the Sacramento and American Rivers is subject to the provisions of the “Operating Contract Relating to Folsom and Nimbus Dams and Their Related Works and to Diversions of Water by the City of Sacramento,” Contract No. 14-06-200-6497, entered in 1957 by the City and Reclamation. Under the contract, the City agreed to limit its combined diversion under its American River water right permits to a maximum rate of 675 CFS, and a maximum amount that may scale up to 245,000 acre-feet (AF) a year by the year 2030. The City also agreed to limit diversion under its Sacramento River post-1914 water right permit to a maximum rate of 225 CFS and a maximum amount of 81,800 MG per year. This limits the City’s total diversions of Sacramento and American River water under the contract to 326,800 AF per year. In return, the Operating Contract requires Reclamation to operate its facilities to make enough water available in the rivers to enable the agreed-upon diversions by the City. The agreement is permanent and not subject to renewal.

Surface Water and Groundwater Management
The production facilities in the water system are interconnected and operated in a dynamic fashion. The City utilizes its various facilities to meet demands and other water resources mandates. Operational limitations to meet minimum levels of service (e.g., water pressure, water quality, ﬁre suppression support) for customers do exist. So, while certain ﬂexibility exists to shift between sources, it is not without limit.

Generally, the City equally balances surface water operations between the SRWTP and FWTP to optimize level of service delivery to customers and reduce the need for any one facility to operate at unusually high energy load. That said, the City has, and intends to continue, a practice of preferentially shifting from either SRWTP or FWTP to maintain the level of service needs, if one river or another is under pressure, or if raw water quality is notably diﬀerent. The need to deliver clean, safe drinking water with an adequate level of service per all legal, permit, and policy direction of the Sacramento City Council will remain at the forefront of operational decisions of the water system.

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The City includes the instantaneous (Hodge) and annual diversion limitations (Unimpaired Inﬂow to Folsom Reservoir (UIFR) < 400TAF) at FWTP as part of its long-range infrastructure planning.

When conditions allow, the City will reduce overall surface water operations and preferentially shift to groundwater. Drivers for this action may be overall poor surface water hydrologic conditions, opportunities for groundwater substitution transfers that leaves surface water in the ecosystem until delivered to a downstream user, managed actions as part of the Sacramento Regional Water Bank whereby the City will extract groundwater that has previously been recharged and stored in the basin, or a recently approved set of agreements with the State of California to provide the additional surface water for ecosystem beneﬁts without a downstream diverter. To provide a sense of scale, in the drier periods of 2018 and then 2020-2022, City water demand served by groundwater rose from a historic 15- 20% to approximately 35%. This shift beneﬁts the achievement of the coequal objectives and all steps to expand on the ability to make this shift are a priority.

In any set of conditions that indicate a preference to shift toward groundwater, the City engages with local Groundwater Sustainability Agencies to ensure the extraction pattern (either from its own wells or through receipt of groundwater from others) is consistent with local Groundwater Sustainability Plans.

Groundwater substitution transfers and Sacramento Regional Water Bank actions require additional groundwater monitoring to ensure no other user of groundwater is impacted and to further ensure consistency with local groundwater sustainability plans.

With the Regional Water Authority as the leading voice, the City of Sacramento, along with other local purveyors, is supporting the statewide Healthy Rivers and Landscapes Proposal (HRLP) to provide increased river ﬂows during Dry and Critically Dry periods (Sacramento Valley Index D1641) and expand habitat in the Sacramento and San Joaquin Rivers and Bay-Delta. The proposal, if approved by SWRCB, would serve as an implementation pathway for an updated Bay-Delta Plan and would present itself as a priority for the City of Sacramento. In absence of that approval, the City of Sacramento remains obligated to provide environmental ﬂows after a series of agreements were executed in 2023 and 2024 that guarantee a shift from surface water to groundwater when called upon by the State for ecosystem beneﬁts.

In acknowledging the potential beneﬁts of leveraging groundwater as a resource during periods of surface water scarcity, the City also supports maintaining a sustainable groundwater basin in the North and South American Subbasins. Seeking opportunities to recharge that resource requires equal focus if groundwater is to be present when most needed. Maintaining consistency with local Groundwater Sustainability Plans and meeting the requirements of the Sustainable Groundwater Management Act present legal boundaries that the City remains cognizant of.

The City is also an active supporter and participant of the developing “Sacramento Regional Water Bank”, with the Regional Water Authority as the lead organization. The stated goals of the Water Bank program at the writing of this Purveyor Speciﬁc Agreement (PSA) are as follows:
“The GOAL of the Water Bank is to expand conjunctive use, thereby increasing water banking operations throughout the region to:
1) Improve long-term regional reliability and provide statewide water supply opportunities when possible; and

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2) Support healthy ecosystem function on the lower American River” Given the totality of anticipated climate change pressures on water resources, the anticipated need to respond more dynamically to hydrologic conditions, participate in opportunities to leave surface water in the ecosystem until diverted elsewhere, and to ensure the success of the recently executed agreements to make environmental water available without a downstream diverter through shifts to groundwater, the City is taking the following steps:
• Expanding the capacity of City groundwater infrastructure through a comprehensive groundwater well replacement program and identifying connections to others that can assist in leveraging groundwater as a strategic resource to enhance water supply reliability and to provide ecosystem beneﬁts.
• Within the Hodge or Conference year constraints, ensure groundwater recharge actions are occurring in the basin to maintain readiness for the turn to groundwater in the poorer surface water conditions.

To the degree that extremes in weather from wet and cold to dry and hot presented by climate change occur, so too do the needs for ﬂexible operations to adapt to such changing conditions.

The City anticipates future additions to surface water infrastructure. As part of the 2000 Water Forum Agreement, and the expansion of FWTP , the City also committed to the construction of other facilities such as expansion/rehabilitation of the Sacramento River Water Treatment Plant and river intake to assure that a reliable alternative supply (groundwater, pump back, and/or diversion from the Sacramento River) is available whenever it is needed. The City completed a rehabilitation project at SRWTP in 2007, which set aside land for future expansion, and has initiated environmental review for the expansion of SRWTP and other projects (see “Water+” below). Extensive evaluations on the viability of a previously contemplated “pump-back” project, which would have entailed a new intake on the Sacramento River and a large raw water pipeline connecting the new intake with FWTP have identiﬁed that project as infeasible.

Demand Management
The City’s baseline water usage per capita for the purpose of compliance with SBX 7-7 was 282 gallons- per-capita-per-day (gpcd) (years 1996-2005), with a 2020 target of 225 gpcd. At the SBX7-7 compliance date of 2020, the City customer usage was down to 169 gpcd, thereby meeting legislative mandates. For the last several years, the City has hovered around 150 gpcd. This was achieved through a variety of means including an accelerated Advanced Metering Infrastructure (AMI) metering program and expanded water conservation incentive and outreach eﬀorts.

Moving forward, through the Long Term Water Conservation Framework legislation (SB 606 and AB 1668), the State of California has created real-time targets for water suppliers, including the City, that involve a dramatic water use reduction target over the next 15 years tied to a residential indoor water use reduction as well as a landscape water eﬃciency target that involves reporting on landscape water demand as compared to landscape water need as calculated by the State. This system-wide budget- based approach also includes a reduction in water suppliers’ system water loss (gallons per connection per day). To achieve these targets, the City anticipates that it will need to dramatically expand customer participation in its programs and anticipates making reﬁnements to existing programs as well as adding programs that will achieve these requirements. An analysis and prioritization of these potential

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programs is underway and engagement with Water Forum membership is ongoing. Draft and ﬁnal work products will be provided to the Water Forum membership.

Current City conservation programs elements are advertised on the City web page. https://www.cityofsacramento.gov/utilities/water-conservation While subject to change as program eﬀectiveness is evaluated, examples of likely program enhancement beyond existing include:
• Monitoring and analysis of meters dedicated solely to irrigation • High eﬃciency toilet retroﬁt programs
• Landscape rebate programs
• Enhanced leak repair incentive programs
• Enhanced water and energy partnership rebates
• Enhanced residential water surveys
Water+
https://www.cityofsacramento.gov/utilities/projects/waterplus The Department of Utilities in 2021 launched Water+, a program designed to help ensure safe, high- quality drinking water supply for customers. The program will help protect long-term drinking water reliability, resiliency to climate change, and help meet future retail and wholesale water demands of the City of Sacramento POU.

Water+ has several goals, which include:
• Improving water treatment methods to meet changing water quality in the Sacramento and American rivers as well as changing drinking water regulations. • Improving the safety and reliability of the City’s surface water treatment plants -- the E.A.

Fairbairn Water Treatment Plant and the Sacramento River Water Treatment Plant. • Providing consistent drinking water treatment and distribution to City customers. • Increasing water treatment supply and capacity to meet future water demands. • The program will replace and expand aging facilities, improve water treatment methods to be safer and more environmentally friendly, and make overall system improvements.

The ﬁrst phase of Water+ includes the Treatment Plants Resiliency and Improvements Project, which will help improve the long-term safety, reliability and resiliency of the City’s water supply, and address several issues deﬁned in the City’s 2035 General Plan.

The project will feature several water treatment improvements, including:
• Replacing aging infrastructure and facilities that are reaching the end of their useful lives • Improvements to the treatment process at both water treatment facilities • A new Sacramento River water intake structure and new pipelines to SRWTP to allow for increased future diversions and greater reliability of existing diversions • Improvements to water transmission and distribution systems near SRWTP

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River Arc
Concurrent with the planned expansion of SRWTP , a group of local water agencies with the support of select Water Forum environmental members have initiated early planning for a new facility on the Sacramento River. The RiverArc Project is an ecosystem, capacity, and resiliency project that will provide signiﬁcantly improved backup and ﬂexibility to water sources available for City customers, and to surrounding communities. The project would divert water through an existing water intake structure on the Sacramento River to oﬀset water currently planned to be diverted from Folsom Reservoir or from the American River at the Placer County Water Agency (PCWA) pumping plant near the Auburn Dam site.

Reduction of draws from the American River has been identiﬁed as a potential adaptation measure for climate change impacts to the lower American River ecosystem and water supply reliability in the American River watershed as described in the 2022 American River Basin Plan. In 2015 and 2021, Folsom Reservoir levels were very close to not being able to meet minimum municipal water supply intake elevations. The ﬂow of the Sacramento River, which is many times the size of the American River, has the capacity to reduce reliance on the American River.

The RiverArc Project presents a more complex governance structure with multiple participating agencies, is located further from the City’s core water transmission infrastructure, requires additional staﬃng, and may present a reduced ﬁnancial economy of scale that a SRWTP expansion could oﬀer. However, the City recognizes the potential beneﬁts to the region RiverArc could bring to the Water Forum coequal objectives and the potential to support the Water Forum 2050 initiative. At present, the City is focusing on RiverArc as the next diversion and treatment capacity project, ahead of a SRWTP expansion with the understanding and expectation of ongoing Water Forum signatory support.

Current Diversions
Table 2. Current Diversions
Year FWTP SRWTP
Total
Surface
Water Groundwater
Imported
Groundwater
Wholesale/
Wheeling
Total
Retail
Water
Total
Water
2006 62,827 55,848 118,676 18,476 - 6,512 130,640 137,151 2007 46,888 83,568 130,457 19,570 - 12,333 137,694 150,027 2008 56,264 64,029 120,293 20,388 - 8,182 132,499 140,681 2009 53,067 52,669 105,736 20,056 - 6,176 119,616 125,792 2010 53,632 44,594 98,227 18,433 - 5,254 111,406 116,660 2011 41,053 54,738 95,791 18,109 - 5,279 108,621 113,901 2012 44,259 63,452 107,712 14,617 - 8,075 114,253 122,328 2013 48,319 58,336 106,655 12,834 244 2,286 117,447 119,733 2014 31,899 48,903 80,802 14,637 80 262 95,257 95,519
2015 32,155 39,511 71,666 13,706 659 1,199 84,832 86,031 2016 28,523 40,621 69,144 18,008 - 958 86,194 87,152
2017 34,636 32,836 67,472 26,348 - 2,460 91,360 93,820
2018 22,300 40,604 62,904 25,963 4,028 1,027 691,868 92,895 2019 38,477 37,033 75,510 21,869 - 8,465 88,914 97,379
2020 31,337 39,576 70,913 21,140 8,426 3,607 96,872 100,479 2021 23,486 52,021 75,507 18,837 974 4,518 90,800 94,318

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Water Forum Agreement 2050
February 2026 City of Sacramento PSA 179
2022 27,084 34,796 61,880 19,024 6,610 1,777 85,737 87,514 2023 30,437 47,571 78,007 12,232 28 9,589 80,678 90,267 2024 41,096 41,749 82,845 9,858 0 11,102 81,601 92,703
• All values in acre-feet per year
• Diversion and delivery of SCWA water through COS facilities (Wheeling) is only from Sac River facilities

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February 2026 City of Sacramento PSA 180
Future Projected Diversions
Table 3. City of Sacramento Projected Water Demands (from 2020 UWMP)

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February 2026 City of Sacramento PSA 181
Drier Conditions Management
In all years when the California Department of Water Resources (DWR) annual projected unimpaired runoﬀ into Folsom Reservoir is greater than 550,000 AF, or the March through November projected unimpaired inﬂow into Folsom Reservoir is greater than 400,000 AF, the City may divert water at FWTP in accordance with the following criteria.

1. Diversion up to 310 cfs (200 million gallons per day [MGD]) so long as the ﬂow bypassing the diversion at FWTP is greater than the Hodge Flow Criteria46.

Table 4. Hodge Flow Criteria
Period American River Hodge Flow Criteria, cfs
October 15 through February 2,000
March through June 3,000
July through October 14 1,750

2. Whenever ﬂow bypassing the diversion at the FWTP is lower than the Hodge Flow Criteria, City diversions may not be greater than the following:

Table 5. Maximum Rate of Diversion to the FWTP During Hodge Flows Period
Maximum Diversion
cfs MGD
January through May 120 77.6
June through August 155 100.2
September 120 77.6
October through December 100 64.6

City water diverted at FWTP in drier conditions in accordance with the foregoing limitations could be used anywhere within the City’s authorized POU as it exists now and in the future.

Provision for Use of FWTP Design Capacity Over 100MGD
The City added the Hodge restrictions to FWTP to its surface water entitlement in October 2010 following approval of the original Water Forum Agreement. The goal of these restrictions was to ensure adequate ﬂow for the ﬁshery at certain times of the year. This goal is embedded in the Flow Management Standard. The prior Water Forum eﬀort also anticipated a potential pathway for collective support of all caucuses for the removal or amendment of these terms.

If the City and the ongoing Water Forum successor eﬀorts agree that some combination of actions could provide a net beneﬁt to the lower American River and allow for better use of the capacity added to FWTP (over the 100 mgd prior to the ﬁrst Water Forum Agreement) in 2000, the City will have the

46 As no stream flow gauge currently exists in a location coterminous with FWTP , the Fair Oaks gauge, as maintained by USGS, is typically used as a surrogate measurement point.

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Water Forum Agreement 2050
February 2026 City of Sacramento PSA 182
support of all signatories if it chooses to pursue regulatory approvals. The implementation of the MFMS is actively planned into Reclamation’s operations and augments D893-ﬂows as being protective measures consistent with Water Forum coequal objectives and provides an example of improved conditions.

Driest Conditions Management
In extremely dry years (i.e., years in which the DWR annual projected unimpaired inﬂow into Folsom Reservoir would be 550,000 acre-feet annually [AFA] or less, also referenced as the March through November projected unimpaired ﬂow into Folsom Reservoir being less than 400,000 AF) the City would limit its diversions of city water at the FWTP to not greater than 155 cfs and not greater than 50,000 AFA.

Any additional water needs would be met by diversions at other locations and/or other sources.

City water diverted at the FWTP in extremely dry years in accordance with the foregoing limitations could be used anywhere within the City’s authorized POU as it exists now and in the future.

Critically Low Storage Conditions
In conjunction with aforementioned commitments to reduce diversions at FWTP when Hodge Flows are present (see drier year actions) or the March through November projected unimpaired ﬂow into Folsom Reservoir being less than 400,000 AF (see driest year actions), the City will continue to support infrastructure at the FWTP intake structure that will allow operation near the low minimum ﬂow requirement of the MFMS at 500 cfs. 500 cfs passing the FWTP is understood to correlate with the river elevation necessary to meet the minimum design of the intake pumps to avoid adverse operation. The City is committed to this balanced approach which is intended to support conservation of storage in Folsom and a minimum release pattern for ecosystem needs.

Project List
It is understood that to support the coequal objectives and mitigate challenges facing the region under future conditions, structural and non-structural projects will be needed. The City must prioritize projects that maintain the aﬀordability of water in advancing the coequal objectives. The experience of the last couple of decades has shown that the extremes of climate change are the biggest threat to the coequal objectives and that the ability of the City to advocate for improved operations of the State and Federal projects, both internally and through local partnerships to advance conjunctive use, will be the most eﬀective way from a cost and sustainability standpoint, to enhance the achievement of the coequal objectives. Actions can be taken in all years to improve water reliability from the most environmentally beneﬁcial source.

Structural
The following infrastructure projects will support eﬀorts to implement the City’s proposed PSA, and to support the coequal objectives.
• New or improved interties with other purveyors, in particular ones that promote groundwater recharge and conjunctive use and water supply reliability • Rehabilitation and modernization of existing water facilities

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February 2026 City of Sacramento PSA 183
• New or expanded facilities on the Sacramento River (e.g., RiverArc or SRWTP expansion) and treatment, storage, and conveyance systems necessary to provide clean, safe, potable water • New groundwater facilities consistent with adopted groundwater sustainability plans and the City of Sacramento’s completed California Environmental Quality Act (CEQA) process to modernize its groundwater facilities
• Expanded groundwater monitoring infrastructure and data transparency platforms • Projects as deﬁned in basin groundwater sustainability plans • Structural and Non-structural projects and programs to ensure success of the Healthy Rivers and Landscape Program (i.e., Voluntary Agreement) for the American River region or a similar tributary-speciﬁc program that improves the ecosystem, protects local existing water entitlements for participants in that program, and maintains better cold water pool conditions in Folsom and the lower American River.

Non-Structural
• Agreements with neighboring purveyors for conjunctive use opportunities and water supply reliability
• Continued water use eﬃciency programs and funding support for the City, including expanded relationships and/or agreements to facilitate the City’s Climate Action Plan and successful implementation of water use eﬃciency targets
• Water transfers consistent with groundwater sustainability plans and the California Water Code • Points of diversion on Sacramento River for City of Sacramento • Implementation of longstanding contractual agreement for water exchange between City and the Sacramento Municipal Utility District (SMUD) for SMUD’s Rancho Seco water demands • Extension and/or License of Existing Water Entitlements for the City of Sacramento • Support for identifying underground storage as a beneﬁcial use of surface water • Changes in water rates and fees, as compliant with legal requirements to support projects consistent with the coequal objectives (e.g., water eﬃciency, climate change adaptation projects, and water supply reliability projects)
• Continued staﬃng support, when requested, for implementation of lower American River ecosystem projects (e.g., Machine Operators)
• Additional funding support from the City for science and ecosystem beneﬁts as part of the 2024 Healthy Rivers proposal to SWRCB or a tributary-speciﬁc alternative for the American River region
• Local and Statewide advocacy for the MFMS on the lower American River and improved carryover storage within Folsom Reservoir

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February 2026 City of Sacramento PSA 184
• Management actions as deﬁned in basin groundwater sustainability plans • Periodic 5-year groundwater sustainability plan evaluations and updates, compliant with SGMA • Consolidation of water districts as approved by the State of California Caveats and Assurances

1. All signatories to the Water Forum Agreement will fully endorse City of Sacramento water entitlements for the beneﬁt of the coequal objectives. This includes the use thereof and extension and/or license under SWRCB procedures. If the SWRCB or the Legislature proposes global changes to water rights, each Water Forum member may decide what position to take on the proposal without rescinding agreed upon support for City of Sacramento water entitlements for the beneﬁt of the coequal objectives.

2. Recognizing the commitments executed by the City of Sacramento in the ﬁrst Water Forum Agreement, including changes made to its water entitlements, and in recognition in the 2000 Water Forum Agreement of full signatory support for City of Sacramento projects to divert, treat, and serve from the Sacramento River, all signatories continue to endorse this eﬀort with the following detailed delineations:
a. Fully endorse (as deﬁned in the Process for Project Endorsement section of the Water Forum 2050 Agreement) the City’s Water+ Project, including the diversion, treatment, storage, and conveyance systems necessary to provide clean, safe, potable water, as well as the funding and processes necessary to implement this project. The Project will partially recover diversion impacts to City stemming from the ﬁrst Water Forum, and as contemplated by the 2000 Water Forum.
https://www.cityofsacramento.gov/utilities/projects/waterplus b. Fully endorse City of Sacramento eﬀorts to develop environmental documentation of the RiverArc project and conditionally endorse (as deﬁned in the Process for Project Endorsement section of the Water Forum 2050 Agreement) the implementation of the RiverArc Project, subject to environmental analysis of the impact to the Sacramento River for the City of Sacramento, including the points of diversion modiﬁcations, diversion, treatment, storage, and conveyance systems necessary to provide clean, safe, potable water, as well as the funding and processes necessary to implement this project. Upon completion of CEQA analysis all signatories agree that an oﬃcial determination on full endorsement will occur and Water Forum documentation and positions of support will be updated to reﬂect this determination no later than six months from publications of environmental Notice of Determination or equivalent ﬁling. It is the intention of all signatories to fully endorse this project if the environmental analysis and Notice of Determination remain consistent with the Notice of Preparation and the outcomes sought in support of the Water Forum objectives. The City intends to provide outreach engagement to the Water Forum on project development and analyses prior to completion of the CEQA analysis.
https://www.cityofsacramento.gov/utilities/projects/riverarc

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Water Forum Agreement 2050
February 2026 City of Sacramento PSA 185

3. All signatories conceptually support (as deﬁned in the Process for Project Endorsement section of the Water Forum 2050 agreement) all other structural and non-structural projects contained within this PSA and the funding and processes necessary to implement them with the exception of two non- structural projects identiﬁed above: 1) Groundwater Substitution Transfers, and 2) Implementation of contractual agreement for water exchange between City and SMUD.

4. Endorsement of water entitlements in this PSA means that signatories will expend reasonable eﬀorts to:
a. Speak before stakeholder boards and regulatory bodies, b. Provide letters of endorsement,
c. Provide supportive comments to the media

5. The City of Sacramento acknowledges concern of some signatories that voluminous requests for endorsement for routine operational and maintenance activities could apply pressure to limited resources. The City of Sacramento does not expect to pursue full endorsement for all projects with conceptual endorsement per this PSA. The City will maintain sensitivity to fellow members’ capacity and will limit requests for full endorsement to the most impactful matters contained with this PSA and the related work of the Water Forum.

6. All signatories will support the funding of the City’s water utility operations and capital investment/reinvestment. Endorsement of funding in the context of this PSA is not intended to limit future Water Forum engagements on how rates and fees are determined within applicable laws.

7. Any solution that provides for future needs will have costs. New diversion, treatment, and distribution facilities, wells, conservation programs, and required environmental mitigation will be needed. This PSA identiﬁes that these solutions must be equitable, ﬁscally responsible, and make the most eﬃcient use of the public’s money. Prioritizing aﬀordability of these programs and alignment with state laws surrounding appropriate use of water rate-payer dollars is supported by all signatories.

8. Water suppliers have both capital costs for facilities and operations and maintenance costs. This PSA recommends that charges imposed to recover capital costs associated with water acquisition, treatment, or delivery be equitable. Any costs for facilities funded through bonds will be recovered as provided by law. In addition, signatories to the Water Forum Agreement agree that operational, maintenance, and replacement costs should be recovered from beneﬁciaries of the system in accordance with California Government Code Sections 53720 to 53730 (Proposition 62) and California Constitution, Articles XIII, C and XIII, D (Proposition 218) and other laws to the extent they are applicable.

9. All parties acknowledge that language or commitments within this PSA may ﬁnd themselves in conﬂict with other documents or regulatory proceedings/direction. Where inconsistencies occur, legally binding documents (e.g., water rights) or direction from regulatory bodies shall govern.

Additionally, the Water Forum and versions of the Water Forum 2050 Agreement do not supersede local, state, or federal boards, councils, commissions, or regulatory entities governing water suppliers, or does it present itself as a regulatory body or legally binding agreement.

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Water Forum Agreement 2050
February 2026 City of Sacramento PSA 186

10. PSA language will have priority over any language in the main Water Forum 2050 Agreement should there be an interpretation that deems the language in the two documents to be in conﬂict.

11. All Signatories 1) conceptually endorse City of Sacramento alignment of its water operations in support of the Sacramento Regional Water Bank and relevant groundwater sustainability plans, and 2) fully endorse the City’s focus to invest in a resilient water system that can be adjusted to advance the Water Forum coequal objectives.

12. Parties shall acknowledge and accept that the Sacramento City Council recently adopted an updated Climate Action & Adaptation Plan and that nothing within this agreement is intended to supersede that action or any successor. Included within that plan is the following: “An environment that feels healthy, with clean air, clean water, and ample access to parks, trees, and other green spaces,” is the key to a truly livable city.

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Water Forum Agreement 2050
February 2026 City of Sacramento PSA 187
Attachment 1 – City of Sacramento Place of Use 2024

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Water Forum Agreement 2050
February 2026 East Bay Municipal Utility District PSA 188

East Bay Municipal Utility District
Purveyor Specific Agreement
Updated: January 8, 2026
Purveyor Background
East Bay Municipal Utility District (EBMUD) supplies water and provides wastewater treatment for a large part of Alameda and Contra Costa counties. Based on 2010 census data and Association of Bay Area Government’s (ABAG) Projections 2040, approximately 1.4 million people are currently served by EBMUD’s water system in a 332-square-mile area extending from Crockett on the north, southward to San Lorenzo and portions of Hayward (encompassing the major cities of Oakland and Berkeley), eastward from San Francisco Bay to Walnut Creek, and south through the San Ramon Valley (including Alamo, Danville, and San Ramon). The wastewater system serves approximately 740,000 people in an 88- square-mile area of Alameda and Contra Costa counties along the Bay’s east shore, extending from Richmond in the north, southward to San Leandro. EBMUD water customers include residential, industrial, commercial, institutional, and irrigation water users. A map of EBMUD’s service area is included in Figure 1, sourced from EBMUD’s 2020 Urban Water Management Plan (UWMP).

Surface Water and Groundwater Management
Supply Portfolio
In non-drought years, EBMUD primarily serves its customers using Mokelumne River water, local runoﬀ collected in the East Bay reservoirs (San Pablo, Upper San Leandro, and Briones), and recycled water for non-potable uses. During droughts, EBMUD’s water supplies are supplemented by diversions from the Freeport Regional Water Authority (FRWA) Intake on the Sacramento River.

Mokelumne River
The Mokelumne River serves a variety of uses, including agriculture, ﬁsheries, hydropower, recreation, and municipal and industrial use. EBMUD has water rights that allow for delivery of up to a maximum of 325 million gallons per day (MGD) from the Mokelumne River, subject to the availability of Mokelumne River runoﬀ and numerous ﬂow release obligations. EBMUD’s Mokelumne River ﬂow commitments are determined by hydrology, water rights priorities, agreements with state and federal regulatory agencies, California State Water Resources Control Board (SWRCB) orders and decisions, federal directives, court decrees, and numerous agreements between EBMUD and other Mokelumne River users, both upstream and downstream of EBMUD’s Mokelumne River facilities.

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February 2026 East Bay Municipal Utility District PSA 189

Figure 1. EBMUD Water Supply System (from EBMUD’s 2020 Urban Water Management Plan)

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Water Forum Agreement 2050
February 2026 East Bay Municipal Utility District PSA 190 To comply with the requirements of the 1998 Joint Settlement Agreement (JSA) among EBMUD, U.S. Fish and Wildlife Service (USFWS), and the California Department of Fish and Wildlife (CDFW), EBMUD continues to meet its ﬂow commitment to protect the lower Mokelumne River by providing in-stream ﬂow releases from EBMUD’s Camanche Dam to improve ﬁshery conditions. The Mokelumne River provides important habitat for fall run Chinook salmon, which migrate from the ocean and reach the Mokelumne in late summer and early fall to spawn. In the spring, the juvenile salmon then migrate to the ocean, grow, and ultimately return to the Mokelumne two to three years later to spawn. Salmon spawn in the river below Camanche Dam and many also enter the Mokelumne River Fish Hatchery located at the base of EBMUD’s Camanche Dam, where eggs are collected, fertilized, incubated, and raised for release in the spring. The Mokelumne River also supports a population of Federally Threatened Central Valley Steelhead. Both the River and Hatchery support the listed population, and based on a robust science plan in recent years steelhead numbers have been trending upward, signifying successful management of the species through collaboration between EBMUD and the ﬁsh agencies.

In collaboration with the CDFW , the USFWS, and the National Marine Fisheries Service, EBMUD uses many strategies to protect and enhance Mokelumne River ﬁsheries resources. These strategies include spawning and rearing habitat restoration, screening riparian diversions, conducting a comprehensive science program, and investing in one of the most modern and productive salmon hatcheries in the Central Valley. Additionally, Mokelumne origin salmon comprise approximately 20% to 50% annually of the recreational and commercial catch oﬀ the California Coast.

Since implementation of the JSA ﬂow releases and temperature management practices, the Mokelumne River’s average salmon returns to the river have more than doubled from 3,636 (1940 to 1997 average) to 11,164 (1998 to 2024 average). Figure 2 shows the increase in returns of fall-run Chinook Salmon over time, with a record of over 35,000 ﬁsh in the 2024 season.

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Water Forum Agreement 2050
February 2026 East Bay Municipal Utility District PSA 191

Figure 2. Returns of fall-run Chinook Salmon over time
East Bay Area Watershed and Hydrology Runoﬀ Characteristics EBMUD’s secondary water supply source is local runoﬀ from the East Bay area watersheds, which is stored in the terminal reservoirs within EBMUD’s service area. The availability of water from local runoﬀ depends on two factors: hydrologic conditions and terminal reservoir storage availability. In dry and critically dry years, evaporation can exceed runoﬀ, resulting in net loss of local supply. Local runoﬀ supplies the East Bay, on average, 23 MGD during normal hydrologic years.

Recycled Water
EBMUD’s recycled water program has grown signiﬁcantly since EBMUD began using recycled water at its Main Wastewater Treatment Plant (MWWTP) in 1971. The program has expanded to provide more recycled water to a diverse array of customers for a variety of non-potable uses. EBMUD has also worked to develop partnerships with other wastewater treatment entities to make recycled water available more broadly in its water service area. Regional partnerships like the Dublin San Ramon Services District– EBMUD Recycled Water Authority have broadened the recycled water customer base, and EBMUD has led or participated in research studies related to recycled water.

In calendar year 2020, EBMUD provided approximately 8.3 MGD of recycled water to customers for a variety of non-potable uses. Based on EBMUD’s current assumptions about which projects it is likely to implement, Table 1 (from EBMUD’s 2020 UWMP) shows the projected quantity of recycled water use by speciﬁc type for the years 2020-2045.

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Water Forum Agreement 2050
February 2026 East Bay Municipal Utility District PSA 192 Table 1. EBMUD Projections of Recycled Water Service Through 2045 (from 2020 EBMUD UWMP) Project Recycled Water Deliveries (MGD)
Existing Projects 2025 2030 2035 2040 2045
North Richmond Reclamation Plant 3.5 3.5 3.5 3.5 3.5
Richmond Advanced Recycled Water (RARE) 3.6 3.6 3.6 3.6 3.6 East Bayshore Recycled Water Project, Phase 1A 0.14 0.15 0.15 0.15 0.15 San Ramon Valley Recycled Water Project, Phase 1 1.04 1.04 1.04 1.04 1.04 Recycled Water Truck Program 0.002 0.002 0.002 0.002 0.002 Chuck Corica Golf Course Complex 0.05 0.05 0.05 0.05 0.05 Total Existing Recycled Water Use 8.28 8.29 8.29 8.29 8.29 Future Projects 2025 2030 2035 2040 2045
Diablo Country Club Satellite 0.22 0.22 0.22 0.22 0.22
San Ramond Valley Recycled Water Project 0.71 0.98 1.3 1.3 1.3 Phillips 66 Reﬁnery Recycled Water Project 0 2.6 3.7 3.7 3.7 East Bayshore Recycled Water Project, Phase 1 0.04 0.05 0.05 0.05 0.05 East Bayshore Recycled Water Project, Phase 2 0 0.25 2.1 2.1 2.1 Richmond Advanced Recycled Water (RARE) / North
Richmond
0 0 0 3.84 3.84
Other Potential Projects 0.25 0.25 0.5 0.5 0.5
Total Future Projections 1.22 4.35 7.87 11.71 11.71
Total Recycled Water Projected Demand 9.50 12.64 16.16 20.00 20.00 Supplemental Water Supplies Potentially Available during Drought • Dry-year only Central Valley Project (CVP) contract with the American River Division o EBMUD is contractually entitled to request CVP water when EBMUD projects end-of- September total system storage (TSS) below 500 thousand acre-feet (TAF). Water is limited to maximum 133 TAF in a year, and 165 TAF over three years, subject to reduction for unavailability under applicable U.S. Bureau of Reclamation (Reclamation) policies.
o Although EBMUD is an American River Division contractor, EBMUD’s diversion point is located on the Sacramento River downstream of the American River conﬂuence, and EBMUD may receive water from any source available to the CVP . • Water Forum releases from Placer County Water Agency (PCWA) • Yuba Accord reservoir reoperation transfers
• Short-term crop idling transfers with Sacramento Valley irrigators • Expanded San Joaquin County groundwater banking project in the Eastern San Joaquin Groundwater Subbasin

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Water Forum Agreement 2050
February 2026 East Bay Municipal Utility District PSA 193 o EBMUD is currently developing a project in collaboration with local partners. The project yield is being evaluated.
• Existing Bayside well to be decommissioned in Fiscal Year 2026 but a new well may be constructed (up to 2 MGD over 6 months) if necessary to meet future water needs.

Distribution System Features of Note
Points of diversions
• Pardee Reservoir
• Freeport Regional Water Authority Intake
• Terminal Reservoirs (See Table 3 sourced from EBMUD’s 2020 UWMP) Reservoirs
• See Tables 2 and 3 below from EBMUD’s 2020 UWMP .

Raw Water Interties
• Contra Costa Water District (CCWD)-EBMUD Raw Water Intertie o EBMUD to CCWD: 90 MGD
o CCWD to EBMUD: Operationally infeasible without infrastructure improvements Emergency Potable Water Interties (not currently authorized for drought emergencies) • 30 MGD San Francisco Public Utilities Commission-City of Hayward-EBMUD Potable Intertie • Small diameter potable interties with City of Hayward, CCWD, and Dublin San Ramon Services District
Note: EBMUD's potable interties are generally authorized for emergencies such as earthquake, ﬂood, landslide, or other major accident. Currently, there is limited opportunity to use these interties in drought scenarios. Many of the interties are small diameter and neighboring agencies have limited hydraulic capacity to send water to EBMUD. EBMUD's raw water intertie with Contra Costa Water District is the largest of the interties and is not limited to emergencies.

Groundwater infrastructure
• Demonstration Recharge Extraction and Aquifer Management (DREAM) pilot project booster pump station, 700 gpm capacity (was used to support injection of extracted groundwater into the Mokelumne Aqueducts and may be used to support an expanded groundwater banking project in the future).

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Water Forum Agreement 2050
February 2026 East Bay Municipal Utility District PSA 194 Table 2. EBMUD Water Supply System Characteristics
Reservoir Data
Capacities (Dead Storage1)
Mokelumne River Facilities
Pardee (Licensed Capacity) 209,950 AF (12,200 AF)
Camanche (Permitted Capacity) 431,500 AF (4,000 AF)
Service Area Facilities
Local Terminal Reservoirs (East Bay) 151,670 AF (17,500 AF) Aqueduct Data
Gravity Flow Pumped Flow
Maximum Capacity Total2 202 MGD 325 MGD
Aqueduct 1 (65-inch) 41 MGD 67 MGD
Aqueduct 2 (67-inch) 54 MGD 87 MGD
Aqueduct 3 (87-inch) 107 MGD 172 MGD
Hydropower Plant Capacities (Nameplate)
Power Generation
Pardee 23.6 MW
Camanche 10.7 MW
NOTES:

1. Dead storage capacity is deﬁned as the volume of a reservoir below the level of the lowest outlet.

2. Aqueduct capacity is dependent on Pardee elevation. Higher ﬂow rates (up to 325 MGD maximum capacity) require pumping at the Walnut Creek Pumping Plant.

AF = acre-feet; MGD = million gallons per day; MW = megawatts Table 3. Total System Storage (TSS), Total Operational Storage, and Terminal Reservoir Water Sources Mokelumne River Facilities Capacity (AF)
Pardee 203,795
Camanche 417,120
Subtotal 620,915
Terminal Reservoirs Water Sources Capacity (AF)
Briones Mokelumne Aqueducts, Bear Creek 58,960
Upper San Leandro Mokelumne Aqueducts, San Leandro Creek and tributaries
38,905
San Pablo Mokelumne Aqueducts, San Pablo Creek,
Bear Creek, and Briones Reservoir
38,600
Chabot Mokelumne Aqueducts, San Leandro Creek,
Upper San Leandro Reservoir, Miller Creek
10,350
Lafayette Lafayette Creek1 4,250
Subtotal 151,065
Total System Storage 771,980
Inaccessible Volume 74,500
Total Operational Storage 697,480
NOTES:

1. The raw water line for the Mokelumne Aqueducts was disconnected from the reservoir in 1971.

AF = acre-feet

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February 2026 East Bay Municipal Utility District PSA 195 Current and Projected Demands
Current and projected demands are provided in Table 4 below from EBMUD’s 2020 UWMP . Table 5 from EBMUD’s 2020 UWMP presents the demands in context of EBMUD’s need for water during droughts given the water supplies previously described.

Table 4. Average Annual Water Demand Forecast – 2050 Demand Projections (MGD) 2020 2025 2030 2035 2040 2045 2050
Forecasted Water Demand 238 245 254 264 277 287 297
Water Conservation1 -48 -53 -58 -61 -63 -65 -66
Recycled Water1 -5 -6 -6 -9 -13 -13 -13
Raw Water -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
Planning Level of Demand (Rounded) 181 186 190 194 201 209 218

1. See 2020 EBMUD UWMP Chapters 6 and 5 for program details on conservation and water recycling, respectively. The goals reﬂected in this table consider the uncertainty described in Section 5.2.3 and Section

6.1.3 of the 2020 EBMUD UWMP .

Table 5. Supply & Demand Assessment, 2020 – 2050
EBMUD Planning Level of Demand (PLOD) 2020 2025 2030 2035 2040 2045 2050 Normal Year
Mokelumne Supply (MGD) >181 >186 >190 >194 >201 >209 >218 EBMUD PLOD (MGD) 181 186 190 194 201 209 218
Need For Water (TAF) 0 0 0 0 0 0 0
Single Dry
Year
Mokelumne Supply (MGD) 121 126 129 132 138 144 151
CVP Supplies (MGD) 60 60 60 60 60 60 60
Total Supplies (MGD) 181 186 189 192 198 204 211
Voluntary Rationing (%) 0 0 1 1 2 2 3
Need For Water (TAF) 0 0 0 0 0 0 0
Second Dry
Year
Mokelumne Supply (MGD) 82 86 89 92 98 104 111
CVP Supplies (MGD) 74 74 74 74 74 74 74
Total Supplies (MGD) 156 161 164 167 172 178 185
Mandatory Rationing (%) 13 13 13 14 14 14 15
Need For Water (TAF) 0 0 0 0 0 0 0
Third Dry
Year
Mokelumne Supply (MGD) 141 145 146 145 132 118 108
CVP Supplies (MGD) 12 12 12 12 12 12 12
Total Supplies (MGD) 153 157 158 157 144 130 117
Mandatory Rationing (%) 15 15 15 15 15 15 15
Need For Water – Base Condition
(TAF) 0 0 0 0 28 52 75
Need For Water – High Demand
Condition (TAF) 0 0 21 35 60 97 125
Need For Water – Extreme
Drought Condition (TAF) 0 0 0 13 32 55 84

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February 2026 East Bay Municipal Utility District PSA 196 Sustainable Groundwater Management Act (SGMA)
EBMUD has interests in two groundwater subbasins: the East Bay Plain Subbasin and the Eastern San Joaquin Groundwater Subbasin. Details are provided below.

East Bay Plain Subbasin
As a result of three legislative bills (Assembly Bill 1739, Senate Bill 1168, and Senate Bill 1319) signed into law in September 2014 and collectively known as SGMA, EBMUD initiated stakeholder outreach eﬀorts in 2015 to identify eligible local agency interests in the formation of a Groundwater Sustainability Agency (GSA) for the East Bay Plain Subbasin. Stakeholders requested EBMUD to take the lead in SGMA compliance eﬀorts and form a GSA as EBMUD was deemed suited to undertake the SGMA compliance responsibilities. On November 29, 2016, EBMUD became an exclusive GSA for the portion of the East Bay Plain Subbasin which underlies its service area pursuant to Water Code §10723.8(c) and (d). The City of Hayward is the GSA for the portion of the East Bay Plain Subbasin that underlies its service area.

In January 2022, EBMUD and City of Hayward collectively adopted and submitted the East Bay Plain Subbasin Groundwater Sustainability Plan (GSP), fulﬁlling the requirements established under SGMA.

The GSP establishes management actions that ensure the East Bay Plain Subbasin is sustainable within 20 years of implementation. EBMUD and the City of Hayward are responsible for implementing the GSP management actions.

Eastern San Joaquin (ESJ) Groundwater Subbasin
EBMUD and partners in Eastern San Joaquin County completed the DREAM Pilot Project, a pilot groundwater banking project, to determine whether a larger groundwater banking project is feasible in the ESJ Subbasin. A larger groundwater banking project has been identiﬁed in the ESJ Groundwater Sustainability Plan as a Potential Project to achieve groundwater sustainability.

Groundwater Banking
Groundwater banking eﬀorts are currently focused in Eastern San Joaquin County where the DREAM Pilot Project was located.

The DREAM Pilot Project provided North San Joaquin Water Conservation District (NSJWCD) with up to 1,000 AF of EBMUD surface water from the Mokelumne River that participating landowners used for irrigation in lieu of pumping groundwater from the ESJ Subbasin; thereby, storing groundwater for future use. During dry years, EBMUD could recover up to half of the banked groundwater for use within its service area. The DREAM Pilot Project provided multiple beneﬁts, including replenishment of the critically-over drafted ESJ Subbasin and dry year supplemental water supply for EBMUD. See Figure 3 for a visual depiction of the DREAM Pilot Project.

Pending further evaluation of the results of the DREAM Pilot Project and planning level evaluation for an expanded groundwater banking project, EBMUD, NSJCWCD, San Joaquin County, and the Eastern Water Alliance may pursue a larger, longer-term groundwater banking project. The expanded project capacity is currently planned for EBMUD to deliver up to 3 to 8 TAF Mokelumne River water to project partners for recharge depending on EBMUD water supply conditions. Due to the project location, the American River watershed is not anticipated to be impacted by the expanded project.

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February 2026 East Bay Municipal Utility District PSA 197

Figure 3. DREAM Pilot Project
Demand Management
EBMUD commits to meeting the current conservation and water use eﬃciency regulations, which include the 2024 “Making Conservation a California Way of Life” regulations, Assembly Bill (AB) 1572 related to irrigation of non-functional turf with potable water, and the Model Water Eﬃcient Landscape Ordinance (MWELO) which encourages low-water use and native landscaping for new development.

EBMUD will meet the aforementioned requirements by continuing to implement a combination of customer education, incentive programs, and eﬃciency improvements.

The Water Conservation Strategic Plan will guide EBMUD over the next few decades to encourage water conservation and invest in solutions which boost water conservation. The key components of its demand management portfolio are:
• Supply Side Conservation (leak detection, water loss reduction, pressure management, replace leaky pipes)
• Water Management Services (Online water consumption portal for customers, water budget reports, single family and multi-family housing consultations, WaterSmart certiﬁcations, and more)

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February 2026 East Bay Municipal Utility District PSA 198 • Research and Development (partnership with UC Davis and California Water Eﬃciency Partnership)
• Rebates and Incentives (low-ﬂow plumbing hardware, landscape conversion, irrigation equipment, ﬂowmeters, grey-water, landscape design assistance grant, mulch coupons, custom rebates for large projects)
• Education and Outreach (EBMUD website education materials, marketing, community events, WaterSmart Gardener program and demonstration garden grants, K-12 classroom materials) The estimated water conservation through 2050 by implementing the Water Conservation Strategic Plan is shown below in Figure 4.

Figure 4. Forecasted EBMUD Water Conservation (Million Gallons per Day) Climate Change
EBMUD recognizes climate change is a growing threat to the reliability of water resources. In preparation for the future uncertainties associated with climate change, EBMUD has undertaken a rigorous evaluation of potential impacts.

EBMUD continually considers climate change impacts and takes actions to understand, mitigate, and adapt to those impacts. EBMUD maintains a Climate Change Monitoring and Response Plan (CCMRP) to inform planning eﬀorts for future water supply, water quality, and infrastructure, and to support water and wastewater infrastructure investment decisions. Assessments were made to identify potential impacts to EBMUD in the areas of water supply and demand, water quality and the environment, ﬂood control management, infrastructures, and energy:
• In water supply, decreased runoﬀ and timing of runoﬀ poses impacts to carryover storage.

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February 2026 East Bay Municipal Utility District PSA 199 • Water demand and usage could increase as a result of warmer climate, as well as result in increased frequency of rationing due to water supply shortages. • Water quality could decrease as a result of warmer air temperatures shifting in spring runoﬀ, and increasing peak runoﬀ. Managing cold water pool levels in Camanche and Pardee Reservoirs becomes more challenging with more frequent dry water year types and warming rivers and reservoirs. Any modiﬁcations to temperatures in the river could lead to impacts to ﬁsheries. • Rising sea levels could lead to increase in storm surge ﬂood events, thereby posing challenges for ﬂood control management due to the timing of the runoﬀ and increased peak runoﬀ. Sea level rise could damage infrastructure in the Delta and near the shore; primary concerns for EBMUD include the potential inundation of the Mokelumne Aqueducts from levee failure/overtopping in the Delta.
• Lastly, climate change could negatively aﬀect hydropower generation as a result of changes in runoﬀ timing and patterns, and management of cold water pool. The electricity transmission lines could lose transmitting capacity in high air temperatures, and there is an increase in the probability of wildﬁre exposure for some major transmission lines.

Managing Severe Droughts
EBMUD’s Drought Management Program (DMP) provides a framework to manage customer demand and pursue a diversiﬁed portfolio to reach a goal of providing 85-percent reliability for customers in EBMUD’s service area while continuing to meet all stream ﬂow obligations on the lower Mokelumne River. The DMP guided EBMUD in managing demand and supply during the 2014-2016 and 2020-2022 droughts when mandatory and voluntary rationing was imposed, and water supplies were limited. During both the 2014-2016 and 2020-2022 droughts, EBMUD faced unanticipated constraints and updated and implemented measures to assist with demand and supply management. The DMP was revised to reﬂect lessons learned and actions that were taken.

The triggers to implement water shortage response action are deﬁned by the Total System Storage (TSS) as illustrated in Figure 5. Table 6 shows the types of programs and actions that EBMUD might undertake at each stage of drought.

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February 2026 East Bay Municipal Utility District PSA 200

Figure 5. EBMUD Drought Management Program Guidelines
Table 6. Drought Management Program Elements by Stage for TSS Scenario EBMUD
Drought Stage Drought Program Elements Considered
Stage 1
Moderate
Voluntary
0-10% Rationing
• Apply Stage 1 Drought Surcharge
• Establish voluntary water use reduction goals and determine use restrictions
• Initiate a public information campaign to explain the water supply situation and customer responsibilities
• Outreach and education may include EBMUD’s website, social media, media outreach, advertising, workshops and events, bill inserts and bill messaging
• Initiate community water waste hotline and online water waste reporting • Issue up to 50,000 single family residential (SFR) home water reports • Provide commercial and residential landscape water budgets to up to 5,000 accounts
• Provide conservation audits and WaterSmart home survey kits • Issue up to 5,000 indoor plumbing ﬁxture and appliance rebates • Conduct water audits
• Provide up to 5,000 free water saving devices
• Expand water loss control program (e.g. acoustic loggers, leak detection crew)
Stage 2
Signiﬁcant
Mandatory
10-15%
Rationing
In addition to elements of Stage 1:
• Apply Stage 2 Drought Surcharge
• Continued outreach and education
• Provide online EBMUD store ordering (restaurant and hotel tent cards, stickers)
• Increase SFR home reports to 75,000 households

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February 2026 East Bay Municipal Utility District PSA 201 EBMUD
Drought Stage Drought Program Elements Considered
• Increase commercial and residential landscape water budgets to 25,000 accounts
• Issue up to 10,000 free water savings devices
Stage 3
Severe
Mandatory
15% Rationing
In addition to elements in Stage 2:
• Apply Stage 3 Drought surcharge
• Advanced media outreach/response
• Advance customer outreach & education
• Consider water saving campaigns, challenges
• Consider supplementing education and outreach with website tools and information; outdoor, radio, publications, and online advertising; drought theaters or other education for children; contests and pledges; promotional items, signs, drought newsletters, customer outdial messages, postcard mailings, etc.
• Institute Excessive Use Penalty for SFR customers with use > 60 ccf/month • Initiate supersaver recognition program
• Increase SFR home reports to 100,000 households
• Increase commercial and residential landscape water budgets to 50,000 accounts
• Issue up to 7,000 indoor plumbing ﬁxture and appliance rebates • Issue up to 8,000 outdoor landscape & irrigation rebates • Issue up to 15,000 free water savings devices
• Provide ﬁeld enforcement of regulations and water use restrictions Stage 4
Critical
Mandatory
≥15% Rationing
In addition to elements in Stage 3:
• Apply Stage 4 drought surcharge
• Institute Excessive Use Penalty for SFR customers with use >40 ccf/month • Increase SFR home reports to 325,000 households
• Increase commercial and residential landscape water budgets to 150,000 accounts
• Issue up to 2,000 free water savings devices
Note:

This table is based on the Drought Management Program adopted by EBMUD’s Board of Directors on 06/22/2021 and revised on 07/01/2025. EBMUD may revise the DMP elements from time to time.

The availability of water to EBMUD may be impacted depending on the nature of an emergency. In such cases, EBMUD would determine the applicable shortage response actions with reference to its Water Shortage Contingency Plan.

For example, the shortfall in Year 3 of a drought at 2050 demands as presented earlier in the Supply & Demand Assessment results on Table 5 would be mitigated by a combination of water transfers, San Joaquin County groundwater banking (potential expanded DREAM project), and future non- potable/potable reuse. This is in addition to demand rationing and EBMUD's CVP contract. EBMUD is

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February 2026 East Bay Municipal Utility District PSA 202 currently updating the Need for Water as part of the 2025 Urban Water Management Plan. Updates to this PSA document will be made as needed during the Water Forum 2050 comprehensive 5-year reviews.

Water Code Section 10632 requires water shortage contingency plans to provide water supply shortage levels at 10, 20, 30, 40, 50, and >50 percent thresholds. Urban water suppliers with existing water shortage contingency plans may meet this requirement by cross-referencing the water utility’s existing water shortage stages to the State of California’s six standard water shortage levels. In general, EBMUD brings in supplemental supply water and requests customers to reduce demand when the total operational storage is reduced by almost one-third. Table 7 presents EBMUD's water shortage levels cross-referenced with the State’s new standardized water shortage levels. EBMUD's water shortage levels for this cross-referencing are determined by the total operational storage available.

Table 7. Shortage Levels Cross-Referenced With State’s Shortage Stages

It is diﬃcult to quantify the reduction in gap between supplies and demand due to the implementation of the response actions as outlined in Table 6. The response actions would be adjusted based on the level of rationing that is achieved and to meet EBMUD's policy of providing 85% reliability to its customers. At each stage, EBMUD will consider augmenting its supplies as outlined in Figure 5 with the quantities determined based on antecedent conditions and projected demand. The response actions to close the gap between supply and demand as well as the augmented supplies needed that year are outlined in the annual water supply availability assessments.

EBMUD CVP Contract
In years when EBMUD is authorized to take water under the terms of its CVP contract, which is limited only to speciﬁed water storage conditions, Reclamation allocates the water in the same manner as it does for other north-of-Delta American River Division municipal and industrial contractors. Like other CVP contractors, EBMUD’s service area is included within the consolidated place of use for all the CVP

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February 2026 East Bay Municipal Utility District PSA 203 water rights. EBMUD is willing to discuss this matter further during the American River Climate Adaptation Program process if requested by the Environmental Caucus.

Management and Protection of the Mokelumne River
As part of its Strategic Plan, EBMUD has committed to manage the Mokelumne and East Bay watersheds to ensure a high-quality water supply and protect natural resources while providing appropriate public access. EBMUD has several ongoing and planned actions to meet this goal, including Mokelumne River water temperature management, EBMUD’s pending Healthy Rivers and Landscapes (HRL) proposal, and forestry health work with the Upper Mokelumne River Watershed Authority (UMRWA).

Existing Water Temperature Management
The JSA includes a provision for cold water management to support downstream temperatures. It requires EBMUD to use its best eﬀorts to maintain Pardee and Camanche Reservoir stratiﬁcation with a minimum of 28,000 acre-feet of hypolimnetic volume (the volume of water colder than 16.4℃) in Camanche Reservoir through October, whenever Pardee Reservoir volume exceeds 100,000 acre-feet.

This provision for temperature management necessitates adaptive, ﬂexible operations of both Pardee and Camanche reservoirs.

This water temperature requirement and other water quality requirements were established to support fall run Chinook salmon and Steelhead in the Mokelumne River during the critical fall spawning and incubation period. To manage the system to achieve that volume, or a comparable adaptive approach to ensure cold water for salmon in the fall, there are multiple actions that EBMUD can take. These include the following:
• Joint operation of Pardee and Camanche reservoir releases to maximize cold water transfer eﬃciency from Pardee to Camanche and minimize cold water losses within the system • Releasing warmer surface water from the Camanche Reservoir high level outlet in place of cold water releases from the bottom of the reservoir when acceptable downstream (typically April through September) to conserve cold water for fall
• Minimizing cold water diversions into the Pardee Reservoir Tower (which serves the aqueducts to the service area) to preserve cold water in Pardee for supporting the downstream cold-water pool in Camanche Reservoir
Mokelumne River HRL Flow Proposal
The goal of the Mokelumne River HRL Flow Proposal is to build on the JSA successes in the Lower Mokelumne River through a mix of ﬂow and non-ﬂow measures that beneﬁt anadromous ﬁsh. If the EBMUD HRL Flow Proposal is accepted by the SWRCB, spring ﬂow contributions will be increased without any signiﬁcant eﬀect on Camanche Reservoir release temperatures.

The Mokelumne HRL Flow Proposal was developed to provide biologically beneﬁcial ﬂow regimes below Camanche Dam based on ambient conditions and when those ﬂows are most beneﬁcial to Mokelumne River ﬁsheries. The proposal provides that the entirety of the obligated block ﬂow (except in oﬀramp years) will be released during the designated year. The Mokelumne River Proposal anticipates 70 to 90 percent of full annual volume to be released in the March through May period for fry and juvenile

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February 2026 East Bay Municipal Utility District PSA 204 rearing and outmigration, and 10 to 30 percent to be released in October for adult migration, spawning, and incubation.

In summary, the Mokelumne River HRL ﬂow proposal has been designed to build on the substantial ﬁshery beneﬁts achieved with the JSA over the past 26 years, providing enhanced ecosystem conditions through a combination of ﬂow and non-ﬂow measures while maintaining the ability to manage temperatures in the Lower Mokelumne River.

Mokelumne River HRL Non-Flow Proposal
If EBMUD’s HRL proposal is accepted by the SWRCB, 25 acres of new ﬂoodplain rearing habitat enhancement measures will be created. In addition, EBMUD has committed to the annual maintenance of a restored 1-mile (15 acres) spawning reach. No designated spawning habitat is required under minimum required habitat goals, but EBMUD has implemented 1.27 acres of new spawning habitat and

2.67 acres of maintenance of existing habitat as early implementation actions and will continue to implement habitat improvements above the minimum required as landowner and funding opportunities allow. One acre of suitable instream rearing habitat will be implemented through screening diversions and providing habitat complexity during spawning habitat restoration work. Habitat enhancement measures will be implemented in accordance with the design criteria established for habitat restoration projects under the HRL Non-Flow initiatives, as outlined in Table 15 in the Water Quality Control Plan for the San Francisco Bay/Sacramento–San Joaquin Delta Watershed (CSWRCB, 2025).

Watershed Forestry Health
EBMUD and its partners in UMRWA are implementing forest health projects that improve wildﬁre resiliency and protect water quality, particularly in areas along roadways where wildﬁres are most likely to ignite. Catastrophic wildﬁres in the Mokelumne Watershed would signiﬁcantly impact the quality and reliability of EBMUD’s supply. Forest thinning, meadow restoration, and related projects reduce that threat.

UMRWA is a Joint Powers Authority comprised of six water agencies and three counties working collaboratively to address natural resource issues in the Upper Mokelumne watershed in Alpine, Amador, and Calaveras counties. UMRWA was formed in 2000. Over its 25-year existence, UMRWA has facilitated solutions to a variety of water, forest, and associated watershed issues. Since 2011, UMRWA has secured and administered nearly $40M in state and federal grants for water and forest projects in the watershed.

UMRWA is currently seeking a contractor for the El Dorado National Forest Projects Plan–Phase 1. The Forest Projects Plan–Phase 1 is a 25,671-acre timber stand and wildlife habitat improvement and protection project located on lands administered by the Eldorado National Forest (ENF) Amador Ranger District, within the upper Mokelumne and South Fork American River watersheds. The Phase 1 project is designed to help prevent high-intensity, large-scale wildﬁres, improve forest conditions, and protect important wildlife habitat and other resources. Non-commercial actions to reduce forest fuels are presently underway on 7,900 acres within the Phase 1 project area. The 11,695 +/- Phase 1 acres remaining to be treated are shown in Pending Projects Map, Forest Projects Plan–Phase 1. UMRWA has an annual fuel treatment goal of 4,000 acres per year.

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February 2026 East Bay Municipal Utility District PSA 205 Historical EBMUD Contributions to the Co-Equal Objectives Although EBMUD would be a new signatory to the Water Forum Agreement, EBMUD has ﬁnancially contributed to the success of the co-equal objectives. The investment and continued partnership with Sacramento County Water Agency in the FRWA intake on the Sacramento River and accompanying Folsom South Canal Connection (FSCC) system was a signiﬁcant investment to convey EBMUD’s supplemental supplies. In total, EBMUD spent approximately $500 million to construct the FRWA/FSCC systems. The FRWA intake is located downstream of the American River conﬂuence and, when opportunities arise, allows for American River water to be diverted after it has traveled the full distance of the Lower American River (LAR), thus providing potential beneﬁts for LAR corridor health.

EBMUD has also been an integral partner to PCWA’s PSA by purchasing the Water Forum releases during dry years. PCWA’s releases to the LAR provide both ﬂow and temperature beneﬁts to anadromous ﬁsh during the late summer/fall months of the driest years when the ﬂows are most important to ﬁsh survival. Since EBMUD and PCWA began their partnership in 2013, EBMUD has purchased approximately 37 TAF for $20.4 million from PCWA.

In addition to EBMUD’s speciﬁc investments, EBMUD has indirectly supported LAR habitat enhancement through contributions to the Central Valley Project Improvement Act (CVPIA) Restoration Fund. Since 2013, EBMUD has contributed approximately $1.8 million to the CVPIA Restoration Fund.

EBMUD Surface Water Framework
This section summarizes the EBMUD proposal for Water Forum 2050 commitments related to surface water diversions in terms of their contributions to the coequal objectives and proposed investments (Projects).

Contributions to River Corridor Health
• Minimize direct surface water diversions on the LAR by taking water at Freeport. o EBMUD’s intake facility at the Freeport project oﬀers a unique opportunity in dry years.

When water resources are scarce, and other purveyors may be letting water ﬂow down the American River for out-of-basin transfers and/or relying more heavily on groundwater resources, EBMUD can continue to take water at Freeport to alleviate drought conditions while also allowing surface water to provide ﬂow and temperature beneﬁts for the LAR.
• Contribute to the CVPIA Restoration Fund pursuant to EBMUD’s CVP contract ($1.8 million to date).
• Long-term commitment, pursuant to contract between PCWA and EBMUD, to purchase PCWA Water Forum releases intended for the ﬂow and temperature beneﬁt of the LAR during dry years.

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February 2026 East Bay Municipal Utility District PSA 206 Contributions to Water Supply Reliability

1. Continued evaluation and investment where appropriate in a diverse water supply portfolio that meets water supply needs and limits reliance on the American River watershed. See Figure 6 for EBMUD’s water supply portfolio concept approach.

Figure 6. EBMUD’s Water Supply Portfolio
Potential Future EBMUD Projects and Investments
(Note: this list is not a commitment by EBMUD to pursue these projects. Pursuit of these projects will be at the discretion of EBMUD’s Board of Directors and depend on EBMUD’s need for water during dry years, trends in customer demands, and ﬁnancial capacity to pay for the projects. EBMUD may decide to pursue a subset of the included projects or none at all.) • Expanded water conservation and water loss reduction programs • Expanded DREAM project (expanded yield to be determined) • Expanded recycled water, including evaluation of potable reuse potential and feasibility o Updated goal: 20 MGD by 2050 (non-potable reuse and future potable reuse) • Evaluate potential participation in the Sacramento Regional Groundwater Bank • 10 TAF CVP Contract Assignment from SMUD to participate in future potential storage projects (surface or groundwater)
o If EBMUD seeks the SMUD assignment, EBMUD currently intends to divert all supplemental supply into the Folsom South Canal from Freeport, not Nimbus Dam,

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February 2026 East Bay Municipal Utility District PSA 207 unless there is a request from Reclamation and support from stakeholders to do so that supports LAR health.
• Long-Term Water Purchase Agreement with Placer County Water Agency for Water Forum releases
• Long-Term Water Transfer Agreement with Yuba Water Agency for Yuba Accord releases • Short-term crop idling transfers with Sacramento Valley irrigators • Mokelumne River Healthy Rivers and Landscapes Agreements • Mokelumne Aqueducts Resiliency Project (MARP)

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February 2026 El Dorado Irrigation District PSA 208

El Dorado Irrigation District
Purveyor Specific Agreement
Updated: January 8, 2026
Purveyor Background
El Dorado Irrigation District (District) provides water, sewer, recycled water, and water-related recreation services within its service area. The District is the major water supplier located on the western slope of the Sierra Nevada Mountains in El Dorado County. The contiguous service area of the District spans approximately 220 square miles and includes a variety of urban, suburban, and rural communities and land uses. The population of the District’s service area is approximately 130,000, accounting for approximately two thirds of the total population of El Dorado County.

The District operates over 1,119 miles of water pipe, 27 miles of ditches, 5 water treatment plants (WTP), 4 sewage treatment facilities, 456 miles of sewer lines, 60 lift stations, 36 water and 5 recycled water storage and regulating reservoirs, and 38 water and 5 recycled water pump stations. The District’s WTPs have a total treatment capacity of approximately 102.6 million gallons per day (mgd).

The District also owns and operates a 21-megawatt hydroelectric generation project (Project 184) licensed by the Federal Energy Regulatory Commission (FERC) which consists of 4 reservoirs (Echo Lake, Lake Aloha, Caples Lake, and Silver Lake), dams, a forebay, a penstock, a powerhouse, and approximately 22 miles of ﬂumes, canals, siphons, and tunnels located in the Sierra Nevada Mountains east of Placerville in the counties of El Dorado, Alpine, and Amador. The District acquired this hydroelectric generation project from Paciﬁc Gas and Electric Company (PG&E) in 1999. The District operates the hydroelectric generation facilities, including recreational features, incidental to delivery of water and sells the generated power on the wholesale market. While the District generates revenue from operating Project 184, the project was purchased primarily to preserve the pre-1914 water rights associated with the facilities and to facilitate the acquisition of additional water rights thereafter obtained by Permit 21112 (described in more detail below).

Water Supply
The District’s primary supplies come from tributaries to the American and Cosumnes Rivers as described below.

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February 2026 El Dorado Irrigation District PSA 209
Jenkinson Lake
The District owns, operates, and supplies water from Jenkinson Lake through licensed appropriative water rights on Camp and Sly Park Creeks, both tributaries to the North Fork Cosumnes River. The available consumptive supply from Jenkinson Lake is approximately 23,000 acre-feet annually.

Folsom Reservoir
Pursuant to a permanent repayment contract between the District and the United States Bureau of Reclamation (USBR) (the Folsom Reservoir Repayment Contract), the District can divert up to 7,550 acre- feet per year of Central Valley Project water from Folsom Reservoir to serve the El Dorado Hills and western Cameron Park area. Additionally, in August 2010, the District and USBR executed a long-term Warren Act Contract (the Ditch/Weber Warren Act Contract) to enable the District to utilize up to 4,560 acre-feet of water per year at Folsom Reservoir from four pre-1914 water rights formerly associated with historic District ditches.

The District also has an appropriative water right (Permit 21112) to make consumptive use of 17,000 acre-feet annually of the water previously used only for Project 184’s hydroelectric power operations.

Pursuant to this right, water may be taken from Folsom Reservoir. On August 3, 2016, the District and USBR ﬁnalized and signed a long-term Warren Act Contract for use of the full 17,000 acre-feet until 2030, after which the contract is eligible for renewal.

Finally, pursuant to Public Law 101-514 (enacted in 1992), El Dorado County Water Agency (EDCWA) and USBR signed a long-term water service contract on October 23, 2019, for 15,000 acre-feet per year of water from Folsom Reservoir. Though the District and EDCWA have not yet negotiated a contract that will enable the District to utilize this supply, the District expects that, pursuant to a prior contract with the EDCWA, the District will receive at least one-half, or 7,500 acre-feet, of the water subject to future negotiation of repayment costs. This contract entitlement, if secured, will be in addition to the current Folsom Reservoir Repayment Contract entitlement of 7,550 acre-feet of water, the Ditch/Weber Warren Act Contract entitlement of 4,560 acre-feet of water, and the Permit 21112 Warren Act Contract entitlement of 17,000 acre-feet of water.

Forebay Reservoir
Forebay Reservoir is part of Project 184. Water stored in Silver, Caples, and Echo lakes and Lake Aloha is released and then diverted, along with natural river ﬂows, into the El Dorado Canal near Kyburz and Highway 50. The El Dorado Canal conveys up to 165 cubic feet per second (cfs) approximately 22.5 miles to Forebay Reservoir in Pollock Pines. At the Forebay Reservoir, the District diverts up to 15,080 acre-feet per year for drinking water treatment at Reservoir 1 WTP .47 The balance of the ﬂows entering Forebay Reservoir is utilized for power generation at Project 184’s El Dorado Powerhouse.

Crawford Ditch
The District has pre-1914 water rights to 5,000 acre-feet of water annually from both the North Fork Cosumnes River and Clear Creek points of diversion into the Crawford Ditch, a Gold Rush era ditch.

47 The District also delivers some water originating in the District’s Project 184 facilities into Jenkinson Lake via its Hazel Creek Tunnel.

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February 2026 El Dorado Irrigation District PSA 210
Water from Crawford Ditch is available only as raw water for irrigation and agricultural customers located along the Crawford Ditch and none of this supplemental supply is included in the District’s system ﬁrm yield water supply calculations.

In 2021, the calculated system ﬁrm yield from the ﬁrst three of the sources of water supply described above totaled 63,500 acre-feet. Current surface water entitlements from both the American River and Cosumnes River total around 81,500 acre-feet, with 44,200 acre-feet originating in the American River and its tributaries.

The District has no interties with surrounding purveyors although the District’s connectivity to Folsom Reservoir provides connection to other purveyors that receive Folsom Reservoir supplies. The District does, however, have multiple interties between the American and Cosumnes basins internal to both the District’s raw water intake system and treated water distribution system.

The District currently does not use groundwater as a source of supply, nor does it overlie any groundwater basins identiﬁed by DWR Bulletin 118. Given the lack of any groundwater basins on the western slope of El Dorado County, it is extremely unlikely that the District will ever utilize groundwater as a supply in the future. While the District remains open to considering opportunities for conjunctive use projects within or outside of its service area, no such projects have been identiﬁed at this time.

However, the District is participating in the Regional Water Authority’s Sacramento Groundwater Bank.

The District also has a recycled water system with source water from two regional wastewater treatment plants that operate with an annual production rate of approximately 3,500 acre-feet. The District has used recycled water to meet non-potable demands such as industrial processes and irrigation of golf courses, landscaping, outdoor residential irrigation, and road medians within the El Dorado Hills service area. Potable water has been used to supplement the recycled water system since 2002 to meet peak demands. Construction of seasonal storage for recycled water would reduce or eliminate the need to supplement the recycled system with potable water, but the estimated costs to construct seasonal storage make it infeasible at this time.

Surface Water Management
Current and Projected Demands
The District has invested in long-term water eﬃciency eﬀorts that have kept water demands relatively stable despite population growth in El Dorado County. Current District demands are on average approximately 35 thousand acre-feet (TAF) annually. This is down from approximately 45 TAF in 2008 but demands are expected to return to approximately 40 TAF by 2045. See Figure 1, below, for historic District diversions from both the American River and Cosumnes River to meet customer potable demand at WTPs.

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February 2026 El Dorado Irrigation District PSA 211

Figure 1. District American River and Cosumnes River Diversions to Meet Customer Potable Demand The percentage of water demands met by the American River or Cosumnes River supplies described above varies with hydrologic conditions and the operational constraints of the District’s water delivery system. Recent hydrologic modeling indicates that hydrologic conditions aﬀecting Cosumnes River supplies during dry and critically dry water years will limit the District’s ability to meet increased customer water demands through increased reliance on Cosumnes River supplies. During such dry conditions with future water demands, the District proportional reliance on American River supplies may increase if Cosumnes River supplies are inadequate. As described in more detail below, there may be opportunities for the District to shift from one source of supply (i.e., American River) to another (i.e., Cosumnes River) during certain times to help meet the Water Forum’s coequal objectives.

Notably, the District has invested heavily over the last decade in infrastructure improvements that help meet the Water Forum’s coequal objectives. Examples include the $50-million construction of a temperature control device at the District’s Folsom Lake intake, the $25-million piping of an open and unlined ditch, and the recently awarded $50-million contract to construct the Sly Park Intertie pipeline between the District’s two primary supply sources on the American and Cosumnes Rivers.

El Dorado Irrigation District Surface Water Management Proposal In service to the Water Forum’s coequal objectives, and subject to all of the terms and conditions of the Water Forum 2050 agreement, including the caveats and assurances described herein, the District oﬀers the following proposal. Commitments are discussed generally and in four diﬀerent sections speciﬁc to:
• Normal (Most) and wet conditions
• Drier conditions
• Driest conditions
• Critically Low Folsom Reservoir Storage conditions
This proposal was prepared with the following guiding principles in mind:

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1. Reduce surface water diversions from the Lower American River (LAR) in dry conditions to provide for river health.

2. Prioritize surface water diversions in wet conditions to allow groundwater recharge.

As presented in detail above, the District meets customer demand with supplies deriving from both the American River and Cosumnes River watersheds. Consistent with the guiding principles listed above, the District will reduce surface water diversions from the American River in dry conditions by adhering to its then-adopted Drought Action Plan and Water Shortage Contingency Plan. The Drought Action Plan includes speciﬁc actions for the management of the District’s water supply and demand, addresses the impacts associated with drought, and facilitates the timely implementation of eﬀective drought responses. When and to the greatest extent possible, the District will rely upon Cosumnes River supplies to meet customer demand.

The District does not have access to groundwater and is, therefore, unable to substitute surface water diversions with groundwater extraction in times of surface water scarcity. However, as an operator of reservoirs upstream of Folsom Reservoir, the District is capable of releasing water from storage in Normal (Most) and Wet years for aﬀordable transfer to LAR purveyors, which would allow purveyors that would otherwise need groundwater to forgo groundwater pumping in wet years and thereby promote groundwater recharge. The District is also able to provide additional transfer water in Drier and Driest years – amounts subject to hydrologic conditions and potential curtailments to District entitlements. The District is currently participating in the Regional Water Authority’s Sacramento Groundwater Bank and through that venue will seek partnerships with LAR purveyors for the transfers described above.

Normal (Most) and Wet Conditions Management
In normal (most) and wet conditions, the District will use American River supplies to meet up to 50% of its forecasted 5-year total potable demand and potentially provide transfer water for conjunctive use to improve groundwater conditions.
• Normal conditions exist when the forecasted unimpaired inﬂow into Folsom Reservoir (UIFR) is greater than 950 TAF.
• Wet conditions exist when the forecasted UIFR is greater than 1.6 MAF.

In normal and wet conditions, the District’s surface water diversions would be deﬁned by the forecasted 5-year total potable demand in the most recent Urban Water Management Plan (UWMP). Because the District meets customer demand from both the American and Cosumnes River supplies, the forecasted total potable demand must be reduced to account for only the diversions from the American River. The reduction would be informed by recent diversion patterns in the preceding 10-year period with the maximum single-year ratio of demands met with American River supplies being applied to normal conditions (up to 50%). This 10-year maximum ratio of demand met by American River supplies would be applied to the UWMP forecasted 5-year total potable demand.

Below is a theoretical example:
• UWMP Forecasted 5-year Total Potable Demand: 40 TAF
• 10-year maximum ratio of American River-derived supplies to meet demand: 50% • Total American River Surface Water Diversions: 40 TAF * 0.50 = 20 TAF

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February 2026 El Dorado Irrigation District PSA 213
In addition to the commitments for surface water diversions in normal and wet conditions, the District proposes to provide transfer water to LAR purveyors when the UIFR is above 950 TAF and supplies allow.

The transfer of water could improve groundwater conditions in the lower reaches of the watershed through direct groundwater recharge or wheeling of water to users that are traditionally served by groundwater in these year types.

Drier Conditions Management
In drier conditions, the District will implement the conservation measures required by its adopted Drought Action Plan, limit use of American River supplies to meet up to 70% of UWMP forecasted 5-year total potable demand, and potentially provide transfer water for conjunctive use to improve groundwater conditions.
• Drier conditions exist when the forecasted UIFR is between 400 TAF and 950 TAF.

In drier conditions, the proportion of diversions from the American River will increase relative to normal and wet conditions due to limited Cosumnes River supplies. Instead of surface water diversion reductions, the District proposes to provide downstream beneﬁts through the reoperation and transfer of stored supplies and entitlements to LAR purveyors. The quantity of water available in drier conditions will be dependent on watershed conditions and reservoir storage. The commitment of potential volumes available for transfer to LAR purveyors or south of the Sacramento-San Joaquin Delta (south-of-Delta) demand and the source of this water can be deﬁned at a later stage.

Driest Conditions Management
In driest conditions, the District will implement the conservation measures required by its adopted Drought Action Plan, limit use of American River Supplies to meet up to 75% of forecasted 5-year total potable demand, and potentially provide transfer water for conjunctive use to improve groundwater conditions.
• Driest conditions exist when the forecasted UIFR is less than 400 TAF.

In driest conditions, the proportion of diversions from the American River will increase relative to drier, normal, and wet conditions due to increasingly limited Cosumnes River supplies. Instead of surface water diversion reductions, the District proposes to provide downstream beneﬁts through the reoperation and transfer of stored supplies and entitlements to LAR purveyors. The quantity of water available in driest conditions will be dependent on watershed conditions and reservoir storage. The commitment of potential volumes available for transfer to LAR purveyors or south-of-Delta demand and the source of this water can be deﬁned at a later stage.

Critically Low Storage Conditions in Folsom Reservoir
Climate change is expected to greatly increase the frequency of critically low storage in Folsom Reservoir.

Below characterizes potential District operations that might help the American River under the following two conditions:

1. Potential operations in spring and summer when Folsom Reservoir storage is forecasted to reach 110 TAF at some point in the calendar year:
• Rely on Cosumnes River supplies to meet customer demand to the greatest extent possible

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• Conserve water as described in the District's Drought Action Plan • Potentially provide transfer water stored higher in the watershed • Plan for the potential installation of temporary barge and pumps at Folsom Lake

2. Potential operations in summer and fall when Folsom Storage is below 110 TAF:
• Rely on Cosumnes River supplies to meet customer demand to the greatest extent possible
• Conserve water as described in the District's Drought Action Plan • Potentially provide transfer water stored higher in the watershed • Potentially install temporary barge and pumps at Folsom Lake Demand Management
As noted above, the District invested in long-term water eﬃciency eﬀorts that successfully reduced demands notwithstanding population growth within its service area. Current District demands are on average approximately 23% lower than the peak demand of 45,000 acre-feet in 2008.

In 2019, the District converted its Main Ditch into an underground pipeline, at a cost of approximately $20 million, to reduce system water losses. That project resulted in annual savings of approximately 1,500 acre-feet of water from seepage and evaporation. The District successfully defended a lawsuit brought by local opposition under the California Environmental Quality Act—see Save the El Dorado Canal v. El Dorado Irrigation District (2022) 75 Cal.App.5th 239 (upholding El Dorado Irrigation District’s Environmental Impact Report and denying the petition for writ of mandate).

The District’s Oﬃce of Water Eﬃciency oﬀers several programs and services to commercial and residential customers to help conserve and achieve higher water eﬃciency. For example, District water eﬃciency staﬀ perform water audits for homes and businesses to evaluate irrigation systems, plumbing retroﬁts, and detect system leaks. The District also oﬀers rebates for qualifying purchases of water- eﬃcient appliances.

The District is committed to abiding by current and future relevant conservation and water use eﬃciency regulations. At the time of signing the Water Forum 2050 agreement, key requirements are associated with the following: 2024 Making Conservation a California Way of Life regulations, Assembly Bill 1572 related to irrigation of non-functional turf with potable water, and the Model Water Eﬃcient Landscape Ordinance (MWELO) which encourages low-water use and native landscaping for new development.

The District’s anticipated approach to comply with current water conservation eﬀorts remains under development. On September 22, 2025, the District awarded a contract to Hoch Consulting to assist the District in developing a compliance and reporting plan to implement the Making Conservation a California Way of Life regulation. The approach will be guided by input from District staﬀ, members of the communities we serve, and regional partners through the Water Forum. A similar process will be employed to roll out programs and actions to meet future regulatory calls for conservation. District staﬀ will leverage the Water Forum to engage and update the region as progress is made.

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February 2026 El Dorado Irrigation District PSA 215
Contributions to River Corridor Health
To contribute to the co-equal goal of river corridor health, the District will take the following actions:
• Release water below District reservoirs (Lake Aloha, Caples Lake, Silver Lake on the South Fork American River and Jenkinson Lake on the Cosumnes River) that provide downstream beneﬁts to aquatic resources year-round. On the South Fork American River and its tributaries, the District’s minimum instream releases are set forth in its FERC license for Project 184 and streamﬂow is measured at USGS reviewed gaging stations. On the Cosumnes River, minimum instream releases are included in the District’s licensed water rights for Camp and Sly Park Creeks. Bypass ﬂows are maintained through an 8” pipe at the Camp Creek diversion dam and release requirements to Sly Park Creek below Sly Park Dam (Jenkinson Lake) are maintained and measured by the District. The instream releases described above in both the American River and Cosumnes River are ongoing and will continue to promote and protect watershed health. • Conserve water as described in the District's Drought Action Plan to increase instream ﬂows both above and below Folsom Reservoir.
• Make payments to the Central Valley Project (CVP) Restoration Fund. As conditions under its CVP contract, and as a requirement to divert water from Jenkinson Lake (previously considered a CVP facility), the District pays a per-acre foot restoration fee, as authorized by the Central Valley Project Improvement Act. Annual payments depend on hydrology and customer demand in any given year. In 2023, the District paid over $500,000 in restoration payments to USBR. • Release additional water from storage for instream ﬂow as part of the American River Tributary portion of the proposed Intra-Tributary Agreement to Implement Healthy Rivers and Landscapes, an alternative to the unimpaired ﬂow approach recommended by the State Water Resources Control Board in the proceedings to update Bay-Delta Water Quality Control Plan. • Operate its Folsom Lake intake to maximize the beneﬁt of its temperature control device, diverting water above 60 degrees Fahrenheit while USBR is managing the cold-water pool (which may occur annually April through November, depending on conditions). • Rely on Cosumnes River supplies to meet customer demand to the greatest extent possible, eﬀectively reducing surface water diversions from Folsom Reservoir and the South Fork American River.
• Pursue a feasible alternate supply for customers served by upper Crawford Ditch. Presently, the District diverts up to 15 cfs (closer to 6 cfs on average) from the North Fork Cosumnes River under Pre-1914 water rights from May through October to supply non-potable uses for a small number of customers. If the District can identify a feasible alternative, it could refrain from diverting the water, leaving the water in the North Fork Cosumnes to contribute to in-stream beneﬁcial uses.
• Potentially provide transfer water in normal/wet years for groundwater recharge through the Sacramento Groundwater Bank and during drier/driest years to meet LAR and south-of-Delta demand to increase instream ﬂows below Folsom Reservoir.

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February 2026 El Dorado Irrigation District PSA 216
Contributions to Water Supply Reliability
To contribute toward the co-equal goal of water supply reliability, the District will take the following actions:
• Continue investing in water supply reliability by adhering to its annually adopted 5-year capital improvement plan. Notable projects in that plan include:
o Construction of the Sly Park Intertie (currently under construction in 2025) o Replacement of wooden ﬂumes with concrete
o Replacement of hypalon water storage reservoirs with concrete o Replacement of the Silver Lake Dam (scheduled to begin in 2027) • Expand its water treatment and transmission facilities as described in its then current Water and Recycled Water Master Plan (adopted on June 24, 2024).
• Potentially provide transfer water in normal years (groundwater recharge) and during drier/driest years (meet LAR demand) to increase instream ﬂows below Folsom Reservoir.

The ﬁnal section of this document includes a list of completed and ongoing District projects.

Caveats and Assurances

1. The signatories hereby acknowledge that the District’s existing Urban Water Management Plan forecasts an increase in future customer potable water demand. The signatories further acknowledge that (1) the District will need to ensure that it has suﬃcient available water supplies to meet forecasted future water demands throughout the District’s service area; and (2) ensuring suﬃcient available water supplies may require the District to undertake infrastructure and non-infrastructure projects that impact District water rights and supplies.

2. Without foregoing any current or future rights or remedies with respect to any project in particular, the Signatories hereby commit to work in good faith toward understanding each party’s respective interests and to seek to resolve any concerns regarding present and future water rights projects.

3. In the event of unforeseen circumstances, the District must be relieved of the commitments included herein. Unforeseen circumstances include, but are not limited to, curtailment of senior water rights, unanticipated infrastructure failures, forecasted carryover storage that falls below historical averages, changes in statute or regulation that inhibit the District’s ability to meet commitments, etc.

Project List and Future Water Supply Reliability Eﬀorts The following projects and initiatives are key to the District meeting the commitments contained herein and its water supply reliability in 2030 and beyond:
• Regional water transfers and agreements (partnerships) • Addition of upstream point of diversion to Permit 21112

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Table 1 provides a listing of major completed and ongoing District projects.

Table 1. Major Water Supply Projects that Promote Water Forum Coequal Objectives Project(s) Identiﬁed in Water Forum Agreement Project Status Completed Main Ditch Piping project Project completed in 2022 Replacement of wooden ﬂumes with
concrete
Many sections completed with others in the
planning/design phase
Folsom Lake Intake project with
temperature control device (TCD)
The project is complete and TCD operational as
of 2023
Ongoing/Pending
Sly Park Intertie Intertie construction active in 2025 Replacement of Silver Lake Dam Dam construction to begin in 2027 Addition of upstream point of diversion for
Permit 21112
Public engagement and environmental
document preparation
Improved and expanded transmission with
the District distribution system
See Water and Recycled Water Master Plan for
details
Expanded treatment capacity of El Dorado
Hills Water Treatment Plant
Planning and public engagement phase
Recycled water storage project Planning phase
Negotiation of agreement with El Dorado
Water Agency to utilize Fazio water
TBD
Potentially provide transfer water to meet
LAR needs
TBD based on potential agreements with LAR
purveyors
Pursue a feasible alternate supply for
customers served by upper Crawford Ditch
(North Fork Cosumnes River)
Planning phase

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February 2026 Golden State Water Company PSA 218

Golden State Water Company
Arden System and Cordova System
Purveyor Specific Agreement
Updated: January 8, 2026
Purveyor Background
Golden State Water Company (GSWC) is a subsidiary of American States Water Company, an investor- owned utility dedicated to increasing value through the expert management of utility assets and services. GSWC, then known as Southern California Water Company, was formed in 1929. In the 1960’s, GSWC purchased multiple water systems in Sacramento County to form the GSWC Cordova and the GSWC Arden systems. The two water systems are not hydraulically connected to each other. Today, the GSWC Cordova serves a portion of the City of Rancho Cordova and the unincorporated community of Gold River. In 2023, GSWC Cordova served approximately 15,424 connections. GSWC Arden serves a portion of the unincorporated community of Arden within the political jurisdiction of the County of Sacramento. In 2023, GSWC Arden served approximately 1,770 connections.

Supply Portfolio
GSWC Cordova’s water supplies have been augmented over time to adapt to changing conditions and provide a diverse and ﬂexible water supply portfolio.
48 GSWC Cordova’s primary water supply consists of
groundwater pumped from the Sacramento Valley Groundwater Basin through GSWC-owned wells, and surface water from the American River that is treated at the Coloma Water Treatment Plant. Water assets include a pre-1914 appropriative water right, Aerojet GET (Groundwater Extraction and Treatment) water supplies from a remediation agreement, and native groundwater supplies. GSWC Cordova also maintains emergency connections with neighboring agencies that allows it access to additional sources of water in emergency conditions.

GSWC Arden derives its supply from the Sacramento Valley Groundwater Basin through GSWC-owned wells. GSWC Arden also maintains emergency connections with neighboring agencies that allow it access to additional sources of water in emergency conditions.

48 GSWC Cordova 2020 UWMP , July 2021, page ES-2.

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Surface Water Supplies49
For GSWC Cordova, GSWC possesses a pre-1914 appropriative right from the South Fork of the American River established by the Natoma Water Company in 1851. Natoma Water Company’s original pre-1914 water right established a maximum diversion rate “to ﬁll a Canal Eight feet wide and Four feet deep with a current running ten miles per hour.” This correlates to a diversion rate of 60 cubic feet per section (cfs) and a maximum allocation of 32,000 acre-feet per year. This water right is held jointly with City of Folsom pursuant to a co-tenancy agreement. The co-tenancy agreement means that both the City of Folsom and GSWC have the right to use the water to the fullest extent possible as desired by the respective entities. The City of Folsom and GSWC have allocated the supplies under the entire 32,000 acre-foot water right. The City of Folsom unilaterally controls 22,000 acre-feet and GSWC controls the remaining 10,000 acre-feet of which 5,000 acre-feet is under contract. In November 1994, the City of Folsom and GSWC executed a contract under which the City of Folsom acquired the right to lease 5,000 acre-feet of water per year. As such, the basis of this water asset is held with GSWC pursuant to the co- tenancy agreement but the lease of the water asset to the City of Folsom is pursuant to a lease agreement. The 1851 ﬁling is the earliest in priority of perfected appropriative rights on the South Fork of the American River and is recorded.

GSWC Cordova’s surface water supply is diverted from the Folsom South Canal and is treated at the Coloma/Pyrites Water Treatment Plant.

GSWC Arden does not rely on surface water supply.

Groundwater Supplies50
Groundwater supplies constitute a major component of the GSWC Cordova’s water supply portfolio. The groundwater supplies for GSWC Cordova are derived from the South American Subbasin of the Sacramento Valley Groundwater Basin. The aquifers in the area are recharged from rainfall, applied irrigation water, streambed recharge, and irrigation channel recharge. The American River provides substantial stream channel inﬁltration.

GSWC Cordova has eight active groundwater wells. These wells are located throughout GSWC Cordova’s service area and include both typical wells and those with wellhead treatment to address the Aerojet contamination issues in the service area.

Groundwater supply constitutes the entirety of the GSWC Arden’s water supply portfolio. The groundwater supplies for GSWC Arden are derived from the North American Subbasin of the Sacramento Valley Groundwater Basin. GSWC Arden has six active groundwater wells.

Aerojet GET Water Supply51
As of 2015, GSWC had nine wells in GSWC Cordova. Prior to 2015, fourteen wells had to be destroyed due to contamination, and another was transferred to Aerojet for use as a remediation well. As part of a settlement agreement, Aerojet is obligated to deliver 5,000 AF of granted water to GSWC each year.

49 GSWC Cordova 2020 UWMP , July 2021, page 3-1.
50 GSWC Cordova 2020 UWMP , July 2021, page 3-3.
51 GSWC Cordova 2020 UWMP , July 2021, page 3-9.

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This water is discharged by Aerojet remediation wells into the American River for extraction and treatment at the Carmichael Water District (CWD) water treatment plant. The treated water is then pumped under the American River and into the GSWC Cordova service area. This agreement with CWD allows GSWC to divert and use the Aerojet GET Water replacement supply.

Per GSWC’s 2020 Urban Water Management Plant (UWMP), it should be noted that additional groundwater wells may be taken oﬄine in the future due to contamination. GSWC’s Settlement Agreement requires Aerojet to supply up to an additional 10,200 acre-feet of water per year.

Distribution System of Note
GSWC Cordova maintains an intertie with CWD, an intertie with Sacramento County Water Agency (SCWA), and emergency interconnections with SCWA, the City of Folsom, and two locations with California American Water. GSWC Arden maintains two emergency connections with Sacramento Suburban Water District (SSWD).

Current and Projected Demands
GSWC Cordova
Table 1 summarizes the GSWC Cordova demand over the last 10 years. The current GSWC Cordova service area is primarily characterized by low- to medium-density residential land use, with some mixed use, commercial, and light industrial land use also present, mostly along Sunrise Boulevard and Coloma Road.52 There is a corridor of parks and open space along the American River Parkway in the northern portion of the service area. Most development in the service area existed prior to 2015 and is not expected to change signiﬁcantly through 2045 (2020 UWMP planning period).

Table 1. GSWC Cordova—Historical Annual Demands
Year Total Demand (AFY)*
2014 13,954
2015 11,594
2016 12,790
2017 13,293
2018 13,456
2019 13,037
2020 14,360
2021 13,592
2022 12,561
2023 12,308
* Includes non-revenue water use
Development and redevelopment in the existing GSWC Cordova service area, where expected, will consist mostly of incremental inﬁll that does not signiﬁcantly change existing land uses. Transit Oriented Development and mixed-use inﬁll along Folsom Boulevard and the Gold Line light rail route will likely be among the most signiﬁcant changes from current conditions within the existing service area. The

52 GSWC Cordova 2020 UWMP , July 2021, page 2-5.

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unincorporated community of Gold River is primarily residential and near full build-out; future land use is expected to closely resemble current land use in this portion of the service area.

Projected water demands (Table 2) are from GSWC Cordova’s 2020 UWMP for the planning period of 2025 through 2045.53 GSWC may expand its service area boundary in the future to serve the proposed Westborough Development Project (Westborough Project) which is planned to be developed on land southeast of the current service area, east of Sunrise Boulevard and south of Folsom Boulevard. The Westborough Project site is located on lands that were once part of the Aerojet-Rocketdyne facilities and would consist of 1,665 acres of new residential, mixed-use development including 7,072 dwelling units, a town center and commercial area, parks, a school, water delivery facilities, and open spaces. The Westborough Project could potentially begin construction within the next ﬁve years and may reach full buildout by 2040.

Table 2. GSWC Cordova—Projected Water Demands, AFY (2025 – 2045) Year 2025 2030 2035 2040 2045
Current Service Area 13,605 13,949 14,301 14,662 15,032 Westborough Project 2,400 2,796 4,028 4,028 4,028
Total 16,005 16,745 18,329 18,690 19,060
Note:
a. GSWC Cordova 2020 UWMP Table 4-5.
b. GSWC Cordova 2020 UWMP Table 4-6.
c. Per the 2020 UWMP , demand assumptions for Westborough are based on the Westborough internal planning documents, which are currently in draft form and subject to change but represent the reasonable information available to GSWC at the time of the 2020 UWMP preparation.

GSWC Arden
Table 3 summarizes the GSWC Arden demand over the last 10 years. The current GSWC Arden service area is primarily characterized by low- to medium-density residential land use, with some commercial land use. The GSWC Arden System is considered near build-out. Most new connections are likely to be generated by redevelopment rather than new development. Preparation of a UWMP is not required for GSWC Arden; for the planning period of 2025 through 2045, projected demands are expected to be relatively constant compared to the existing demands.

Table 3. GSWC Arden—Historical Annual Demands
Year Total Demand (AFY)*
2014 896
2015 778
2016 793
2017 854

53 GSWC Cordova 2020 UWMP , July 2021, page 4-6.

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Year Total Demand (AFY)*
2018 836
2019 836
2020 932
2021 925
2022 852
2023 828
* Includes non-revenue water use
Surface Water Management
Surface water is integral to GSWC Cordova’s water supply portfolio. The following sections describe how surface water is managed for the GSWC Cordova System. GSWC Arden does not rely on surface water.

Current Diversions
Table 4 summarizes the annual diversions from the American River.

Table 4. GSWC Cordova—Historical Diversions from the American River Year GSWC Cordova (AFY)
City of Folsom
Leased Water* (AFY) Total Diversion (AFY)
2014 4,768 4,470 9,238
2015 3,569 3,988 7,557
2016 4,068 3,510 7,578
2017 4,596 - 4,596
2018 4,994 - 4,994
2019 4,623 - 4,623
2020 2,500 - 2,500
2021 3,929 - 3,929
2022 4,649 - 4,649
2023 5,053 - 5,053
* From 2014 – 2016, GSWC leased American River water supply from the City of Folsom due to a short-term emergency to mitigate the loss of groundwater due to contamination. In 2017, the American River pipeline became operational and GSWC Cordova started receiving supplies from CWD. See Aerojet GET Water Supply Section for more detail.

Future Projected Diversions
GSWC Cordova will continue to use its pre-1914 appropriative right from the South Fork of the American River.

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Drier Conditions Management
The fundamental management tenet for GSWC Cordova’s water service reliability in dry periods is to coordinate with the City of Folsom and United States Bureau of Reclamation (Reclamation) for its pre- 1914 appropriative surface water rights, Sacramento Central Groundwater Authority for groundwater management, and CWD for the treated Aerojet supply.54 Discretion over the amount of groundwater pumped allows GSWC Cordova to match its total supplies to meet annual demands which increases GSWC Cordova’s dry year resilience.

In 2015, the driest year in the last 100 years in California, the State Water Resources Control Board curtailed some pre-1914 appropriative water rights with priority dates as early as 1903. The 1851 water right was protected from curtailment because of its seniority. As such, the entirety of this water right was available to GSWC in all year types which makes it extremely resilient against drought conditions and regulatory curtailment.

In February 2024, the California Public Utilities Commission (CPUC) approved GSWC’s request to enter into the American River Terms of Ecosystem Support and Infrastructure Assistance Needs (ARTESIAN) Project Agreement. The ARTESIAN Agreement would require GSWC to forebear the use of up to 763 acre-feet of its surface water rights from the South Fork of the American River during three dry or critical years from 2025 through potentially 2036. In exchange, GSWC would receive grant funding to upgrade its interconnections with SCWA. This Agreement to intermittently encumber water will be similarly followed by eight other entities, working together through a Department of Water Resources (DWR) endeavor to reduce diversions from the Lower American River during dry years and increase instream ﬂows necessary to support ecosystems and ﬁsh species, by encumbering a total of 30,000 AF of water each of those years.

GSWC acknowledges and supports the goals and general framework of the Sustainable Groundwater Management Act (SGMA) and intends to operate its surface water and groundwater supplies in a manner broadly consistent with SGMA objectives, to the extent applicable to the company and subject to regulatory and contractual obligations.

Driest Conditions Management
See previous section for Drier Conditions Management.

Critically Low Storage Conditions
See previous section for Drier Conditions Management.

Demand Management
From the perspective of GSWC, demand management is a critical strategy for ensuring long-term water supply reliability, regulatory compliance, and operational eﬃciency while staying committed to customer service and environmental stewardship. By oﬀering programs such as conservation incentives, employing tiered rate structures, performing reoccurring leak detection eﬀorts, and engaging in public education, GSWC can more eﬀectively manage consumption, especially during drought or peak demand periods

54 GSWC Cordova 2020 UWMP , July 2021, page ES-4.

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Project List and Future Water Supply Reliability Eﬀorts Structural
• Upgrades to GSWC Cordova interconnections with SCWA due to the ARTESIAN Agreement • Ongoing water main and service replacements to reduce water loss for both systems (GSWC Cordova and GSWC Arden)
• Ongoing replacement of aged water meters to control and/or reduce non-revenue water for both systems
Non-Structural
• Continued water use eﬃciency programs for both systems.

Caveats and Assurances

1. The ability for any individual purveyor to implement the surface water diversions principles will depend on their respective opportunities and constraints.

2. In circumstances where excess water is made available by Reclamation by a Section 215 Contract between the purveyor and Reclamation due to ﬂood control or "uncontrolled season" operations at Folsom Reservoir, for the purposes of groundwater recharge, that water would not be counted as diversion water within their Purveyor Speciﬁc Agreement (PSA), regardless of year type.

3. Protection of purveyor’s water entitlements. This Agreement shall not modify or diminish any vested water rights, including GSWC’s pre-1914 appropriative right on the Lower American River.

Use of surface water for the purpose of maintaining hydraulic control to prevent groundwater contaminant migration resulting from basin pumping shall remain a fully protected and recognized exercise of GSWC’s water entitlements.

4. Support aquifer storage and recovery for the purposes of groundwater recharge and surface banking within purveyors’ water entitlements.

5. Water demands in future UWMPs shall be re-visited and updated in the surface water diversions table.

6. GSWC is contractually obligated to use its 5,000 acre-feet of surface water rights as the baseline supply for the GSWC Cordova system. Deviation from this requirement requires consent from the other party. This consent would be sought during severe adverse conditions, but a positive outcome cannot be assured.

7. GSWC is regulated by the California Public Utilities Commission (CPUC). GSWC’s implementation of this PSA is subject to review by the CPUC. GSWC may modify or terminate implementation of this PSA upon receiving an adverse decision related to implementation by the CPUC.

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Placer County Water Agency
Purveyor Specific Agreement
Updated: January 8, 2026
Purveyor Background
Placer County Water Agency (PCWA) was created in 1957 by a special act of the California Legislature known as the Placer County Water Agency Act. The boundaries of PCWA are coterminous with the boundaries of Placer County. PCWA has a ﬁve-member board of directors elected in each of the county’s supervisorial districts for four-year terms.

PCWA carries out a broad range of responsibilities including water resource planning and management, wholesale and retail supply of water, and hydroelectric energy production. PCWA has access to stored surface water appropriative rights and contract entitlements totaling roughly 500,000 acre-feet per year (AFY), with about half this amount being planned for consumptive use. PCWA also has access to a regionally managed sustainable groundwater supply.

PCWA currently delivers approximately 100,000 AFY of treated and untreated water to retail customers and approximately 30,000 AFY to neighboring water suppliers for resale, serving a total population of over 250,000 people in Placer County directly or indirectly. In addition, PCWA regularly makes surface water available through transfers to assist ﬁshery protection goals in the lower American River while simultaneously providing water supplies to water purveyors across the state with limited access to water in dry years and periods of drought.

In the future, it is anticipated that PCWA will have a buildout water demand of approximately 253,000 AFY . PCWA is actively engaged in regional water planning, such as conservation and conjunctive use, to ensure suﬃcient water supply is available to meet demands.

Service Area
In accordance with its act, PCWA’s district boundary overlays the entire area of Placer County. However, PCWA formed Zone 6 as a boundary to reﬂect its practical service area under current planning in western Placer County (Figure 1). The Zone 6 service area is a ﬁnancial and operational amalgamation of four separate systems acquired or developed over time. Each of these underlying systems is designated as a PCWA Zone; numbered 1, 2, 3 and 5.55 PCWA refers to Zone 6 as the “Western Water System.”

55 Previously, PCWA served an area called Zone 4. Zone 4, located in Martis Valley near Truckee, California, is now served by Northstar Community Services District.

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Figure 1. PCWA’s Service Area and Zones

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The Zone 6 service area extends from the community of Alta on the east, westward down the Interstate 80 corridor, and bounded by the Nevada Irrigation District to the north, the South Sutter Water District to the west, Sacramento County to the south, and El Dorado County to the east. The service area includes retail treated water deliveries to the communities of Alta, Monte Vista, Applegate, Colfax, Auburn, Loomis, Rocklin, and much of the surrounding unincorporated areas within Placer County. PCWA also provides wholesale treated water to the City of Lincoln and California American Water for use in their franchise area west of Roseville and south of Baseline Road, and to other relatively small community water systems throughout PCWA’s service area.

In addition to treated water service, PCWA provides untreated water through its extensive canal system to individual customers and water for treatment and resale by other retail water purveyors. Untreated water comprises more than half of PCWA’s delivery by volume.

PCWA also provides untreated water under its North Fork American River water rights into Folsom Lake for delivery to the San Juan Water District (SJWD), the City of Roseville, and Sacramento Suburban Water District (SSWD). Thus, PCWA’s place of use for its American River water rights extends outside of its district boundary (Figure 2).

Supply Portfolio
PCWA uses surface water as its primary water supply for delivery to its wholesale and retail customers.

PCWA may also use groundwater in dry hydrologic conditions to meet demands and may use recycled water – produced by the cities of Roseville and Lincoln – to meet demands in the future. Existing and planned supplies are described below and summarized in Table 1.

Table 1. PCWA’s Existing and Planned Supplies, AFY
Supply Source 2020 2025 2030 2035 2040 Buildout
Middle Fork Project (MFP) 120,000 120,000 120,000 120,000 120,000 120,000 MFP Downstream1 47,000 47,000 47,000 47,000 47,000 47,000 Central Valley Project2 (CVP) 0 0 35,000 35,000 35,000 35,000 Paciﬁc Gas and Electric (PG&E) 125,400 125,400 125,400 125,400 125,400 125,400 Pre-1914 Appropriative Rights 3,400 3,400 3,400 3,400 3,400 3,400 Recycled Water 0 0 2,500 5,000 7,000 9,000
Groundwater 2,000 2,000 4,000 4,000 5,000 5,000
TOTAL SUPPLY 297,800 297,800 337,300 339,800 342,800 344,800

1. MFP supply to be delivered to an expanded place of use downstream in dry years, see Surface Water Management.

2. CVP supply is currently not available due to physical limitations until infrastructure is in place to access this supply, which is assumed to be in 2030.

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Figure 2. PCWA’s American River Water Rights Place of Use

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Surface Water
PCWA’s surface water supplies consist of water diverted from the Yuba, Bear, and North Fork American Rivers and its tributaries which includes the following:
• Water purchased from Paciﬁc Gas and Electric Company (PG&E) from the Yuba and Bear Rivers (via the Drum-Spauling hydropower system) under the 1982 Zone 3 Contract Purchase Agreement and the 2015 Water Supply Agreement
• Direct diversions from the North and Middle Forks of the American River and water stored in its Middle Fork Project (MFP) under water rights permits 13856 and 13858; • Central Valley Project (CVP) water under CVP Repayment Contract 14-06-200-5082A-IR1- P from the American River
• Surface water from various small creeks under pre-1914 water rights A description of PCWA’s existing surface water supplies is provided below.

PG&E Contracts
PCWA has two water supply contracts with PG&E for the purchase of up to 125,400 AFY for irrigation and domestic purposes—100,400 AFY under an agreement for the “Western Water System” (formerly Zones 1, 2, and 5) and 25,000 AFY under another agreement for Zone 3. The underlying rights for the PG&E supply are PG&E’s pre-1914 appropriative rights to water in the Yuba and Bear Rivers, which were established prior to the time that PG&E developed hydroelectric facilities throughout the Yuba and Bear watersheds and are dedicated to consumptive needs in Nevada and Placer Counties. The water supply that PCWA purchases from PG&E is used to meet both untreated and treated water demands within PCWA’s service area.

PG&E Drum-Spaulding water supplies have historically been very reliable. However, during recent droughts the allocation of this supply has been reduced, and climate change projections indicate that this water supply will not be as reliable due to warming temperatures and reductions in precipitation as snowfall. Additionally, the age of the infrastructure in PG&E’s Drum Spaulding System has resulted in an increase in infrastructure failures and periods of outage for repairs that aﬀect the reliability of this water supply.

American River Water Rights
PCWA holds appropriative water rights on the North Fork and Middle Fork of the American River and various tributaries thereof pursuant to Permits 13856 and 13858 through the California State Water Resources Control Board (State Water Board), Division of Water Rights, and owns and operates the MFP , a multi-purpose water supply and hydroelectric-generation project. Major components of the MFP include two storage reservoirs, ﬁve regulating reservoirs and diversion pools, and ﬁve powerhouses. The MFP seasonally stores and releases water to meet consumptive water demands within western Placer County and northern Sacramento County while simultaneously generating clean and renewable power for the California electric grid. Currently, PCWA’s use of American River water for consumptive purposes is diverted at two locations: (1) American River Pump Station (ARPS); and (2) Folsom Dam.

The two water rights permits provide water supplies to PCWA’s treated and irrigation water customers from the ARPS and to PCWA’s wholesale customers from Folsom Dam. PCWA may use water under its

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permitted water rights in western Placer County, as well as portions of northern Sacramento County, including SJWD and its wholesale family, SSWD, and Rio Linda/Elverta Community Water District service areas. PCWA’s wholesale customers with deliveries out of Folsom Dam currently include the City of Roseville, SJWD, and SSWD.

The year of priority for water right Permits 13856 and 13858 is 1958, one year after PCWA was established by the Placer County Water Agency Act. These water rights were originally part of a State Filed Application ﬁled pursuant to California Water Code section 10500 and were released from priority pursuant to California Water Code section 10504. The release from priority operates as a limited exception to the rule of priority, precluding the eventual assignee of the original State Filed Application from asserting priority against PCWA.

The consumptive volume of water available to PCWA from its American River water rights is currently limited by agreement with the U.S. Bureau of Reclamation (Reclamation). This limitation is related to performance by Reclamation in providing an alternate supply to PCWA pursuant to their CVP contract.

The contextual relationship of these supplies is described below.

In November 2007, PCWA timely ﬁled petition for extension of time with the State Water Board requesting an additional 36 years (until the year 2043) in which to put water allocated under these permits to full beneﬁcial use. This petition was supported by members of the Environmental Caucus of the Water Forum. In March 2008, the State Water Board issued a Notice of Petition for Extension of Time (Petition) for Water Right Permits 13856 and 13858. PCWA’s Petition for Extension of Time is pending before the State Water Board.

Central Valley Project Contract
PCWA has a CVP water supply contract with Reclamation for delivery of up to 35,000 AFY for municipal and industrial purposes, including groundwater recharge programs that are consistent with applicable State law. The CVP Repayment Contract 14-06-200-5082A-IR1-P (dated February 28, 2020) remains in eﬀect in perpetuity. Reclamation reserves the right to apportion the available CVP water supply among PCWA and other CVP water contractors under its Municipal and Industrial Water Shortage Policy.

PCWA’s point of diversion for CVP water under the CVP Contract is Folsom Dam, but the contract also includes potential for other points of diversion, including the Sacramento River, if agreed to by the Contracting Oﬃcer. PCWA does not currently own or control facilities that are capable of conveying CVP water from Folsom Dam to the PCWA service area. As such, the availability of the water supply is currently aﬀected by physical limitation. PCWA is engaged in negotiations with Natomas Central Mutual Water Company and other regional entities to utilize existing facilities to divert and deliver PCWA’s CVP project water supplies from the Sacramento River.

PCWA is a partner agency on the RiverArc Project, which would diversify water supplies by shifting a portion of regional water demand from the American River and Folsom Reservoir to the Sacramento River. PCWA anticipates the future opportunity to divert all or a portion of its CVP contract water from a diversion on the Sacramento River as part of the RiverArc Project.

Contextual Relationship of American River Water Rights and CVP Contract PCWA completed construction of its MFP in 1967. This project has a current total storage capacity of 342,583 acre-feet (AF) in two major reservoirs and several smaller reservoirs. As originally planned, the

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MFP was to be comprised of three major reservoirs: French Meadows, Hell Hole, and American Bar.

American Bar Dam was to be located just south of Foresthill, below the current Oxbow Powerhouse.

American Bar Dam and Reservoir would have provided an additional 100,000 AF of water storage for the people of Placer County, as well as another large hydroelectric plant. Reclamation opposed PCWA’s water right applications for the MFP and speciﬁcally American Bar Dam, because it was planned in the upper reaches of the ﬂooded area of the future Auburn Dam. PCWA had also protested Reclamation’s applications for water on the American River, including for the Auburn Dam. PCWA and Reclamation then entered negotiations to resolve the protests in a way that would allow construction of both projects.

The negotiations resulted in a series of agreements which provided, in pertinent part, that PCWA would abandon plans to build American Bar Dam, instead moving the lowest of the MFP dams to Ralston Afterbay. PCWA also agreed to limit consumptive use diversions from the MFP to 120,000 AFY . In exchange, Reclamation was to provide PCWA with an additional 117,000 AFY of CVP water. This agreement insured PCWA that it had suﬃcient water supplies to meet the demands of Placer County and was memorialized in a 1966 “Agreement and Stipulation” between PCWA and Reclamation. The amount of CVP supply was subsequently agreed to be reduced to 35,000 AFY , which is now provided for in PCWA’s 2020 long-term repayment contract.

PCWA’s consumptive water rights from the MFP are still under development. PCWA’s agreement to limit its diversion of MFP supply to 120,000 AFY subject to Reclamation’s agreement to provide 35,000 AFY provides PCWA with a total of 155,00 AFY from the American River watershed. This amount combined with PCWA’s water delivered by PG&E from the Drum-Spaulding system is suﬃcient to meet buildout demands. This amount diverted from the American River is well within PCWA’s MFP storage capacity of 342,583 AF. Should Reclamation fail to fulﬁll its obligations under the various settlement agreements with PCWA, PCWA would be ready, willing, and able to obtain the full amount from its MFP storage. In addition, PCWA is planning to deliver an additional 47,000 AFY of MFP water for consumptive use downstream of the conﬂuence of the American and Sacramento Rivers. This consumptive use would be in dry years as part of a mitigation strategy for the lower American River, as discussed elsewhere in this document.

Pre-1914 Appropriative Rights
PCWA holds four pre-1914 appropriative water rights for diversion of water from various small creeks and their tributaries in western Placer County. These rights are generally for agricultural purposes, including irrigation and livestock watering.

Surface Water Summary
Table 2 identiﬁes the source, purpose of use, maximum available quantity, and place of use for each PCWA surface water supply.

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Table 2. PCWA’s Surface Water Supply Summary
Supply Source Purpose of Use Volume, AFY Place of Use
Water Right Permits
13856 and 13858
American River Irrigation,
Domestic,
Municipal, and
Industrial,
Recreation
120,0001 Western Placer County
and Portions of
Sacramento County (see
Figure 2)
Water Right Permits
13856 and 13858
American River Irrigation,
Domestic,
Municipal, and
Industrial,
Recreation
47,0002 Proposed expanded place
of use to include East Bay
Municipal Utility District
and other potential
downstream buyers
Central Valley Project
Contract
American River3 Municipal and
Industrial
35,000 Place of use pursuant to
contract (generally
PCWA’s Zone 1)
PG&E Water Supply
Agreement (2015)
Yuba and Bear
Rivers
Irrigation and
Domestic
100,400 Western Water System
(generally PCWA’s Zone 6)
PG&E (Zone 3) Purchase
Agreement (1982)
Yuba and Bear
Rivers
Irrigation and
Domestic
25,000 PCWA’s Zone 3
Pre-1914 Appropriative
Right (S000959)
Canyon Creek Irrigation and
Domestic
40 cfs (Max.) Alta, Colfax, Monte Vista
and rural areas (Not
limited to Zone 3)
Pre-1914 Appropriative
Right (S000967)
Tributary to
Auburn Ravine
Irrigation and
Stock Watering
Not Stated “Boardman Canal” Area
Pre-1914 Appropriative
Right (S010397)
South Fork Dry
Creek Tributary to
Coon Creek
Irrigation Not Stated Localized Irrigation Just
East of Auburn
Pre-1914 Appropriative
Right (S010398)
North Fork Dry
Creek Tributary to
Coon Creek
Irrigation Not Stated Localized Irrigation Just
East of Auburn

1. See Contextual Relationship of American River Water Rights and CVP Contract.

2. Environmental ﬂows to be sold downstream, see Surface Water Management.

3. PCWA is pursuing relocation of this point of diversion to the Sacramento River.

Groundwater
PCWA has historically produced a limited quantity of groundwater. PCWA does not anticipate utilizing groundwater to support its normal year water deliveries. PCWA has two wells – the Sunset Well and the Tinker Well – each with a production capacity of about 1,000 AFY . These wells are for backup and dry- year supplies. The proposed Regional University development plans to construct one new well and the current Placer One development plans to construct two new wells, increasing PCWA’s groundwater supply from the current 2,000 AFY to 5,000 AFY in 2040 (Table 1).

Recycled Water
The County of Placer has access to recycled water through its wastewater service arrangements with the cities of Roseville and Lincoln and has dictated use of these supplies as a condition of development in the

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Placer Vineyards, Placer One, and Regional University projects. Potential retailers of these supplies are the county, PCWA, and California American Water. Regardless of who the retailer is, these supplies would be available as conditions of those development projects. PCWA anticipates the quantities of recycled water presented in Table 1 to be made available. The details of recycled water delivery are being developed as part of on-going regional planning.

Distribution System
Untreated Water
The PCWA untreated water conveyance system consists of 170 miles of earthen and lined canals, with ﬂumes and pipelines where appropriate, beginning in the community of Alta, ﬂowing southwest, generally following Interstate 80, and ending in Roseville. The main canal in the system is the Boardman Canal, which ﬂows contiguously from Alta to Roseville. In Auburn the canal system begins to distribute outward into branch canals. There are also two canals in western Placer County that divert water from the Auburn Ravine. PCWA purchases water at several connections to the PG&E canal system called “Buy Points,” positioned at key locations between Alta and the end of PG&E’s South Canal. Water can also enter the canal system from accretion ﬂows, pre-1914 water rights, and return ﬂows from PCWA untreated water customers (water that is delivered to customers and ﬂows back into the canal).

PCWA can also pump MFP water out of the North Fork of the American River at the ARPS, into the 3-mile Auburn Tunnel under the City of Auburn to a valved outlet into Auburn Ravine, where the water is delivered to the two canals in western Placer County. MFP water can also be pumped out of the tunnel at the Ophir Road Pump Station into the PG&E South Canal, to PCWA’s Dutch Ravine Canal, or to the Foothill and Ophir (future) water treatment plants.

Treated Water
PCWA owns and operates nine water treatment plants between Alta and Rocklin, producing approximately 40,000 AF of potable water each year. Treated water is distributed by 615 miles of pressurized pipe and delivered to various retail and wholesale customers.

PCWA also has several treated water interties with neighboring water agencies: Nevada Irrigation District, SJWD, the City of Lincoln, and the City of Roseville. Some of these connections are one-way due to pressure diﬀerences, while other connections can ﬂow water in either direction with the use of pumps or pressure-reducing valves.

Current and Projected Demands
PCWA’s water use is broken down into four classiﬁcations: retail treated, retail untreated, wholesale treated, and wholesale untreated. PCWA’s current (2020) treated and untreated retail demands are 101,613 AFY and are projected to increase to 125,134 AFY at buildout. PCWA’s current (2020) treated and untreated wholesale demands are 31,376 AFY and are projected to increase to 128,282 AFY at buildout. Table 3 provides the total current and projected PCWA customer demands for 5-year increments through 2040 and buildout conditions. The treated water demand estimates account for an appropriate amount of water use reduction resulting from the successful implementation of Senate Bill 7x-7, “20 by 2020,” and anticipated reduction from the regulation titled “Making Conservation a California Way of Life.”

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Table 3. Summary of PCWA’s Total Customer Demand Projections, AFY Classiﬁcation of Water Use 2020 2025 2030 2035 2040 Buildout Treated Retail 29,065 33,182 37,773 43,780 52,637 62,036 Untreated Retail 72,548 71,208 69,298 67,681 66,313 63,098 RETAIL SUBTOTAL 101,613 104,390 107,071 111,461 118,950 125,134 Treated Wholesale 11,450 15,413 18,388 22,710 27,032 47,276 Untreated Wholesale 19,926 54,923 58,712 63,289 81,006 81,006 Untreated Downstream1,2 19,000 47,000 47,000 47,000 47,000 47,000 WHOLESALE SUBTOTAL 50,376 117,336 124,100 132,999 155,038 175,282 PCWA TOTAL WATER USE 151,989 221,726 231,171 244,460 273,988 300,416

1. MFP supply to be delivered to an expanded place of use downstream in dry years, see Surface Water Management.

2. This demand will only be in dry years to provide environmental ﬂows to the lower American River, 47,000 AFY will be the maximum amount.

Surface Water and Groundwater Management
PCWA was a signatory to the 2000 Water Forum Agreement. The Water Forum Agreement has two coequal objectives: (1) provide a reliable and safe water supply for the region’s economic and planned development; and (2) preserve the ﬁsh, wildlife, recreational, and aesthetic values of the lower American River.

The Water Forum Agreement’s supportive Environmental Impact Report fully analyzed buildout demand in PCWA’s place of use and identiﬁed purveyor speciﬁc agreements for PCWA’s wholesale customers (City of Roseville, SJWD and SSWD) which placed restrictions on the use of North Fork American River water depending on unimpaired inﬂow into Folsom Reservoir. In addition, PCWA voluntarily agreed to release up to 47,000 AF (27,000 AF for PCWA and 20,000 AFY for the City of Roseville) of additional water
56 (Water Forum environmental releases) in drier years through reoperation of MFP reservoirs.

When projected March through November Unimpaired Inﬂow to Folsom Reservoir (M-N UIFR) is between 950,000 and 400,000 AF, the amount of these environmental releases is linearly interpolated between 0 and 47,000 AF. When projected M-N UIFR is less than 400,000 AF, it is considered a “conference year” where Water Forum participants meet to determine how best to manage the available water, recognizing that there may not be suﬃcient water to meet both deliveries and environmental release requirements speciﬁed in the agreement. Under this program of environmental releases, PCWA has released more than 200,000 AF of water to the lower American River in dry years.

When projected M-N UIFR is greater than 1.6 million AF, there is a provision for PCWA to sell surface water to groundwater pumpers in Sacramento County as part of a conjunctive use program to alleviate groundwater overdraft. PCWA’s place of use was expanded into Sacramento County as shown on Figure

56 The Water Forum environmental releases represent additional water (up to 47,000 AF) in drier years that would not otherwise be released from storage for power generation or for consumptive delivery purposes within western Placer County and northern Sacramento County were it not for the Water Forum Agreement requirements.

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2 to provide for this program. The primary purchaser has been SSWD, who has recharged more than 200,000 AF of PCWA water in the North American Subbasin. This program could be expanded to other water purveyors within the current place of use.

The Water Forum environmental releases were intended to oﬀset eﬀects of higher diversion of water from the ARPS (PCWA) and Folsom Dam (City of Roseville) above the historical delivery baseline used in the Water Forum Agreement57. The Water Forum Agreement evaluated the diversion of 35,500 AFY of water from the ARPS with recognition that PCWA would pursue an additional diversion of 35,000 AFY .

Currently it is expected that the ARPS diversions will increase to 70,500 AFY in the future pending additional environmental analysis.
58 This, combined with its PG&E and CVP contract water, is estimated to meet PCWA’s buildout demands. The 35,000 AFY of CVP water is currently being pursued at the Sacramento River (RiverArc Project) pursuant to 2000 Water Forum Agreement.

The following sections provide information on PCWA’s current and projected American River diversions and how PCWA intends to manage surface waters in support of Water Forum objectives in drier, driest, and critically low conditions.

MFP-Related Surface Water Management
PCWA’s Federal Energy Regulatory Commission (FERC) license, which was issued in 2020 and has a 40- year term, has numerous requirements that were collaboratively developed to enhance environmental conditions in the MFP area. These conditions include higher instream ﬂow and reservoir storage requirements, spring pulse ﬂows, and reservoir spill ramp down ﬂows. These additional ﬂows have reduced hydropower generation nominally 5%, which will be partially mitigated by the addition of raising Hell Hole Dam for additional wet year storage. Additional measures include large woody material management, trout spawning habitat improvements, and sediment augmentation, among others. All the FERC requirements were developed in anticipation of continued implementation of the Water Forum Agreement.

Current American River Diversions
Table 4 summarizes PCWA’s American River diversions for the previous 10-year period (2014–2023).

PCWA’s current level of American River diversions (2023) was 26,200 AFY .

57 In the Water Forum Agreement, PCWA’s baseline was 8,500 AFY and the assumption was that at full buildout PCWA would divert 35,500 AFY at the ARPS (diﬀerence of 27,000 AFY); the City of Roseville baseline was 19,800 AFY and the assumption was that at full buildout Roseville would divert 39,800 AFY at Folsom Dam in drier years (diﬀerence of 20,000 AFY). The total additional water above baseline for PCWA and City of Roseville is up to 47,000 AFY. 58 In the Water Forum Agreement, PCWA’s baseline was 8,500 AFY and the assumption was that at full buildout PCWA would divert 35,500 AFY at the ARPS (diﬀerence of 27,000 AFY); the City of Roseville baseline was 19,800 AFY and the assumption was that at full buildout Roseville would divert 39,800 AFY at Folsom Dam in drier years (diﬀerence of 20,000 AFY). The total additional water above baseline for PCWA and City of Roseville is up to 47,000 AFY.

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Table 4. PCWA’s American River Diversions (2014–2023), AFY

Year

American River
Pump Station

City of
Roseville1
San Juan
Water
District1
Sacramento
Suburban
Water
District1
Central Valley
Project2

Total
2014 16,039 12,164 8,727 0 0 36,930
2015 24,028 18,296 253 0 0 42,577
2016 4,394 1,116 8,884 11,274 0 25,668
2017 3,459 0 9,028 12,145 0 24,632
2018 4,466 0 9,258 12,002 0 25,726
2019 4,457 0 8,274 12,382 0 25,113
2020 10,947 7,146 9,663 661 0 28,417
2021 35,7713 14,267 8,775 0 0 58,813
2022 12,831 27,713 9,570 0 0 50,114
2023 13,088 2,363 0 10,749 0 26,200
Average 12,948 8,307 7,243 5,921 0 34,419

1. MFP water that is rediverted through the municipal intake at Folsom Dam, which is authorized under existing Warren Act contracts held by PCWA’s current wholesale customers.

2. PCWA’s point of diversion for CVP water is Folsom Dam, but its contract also includes potential for other diversions, including the Sacramento River, if the points of diversion are agreed to by the Contracting Oﬃcer.

3. Exceeded 35,000 AF of pumping due to PG&E canal outages and reduced water supply allocation.

Future Projected American River Diversions
Table 5 summarizes PCWA’s projected American River diversions at buildout when the M-N UIFR is above 950,000 AFY . PCWA’s projected American River diversions at buildout are 155,000 AFY; however, this amount would be 120,000 AFY if the RiverArc Project is successful.

See the section above describing the contextual relationship of PCWA’s American River water rights and their CVP contract for an explanation of the 120,000 AFY limitation. The total of 155,000 AFY combined with PCWA’s water delivered by PG&E from the Drum-Spaulding system is suﬃcient to meet buildout demands. In addition to these diversions, PCWA plans in dry-years to divert up to 47,000 AFY of its American River water rights downstream of the conﬂuence with the Sacramento River. This water is associated with continued environmental ﬂows described herein. These ﬂows are currently conducted under one-year water transfers through the State Water Board, however, PCWA is pursuing expansion of its place of use to facilitate these downstream diversions. PCWA’s intent to expand its American River water rights place of use is further stated under the “Project List” and “Caveats and Assurances” of this Purveyor Speciﬁc Agreement.

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Table 5. PCWA’s Projected American River Diversions (Buildout), AFY Supply Diversion Point Amount
Water Rights Permits 13856 and
13858 (consumptive)
American River Pump Station, Folsom Dam
Municipal Intake
120,000
Central Valley Project* Folsom Dam, or other diversion point agreed to by the Contracting Oﬃcer
35,000
TOTAL 155,000
*Currently being pursued at the Sacramento River (RiverArc Project) pursuant to 2000 Water Forum Agreement.

Drier Conditions Management
Condition: MN-UIFR is between 950,000 and 400,000 AF.

During drier years, PCWA will divert up to 155,000 AFY from the American River and will replace up to 47,000 AFY (27,000 AFY for PCWA and 20,000 AFY for City of Roseville) of water through reoperation of MFP reservoirs (environmental releases). The environmental releases are intended to oﬀset eﬀects of higher diversion of PCWA’s MFP water from the ARPS (PCWA) and Folsom Reservoir (City of Roseville) above the historical delivery baseline used in the current Water Forum Agreement (8,500 AFY for PCWA and 19,800 AFY for City of Roseville).

This 47,000 AFY is the environmental release at full (buildout) diversion of PCWA’s American River water rights. The amount of these environmental releases would be interpolated between 0 and 47,000 AFY based upon M-N UIFR and the combined PCWA and Roseville diversion rate above baseline in any given year. Although the environmental releases could be interpolated to be less than 10,000 AFY in a speciﬁc year, PCWA will typically release a minimum of 10,000 AFY; this is a change from the 2000 Water Forum Agreement.
59 Figure 3 presents a chart of the calculation of these releases relative to M-N UIFR at full diversion rates above baseline for both PCWA and Roseville; note the minimum of 10,000 AF commencing at M-N UIFR of 950,000 AF. A more comprehensive look-up table at variable PCWA and Roseville combined diversion rates above baseline is provided in Attachment 1 to this Purveyor Speciﬁc Agreement.

59 Released as part of a long-term water delivery contract with a downstream buyer.

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Figure 3. Proposed PCWA Environmental Flow Releases60
The environmental releases from PCWA reservoirs represent water (up to 47,000 AFY) that would not otherwise be released in drier years were it not for this commitment. PCWA will make the environmental releases contingent upon the following conditions:

1. Continued cooperation of Reclamation in storage and timing of releases from Folsom Reservoir consistent with PCWA’s recently executed Warren Act Contract.

2. PCWA’s ability to transfer/sell the released water for use below the lower American River on terms acceptable to PCWA. To facilitate this provision, PCWA is pursuing an expanded place of use of its American River Water Rights to include water purveyors that currently purchase these releases through single year transfers.

3. PCWA’s determination that it has suﬃcient water in its reservoirs to make the additional releases to mitigate conditions in dry years without jeopardizing the supply for PCWA’s customers or commitments under PCWA’s FERC license.

Details related to PCWA’s proposal for these environmental releases which support the Water Forum objectives are provided below.

Long-Term Water Delivery Contract
To provide certainty that the environmental releases into the lower American River occur in the future, PCWA executed a Memorandum of Understanding (MOU) with East Bay Municipal Utility District (EBMUD) in August 2013 regarding the long-term purchase of the environmental releases. Under the MOU, PCWA would release 10,000 to 47,000 AFY of environmental releases from the MFP into Folsom Reservoir for rediversion at the Freeport Regional Water Authority (FRWA) Intake (Freeport Intake) by EBMUD in years when the projected M-N UIFR is less than 950,000 AFY . The releases would provide

60 Environmental releases in conference years are subject to availability as described.

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environmental beneﬁts to the lower American River consistent with the objectives of the Water Forum, as well as increase dry-year water supply reliability for EBMUD.

If EBMUD is unable to use the environmental releases, PCWA would develop a back-up buyer agreement with Reclamation for use of the water downstream of the conﬂuence of the lower American River and Sacramento River. If neither EBMUD nor Reclamation can put to beneﬁcial use the drier year environmental releases, then PCWA would deliver the water to another willing buyer downstream.

Environmental releases may be scheduled and coordinated with the Water Forum and Reclamation. This coordination would be intended to enhance cold-water pool conditions in Folsom Reservoir, thus optimizing the opportunity for maintaining cooler temperatures in the lower American River. This option is subject to terms of PCWA’s recently executed Warren Act Contract with Reclamation for storage of water in Folsom Reservoir longer than 30 days.

Operations
Speciﬁc operations that PCWA is proposing in support of the Water Forum objectives include:
• Temporary storage (greater than 30 days, but less than a year) of environmental releases and/or timing of deliveries to wholesale customers via Folsom Reservoir to enhance cold-water pool and maintain/enhance temperature conditions in the lower American River; subject to Reclamation and regulatory approval.
• Rediversion of environmental releases downstream of the lower American River and Sacramento River conﬂuence for consumptive use in PCWA’s proposed expanded place of use for this water at either the Freeport Intake, or alternatively at other CVP facilities by Reclamation, as appropriate and as authorities allow, or to other downstream buyers. • Collaboration with the Water Forum and Reclamation to optimize the temperature beneﬁts of environmental releases.
• Forego PCWA’s CVP deliveries from Folsom Reservoir on the American River, and instead take delivery from the Sacramento River at RiverArc.

Driest Conditions Management
Condition: MN-UIFR is less than 400,000 AF.

It is recognized that in years when the projected M-N UIFR is less than 400,000 AFY there may not be suﬃcient water available to provide the purveyors within the Water Forum with the driest years quantities speciﬁed in their agreements and provide the expected driest years ﬂows to the mouth of the American River. In those years, PCWA will participate in a conference with other stakeholders on how the available water should be managed.

In the driest of drier years, years when M-N UIFR is less than 400,000 AFY , PCWA would implement actions to preserve MFP storage. PCWA would institute reduced deliveries (water cutbacks), as needed.

In those years, PCWA’s irrigation water deliveries may be reduced by up to 50 percent and PCWA’s

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treated water deliveries may be reduced by up to 20 percent.61 In addition, PCWA may use groundwater to reduce shortages in those years.

During Driest Conditions, delivery of environmental ﬂow releases up to 47,000 AF pursuant to “Drier Conditions Management” will be subject to available supplies, as detailed under that section.

Critically Low Storage Conditions
Condition: Potential operations in spring and summer when Folsom Reservoir storage is forecasted to reach 110,000 AF at some point in the next 12-months.

During the spring and summer, if Folsom Reservoir storage is forecasted to reach 110,000 AF at some point in the year, PCWA would conference with stakeholders, including Reclamation, on how available water should be managed.

Condition: Potential operations in summer and fall when Folsom Reservoir storage is below 110,000 AF.

If Folsom Reservoir storage is projected to be below 110,000 AF, PCWA would conference with stakeholders, including Reclamation, on how available water should be managed. PCWA would coordinate with both the City of Roseville and SJWD pursuant to their respective water supply contracts.

Several projects are being pursued to mitigate the frequency of this occurring and/or to mitigate the impact to the co-equal objectives if this does occur. These projects include: the RiverArc Project, the Sacramento Regional Water Bank, the PCWA-Roseville Cooperative Pipeline, and conservation programs.

Compliance with Making Conservation a California Way of Life No later than January 1, 2025, and by January 1 every year thereafter, each urban retail water supplier shall calculate its urban water use objective and beginning January 1, 2027, annually demonstrate compliance with its objective.

The calculation shall be based on the supplier’s water use conditions for the previous state ﬁscal year.

The objective is composed of the sum of the following:

1. A budget for indoor residential water use

2. A budget for outdoor residential water use

3. A budget for commercial, industrial, and institutional landscape with dedicated irrigation meters or equivalent technology

4. A budget for real losses

5. Budgets for variances and temporary provisions

61 PCWA’s existing water conservation eﬀorts support local water supply reliability goals and are consistent with California’s 20x2020 Program and Making Conservation a California Way of Life.

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Based on initial calculations, the State Water Board projects PCWA to have 0% reductions required in 2025, 0% reductions required in 2030, less than 5% reductions required in 2035, and 5-10% reductions required in 2040.

PCWA’s Approach to Compliance
PCWA is a leader in water eﬃciency programs in the region. PCWA has a robust water eﬃciency program and will expand on this program as described.

PCWA will continue participation in the Regional Water Eﬃciency Program, especially for regional compliance with the CII best management practices and regional non-functional turf outreach, along with regional messaging. PCWA will also participate in the statewide conservation partnership (CalWEP).

Education and Outreach
PCWA will maintain its Environmental Protection Agency (EPA) WaterSense award-winning education and outreach program as follows:
• Water eﬃciency messaging in newsletters, e-blasts, WaterWiseWednesday social media posts, paid ads on Facebook and Google
• Partnerships with local Master Gardener Programs and California Native Plant Society • Local demonstration gardens to showcase low water use plants and local native plants Enhanced Rebates
Prior to ﬁnal adoption of the regulation, PCWA enhanced its rebate program by adding a leak rebate to assist customers in ﬁnding and ﬁxing indoor and outdoor leaks. In one year, it’s become the Agency’s most utilized rebate. Commercial rebates were added, and rebate amounts were increased for turf replacement, irrigation upgrades, and smart controllers. The enhanced turf replacement can be marketed to assist with replacement of non-functional turf.

Advanced Metering Infrastructure (AMI) Data
As the Agency replaces meters and meter reading technology is replaced with AMI, customers will have real-time access to their water use and could set up leak alerts through a customer portal.

Water usage data will be evaluated and a program developed to notify customers of potential leaks, breaks or overuse.

Customers Services
Water Wise House Calls and Water Wise Business Calls will be oﬀered to help customers ﬁnd ways to use less water.

High-use letters and leak-verify work orders are generated every month after the billing department evaluates consumption, prior to sending a bill.

Commercial, Industrial, and Institutional (CII) Accounts Landscapes of CII mixed use meters will be measured to determine which are ½ acre or greater. New CII requirements will be implemented as follows:
• Classify CII customers into 22 water use categories, deﬁned by Energy STAR and the State Water Board, and maintain the list annually.

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• Design and implement best management practices for top CII users. • Design and implement turf replacement programs.

Caveats and Assurances

1. This agreement is entered into with recognition that PCWA has agreed with Reclamation to limit consumptive use of its American River water rights to 120,000 AFY – see section on “Contextual Relationship of American River Water Rights and Central Valley Project (CVP) Contract.” PCWA has a long-term CVP contract with Reclamation for 35,000 AFY . This is a total of 155,000 AFY from the American River. This amount combined with PCWA’s water delivered by PG&E from the Drum-Spaulding system (Yuba and Bear Rivers) is suﬃcient to meet buildout demands. If for any reason these supplies are signiﬁcantly reduced in amount or duration, it will be considered a changed condition, and signatories will work in good faith to renegotiate relevant portions of this Purveyor Speciﬁc Agreement.

2. During dry years, PCWA proposes to release up to 47,000 AFY of water from its upstream reservoirs, pursuant to Attachment 1, for the beneﬁt of the lower American River environment.

This proposal is discussed in detail under “Drier Conditions Management” and included in PCWA’s American River Water Rights Extension currently being processed with the State Water Board. In the 2007 petition for this extension, PCWA’s commitment to the Water Forum and stewardship of its water supply was noted by certain members of the Environmental Caucus in the letter included as Attachment 2. Signatories recognize the continuation of PCWA’s American River Water Rights is integral to achieving the proposed environmental releases. Accordingly, they are willing to support the proposal and highlight the environmental beneﬁts before the State Water Board, including a re-petition for this extension, if necessary, and an expanded place of use to include EBMUD. EBMUD is not a guaranteed buyer, even in dry years, thus it would be advantageous to have a downstream place of use adequate to ensure these environmental releases. For this reason, PCWA is also seeking to add other areas of the CVP , including refuges.

PCWA will keep the parties apprised of the development of this expansion with the State Water Board and the parties will communicate in good faith their concerns, support, or objection to this expansion as it is developed.

3. PCWA and other signatories to this agreement have proposed to divert water from the Sacramento River rather than diverting from the American River. This would allow water to continue to ﬂow down the lower American River. Signatories conditionally endorse this proposal, branded as “RiverArc,” subject to environmental analysis of the impact to the Sacramento River.

This proposal will require certain changes to PCWA’s CVP contract, including a change in point of diversion from Folsom Reservoir to the Sacramento River and expanding PCWA’s CVP place of use to include all western Placer County. Signatories will endorse these changes to PCWA’s CVP subject to continued endorsement of the RiverArc Project. In addition to its CVP contract, PCWA would like to explore an exchange provision to divert its American River water rights at the RiverArc Project.

Project List and Future Water Supply Reliability Eﬀorts The following is a list of PCWA planned projects related to the co-equal objectives of the Water Forum.

These include both structural and non-structural projects.

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1. American River Water Rights Extension Project, which includes the following supporting projects:
a. Expanded American River water rights place of use to include the CVP place of use for dry-year supply to EBMUD and other back-up buyers downstream of the conﬂuence with the Sacramento River.
b. Warren Act Contract with Reclamation to provide storage of environmental releases longer than 30-days in Folsom Reservoir and conveyance of water delivered to EBMUD through Folsom South Canal via Freeport Intake (acquired at time of writing this agreement).
c. Enhanced coldwater pool development in Folsom Reservoir by extended storage of environmental releases in Folsom Reservoir, coordinated with the Water Forum and Reclamation.

2. Ecological Forest Health – PCWA is partnering with a diverse group of stakeholders to implement the French Meadows Forest Restoration Project, which is a 28,800 -acre collaborative forest health project intended to reduce wildﬁre risk in the upper Middle Fo rk American River watershed. In an eﬀort to build upon the momentum of the French Meadows Project, PCWA, and several partners, has recently embarked on the Long Canyon Watershed Restoration Project. The Long Canyon Project will use proven forest health and fuels reduction treatments on 16,500 acres in an area near other public and private forest health projects that together provide landscape-level wildﬁre resilience in upper American River watershed.

3. RiverArc Project – PCWA is a partner and the administrator of the RiverArc Project. This project is a proposed regional treated water supply that will construct a new treatment plant and pipelines using an existing diversion on the Sacramento River. This project is intended to shift regional reliance on water supply from the American River to the Sacramento River.

RiverArc is a project that was originated in the Water Forum, with current partners including Sacramento County Water Agency, the City of Sacramento, the City of Roseville, and PCWA.

Other regional water suppliers may join the project in the future.

4. Conservation Programs
a. Treated Water Conservation – PCWA was the ﬁrst water purveyor in the Water Forum to comply with the best management practices of the Urban Water Conservation Council and currently has an EPA WaterSense award-winning program.

PCWA complied with its Senate Bill 7x-7 target of 20% conservation and is preparing for compliance with the regulation resulting from the Conservation as a California Way of Life program.
b. Untreated Water Conservation – Nominally 50% of PCWA’s water use is used for agriculture in its service area. This agriculture is served by an extensive canal system of 170 miles that includes ﬂow control devices, elevated ﬂumes, and “spills” that return water to the watershed at the end of each canal. Though most of this water supply comes from PCWA’s Yuba River source, water conservation is taken very

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seriously. PCWA has installed lining to prevent seepage and ﬂow control automation to minimizing spilling, thus reducing water loss in the canal system. c. Looking at the last decade, PCWA is serving a population of 30% more people with 25% less water supply as a result of these conservation programs. The source of this comparison is PCWA’s 2023 year-end report, comparing 2013 to 2023.

5. County-Wide Masterplan – PCWA implemented a County-Wide Masterplan to meet its statutory obligation to support sustainable resource management and water supply needs throughout Placer County. This plan is a process for supporting the development of projects and seeking funding to implement them, organized into eight elements as follows:
a. Unserved Areas
b. Water Infrastructure Reliability
c. Water Supply Reliability
d. Renewable Energy Development
e. Watershed Stewardship
f. Agriculture
g. Conservation and Water Use Eﬃciency
h. Public Education and Outreach
This masterplan is a “living” database of projects that are entered by stakeholders county-wide, thus creating a transparent process for implementation. Funding sources include state and federal grants and PCWA funding from water transfers and net revenues from hydropower sales. Projects include those within PCWA’s service area and the service areas of other public water agencies throughout the Placer County.

6. Placer County Conservation Program (PCCP) – The PCCP will set aside natural lands as a mitigation in balance with proposed development and other activities in western Placer County. This program is being implemented by a Joint Powers Authority of member entities.

The PCCP includes permitting and mitigation for Endangered Species Act (federal), Natural Community and Conservation Planning Act (state), and Clean Water Act (federal). It is the most comprehensive Habitat Conservation Program in the nation. Permit and mitigation fees go to purchase of set-aside properties within the program area. a. Land Development – The demarcation of natural lands and proposed land development has been established in western Placer County under this program. b. PCWA Canal System – PCWA’s canal operations, including projects such as canal lining, have been permitted under the PCCP .
c. PCWA Infrastructure – Certain proposed PCWA treated water infrastructure, including the Ophir Water Treatment Plant and west Placer County transmission main have been permitted under the PCCP .

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7. Groundwater:
a. Conjunctive use – In the 2000 Water Forum Agreement, PCWA committed to the sale of American River surface water to SSWD to help recover groundwater levels in the North American Subbasin (NASb). This provision was for “normal” and “wet” years, as deﬁned by Folsom Reservoir Unimpaired Inﬂow, for the ﬁrst ten years of the agreement, and only wet years thereafter. PCWA will continue in this commitment for any willing buyer in the Sacramento County portion of PCWA’s American River water rights place of use, subject to PCWA having adequate water for its service area, adequate storage in MFP reservoirs, and agreeable terms with the buyer.
b. PCWA could expand the geographic extent of selling American River surface water in wet years by expansion of its place of use beyond the current extent in north Sacramento County. This expansion could cover the entire NASb, or beyond that boundary if desired for expanded conjunctive use.
c. Prohibition on use for new development – The County of Placer has a General Plan policy prohibiting groundwater as a sole source of water supply for new development in western Placer County. This policy exists for two reasons: to protect groundwater levels of the NASb and to encourage vesting in the use of MFP supply that was bonded and paid for by the people of Placer County. Groundwater may be used as a backup source in drought years, as described in PCWA’s Urban Water Management Plan. This policy has resulted in stable groundwater levels in Placer County, evidenced by levels relative to Sacramento and Sutter counties. PCWA supports this policy by working with developers in the planning and investment towards water supply infrastructure.

8. Wholesale Water Supply Contracts – PCWA provides both Yuba River and American River water to wholesale customers in its Zone 6 service area of western Placer County and within the American River water rights place of use. Wholesale service is provided pursuant to individually negotiated water supply contracts with the following:
a. City of Roseville, as amended on May 18, 2023, 30,000 to 44,000 AFY via Folsom Reservoir.
b. SJWD, as amended on April 17, 2025, 10,000 AFY via Folsom Reservoir. c. SSWD, as amended on November 16, 2020, 8,000 AFY via Folsom Reservoir. d. EBMUD, as amended on July 30, 2018, 47,000 AFY via Sacramento River at Freeport. e. City of Lincoln, December 10, 2012, 35,986 AFY via treated water deliveries8. f. California American Water, July 6, 2025, 10,825 AFY via treated water deliveries8. g. Small water systems throughout PCWA’s Zone 6 service area, 2,971 AFY via untreated and treated water deliveries.62

62 These wholesale demands are the amounts provided by PCWA’s 2020 Urban Water Management Plan.

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Attachment 1: Lookup Table of Environmental Flow Releases (AF)

Folsom Mar-Nov Unimpaired Flow Projection (TAF)
400 450 500 550 600 650 700 750 800 850 900 950
PCWA and Roseville Combined Diversion above 1995 Baseline (AF) 0 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 1,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 2,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 3,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 4,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 5,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 6,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 7,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 8,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 9,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 11,000 11,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 12,000 12,000 10,909 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 13,000 13,000 11,818 10,636 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 14,000 14,000 12,727 11,455 10,182 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 15,000 15,000 13,636 12,273 10,909 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 16,000 16,000 14,545 13,091 11,636 10,182 10,000 10,000 10,000 10,000 10,000 10,000 10,000 17,000 17,000 15,455 13,909 12,364 10,818 10,000 10,000 10,000 10,000 10,000 10,000 10,000 18,000 18,000 16,364 14,727 13,091 11,455 10,000 10,000 10,000 10,000 10,000 10,000 10,000 19,000 19,000 17,273 15,545 13,818 12,091 10,364 10,000 10,000 10,000 10,000 10,000 10,000 20,000 20,000 18,182 16,364 14,545 12,727 10,909 10,000 10,000 10,000 10,000 10,000 10,000 21,000 21,000 19,091 17,182 15,273 13,364 11,455 10,000 10,000 10,000 10,000 10,000 10,000 22,000 22,000 20,000 18,000 16,000 14,000 12,000 10,000 10,000 10,000 10,000 10,000 10,000 23,000 23,000 20,909 18,818 16,727 14,636 12,545 10,455 10,000 10,000 10,000 10,000 10,000 24,000 24,000 21,818 19,636 17,455 15,273 13,091 10,909 10,000 10,000 10,000 10,000 10,000 25,000 25,000 22,727 20,455 18,182 15,909 13,636 11,364 10,000 10,000 10,000 10,000 10,000 26,000 26,000 23,636 21,273 18,909 16,545 14,182 11,818 10,000 10,000 10,000 10,000 10,000 27,000 27,000 24,545 22,091 19,636 17,182 14,727 12,273 10,000 10,000 10,000 10,000 10,000 28,000 28,000 25,455 22,909 20,364 17,818 15,273 12,727 10,182 10,000 10,000 10,000 10,000 29,000 29,000 26,364 23,727 21,091 18,455 15,818 13,182 10,545 10,000 10,000 10,000 10,000 30,000 30,000 27,273 24,545 21,818 19,091 16,364 13,636 10,909 10,000 10,000 10,000 10,000 31,000 31,000 28,182 25,364 22,545 19,727 16,909 14,091 11,273 10,000 10,000 10,000 10,000 32,000 32,000 29,091 26,182 23,273 20,364 17,455 14,545 11,636 10,000 10,000 10,000 10,000 33,000 33,000 30,000 27,000 24,000 21,000 18,000 15,000 12,000 10,000 10,000 10,000 10,000 34,000 34,000 30,909 27,818 24,727 21,636 18,545 15,455 12,364 10,000 10,000 10,000 10,000 35,000 35,000 31,818 28,636 25,455 22,273 19,091 15,909 12,727 10,000 10,000 10,000 10,000 36,000 36,000 32,727 29,455 26,182 22,909 19,636 16,364 13,091 10,000 10,000 10,000 10,000 37,000 37,000 33,636 30,273 26,909 23,545 20,182 16,818 13,455 10,091 10,000 10,000 10,000 38,000 38,000 34,545 31,091 27,636 24,182 20,727 17,273 13,818 10,364 10,000 10,000 10,000 39,000 39,000 35,455 31,909 28,364 24,818 21,273 17,727 14,182 10,636 10,000 10,000 10,000 40,000 40,000 36,364 32,727 29,091 25,455 21,818 18,182 14,545 10,909 10,000 10,000 10,000 41,000 41,000 37,273 33,545 29,818 26,091 22,364 18,636 14,909 11,182 10,000 10,000 10,000 42,000 42,000 38,182 34,364 30,545 26,727 22,909 19,091 15,273 11,455 10,000 10,000 10,000 43,000 43,000 39,091 35,182 31,273 27,364 23,455 19,545 15,636 11,727 10,000 10,000 10,000 44,000 44,000 40,000 36,000 32,000 28,000 24,000 20,000 16,000 12,000 10,000 10,000 10,000 45,000 45,000 40,909 36,818 32,727 28,636 24,545 20,455 16,364 12,273 10,000 10,000 10,000 46,000 46,000 41,818 37,636 33,455 29,273 25,091 20,909 16,727 12,545 10,000 10,000 10,000 47,000 47,000 42,727 38,455 34,182 29,909 25,636 21,364 17,091 12,818 10,000 10,000 10,000

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Attachment 2: Letter of Support for Petition for Extension of Time with State Water Resources Control Board
Letter continues
on next page.

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Attachment 2: Letter of Support for Petition for Extension of Time with State Water Resources Control Board

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Sacramento County Water Agency
Purveyor Specific Agreement
Updated: January 8, 2026
Purveyor Background
Sacramento County Water Agency (SCWA) encompasses seven service areas and provides retail water service to 70,000 residential and commercial customers in Sacramento County. SCWA also wholesales water to Elk Grove Water District.

SCWA’s seven service areas are served with a unique set of water supplies including surface water, groundwater, and non-potable (recycled) water. Figure 1 presents a map of each of SCWA’s service areas.

Figure 1. SCWA Service Areas

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Surface Water and Groundwater Management
Current demands in the SCWA service are close to 40 thousand acre-feet (TAF) per year and are expected to grow to just below 80 TAF/year by 2045 (though the updated regulations on water use eﬃciency will need to be considered). The most recent estimates for buildout predict a total demand of 102,400 acre- feet per year (AFY) in the year 2052. Table 1 summarizes SCWA annual demands.

Table 1. SCWA Demands (Nearest TAF Annually)
Current 2045 2052
Demand 40 80 102
The highest surface water availability on a yearly basis is calculated in the 2016 Water System Infrastructure Plan (WSIP) at 89,000 AFY with the lowest being 32,100 AFY . The long-term annual average is 71,858 AFY . Any demand not made up by surface water is ﬁrst made up with recycled water (up to 3,300 AFY at buildout) and ﬁnally groundwater. Table 2 is extracted from Table 4-3, Zone 40 Water Supply Portfolio, in the 2016 WSIP .

Table 2. Surface Water Availability (AFY)
Wet/Average Year Drier Year Driest year Long-term average 89,300 43,350 32,100 71,858
Below is a list of the SCWA service areas outside of Zone 40 and a general description of current supplies. A summary is provided as Table 3.
• Metro Air Park: Water supply delivered from the City of Sacramento to meet current demands of approximately 125 acre-feet and 2045 demands of approximately 5,715 acre-feet. o City of Sacramento Wholesale/Wheeling Agreement - Metro Air Park (1.1 TAF) • Northgate 880: Water supply is derived from SCWA’s groundwater supplies to meet current demands of approximately 1,345 acre-feet and 2045 demands of approximately 1,365 acre-feet. • Arden Park Vista: Water supply is derived from SCWA’s groundwater supplies to meet current demands of approximately 3,560 acre-feet and 2045 demands of 3,217 acre-feet. • Southwest Tract: Water supply is derived from a water supply contract with California American Water to meet current demands of approximately 30 acre-feet and 2045 demands of approximately 24 acre-feet.
o Contract with California American Water is for 30 acre-feet per year • Hood Water Maintenance District: The Hood Water Maintenance District service area water supply is entirely derived from SCWA’s groundwater supplies to meet current demands of approximately 30 acre-feet and 2045 demands projected to be 31 acre-feet. • East Walnut Grove: The East Walnut Grove service area water supply is entirely derived from SCWA’s groundwater supplies to meet current demands of approximately 60 acre-feet and projected 2045 demands of 56 acre-feet.

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Table 3. Summary of Service Area Descriptions
Service Area Demand (af/yr) Supplies Current 2045
Metro Air Park 125 5,715 City of Sacramento Contract
Northgate 880 1,345 1,365 Groundwater
Arden Park Vista 3,560 3,217 Groundwater
Southwest Tract 30 24 Cal Am Contract
Hood Water Maintenance District 30 31 Groundwater
East Walnut Grove 60 56 Groundwater
Self-supplied groundwater is the sole source of water served in all areas where a contract or entitlement is unavailable. Most of these areas are legacy systems that were taken over by SCWA and are at or near buildout.

Zone 40 Demand and Supply
Below is a general description of Zone 40 and its supplies.

Zone 40 has multiple sources of surface water and remediated groundwater taken through the Freeport Regional Water Authority (FRWA) intake and pipeline and treated at Vineyard Surface Water Treatment Plant (VSWTP), recycled water, and groundwater to meet customer demands (Table 4). • Zone 40 potable water supplies consist of three water rights from the Sacramento River, two Central Valley Project contracts, a contract for remediated groundwater with Aerojet, a contract supply from North Delta Water Agency, and groundwater supplies to meet current demands of approximately 37,620 acre-feet and 2045 demands of 74,388 acre-feet. • Zone 40 non-potable supplies consist of a contract for recycled water supplies from Sacramento Area Sewer District to meet current non-potable demands of approximately 962 acre-feet and 2045 demands of approximately 3,300 acre-feet.

Table 4. Zone 40 Demand (AFY)
Service Area Current 2045
Zone 40 37,620 74,388
Surface Water and Groundwater taken as Surface Water Available in Zone 40 includes:
• Appropriative Water Right Permit 21209 (71 TAF)
• Central Valley Project, SMUD Contract (30 TAF)
• Central Valley Project, Fazio Contract (15 TAF)
• Aerojet Groundwater Extraction and Treatment (GET) Water—remediated Groundwater taken as Surface Water (8.9 TAF)
• License 1062 (805 AF) (Airport Water Right)
• License 4060 (101 AF) (Airport Water Right)
• North Delta Water Agency Contract (450 AF)
• Recycled Water (3.9 TAF)

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• Southern California Water Company Water - Emergency Supply – (1.6 TAF) • City of Sacramento American River Place of Use (Small Overlap Area – Volume Determined by Demands in Area)
It is evident that the SCWA service area with the largest demand, by far, is the Zone 40 area. The Zone 40 Water Supply Master Plan details operational policy for the area. Groundwater is the last supply source used with preference to surface and recycled water when feasible. SCWA is beginning the process to update the Zone 40 Water Supply Master Plan as of the writing of this Purvey Speciﬁc Agreement (PSA).

Any Zone 40 Water Supply Master Plan will be available to the public for review. The Master Plan is available from SCWA.

Historical SCWA Contributions to the Co-Equal Objectives Since the signing of the original Water Forum Agreement, SCWA has invested heavily in supporting the Water Forum co-equal objectives through investment in its conjunctive use system as described in the 2000 Water Forum Agreement PSA. Conjunctive use is practiced in the largest SCWA service area – Zone

40. The investment and continued partnership in the FRWA intake on the Sacramento River and accompanying VSWTP have been a costly undertaking both for current and future customers in Zone 40.

The FRWA intake is located downstream of the American River conﬂuence and, when opportunities arise, allows for American River water to be diverted after it has traveled the full distance of the Lower American River (LAR), thus allowing this water to be used for LAR corridor health.

Introduction of surface water into the Zone 40 area has directly beneﬁted groundwater elevations in the South American Subbasin. Figure 2 shows the 20 Year Groundwater Level Trends, the green dots indicating increasing groundwater elevations. The map clearly shows that there is a positive trend in groundwater levels in the SCWA service area since the startup of VSWTP and the FRWA intake. This is also in stark contrast to the trends in other parts of the State of California.

Figure 2. 20-Year Groundwater Level Trends

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SCWA is proud to have met the commitments of its 2000 PSA. Along with the partnership of the caucuses in the Water Forum, the will of the SCWA Board, partnership with East Bay Municipal Utility District (EBMUD) through FRWA, investment by current customers, and investment by the development community ensured that there were resulting positive eﬀects.

SCWA has developed a Water Shortage Contingency Plan which addresses the requirements in California Water Code Section 10632 of the Urban Water Management Planning Act. The Water Shortage Contingency Plan may be used by SCWA to address water shortages as they may arise. See the plan, located on SCWA’s website, for an up-to-date list of Water Shortage Stages and Suggested Actions.

Along with SCWA speciﬁc investments, SCWA has also been a major ﬁnancial contributor to the Water Forum Successor Eﬀort and Habitat Management Eﬀort since signing the 2000 Water Forum Agreement.

There have been many projects in and around the LAR that beneﬁted from this funding.

SCWA Surface Water Framework
SCWA’s supply portfolio and location oﬀers unique opportunities to support the Water Forum coequal objectives moving forward. This section reviews those opportunities and describes the proposed framework for commitments related to surface water diversions.

SCWA Opportunities in Water Forum 2050
Opportunities in Zone 40
The FRWA intake facility has a total capacity of 185 MGD while SCWA’s capacity in the facility is 85 million-gallons-per-day (MGD) (equivalent to approximately 95 TAF/year). SCWA has a design treatment capacity of 50 MGD (permitted for 60 MGD at the very upper limit of production) at the VSWTP (equivalent to approximately 56 TAF/year and 67 TAF/year, respectively). Plans include expanding the VSWTP to 100 MGD capacity (112 TAF/year) but this investment is at least 10 years in the future.

Additionally, SCWA has an agreement with the City of Sacramento for ﬁrm capacity of 11 MGD at the Franklin Intertie (12 TAF/year). Table 5 presents a summary of these capacities.

Table 5. Zone 40 Major Surface Water Facilities Capacity Facility Capacity (MGD)
Current Buildout
Freeport Diversion (FRWA) SCWA Share 85 85
Freeport Diversion (FRWA) Total Capacity 185 185
Vineyard WTP Capacity 50/60 100
Franklin Intertie (City of Sacramento) 11 11
In 2023, SCWA’s maximum day surface water production was 31 MGD. 2023 was an unconstrained year and SCWA had full access to its surface water entitlements.

In dry times, SCWA faces surface water curtailments. In the summer of 2022, SCWA had no Central Valley Project water available and Term 91 was in eﬀect, so the Permit 21209 water right was curtailed. This curtailment was based on statewide conditions, despite near average precipitation in the American River watershed. During this time, SCWA was only able to operate the VSWTP part time since the only water supplies available were the smaller, more senior water rights and Aerojet GET water. The vast majority of

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the SCWA capacity in the FRWA intake and VSWTP plant was unused during this time. SCWA met the majority its demands with groundwater. If SCWA had access to surface water there would have been an opportunity to deliver surface water to customers rather than groundwater, which would have beneﬁtted the groundwater basin. Additionally, since the FRWA intake is located downstream of the conﬂuence of the LAR and the Sacramento River, any American River surface water deliveries would have travelled down the LAR providing beneﬁt to the entirety of the LAR by improving ﬂow conditions. The potential beneﬁts for the LAR could be especially signiﬁcant in years like 2021 when precipitation across the state (including the American River watershed) was exceptionally low through the summer months.

Flows in the LAR in the summer of 2021 were very low, and river temperatures were dangerously warm due to the extended drought conditions. Additional LAR ﬂows, in the form of cold water from upstream or Folsom storage, could have been beneﬁcial if coordinated and timed based on the needs of the river.

Given the junior nature of the majority of SCWA’s surface water entitlements there is capacity available at the FRWA intake and through the VSWTP that could be used to meet SCWA demands. There may be partnership opportunities that could take advantage of this situation to move both more and colder surface water through the LAR.

Any decision to take additional surface water in partnership with others in the region would have to include aﬀordability as a parameter.

The opportunities for SCWA, in its Zone 40 service area, to contribute to both Water Forum co-equal objectives of water supply reliability and river corridor health, while adhering to the guiding principles for surface water diversions are stated below:

1. Increased surface water diversions at the FRWA intake at times when additional ﬂow could help the LAR or beneﬁt the co-equal objectives.
o Utilize partnership opportunities.
 Support the City of Folsom as they explore a partnership which could add reliability to the regional water supply system as well as allow more ﬂow in the LAR. SCWA commits to supporting the eﬀort from a technical perspective as well as working on the aﬀordability of the partnership.
 Support Golden State Water Company with any future planning that could involve partnership and FRWA. SCWA will continue to work on upgraded intertie projects as well as other opportunities as they arise.
 Continue partnership with the City of Sacramento. This partnership has been critical to Bay Delta processes. SCWA and the City of Sacramento have a formal agreement to work together to provide environmental surface water ﬂows as a part of the Regional Water Authority American River Terms for Ecosystem Support and Infrastructure Assistance Needs (ARTESIAN) Project Agreement.

SCWA commits to continuing to foster this partnership and working together to continue to have positive eﬀects on the co-equal objectives. SCWA and the City of Sacramento have removed some barriers to partnership by working on aﬀordability of wholesale supplies, trading of water, and encouraging surface

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water use above and beyond what would be required to provide environmental ﬂows through groundwater substitution.
 SCWA will continue its partnership with EBMUD. Both are a part of the FRWA Board. SCWA will continue to work with EBMUD on projects that support the coequal objectives such as supporting partnerships that EBMUD develops with others to move more water through the LAR at times those additional ﬂows are a beneﬁt.
 SCWA will continue its partnership with California American Water, working to expand wholesale water delivery to the water company from SCWA’s conjunctive use system.
 SCWA will look to expand partnerships with upstream purveyors to establish projects that could beneﬁt Water Forum co-equal objectives and make full use of the FRWA intake and the SCWA system.2. P
rioritize surface water diversions in wet conditions to allow groundwater recharge. o Eﬀectively this means taking surface water to the maximum extent possible when it is av
ailable.

3. As of 2025, SCWA is piloting an Aquifer Storage and Recovery (ASR) well located on the same parcel as the VSWTP . While SCWA can supply potable water sustainably to its customers today and through buildout, SCWA is looking at ASR opportunities to expand system storage i n
pr
eparation for climate change impacts into the future.

Opportunities Outside of Zone 40
Opportunities exist outside of Zone 40 in the groundwater-supplied service areas where a potential partner is close. For example, there could be the possibility of partnerships that would supply the Northgate 880 and Arden Park service areas with surface water. Entitlements that had a place of use to cover these areas would need to exist and interties would need to be built. Aﬀordability would be a major concern.

Demand Management
SCWA currently lists Water Eﬃciency and Conservation requirements on its website. Some of these include the following:
• SCWA limits the outdoor water schedule of its customers’ lawns and landscapes to certain days based upon street address.
• SCWA recommends water eﬃciency actions such as Stress Your Lawn, Save Your Trees; Check Soil Moisture; Water Plants Early; Transition to a Low-Water Garden; and the overarching B e
W
ater Wise program.
• SCWA currently provides rebates such as Cash for Grass, High Eﬃciency Clothes Washers, High Eﬃciency Toilets.
• SCWA also asks customers to report water waste through the website and provides a discount on the customer’s bill for low water usage.

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Finally, SCWA maintains a Water Shortage Contingency Plan which details conservation actions to be taken when diﬀerent stages of conservation are required.

Changes in regulations, such as those in the Making Conservation a California Way of Life regulation, have occurred and will continue to change during the life of this agreement. SCWA is legally bound to follow the regulations and SCWA commits to working to meet these requirements. The Making Conservation a California Way of Life regulation will likely require SCWA customers to limit the use of water per the regulation.

SCWA commits to thoroughly exploring the topic of demand management through the Master Plan update process. Part of the scope of work of the update will be to project demands moving forward, compare them to the regulatory requirements, and assess if additional work needs to be done to lower demands. SCWA’s goal would be to develop and implement a cost-eﬀective plan to meet its legal requirements while also providing for the livability of the community and keeping potable water as aﬀordable as possible to the end users.

Framework Summary
This section summarizes the SCWA proposal for Water Forum 2050 commitments related to surface water diversions in terms of their contributions to the coequal objectives and proposed investments (projects).

Contributions to River Corridor Health
• Reduce direct surface water diversions on the LAR by taking water at FRWA. o The FRWA facilities oﬀer a unique opportunity in dry years. When water resources are scarce, and other purveyors may be reducing diversions to allow ﬂow down the American River for out-of-basin transfers and/or relying more heavily on groundwater resources, SCWA can continue to take water at Freeport to alleviate potential stress on the groundwater basin while also allowing surface water to provide ﬂow and temperature beneﬁts for the LAR. Future opportunities would rely on partnerships with other agencies to ensure there are buyers and sellers of water available for any transfers. • Continued long-term funding for the Habitat Management Element (HME) and the Water Forum Successor Eﬀort (WFSE) has been a crucial factor for supporting healthy and viable conditions for LAR salmonids through the installation of critical habitat and development of the Flow Management Standard.

Contributions to Water Supply Reliability
• Reduced dependence on groundwater
o This has been implemented as part of the commitments of the original WFA and the completion of FRWA.
• Delivery of surface water supplies to other service areas.

Future SCWA Projects and Investments
• Regional Water Transfers and Agreements (partnerships)

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o Ensure aﬀordability in all hydrologic conditions
• Investments in Water Supply Infrastructure
o Improved interties
o Improved groundwater infrastructure including possible ASR o Expand treatment capacity at VSWTP
o Provide surface water supplies to groundwater-only service areas o Continue planning level investment in the RiverArc (or similar northern Sacramento County surface water diversion) project.
o Potential infrastructure to connect existing outlying service areas.

Water Forum Commitments to SCWA
Full Endorsement of the following, including letters of support:
• Support Protection of Existing Surface Water Entitlements Including:
o Signatories will support the continued use of Permit 21209 as an important means to supporting the coequal objectives, speciﬁcally groundwater management and the protection of the LAR. SCWA intends to continue to use Permit 21209 surface water when available to support the coequal objectives and to sustain the groundwater table.

Use of these supplies is often more expensive than groundwater but may be essential to managing groundwater objectives, including drought reserves to be available during curtailments. If the State Water Board or the Legislature proposes global changes to water rights, each Water Forum member may decide what position to take on the proposal without rescinding agreed-upon support for the use of Permit 21209 as an important means to supporting the coequal objectives.
o Signatories will support the use of higher cost surface water supplies when available to build historic use so that groundwater will be available during curtailments. This will require SCWA to continue to use the surface water when it meets the co-equal objectives to build historic use as well as to rest the groundwater table. Use of these supplies is more expensive than groundwater.
• Signatories will support the following Capital Projects which are described in the WSIP and contemplated in the 2005 WSMP or amendments to serve lands within the Urban Services Boundary (as of 12/1/2025) and have completed the CEQA process (before 12/1/2025). No Capital project endorsement is considered Full Endorsement if it wasn’t listed as a capital project in the existing 2016 WSIP .
o Expansion of VSWTP to 100 MGD. The FRWA intake and VSWTP were developed to leave ﬂows in the American River to protect the LAR and the Parkway. Water is diverted downstream of the conﬂuence of the American River and Sacramento River, oﬀ the Sacramento River, at the FRWA intake and treated at the VSWTP to meet potable

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demands in the Zone 40 area. Expansion of the VSWTP to its ultimate capacity is essential to continue the project to the ultimate extent envisioned in the original Water Forum Agreement.
o Expansion of the Agency’s Transmission Main and water production system, including the North Service Area (NSA) Phase B pipeline project and NSA Terminal Tank Facility, as described in the 2005 Zone 40 Water Supply Master Plan (including amendments up to November of 2025) and further reﬁned in the 2016 Zone 40 Water System Infrastructure Plan to allow surface water to eﬃciently ﬂow to service areas within Zone 40. • SCWA agrees that the Capital Improvement List in the 2016 Zone 40 Water System Infrastructure Plan that is fully endorsed is the one that existed in 2016. Any updates to the capital improvement list will not have full endorsement.
• Signatories will support investment and funding for projects and programs through equitable and fair rates and fees required to honor commitments in this PSA and support the coequal objectives.

Conceptual Endorsement of the following, meaning a commitment by signatories to explore the ideas:
• River Arc Project
• Support for SCWA’s participation in the Water Bank and expansion of conjunctive use • Support for implementation of the South American and North American Groundwater Sustainability Plans
• Partnerships that expand water availability for use through FRWA including expansion of existing entitlement place of use, changes in point of diversion to include FRWA, etc. • Additional interties between partner agencies to expand conjunctive use in the region. • Additional surface water entitlements, either procured or by contract through partnerships.

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February 2026 Sacramento Municipal Utility District PSA 259

Sacramento Municipal Utility District
Purveyor Specific Agreement
Updated: January 8, 2026
Purveyor Background
The Sacramento Municipal Utility District (SMUD) serves electricity to most electricity users in Sacramento County and small portions of Yolo and Placer Counties.

SMUD’s core value of environmental leadership is a guiding principle that drives eﬀorts to minimize impacts and encompass all aspects of SMUD operations. These principles support collaborations with the Water Forum and their referenced coequal objectives.

In the 1950s and 60s, SMUD developed a system of reservoirs on the tributaries to the south and middle forks of the American River for power generation. SMUD also developed Rancho Seco Nuclear Generating Station in the southeastern part of Sacramento County, which was later decommissioned, with Cosumnes Power Plant (CPP) later being constructed nearby. The CPP uses American River water for thermal power generation. SMUD maintains Rancho Seco Lake onsite, which serves as a backup water supply for the CPP .

In 1970, SMUD entered a Water Service Contract (WSC) with U.S. Bureau of Reclamation (USBR) for delivery of up to 60,000 acre-feet per year (AFY) of CVP water for municipal and industrial use. In 2006, with concurrence by USBR, SMUD assigned Sacramento County Water Agency (SCWA) the right, title, and interest on a portion of SMUD’s Central Valley Project (CVP) contract consisting of 30,000 AFY . The assignment allowed SCWA rights to renew the contract. The original SMUD WSC agreement expired in 2012 but was replaced by a repayment CVP contract (which does not expire). SMUD currently has a repayment contract with USBR for 30,000 AFY .

The point of diversion for SMUD’s entitlement is the Folsom South Canal. SMUD does not have a current need for this entitlement, though it could require the full amount depending on future energy generation-related needs. Unless or until SMUD determines that it should make a permanent transfer of that entitlement, SMUD may choose to make temporary transfers and any water that would otherwise be diverted under that entitlement will presumably be released by USBR to other entitlement holders or for other beneﬁcial purposes. If SMUD is considering water transfers that are expected to reduce ﬂows in the lower American River, the transfer will be disclosed to the Water Forum.

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The Folsom South Canal is located approximately 3.6 miles west of the SMUD Rancho Seco property. The Canal is a 26.98-mile conveyance owned and operated by USBR as part of the CVP . The canal typically operates at less than 1 percent of its hydraulic capacity and traverses generally south from Lake Natoma on the American River in eastern Sacramento County to a pumping plant owned and operated by East Bay Municipal Utility District. In terms of overall volume conveyed, SMUD is the primary user of the Folsom South Canal, which supplies both the Cosumnes Power Plant and Rancho Seco Lake.

Rancho Seco Lake is an oﬀ-stream storage reservoir located approximately one mile east and upstream of Cosumnes Power Plant. The lake is kept full year-round with Folsom South Canal water and incidental rainfall runoﬀ. Water is delivered through a turnout located approximately 700 feet upstream from the Laguna Creek siphon, on the Folsom-South Canal. Water from the turnout is pumped east through a 3.2- mile long, 66-inch diameter pipeline to the Rancho Seco site, and other pipelines convey water to Rancho Seco Lake and CPP .

Rancho Seco Lake is a small reservoir near Clay Creek. The surface area of Rancho Seco Reservoir is approximately 165 acres and is contained by an earthen dam constructed in 1972. The reservoir has a capacity of 2,850 acre-feet (AF). The maximum dam height is approximately 60 feet, total length is 1,800 feet, and crest width is 28 feet. The dam was designed and constructed to standards established by the State of California, which include consideration for earthquake and extreme ﬂood events.

Surface Water Management
Current Diversions
During the last 10 years, SMUD’s diversions from the American River for consumptive purposes have ranged from 6,131 AF in 2013 to 3,674 AF in 2023. These diversions could increase should SMUD decide to reoperate the CPP to use alternative fuels that have a greater water demand or undertake other power generation related projects with a consumptive demand, including but not limited to hydrogen production or alternative renewable generation. SMUD has also made temporary assignments of its entitlement to the City of Roseville. SMUD will continue to explore and participate in assignments, transfers, and similar arrangements.

Future Projected Diversions
It is diﬃcult to predict how much water SMUD will divert and use over time. SMUD’s current diversions could increase should SMUD decide to reoperate the CPP to use alternative fuels that have a greater water demand or undertake other power generation related projects with a consumptive demand, including but not limited to hydrogen production or alternative renewable generation. SMUD has also made temporary assignments of its entitlement to the City of Roseville. SMUD will continue to explore and participate in assignments, transfers, and similar arrangements.

Drier Conditions Management
In drier years, any assignments of SMUD’s water service entitlement will be subject to USBR’s available supply. The CPP will need to operate during drier years to meet critical local and regional electrical demands. In fact, the need to operate the CPP could increase in drier years due to dry year reductions in hydroelectric supply or potentially higher temperatures leading to increased use of air conditioning.

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Driest Conditions Management
During driest conditions, any assignments of SMUD’s water service entitlement will be subject to USBR’s available supply. The CPP will need to operate during drier years to meet critical local and regional electrical demands. In fact, the need to operate the CPP could increase in drier years due to dry year reductions in hydroelectric supply or potentially higher temperatures leading to increased use of air conditioning.

Critically Low Storage Conditions
In critically low storage years, any assignments of SMUD’s water service entitlement will be subject to USBR’s available supply. The CPP will need to operate during critically low storage conditions years to meet critical local and regional electrical demands. In fact, the need to operate the CPP could increase in drier years due to dry year reductions in hydroelectric supply or potentially higher temperatures leading to increased use of air conditioning.

However, it is recognized that in years when the projected unimpaired inﬂow to Folsom Reservoir is less than 750,000 AF there may not be suﬃcient water available to provide the purveyors with the driest years’ quantities speciﬁed in their agreements and provide the expected driest years’ ﬂows to the mouth of the American River. In those years, SMUD will participate in a conference with other stakeholders on how the available water should be managed. It is also worth noting that the CPP depends on the Folsom South Canal for its water supply. The pumping station needs a canal level of 107 feet at its intake. This requirement, as well as others, would be discussed in stakeholder conferences mentioned above.

Project List
Non-Structural Projects
• Water transfer agreement with Roseville for 2,000 AFY (through February 2026)

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February 2026 Sacramento Suburban Water District PSA 262

Sacramento Suburban Water District
Purveyor Specific Agreement
Updated: November 26, 2025
Sacramento Suburban Water District (SSWD) is committed to supporting good stewardship of the American River watershed and recommits to its membership in the Water Forum as a model for this eﬀort. SSWD will continue its advocacy for the health of the river through actionable, meaningful eﬀorts supporting cold water carry-over at Folsom reservoir, supporting the Flow Management Standard, habitat restoration eﬀorts and advocacy at the federal level with our U.S. Bureau of Reclamation (USBR) partners to balance the co-equal goals. Achieving the co-equal goals requires on-going actions, not just in dry years, to keep the river and groundwater basin healthy and ensure a reliable, safe, and sustainable water supply. Ultimately the Water Forum has endeavored to provide “peace on the river” while knowing that a healthy water supply is reliant upon a healthy river.

Purveyor Background
SSWD was formed on February 1, 2002, under the State of California’s County Water District Law by the consolidation of the Arcade Water District (AWD), established in 1956, and the Northridge Water District (NWD), established in 1958.

The Local Area Formation Commission approved the reorganization of Del Paso Manor Water District (DPMWD), established in 1954, into SSWD as of June 30, 2025. After June 30, 2025, DPMWD ceased to exist and SSWD oﬃcially integrated all aspects of the former district into operations of the SSWD as the Del Paso Manor Service Area (DPMSA). The DPMSA will be operated as a separate water system until the DPMSA system facilities have been suﬃciently rehabilitated and replaced to the same standard as the SSWD water system, and the SSWD Board of Directors determines that the two service areas will be merged and operated as a single water system.

SSWD is in Sacramento County, north of the American River and serves a large suburban area, including portions of Citrus Heights, Carmichael, North Highlands, City of Sacramento (City), Antelope, Arden Arcade, and McClellan Park (formerly McClellan Air Force Base). SSWD’s service area covers approximately 37 square miles (23,690 acres of land) and serves water to an estimated population of 199,298 (based on the 2020 census) through approximately 48,853 service connections, 47,162 of which are metered. There are 1,691 unmetered service connections in the DPMSA that will be metered by 2035. SSWD’s territory is substantially built out. Other than residential and commercial in-ﬁll projects,

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and industrial and commercial development at McClellan Park, SSWD does not expect signiﬁcant additional development within its territory.

Water System Facilities
SSWD’s distribution system, including storage, pump stations and interconnections, has approximately 720 miles of pipeline that range in size from 48-inch transmission mains down to 4-inch distribution mains. There are 48 emergency interties with neighboring agencies along SSWD’s service boundary.

SSWD has 6 storage tanks with a collective capacity to hold approximately 15.8 million gallons of water.

SSWD has a total of 7 booster pumping stations, three of which are co-located with major storage tanks.

SSWD pumps its groundwater from approximately 80 permitted groundwater wells. All the groundwater wells pump directly into the distribution system and range between 270 and 1,036 feet deep. SSWD also has facilities to receive treated surface water from Folsom Reservoir and the Lower American River.

Groundwater Wells
SSWD currently has 80 permitted wells in the North American Subbasin (NASb) that are connected to the potable water system, with a current production capacity of approximately 125 million gallons per day (MGD).

SSWD is, by regulation, 100% reliant on groundwater to ensure continuous supply to its customers.

Therefore, SSWD must maintain groundwater production capacity necessary to meet 100% of its customers’ needs. SSWD’s groundwater wells and storage facilities are capable of producing 100% of SSWD’s annual water demand.

SSWD pumps from the NASb, which is jointly managed on behalf of SSWD and other municipal pumpers by the Sacramento Groundwater Authority under a Groundwater Sustainability Plan adopted consistent with the Sustainable Groundwater Management Act (SGMA). SSWD works with other groundwater pumpers in the basin to sustainably manage groundwater supply consistent with SGMA.

Surface Water
In addition to groundwater, SSWD imports surface water, when available, from two supply sources:

Folsom Reservoir and the Lower American River. SSWD has no surface water rights, but has two contractual entitlements to surface water, one from the Placer County Water Agency (PCWA) for up to 29,000 acre-feet and one from the City for up to 26,064 acre-feet.

When available, SSWD purchases surface water from PCWA supplied from the Middle Fork American River and delivered to Folsom Reservoir. The PCWA water is treated by San Juan Water District (SJWD) at the Peterson Water Treatment Plant pursuant to contract and then conveyed through purchased pipeline capacity in the Cooperative Transmission Pipeline and District-owned transmission pipelines into SSWD’s water distribution system in the North Service Area. SSWD also purchases surface water when available from the City supplied from the Lower American River, which is diverted and treated by the City at its E.A. Fairbairn Water Treatment Plant and conveyed through purchased and District-owned pipeline capacity for distribution to customers in SSWD’s South Service Area.

In addition to the two contractual entitlements, SSWD purchases Central Valley Project Section 215 surface water from USBR under a long-term Warren Act contract when available.

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February 2026 Sacramento Suburban Water District PSA 264

Surface Water and Groundwater Operations
SSWD has no surface water rights.

Contractual Entitlements
As noted, SSWD has two contractual entitlements to surface water, one from the City and one from PCWA. SSWD regularly enters individual annual contracts with USBR to receive surplus Central Valley Project Section 215 water deliveries when available.

One of SSWD’s two predecessor agencies, AWD, entered into an agreement with the City to reserve a water supply for AWD’s service area within the City’s American River Place of Use. That agreement committed a portion of the City’s surface water supplies for future use by AWD, subject to annual payments. After SSWD was formed in 2002, it continued AWD’s payments to the City for the American River Place of Use water supply and AWD’s planning and design of facilities that enabled SSWD to receive treated water from E.A. Fairbairn Water Treatment Plant.

In 2004, SSWD and the City entered into a Wholesale Water Supply Agreement under which the City agreed to supply up to 20 million gallons per day (mgd) of treated surface water to SSWD under the former AWD entitlement. The agreement will continue in full force and eﬀect unless terminated by mutual written agreement of the parties or by operation of law.

In 2000, SSWD’s other predecessor agency, NWD, entered into an agreement to purchase water from PCWA. When SSWD was formed in 2002, it assumed this agreement. The agreement provides that SSWD would buy surface water from PCWA at an increasing volume each year until the maximum contract amount of 29,000 acre-feet per year was reached in 2014 and then maintain this level through the expiration of the agreement in 2025. The PCWA agreement was amended in 2018 to extend its term through 2045. This permitted SSWD to secure a Long-Term Warren Act Contract for the same term (i.e., through 2045) from the USBR to wheel PCWA water supplies through Folsom Reservoir to SJWD for treatment by SJWD and then delivery to SSWD through the Cooperative Transmission Pipeline. The PCWA agreement was further amended in 2020 to reduce SSWD’s annual “take or pay” obligation from 12,000 acre-feet to 8,000 acre-feet, with the provision that if PCWA can make additional water available to SSWD in any year, SSWD has the right to take up to 21,000 acre-feet of additional water in that year.

The PCWA entitlement has limitations.
• American River Flows
o PCWA may not deliver water to SSWD in any year when the March through November unimpaired inﬂow into Folsom Reservoir is less than 1,600,000 acre-feet. o Notwithstanding the foregoing, PCWA may deliver water to SSWD in the following December through February provided water is being released from Folsom Reservoir for purposes of ﬂood protection.
• PCWA Needs
o The agreement is subject to cutback if PCWA needs any portion of the SSWD entitlement to serve PCWA customers in Placer County, or to meet PCWA’s Middle Fork Project power generation obligations to PG&E.

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• SSWD Use
o SSWD Customers – SSWD may only use the PCWA water in PCWA’s expanded Place of Use which covers SSWD’s North Service Area.
o Sale and Transfer – SSWD may sell or transfer any portion of its available PCWA entitlement within PCWA’s expanded Place of Use (e.g., to the California American Water Company).

Use
SSWD uses surface water in-lieu of groundwater pumping during water year types or conditions when such supplies can be diverted and used in portions of the SSWD service area when available under PCWA’s and the City’s water rights and it provides beneﬁts to SSWD customers or aids in meeting other local or regional objectives such as in-lieu groundwater recharge, which SSWD actively engages in as part of its Water Forum commitments.

Conjunctive Use Program
As one of the original signatories of the Water Forum Agreement (through its predecessor agency, Northridge Water District), SSWD has operated an active Conjunctive Use Program since 1998. Under this program, SSWD provides treated surface water to its customers under its City and PCWA entitlements in lieu of providing pumped groundwater . This reduces SSWD’s need to extract groundwater, which in turn allows SSWD’s groundwater supplies to be replenished through natural groundwater recharge. This operation is referred to as “in-lieu recharge” or more colloquially as “conjunctive use.”
SSWD’s groundwater wells are in the NASb, which is part of the Sacramento Valley Groundwater Basin.

While groundwater levels normally ﬂuctuate in response to hydrologic conditions, groundwater levels in the NASb declined between 1950 and 2000. There is a regional consensus that this decline was largely the result of excessive groundwater pumping.

Throughout the history of SSWD, investments in its Conjunctive Use Program have had a signiﬁcant eﬀect on bolstering groundwater supplies in the region. By supplementing its supplies with surface water when it is available, SSWD’s groundwater pumping has been reduced, thereby allowing for more groundwater recharge.

SSWD supports maintaining a sustainable groundwater basin in the NASb. Seeking opportunities to recharge groundwater requires focus if the resource is to be present when most needed. SSWD remains cognizant of the need to maintain consistency with local Groundwater Sustainability Plans and meeting the requirements of SGMA.

Water Banking
• SSWD’s in-lieu recharge program has contributed to the regional banking of over 400,000 acre- feet of groundwater since 1998.
• SSWD has banked greater than 245,000 acre-feet of groundwater to improve supply reliability since 2003.
• SSWD ﬁles annual reports with the State Water Resources Control Board to document its eﬀorts to bank groundwater. These eﬀorts have been recognized and substantiated by the State of California Department of Water Resources’ data and reporting.

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Aquifer Recovery
• Since 2003, groundwater levels have stabilized in the portion of the NASb from which SSWD pumps water. This was the result, in large part, of an increase in SSWD’s in-lieu recharge practice (i.e., increased surface water purchases by SSWD when available) and enhanced conservation practices on the part of SSWD’s customers spurred by SSWD’s various education and incentive programs.
• Groundwater level recovery, combined with absence of a robust aquifer storage (i.e., direct groundwater recharge) eﬀort in the area, underscore the general eﬀectiveness of conjunctive use programs and in-lieu groundwater banking eﬀorts.
• As demonstrated by historical groundwater level data for the Sacramento Valley, this water supply management strategy reversed the historical trend of groundwater level decline by reducing groundwater pumping to allow the aquifer to naturally stabilize and then begin to recharge.

Demand Management
SSWD’s baseline water usage per capita for the purpose of compliance with Senate Bill (SB) X7-7 was 257 gallons per capita per day (gpcd) for the years 1995-2010, with a 2020 target of 206 gpcd. At the SB X7-7 compliance date of 2020, SSWD customer usage was down to 172 gpcd, meeting the legislative mandate. For the last several years, SSWD’s gpcd has hovered around 143 gpcd. This was achieved through a variety of means, including an accelerated Advanced Meter Infrastructure program and expanded water conservation incentive and outreach eﬀorts.

Moving forward, through the Long Term Water Conservation Framework legislation (SB 606 and Assembly Bill 1668), the State of California created real-time targets for water suppliers, including SSWD, that involve a dramatic water use reduction target over the next 15 years that is tied to a residential indoor water use reduction as well as a landscape water eﬃciency target that involves reporting on landscape water demand as compared to landscape water need (as calculated by the State). This system- wide budget-based water use approach also includes a reduction in water suppliers’ system water loss (gallons per connection per day). To achieve these targets, SSWD anticipates that it will need to dramatically expand customer participation in its programs and anticipates making reﬁnements to existing programs as well as adding programs to achieve these requirements. An analysis and prioritization of potential programs is underway and engagement on this topic with the Water Forum membership is ongoing. Draft and ﬁnal work products will be provided to the Water Forum members.

Current SSWD conservation program elements are advertised on SSWD’s web page:
https://www.sswd.org/departments/conservation
While subject to change, as program eﬀectiveness is evaluated, examples of likely program enhancements beyond existing elements include:
• Monitoring and analysis of meters dedicated solely to irrigation • Expanded rebate programs for all customer classes targeting both indoor and outdoor water eﬃciency eﬀorts
• Enhanced leak repair incentive programs
• Enhanced water and energy partnership rebates

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• Enhanced residential water surveys and leak investigations • Enhanced outreach regarding best practices for water eﬃciency and water conservation See “Speciﬁc Demand Management Measures by Water Conservation Stage” in Appendix E of SSWD’s Urban Water Management Plan:
https://www.sswd.org/departments/engineering/reports/urban-water-management-plan SSWD understands that Water Code Section 10632 (a)(3)(A) requires purveyors to plan for reductions of 10%, 20%, 50%, and beyond. SSWD will follow the stages set forth in its Water Shortage Contingency Plan as declared by its Board of Directors based on operational service conditions and water supply availability.

All hyperlinks used within this PSA will be maintained and active for the duration of the agreement, or if changes are made to the online content, the changes will be communicated to the Water Forum and updated links provided.

Current Diversions
N/A
Future Projected Diversions
N/A
Drier Conditions Management
In drier years, SSWD will switch to groundwater in a discretionary fashion to meet customer demands as water resource conditions warrant. Decisions will include, but not are limited to, the need to maintain adequate levels of service, consideration of local surface water resource conditions, groundwater sustainability conditions, and successful outcomes of local banking and extraction program such as the Water Bank or agreements to make water available for the environment (e.g. Healthy Rivers and Landscapes). The surface water supplies available to SSWD (e.g., PCWA, City, USBR) may be subject to signiﬁcant reductions, up to and including curtailment, during dry years (seasonal and climatic shortages).

Based on historical data, SSWD’s water supply available from groundwater has not been impacted by annual hydrology. Groundwater reliability is consistent in all water years and is not subject to vulnerabilities from seasonal and climatic factors. After several consecutive dry years, the groundwater levels may decline, but this does not reduce the pumping capacity of SSWD’s wells. The reliability of SSWD’s groundwater supply is related to its sustainable groundwater pumping yield estimate, water banking eﬀorts, and its reliable well ﬁeld capacity that can be used to meet demands in all water year types.

Driest and Critically Low Storage Conditions Management In the driest years, SSWD will switch to groundwater in a discretionary fashion to meet customer demands as water resource conditions warrant. Decisions will include, but not are limited to, the need to maintain adequate levels of service, consideration of local surface water resource conditions, groundwater sustainability conditions, and successful outcomes of local banking and extraction program

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such as the Water Bank or agreements to make water available for the environment (e.g., Healthy Rivers and Landscapes). The surface water supplies available to SSWD from its PCWA and City surface water entitlements may be subject to signiﬁcant reductions, including curtailments, during dry years (seasonal and climatic shortages).

Based on historical data, SSWD’s water supply available from groundwater has not been impacted by annual hydrology. Groundwater reliability is consistent in all water years and is not subject to vulnerabilities from seasonal and climatic factors. After several consecutive dry years, groundwater levels may decline, but this does not reduce the pumping capacity of SSWD’s wells. On average, the groundwater level declines are reduced and recover faster because SSWD’s water banking eﬀorts have protected and increased the reliability of its groundwater supply.

Project List
SSWD understands that to support the coequal objectives and mitigate challenges facing the region under future conditions, structural and non-structural projects will be needed.

Structural
The following infrastructure projects will support eﬀorts to implement SSWD’s Purveyor Speciﬁc Agreement (PSA), and support the coequal objectives.
• New replacement groundwater facilities consistent with adopted groundwater sustainability plans
o Select new replacement wells will strategically be equipped with Aquifer Storage and Recovery capability
• New or improved interties with other purveyors, in particular ones that promote groundwater recharge
• Rehabilitation and modernization of existing water facilities • Structural projects and programs to help ensure the success of the Healthy Rivers and Landscapes Program (previously known as Voluntary Agreements) or similar tributary-speciﬁc programs (e.g., the ARTESIAN program) that improve the ecosystem, protect local water entitlements, and maintain better cold water pool conditions and management in Folson Reservoir and the Lower American River
Non-Structural
• Consolidation of water districts as approved by the State of California or the Local Agency Formation Commission
• Agreements with neighboring purveyors for conjunctive use opportunities and water supply reliability
• Continued water use eﬃciency programs and funding support • Water transfers consistent with groundwater sustainability plans and the California Water Code • Support for identifying underground storage as a beneﬁcial use of surface water • Active participation in management and other actions under the groundwater sustainability plans for the NASb

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Roseville City CouncilApril 1, 2026

Roseville City Council
April 1, 2026