CITY COUNCIL REGULAR MEETING AGENDA 9-15-26

27 Facility. Zone 7 would deliver the City’s GPQ to the City’s distribution system via its existing transmission system and turnouts. To receive groundwater from Zone 7, improvements to the City’s distribution system would also be required, including upsizing pipes and constructing a new turnout. Improvements to the City’s distribution systems would be the sole responsibility of the City. The project is estimated to be operational at the beginning of 2030. Zone 7’s surface water supply from both treatment plants have been ‘non-detect’ when tested for the PFAS constituents. However, some of Zone 7’s groundwater facilities have been impacted by PFAS. Zone 7 has implemented multiple actions to keep its treated water supply below PFAS MCLs including increasing the use of surface water, installing ion exchange PFAS treatment at the Stoneridge and Chain of Lake groundwater wells, and planning for PFAS treatment additions at the Mocho well fields (anticipated to start construction in late 2026). 2025 Urban Water Management Plan. The City’s 2025 Urban Water Management Plan (UWMP) was adopted by City Council on June 2, 2026. It was prepared and adopted in accordance with the Urban Water Management Planning Act (California Water Code §§ 10610– 10657), which requires all urban water suppliers serving more than 3,000 customers or supplying more than 3,000 acre-feet of water annually to develop and update a comprehensive water management plan every five years. The Plan is designed to comply with multiple overlapping state regulatory frameworks, including the Water Conservation Act of 2009 (SB X7- 7), which mandated a 20% statewide reduction in urban per capita water use by 2020; SB 606 and AB 1668, which imposed additional drought planning requirements including the inclusion of a Water Shortage Contingency Plan (WSCP), Drought Risk Assessments for five consecutive dry water years, and annual water supply and demand assessment reporting. The Plan must also demonstrate compliance with the Sacramento-San Joaquin Delta Reform Act of 2009, given the City's indirect reliance on State Water Project deliveries through Zone 7 Additional regulatory obligations include compliance with state and federal drinking water standards set by the EPA under the Federal Safe Drinking Water Act of 1974 and enforced in California by the State Water Resources Control Board's Division of Drinking Water under Title 22 of the California Code of Regulations, as well as compliance with the SWRCB's water loss performance standards, which require individual volumetric loss standards to be met by January 1, 2028. The Plan's key objectives are to ensure reliable water service over a 20-year planning horizon through 2045 by evaluating current and projected water supply sources against demand under normal, single-dry-year, and five-consecutive-dry-year conditions. It establishes that the City is well-positioned to meet all projected demands under normal and single-dry-year scenarios through 2045, with a projected 10% supply shortfall arising only in the fifth year of a drought beginning in 2045, which the City anticipates addressing through WSCP demand- reduction measures. The Plan further supports long-term supply diversification and resilience through the City's coordination with Zone 7 on supply augmentation projects, including the Delta Conveyance Project, Sites Reservoir, the Chain of Lakes Conveyance System, and potable reuse feasibility studies. As required by the UWMP Act, the Plan incorporates a WSCP, adopted concurrently with the UWMP by separate resolution, that serves as a standalone document to be engaged in the case of a water shortage event such as a drought or supply interruption. The primary objective of the WSCP is to ensure the City has in place the necessary resources and management responses to protect health and human safety, minimize economic disruption, and preserve environmental and community assets during water supply shortages and interruptions. Consistent with CWC § 10632, the WSCP utilizes the six standard shortage levels, ranging from up to 10% (Level 1) to greater than 50% (Level 6), and identifies a suite of Page 237 of 318