Zone 7 Water Agency

The committee discussed the status of the recycled water program, specifically regarding supply limitations during peak summer months and infrastructure investments. Additionally, the committee reviewed the state's new long-term water conservation standards, the potential impacts of legislation on indoor water usage, and the requirements for water loss reporting. The meeting concluded with a tour of the recycled water treatment plant and a discussion on future agenda items, including the Tri-Valley Local Hazard Mitigation Plan and efforts to address groundwater PFAS contamination.

The board received a project update on the Regional Groundwater Facilities Improvement Project, Phase II. Key discussion topics included the project workflow, estimated costs for supply wells, pipelines, and facility upgrades, and operations and maintenance plans for Phase III. The board was recommended to authorize the General Manager to negotiate and execute a cooperative agreement with the City of Pleasanton to proceed with the design, construction, and operation of the project phases.

This Water Shortage Contingency Plan (WSCP) for Zone 7 Water Agency outlines the strategic approach to prepare for and respond to various water shortages, including those caused by droughts and unforeseeable catastrophic events. Developed in conjunction with the 2025 Urban Water Management Plan, it details procedures for annual water supply and demand assessment, defines six standard water shortage stages with corresponding response actions (supply augmentation, demand reduction, communication, operational adjustments, and emergency response), and addresses legal authorities and financial consequences. The plan aims to maintain a highly reliable municipal and industrial water supply system, meet existing and future demands under diverse conditions, and proactively prevent service disruptions.

This 2025 Urban Water Management Plan for Zone 7 Water Agency details historical and projected water demands and supplies through the year 2050 for its service area of approximately 270,000 people. The plan serves as a foundational document outlining strategies for ensuring water supply reliability, primarily relying on imported State Water Project water while integrating local sources. It includes comprehensive water conservation efforts, a Water Shortage Contingency Plan, and assesses reliability under various hydrologic conditions, including climate change impacts. While normal and single-dry years are expected to have sufficient supply, potential shortages from 2045 in multiple-dry years are anticipated, to be mitigated through demand reduction measures and new supply projects.

This 2025 Urban Water Management Plan for Zone 7 Water Agency, an urban wholesale water supplier, outlines historical and projected water demands and supplies for approximately 267,000 customers over a minimum 20-year planning horizon. The plan details the agency's robust water supply system, including imported State Water Project water, local surface water, and managed groundwater through conjunctive use and non-local storage programs. It incorporates demand management measures, climate change considerations, and a Water Shortage Contingency Plan with five shortage levels to ensure long-term water supply reliability and sustainability for its service area.