2025 Urban Water Management Plan

Section 1 2025 Urban Water Management Plan Plan Introduction City of Pleasanton Public Draft | May 2026 1-1 EKI Environment & Water, Inc. 1 PLAN INTRODUCTION This section provides an overview of the City of Pleasanton’s (Pleasanton, or City) 2025 Urban Water Management Plan (UWMP or Plan), including the Plan’s purpose, its relationship to the California Water Code (CWC) and to other local and regional planning efforts, its contents, and special considerations. This 2025 UWMP has been prepared jointly by City staff and EKI Environment & Water (EKI), in accordance with the California Department of Water Resources (DWR) 2025 UWMP Guidebook.1 1.1 Background and Purpose The City is an urban retail water supplier that distributes water directly to individual water users (e.g., residents and businesses). The City purchases most of its supply from an urban wholesale water supplier, Alameda County Flood Control District Zone 7 (Zone 7 Water Agency [Zone 7]). In addition to the City, Zone 7 also supplies wholesale water to several other retailers: the California Water Service-Livermore District (Cal Water), City of Livermore (Livermore), and Dublin San Ramon Services District (DSRSD). This UWMP is a foundational document and information source that reflects Pleasanton’s historical and projected water demands, water supplies, supply reliability and potential vulnerabilities, water shortage contingency planning, and demand management programs. Among other purposes, this UWMP may be used as: • A long-range planning document for water supply reliability and system planning; and • A source for data on population, housing, water demands, water supplies, and capital improvement projects used in: - Regional water resource management plans prepared by wholesale water suppliers and other regional planning authorities (as applicable), - General Plans prepared by cities and counties, and - Statewide and broad regional water resource plans prepared by DWR, the State Water Resources Control Board (SWRCB), or other state agencies. This Plan is an update to Pleasanton’s 2020 UWMP, which was adopted in 2021. This 2025 UWMP retains information from the 2020 UWMP that remains current and relevant, incorporates updates, and includes additional information required by subsequent amendments to the Urban Water Management Planning Act (UWMP Act) (CWC §10610-10657). Although this Plan is an update to the 2020 UWMP, it was developed to be a self-contained, stand-alone document and does not require readers to reference information contained in previous UWMP updates. 1.2 UWMP Act and California Water Code The UWMP Act requires urban water suppliers to prepare an UWMP every five years and to submit this plan to DWR, the California State Library, and any city or county within which the supplier provides water supplies. All urban water suppliers (either publicly or privately owned) in California are required to prepare a UWMP if they directly or indirectly supply municipal water to more than 3,000 customers or more than 3,000 acre-feet per year (AFY) (CWC §10617). Initially enacted in 1983, the UWMP Act has been amended over time in response to water resources challenges and planning imperatives confronting California. A significant amendment was made in 2009 1 The Final 2025 UWMP Guidebook is available at: https://data.cnra.ca.gov/dataset/2025-uwmp-reporting