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<br />6/02/2025 <br />Existing Conditions Report <br />Castlewood County Service Area (CCSA) <br /> <br />10 <br /> <br />5. Water Maintenance & Operations (M&O) and Capital Improvements <br />Water Source and Distribution <br />CCSA’s sole source of water is from “the Pleasanton Well Fields owned by the San Francisco Public Utilities <br />Commission (SFPUC).”19 The State Dept. of Water Resources (DWR) “...has not identified this basin as over -drafted, <br />nor is projected to be over-drafted in the future.”20 <br />Prior water rights, which originated “with an agreement between Phoebe Hearst and the Spring Valley Water <br />Company”21 in 191122 entitle CCSA to 90 MG per year at no cost. <br />Water flows to the Valley Reservoir near the Valley Golf Course; t he City of Pleasanton, by contract with the CSA, <br />“operates and maintains the Foothill Pump Station and the pipeline ”23 to CCSA and its reservoir. From the reservoir, <br />water is delivered to CCSA users and pumped to steel storage tanks . Private wells serve a small number of lots.24 <br />Water Quality <br />The water supply is disinfected “via sodium hypochlorite injection. The SFPUC monitors water quality weekly.”25 <br />Recent annual water quality reports, required by the State and prepared by ACPWA and the CCSA contract water <br />O&M provider, reported all water delivered to CCSA customers “...met all applicable federal and state drinking <br />water standards without any violations.”26 <br />In November 2024 a “Boil Water Notice” was issued for Castlewood then rescinded two days later.27 The incident <br />was caused by PGE puncturing the main water line which triggered repairs and testing.28 <br /> <br />19 2012 CCSA Water & Sewer Assessment. <br />20 2020 SFPUC UWMP, p.6-7. <br />21 Castlewood County Service Area Municipal Service Review Final. January 10, 2013. Prepared for the Local Agency Formation <br />Commission of Alameda County. Baracco and Associates, Policy Consulting Associates, LLC. (2012 CCSA MSR). <br />22 Castlewood County Service Area Water and Sewer Assessment. Prepared at the Request of Alameda County Public Works Agency. <br />October 2012. Prepared by Pakpour Consulting Group and Psomas. (2012 Sewer & Water Assessment). <br />23 FY24 Annual Report, 5/2/2023, recommending rates for FY2023-24. <br />24 The 2012 CCSA MSR reported five wells. <br />25 2020 Urban Water Management Plan for the City and County of San Francisco, Public Review Draft, April 2021. Prepared by The San <br />Francisco Public Utilities Commission. <br />26 2022 and 2023 Annual Water Quality Reports, Alameda County Public Works Agency and Coleman Engineering. <br />27 Boil Water Notice for Castlewood Estates Water System CA015008, 11/13/2024. Accessed from CPOA website. Cancellation <br />11/15/2024. <br />28 CPOA, May 14, 2025.