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202S WATER SHORTAGE CONTINGENCY PLAN <br /> MAY 2026/FINAL DRAFT/CAROLLO <br /> temporarily constrain capabilities, as well as any new projects that may add to system capacity. MET <br /> closely coordinates with its member agencies, including the City, on any planned infrastructure work that <br /> may impact water supply availability. Throughout each year, MET regularly carries out preventive and <br /> corrective maintenance of its facilities that may require shutdowns to inspect and repair pipelines and <br /> facilities and support capital improvement projects.These shutdowns involve a high level of planning and <br /> coordination between MET and their member agencies to ensure that major portions of the distribution <br /> system are not out of service at the same time. Operational flexibility within MET's system and the <br /> cooperation of member agencies allow shutdowns to be successfully completed while continuing to meet <br /> all system demands. <br /> Specifically for the City, as of March 2026 there are no foreseen near-term infrastructure issues that would <br /> impact supply. <br /> Following is a list of considerations that have the potential to negatively impact water supply reliability <br /> and will be considered in the AWSDA: <br /> ■ MET pipeline outages (Orange County Feeder and/or East Orange County Feeder No. 2). <br /> ■ City currently has 13 groundwater wells impacted by per- and polyfluoroalkyl substances (PFAS) <br /> contamination. <br /> ■ Planned well/pump station rehabilitation/construction projects <br /> ■ Unplanned facility outages <br /> Following is a list of considerations that have the potential to positively impact water supply reliability and <br /> will be considered in the AWSDA: <br /> ■ Drilling and constructing new wells (such as Washington Well and Flower Well). <br /> ■ Completion of PFAS Water Treatment Plant Projects &Well/Pump Station Rehabilitation Projects. <br /> ■ Advanced metering infrastructure (AMI) project implementation (expected to result in lower water use <br /> and less system losses). <br /> 3.2.2.7 Other Factors <br /> For the AWSDA, any known issues related to water quality would be considered for their potential effects <br /> on water supply reliability. <br /> PFAS are a group of thousands of manmade chemicals that includes perfluorooctanoic acid (PFOA) and <br /> perfluorooctane sulfonate (PFOS). PFAS compounds were once commonly used in many products <br /> including, among many others, stain- and water-repellent fabrics, nonstick products (e.g., Teflon), <br /> polishes, waxes, paints, cleaning products, and fire-fighting foams. Beginning in the summer of 2019, the <br /> California State Division of Drinking Water (DDW) began requiring testing for PFAS compounds in some <br /> groundwater production wells in the OCWD area. <br /> MET has voluntarily monitored PFAS in its source and treated waters since 2017. Most samples have <br /> shown non detect (ND) for all tested PFAS, including PFOA and PFOS. A limited number of other PFAS— <br /> such as PFHxA, PFBA, PFPeA, PFDoA, PFTA, and PFBS, have been detected only at trace levels below their <br /> method detection limits. PFOA and PFOS have not been detected in MET's imported or treated water <br /> supplies. Some member agencies, however, have detected these compounds in local groundwater wells, <br /> which may require treatment or source management to comply with emerging DDW regulations. As DDW <br /> CITY OF SANTA ANA <br />