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Report on Water Quality Relative to the Public Health Goals <br />November 4, 2025 <br />Page 2 <br />5 <br />4 <br />0 <br />9 <br />Public Health Goal Report <br />Pursuant to the California Health and Safety Code Section 116470, the City must <br />prepare a report every three years identifying instances where detected contaminants in <br />drinking water exceed PHGs (Exhibit 1). The report is then forwarded to the State Water <br />Resources Control Board, Division of Water (DDW) for use in revising or developing an <br />MCL in drinking water. For calendar years 2022 through 2024, the City’s drinking water <br />exceeded PHGs for naturally occurring elements, such as arsenic, radium, uranium, <br />hexavalent chromium, gross alpha particle activity, and gross beta particle activity, as <br />well as for bromate, perchlorate, perfluorooctanesulfonic acid (PFOS), and <br />perfluorooctanoic acid (PFOA). <br />Importantly, the City’s drinking water continues to meet or exceed all federal and state <br />drinking water standards established by the USEPA, DDW. These standards are <br />designed to ensure water safety and protect public health. <br />The report also provides cost estimates for implementing the best available treatment <br />technologies to reduce these contaminants further, such as ion exchange and reverse <br />osmosis. The estimated annual cost to achieve PHG levels ranges from $14.1 million to <br />$99.5 million, which would impose an extraordinary financial burden on the community. <br />Given the substantial costs and the fact that the City’s water meets all mandatory health <br />and safety standards, no additional treatment programs are proposed at this time. <br />In accordance with state law, the City is required to hold a public hearing to receive and <br />respond to comments on the PHG report prior to making available for public distribution. <br />This hearing fulfills that statutory requirement. Once approved, Staff will submit a copy <br />to DDW and publish the report on the City’s website. <br />ENVIRONMENTAL IMPACT <br />There is no environmental impact associated with the action. <br />FISCAL IMPACT <br />There is no fiscal impact associated with the action. <br />EXHIBIT(S) <br />1. City of Santa Ana Report on Water Quality Relative to Public Health Goals <br />Submitted By: Rodolfo Rosas, P.E., Acting Executive Director – Public Works Agency <br />Approved By: Alvaro Nuñez, City Manager