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<br /> <br /> <br />City of Santa Ana 8 2025 PHGs Report <br /> <br /> <br />All Contaminants – In addition, a cost estimate to treat all water produced by the City using ion <br />exchange and reverse osmosis to remove all the contaminants detected above the PHGs or <br />MCLGs was calculated. All the contaminants listed in the accompanying table may be removed <br />to non-detectable levels by ion exchange and reverse osmosis. As shown on the <br />accompanying table, achieving the water quality goals for all contaminants using ion exchange <br />and reverse osmosis could range from $14,100,000 to $99,500,000 per year, or between $309 <br />and $2,180 per service connection per year. <br /> <br />For additional information, please contact the Water Resources Division at <br />Waterinfo@santa-ana.org, or write to the City of Santa Ana, 220 S. Daisy Avenue, Santa <br />Ana, California 92703 <br /> <br /> <br /> <br />J:\2605\2605-004 - Santa Ana 2025 PHG\Santa Ana_2025 PHG_text_Final.docx <br />  <br />  <br />City Council 23 – 11 11/4/2025