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California American Water says Isleton’s water meets standards after treatment upgrades; arsenic levels below MCL
Summary
California American Water briefed council on Isleton’s water‑quality report and recent treatment‑plant upgrades. The company said Isleton is 100% groundwater‑supplied, that arsenic annual averages were below the MCL (reported 4.9 µg/L vs. 10 µg/L), and that automation and monitoring improvements should speed detection and corrective response.
A representative from California American Water presented Isleton’s annual water‑quality report and described recent treatment upgrades at the local plant. The company said the system is supplied completely by groundwater and outlined treatment steps for naturally occurring contaminants, including arsenic, iron and manganese.
"The maximum contaminant level is 10, and we are currently at 4.9," the representative said when discussing arsenic testing. The presenter also described automated monitoring upgrades to the local plant that enable remote alerts and faster operator response, and noted the company’s customer assistance and conservation rebate programs for residents.
Council members asked about PFAS monitoring, treatment capacity and whether treatment results are measured at intake or post‑treatment; the presenter said distribution‑system testing and annual reporting are available and that the company can provide more detailed monthly or monthly‑mean breakdowns on request.
Council asked staff to make water quality contact information and customer assistance program details available to residents; no regulatory action was taken.
