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City staff outlines PFAS testing, possible treatment and a pilot plan after elevated results
Summary
Utility staff told council the city is borderline for PFOA and above the limit for PFOS, traced likely sources near the airport fire-training area, and outlined pilot-testing options (granulated activated carbon, ion-exchange, reverse osmosis) with a plan to return a written strategy and pilot authorization for council review.
City utilities staff briefed the council on per- and polyfluoroalkyl substances (PFAS) testing results and mitigation options.
Staff explained that recent federal regulatory changes narrowed the list of enforceable PFAS chemicals to two (PFOA and PFOS) and established a maximum contaminant level (MCL) of 4 parts per trillion for combined regulated compounds. The city is close to the PFOA MCL and exceeded the PFOS level in at least one well. Staff identified likely local…
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