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Board hears PFAS briefing; two Group-A water systems showed detections below state action levels
Summary
A county briefing on PFAS explained exposure pathways, health concerns and mitigation options; presenters said two Group-A water systems in the county had PFAS detections below state action thresholds and urged measured public education and planning for testing and remediation.
The Kittitas County Board of Health received an informational briefing on PFAS — per- and polyfluoroalkyl substances — covering sources, health concerns, local test results and possible mitigation.
A presenter summarized PFAS as a class of persistent, synthetic chemicals found in products and firefighting foam and described exposure pathways including drinking water and food. The presenter said county testing of the county's 91 Group-A water systems shows PFAS detected in two systems but "they're below the state action levels," and emphasized that health impacts typically appear only after prolonged, concentrated exposure.
Board members discussed testing logistics and public messaging. The presenter noted that PFAS testing is expensive, requires certified labs and that the state implemented Group-A annual testing requirements in 2021; wastewater and landfill leachate were identified as possible long-term sources. For mitigation, officials discussed end-point treatment such as industrial activated-carbon or reverse-osmosis systems but warned those solutions are costly for broad, rural distribution systems.
Why it matters: PFAS is persistent in the environment; even low-level detections can accumulate over time. County staff said they are monitoring neighboring jurisdictions' responses and will consider targeted testing and grant-funded remediation if detections rise above action levels.
What's next: Staff will refine public education materials, continue to monitor state reporting and consult grant opportunities for potential mitigation work; the board asked staff not to raise undue public alarm without clear evidence of local risk.
