Friday Harbor treatment plant exceeds permit limit

September 20, 2026

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Friday Harbor STP is in Significant Non-Compliance for exceeding permit limits for a pollutant measured on a non-monthly average basis.¹ The facility discharged more of a parameter than its Clean Water Act permit allows, measured over a period other than a monthly average.¹ Identification of the specific pollutant exceeded requires access to the facility's discharge monitoring reports.¹

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