City Issues Notice of Drinking Water MCL Violation

At the January City Council meeting, it was reported that letters were sent regarding the recent notice of a Standard Maximum Contaminant level (MCL) violation. The violation occurred this past quarter on 11 December 2025. Chinook City residents who are drinking Chinook City-treated water should have received a notice dated 12 January 2026. If you know of anyone outside the Chinook water treatment plant coverage area who is drinking this water, please make them aware (individuals may be receiving water by bulk delivery). The notice stated the city violated drinking water standards due to a dis...