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Brief wastewater bypass occurs during routine equipment testing at West Point


The King County Wastewater Treatment Division is investigating a brief wastewater bypass at West Point Treatment Plant on Dec. 2.


Normal wastewater treatment operations were swiftly restored early Wednesday morning, Dec. 2, after an operator error during routine testing caused an emergency bypass gate to open slightly for three minutes at the West Point Treatment Plant

The overflow happened shortly after 1 a.m. on Dec. 2, and is estimated at less than 15,000 gallons. The King County Wastewater Treatment Division is investigating the incident this morning. 

Out of an abundance of caution, the beach at West Point in Discovery Park is temporarily closed pending water quality results. King County employees were in the field Wednesday morning to collect water samples and post signs in the vicinity of the outfall pipe. The brief bypass has been reported to health and regulatory agencies. 

King County’s West Point Treatment Plant

Marie Fiore, 206-263-0284 or;

About the King County Wastewater Treatment Division
King County’s Wastewater Treatment Division protects public health and enhances the environment by collecting and treating wastewater while recycling valuable resources for the Puget Sound region. The division provides wastewater treatment services to 17 cities, 17 local sewer districts and more than 1.8 million residents across a 420-square-mile area in King, Snohomish and Pierce counties.