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Ecology Department Investigating Sewage Failure

The state Department of Ecology is studying the sewage treatment failures at King County’s two largest sewage treatment plants that led to seaside closures throughout Puget Sound and a “no-contact” advisory for the eastern shoreline of Bainbridge Island for three days last week.

Kitsap Public Health District has issued the “no-contact” advisory Friday, July 19, and it ran through the weekend.

Ecology officials said the West Point Wastewater Therapy Plant in Seattle released an estimated 3 million gallons of untreated sewage for approximately 27 minutes early on the morning of July 19.

Backup pumping systems failed throughout power disruptions at the plant, officers mentioned, and the system diverted incoming wastewater to an emergency outfall near North Seaside in Discovery Park.

Earlier, on Thursday, July 18, a different energy failure at King County’s Renton Wastewater Therapy Plant led to a “doubtlessly limited disinfection” of handled wastewater, officers said.

The treatment breakdown lasted approximately 50 minutes. The Renton wastewater plant discharges into Puget Sound, about two miles offshore, northwest of Duwamish Head in Seattle.

Ecology is investigating each incident as unauthorized discharges that would violate the Washington state’s water high-quality permits for the amenities.

The agency anticipates taking necessary enforcement actions after its full investigation, officials stated.

After the second sewage spill last week, Bainbridge residents were suggested to keep away from contact with the water along island’s east shoreline as a result of modeling carried out by King County, and reviewed by the Washington State Department of Health, showed there was potential for sewage to impact the world. Residents in Indianola have been warned, as well.

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