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Natural Resources and Parks
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Vasa Park beach reopens; water quality safe for swimming and boating


Vasa Park beach on Lake Sammamish is again open for swimming and boating after being closed Monday in response to a sewage overflow from King County’s Sunset Pump Station. Laboratory tests conducted over several days confirmed water quality is safe for recreation.


Public Health – Seattle & King County today approved the reopening of Vasa Park beach, which was temporarily closed following a brief sewage overflow from the Sunset Pump Station on Monday afternoon.

King County’s Sunset Pump Station is located at 3730 West Lake Sammamish Parkway in Bellevue.

An electrical failure inside the station shut down pumping equipment, causing about 13,000 gallons of sewage to overflow into nearby Vasa Park and Lake Sammamish. Crews restored power in about an hour and the pump station quickly resumed normal operation.  

King County immediately contacted health and regulatory agencies about the overflow, posted warning signs in the park, and took water quality samples. Laboratory tests over several days confirmed water quality is safe for recreation.

The Sunset Pump Station has been serving the West Lake Sammamish Area for nearly 50 years.

Over the next few years, King County plans to invest $70 million in major capital improvements that include upgrades to the Sunset Pump Station, which will modernize equipment and increase system reliability.

More information about the project is available online.