Employees repair valve, stop small overflow near Interurban Pump Station

Sewer utility employees responded quickly to a sewage overflow discovered about 10:30 a.m. near the Interurban Pump Station in Tukwila.

It’s estimated that about 200 gallons of wastewater spilled from a pipe into the Duwamish River near South 143^rd Street. The overflow was apparently caused by a malfunction in a vacuum relief check valve, which has since been repaired.

County staff took water quality samples and notified health and regulatory agencies about the overflow.

The system is again operating normally, and crews will continue to monitor the site over the next several days.

Note to editors and reporters: Visit the WTD Newsroom, a portal to information for the news media about the Wastewater Treatment Division, King County Department of Natural Resources and Parks: http://www.kingcounty.gov/environment/wtd/Newsroom.aspx

This release is also posted on the Web site for the Department of Natural Resources and Parks at http://www.kingcounty.gov/environment/dnrp.aspx

Related information

Wastewater education program

King County Wastewater Treatment