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Most King County offices will be closed on Monday, May 29, 2017, for Memorial Day.  
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Project update

May 25, 2017

King County will host a community event on Saturday, June 10 to celebrate the completion of the Murray CSO Control Project and to thank you for your continued patience during construction. King County speakers will address the community during a short program 10:30 a.m.

Community celebration & facility tours
Saturday, June 10
10 a.m. to noon
Murray Wet Weather Facility, 7018 Beach Dr. SW

Stop by the celebration to:

  • Take a tour. We'll have guided tours of the site every half hour, including the control room inside the facility building (tours inside the building are limited to those ages nine and up)
  • Learn about how the facility and underground storage tank protect water quality and public health
  • Share your feedback about the project and construction process

Guided tours will begin at 10 a.m., 11a.m. and 11:30 a.m. Reserve your spot for a tour here:

For additional information, see the latest project update .

Construction hotline update: The construction hotline for the project is no longer in service now that construction is complete. For operations concerns, please contact West Point Treatment Plant’s 24-hour phone line at 206-263-3801.

The public staircase is now complete!The public staircase is now complete!

operations phase

Contact us

Contact Kelly Foley at:


For operations concerns, please contact West Point Treatment Plant’s 24-hour phone line at:

1702_landscaping_600Murray CSO Control Facility , February 2017

Project description

King County built a million-gallon underground storage tank across the street from Seattle’s Lowman Beach Park to reduce combined sewer overflows (CSOs). The tank stores excess stormwater and wastewater that would otherwise overflow into Puget Sound when the Murray Pump Station exceeds maximum capacity. Learn more about this project

Project schedule

The Murray Wet Weather Facility began operating in November 2016. Project restoration was completed in spring 2017.

Project location


Back to the capital projects overview map .

Related information

Protecting Our Waters (Combined Sewer Overflow Control Program), King County

Find out if a CSO is occurring at Murray. King County maintains a real-time notification page so people can see whether CSO discharges are occurring.

This project is funded in part by:

Department of Ecology, State of Washington