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Groundbreaking on the Georgetown Wet Weather Treatment Station

King County’s contractor, Titan Earthwork, completed site preparation and demolition activities to prepare the treatment station site for construction. Major construction started in March 2018 with a groundbreaking ceremony.


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Construction hotline:

Contact Bibiana Ocheke-Ameh at:


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Construction photos

A wooden platform is shown underneath the First Avenue South Bridge. A crane sits on top of the wooden platform. Crews built a “trestle,” or temporary work platform, to extend work into the Duwamish River and hold equipment, such as a crane. View more photos of the outfall structure .
A steel box is shown underground with crew members inside, digging and installing a pipe. An excavator works from above ground to remove soil. Crews excavated soil to begin installing 60-inch pipe that will connect the treatment station to the new outfall structure. View more photos of the conveyance pipeline .
A picture showing the project site and the Influent Pump Station area. Trucks surround the excavated area to pour concrete. A steel platform sits above the excavated area. Crews installed a concrete slab at the bottom of the underground Influent Pump Station in December 2018. Trucks carried in cement to pour and a platform was built to assist activities. View more photos of the treatment station .

What to expect during construction

  • Project team available to brief and update community groups, business owners, and residents about construction activities and next steps for construction
  • Active 24/7 information line: 206-205-9286
  • Advance notification of construction activities
  • Email updates about construction activities and community outreach
  • Security fencing and erosion and sediment control around the project sites
  • Large trucks and equipment moving in and out of the project areas
  • Possible work on or near roadways, including on Fourth Avenue South, South Michigan Street, South River Street, and First Avenue South
  • There may be traffic impacts as pipes are installed
  • Increased noise, typical of a construction site

View the video below to learn about the project and our sustainable practices during construction.