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View project home page for latest project updates. Older project updates are posted on the library page.

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


Contact us

Construction hotline:

Contact Bibiana Ocheke-Ameh at:


 Feedback form

Sign up for email or text updates on the public involvement page.

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 .
Two crew members backfill the trench with gravel after the 60-inch section of EFF pipe has been installed at the conveyance worksite.Crews backfill the trench after the 60-inch section of EFF pipe has been installed. View more photos of the conveyance pipeline .
An aerial image shows completed preparation work of rebar and a piping that prepares the settling tank location for concrete pouring in the ballasted sedimentation building. Preparation work concludes in advance of concrete pouring for the settling tank in the ballasted sedimentation building. View more photos of the treatment station .


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.

Georgetown Wet Weather Treatment Station - making construction sustainable