North Mercer Island/Enatai sewer upgrade
Wastewater Treatment Division (WTD) operations and projects
WTD operations staff remain on the job 24/7 to ensure the region’s wastewater treatment service continues. More information on how to report a problem you believe may be related to the County’s wastewater treatment system is available here: https://www.kingcounty.gov/depts/dnrp/wtd/response.aspx
The King County Wastewater Treatment Division remains committed to sharing information and gathering feedback from community members about its work and projects. WTD staff remain available to answer questions via email and phone during regular business hours. Project information lines remain available and are being monitored for ongoing construction projects.
Project update
December 10, 2020
In preparation for the start of major construction next year, King County is working with Puget Sound Energy to relocate gas lines away from the future sewer line. Work will occur in three areas across Mercer Island: 90th PL SE, 78th Ave SE, and SE 35th PL. Work is currently underway on 90th PL SE and will begin on 78th Ave SE in late December. SE 35th PL will see gas line work in late January. Read more about work on 90th PL SE and 78th Ave SE .
If you are interested in a project update for your community group or neighborhood, please contact Kristine Cramer at 206-477-5415 or Kristine.cramer@kingcounty.gov.
Project description
With over 400 miles of pipes moving wastewater to one of our award-winning treatment plants, King County WTD works hard to maintain our system. We inspect and monitor our regional system and update plans for needed upgrades.
King County WTD needs to replace sewer pipes that serve areas in North Mercer Island, the southwest portion of Bellevue near Enatai Beach, and the Town of Beaux Arts Village. This pipeline carries wastewater from the North Mercer Island Pump Station to the Sweyolocken Pump Station in Bellevue.
Schedule
Project design began in 2016 and will be complete in 2021. Construction is expected to begin in 2021 and extend until 2025.
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Contact us
Contact Kristine Cramer, community services lead at:
kristine.cramer
@kingcounty.gov
206-477-5415
Or Bibiana Ocheke-Ameh at
bibiana.ocheke-ameh
@kingcounty.gov
206-477-5604
Feedback form
Sign up for email or text updates
To sign up for text alerts, text KING MERCERSEWER to 468-311 for Mercer Island, and KING ENATAISEWER to 468-311 for Enatai. To sign up for email updates, please visit the public involvement page.
Project location
Back to the capital projects overview map .
Related information
Regional Wastewater Services Plan
Local municipalities: