North Mercer Island/Enatai sewer upgrade
April 10, 2018
Field investigations continue in Mercer Island and Bellevue starting April 12
King County Wastewater Treatment Division is continuing field investigations to inform design of a sewer upgrade project in Mercer Island and Bellevue. Potholing, pipe inspection, soil sampling and survey work will begin at various locations in the project area starting April 12. See the latest project updates for what to expect on Mercer Island and Bellevue during this work.
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.
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.
View larger version. July 2017
Project design will begin in 2016. Construction is expected to begin in 2019 and extend until 2022.