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Project update

August 16, 2019

Look for our project booth at Enatai Beach Park on Saturday, August 24!

We’ll be located near the REI Boathouse under the “Go with the Flow” banner logo on our tent. Members from our community relations team will be sharing project updates and answering questions about the North Mercer/Enatai sewer upgrade project. See you there!


Enatai Beach Park
3519 108th Ave. S.E.
Bellevue, WA 98004

Time: 12 p.m.-3 p.m.

Visit the City of Bellevue Parks website to learn more about Enatai Beach Park summer programs.


What to expect:

 - Receive project materials

 - Learn more about construction impacts at Enatai Beach Park and along the project alignment

 - Ask questions and sign up for project email updates

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.


Contact us

Contact Kristine Cramer, community services lead at:


 Feedback form

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.

Project area mapView larger version . December 2018


Project design began in 2016 and will be complete in early 2020. Construction is expected to begin in 2020 and extend until 2024.

project timeline View larger version .

Project location


Back to the capital projects overview map .

Related information

Regional Wastewater Services Plan

Local municipalities: