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Bellevue and Mercer Island public meetings to shed light on proposed sewer line update


King County’s Wastewater Treatment Division will host two public meetings in March to share information about a proposal to update aging sewer infrastructure serving Bellevue and Mercer Island since the 1970s.


People seeking information about King County’s North Mercer Island/Enatai Sewer Project are invited to public meetings on March 2 and March 10.

King County employees will share proposed plans to update aging sewer infrastructure serving Bellevue and Mercer Island since the 1970s, and people will be able to ask questions and share input.

Wednesday, March 2
6-8:30 p.m.
Mercer Slough Environmental Education Center
1625 118th Ave. S.E. in Bellevue

Wednesday, March 10
6-8:30 p.m.
Mercer Island Community Center
8236 S.E. 24th Street, Mercer Island

The North Mercer Island/Enatai Sewer Project is needed to protect public health and the environment, and to ensure community members continue to benefit from reliable wastewater service.  

After extensive analysis that considered community needs and priorities, King County identified an alternative for the project will involve placing about 14,000 feet of underground sewer pipeline along an alignment from King County’s North Mercer Pump Station, located at 7631 S.E. 22nd Ave. on Mercer Island, to the Sweyolocken Pump Station, located at 3100 Bellevue Way S.E., in south Bellevue.

This alternative was selected as the best approach for limiting community and environmental impacts as well as reducing potential for project costs and risks.

Project design is scheduled to begin in 2016 and construction is expected to begin in 2019 with completion scheduled in 2022.

Additional information about the project is available online. For questions about the meetings, or to arrange reasonable accommodations for people with disabilities, please contact Monica van der Vieren at 206-477-5502 or 711 TTY.