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Construction status

North Mercer Island/Enatai sewer upgrade

View current construction activity on project home page.

Revised May 5, 2023

Construction status along the alignment of the North Mercer/Enatai sewer upgrade project.

Construction photos

An excavator is fitted with a hook attachment with cables attached to a huge yellow box. Two crew members are standing beside the large yellow box.During open cut construction, construction crews use steel boxes called trench boxes to strengthen excavation walls while they install pipe deep underground. View more construction photos .

phases_graphic_construction

Contact us

Contact the community services leads at:
Emily Berry, 206-848-0698
Annie Pfeifer, 206-263-3203
NMEsewer@kingcounty.gov

24-hour construction hotline:
425-305-3578

Wastewater Treatment Division

King Street Center
201 S. Jackson St., KSC-NR-5500
Seattle, WA 98104

Get directions

Contact us

206-477-5371

WTD Division Directory

website.wtd@kingcounty.gov