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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:

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

March 27, 2020

Sewer work coming to your neighborhood

King County crews will be repairing a broken sewer pipe near your home.

The repair work will close the intersection of M Street NE and 2nd Street NE for up to one month. There will be detours for both drivers and pedestrians, noise and construction activity. Pedestrians will not be allowed within the construction area during pipe and street repairs.

This work could begin as early as April 2020. We will share more information about what to expect before work starts.

View project update .

Project description

To protect public health and the environment, the King County Wastewater Treatment Division will be repairing a section of pipe at the intersection of M Street NE and 2nd Street NE in Auburn. This pipe, called the M Street Trunk, was built around the 1950s and a section has been corroded by the hydrogen sulfide produced from wastewater. 

Wastewater from south King County is collected by local cities and sewer districts and flows to the county’s South Treatment Plant in Renton.

What to expect

Construction to repair the pipe will require an open cut in the road that will temporarily close the intersection of M Street NE and 2nd Street NE. Sewage diversion pipes temporarily installed above ground will allow flows to bypass the section of pipe being repaired and reenter the sewer system at a maintenance hole on 2nd Street NE between M Street and N Street.

These diversion pipes will temporarily impact access to some driveways, streets and sidewalks, and may temporarily impact water usage of certain homes. If your home’s water usage will be impacted by construction, we will notify you in advance and work with you to minimize the disruption and keep you informed.

King County crews will work to maintain local access during active construction.

How to stay updated

This project page will be updated with information on dates, closures and detours before work begins. We will provide advanced notification to residents and businesses in the immediate area. For the latest information, check this project webpage for updates. For additional information, contact Eunice Lee at


Contact us

Contact Eunice Lee community services lead at:

Project location

locator map - M Street NE and 2nd Street NE in AuburnM Street NE and 2nd Street NE, Auburn

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