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Project updates

See construction page for summary of work to date on the project.

The Kent-Auburn Conveyance System Improvements Project is nearly complete! King County Wastewater Treatment Division successfully installed a new sewer line through Auburn, Algona, and Pacific.

Work began in 2017 and now the sewer line is operating and providing reliable service and increased capacity to our region. Crews are now wrapping up restoration, planting and inspection efforts at different locations. All restoration work is expected to be completed this summer.

We greatly appreciate the patience and support of the community during this project. Thank you!

You can contact the project team with questions or concerns at 206-263-9453.

Sign up for project updates to stay informed about construction activities.

See the project library page for a list of all notices and other project materials.

Project description

Since 2008, King County Wastewater Treatment Division has been working to improve the wastewater system in southeast King County. In 2014, the County completed two new pipelines in Kent and Auburn (See Phase A info here).

The second phase of the project involved building 14,000 feet of new sewer line in Pacific, Algona, and Auburn, and making upgrades to the Pacific Pump Station.

Why is King County making these improvements?

  • To protect public health and the environment
  • To continue to provide safe, reliable sewer service as the area grows
  • To provide enough capacity to transport wastewater through 2060 in the project area

Project area

Project schedule

  • Spring 2017: construction begins
  • Fall 2018: pipe installation complete
  • Summer 2019: Pacific Pump Station work complete
  • Summer 2019: all restoration work complete
  • To see when work is expected to take place in your area and how long work will last, review our construction map.
  • Sign up for updates and we’ll keep you informed about the project schedule and activities!


Contact us

Call or email David Freed, community services lead:

Stay informed

Sign up for project email or text updates (or manage your subscriptions).

Project location


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