Lake Hills and NW Lake Sammamish sewer upgrade
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: https://www.kingcounty.gov/depts/dnrp/wtd/response.aspx
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.
September 18, 2020
Construction delayed until at least 2022
Construction for the Lake Hills/NW Lake Sammamish Sewer Upgrade Project is no longer expected to begin in 2021.
To complete the sewer upgrade, King County must get permits from the City of Redmond, City of Bellevue, and several state and federal agencies. It is important to take the time to get all necessary permits to install the new pipe in the safest way possible, limit impacts, and maximize improvements for people and the environment. While the project’s design continues, we are experiencing slowdowns in acquiring all the permits that are necessary to complete this work.
Construction will not begin until 2022 at the earliest. We expect to have a better estimate of when we will start construction by spring 2021. Thank you for your continued patience.
No in-person events
Due to COVID-19, King County's Wastewater Treatment Division (WTD) is not currently hosting in-person meetings or events. However, we are committed to sharing information in alternative ways. For example, be sure to check out our project signage next time you are out on the Sammamish River Trail.
Our staff remain available to answer questions via email and phone. We can also:
- Join your virtual meeting
- Provide virtual briefings for community groups
- Send you information in the mail about this project
Let us know how we can best communicate with you and your community by contacting Kristine Cramer at 206-477-5415 or firstname.lastname@example.org.
- Project Summer newsletter , August 2020
- Sammamish River Trail preliminary detour routes and restoration , April 2019
- Project Overview fact sheet (updated December 2018)
- Glossary of terms: King County Wastewater 101
- Meeting calendar for locations and meeting materials
- Project library for updates, fact sheets and environmental documents
- To sign up for project text alerts, text KING REDMONDSEWER to 468-311
The Lake Hills and NW Lake Sammamish sewer pipe has been serving Redmond and Bellevue for 50 years. The water you use travels down your drain to City sewer systems. The City’s pipes send wastewater to King County’s sewer system where it is carried to the Brightwater Treatment Facility in Woodinville for treatment.
King County is working on a project to upgrade 4.5 miles of this sewer pipe. King County will build the new pipe in trails, roads and parks in Redmond. This project is necessary to meet the needs of your growing community. Construction is expected to begin in 2022 and may impact your daily routine. When complete, the new pipe will provide sewer service for 50 years or more.