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Duwamish waterway programs
King County’s Wastewater Treatment Division and its predecessor Metro have worked for more than 40 years to restore the Lower Duwamish Waterway.
King County has been working to clean up the Lower Duwamish for decades. But our efforts to remove historic contamination are only the start.
Lower Duwamish Waterway Superfund Cleanup
The Lower Duwamish Superfund cleanup will enhance the health of the Lower Duwamish Waterway for tribes and community members, support a more thriving economy, and provide a healthier habitat for fish and wildlife.
East Waterway Cleanup
East Waterway is part of the Harbor Island Superfund Site and is regulated by the U.S. Environmental Protection Agency (EPA).
King County's efforts to keep pollution out of the water
Keeping pollution out of the Lower Duwamish has been a regional priority since the 1950s.
King County in the Duwamish Watershed – more than cleanup
The King County government is a major property owner and a service provider in the Lower Duwamish area. We manage transit service, wastewater facilities, trails, health services, roads and bridges, and even an international airport. Our agencies are dedicated to enhancing the quality of life and protecting public health and the environment. We are proud to be both part of the community and a representative to the people who live and work there.
How you can help the Duwamish
Cleanups and wastewater controls alone are not enough to protect the Duwamish in the future – we all have a responsibility to do our part to prevent harmful chemicals from getting into our waterways.