Latest information on the Lower Duwamish

Ecology, EPA, King County, and the City of Seattle work continuously to    control sources of contamination to the Lower Duwamish Waterway (LDW). We post the latest source control information on this page, including reports and updates on work underway. 

Duwamish Cleanup Community Open House

You're invited to a community open house. Learn about the work Ecology and EPA are doing to clean up contamination near the Lower Duwamish waterway. The meeting will be an open house format. You can speak individually with staff from Ecology and EPA who are working on the project.

Tuesday, June 18
5:30-7:30 p.m.
South Seattle College
6737 Corson Ave S

Interpreters will be available. 

Seattle Iron and Metals fined

Seattle Iron and Metals, a company that recovers metal from cars and other machinery, has been discharging excessive levels of zinc, copper, lead, and other pollutants into the Duwamish waterway over the past two years. In February, Ecology fined them $98,000.

Industrial Stormwater General Permit reissuance process began with public listening sessions

The current Industrial Stormwater General Permit expires on Dec. 31, 2019. We are beginning the reissuance process with a series of public listening sessions to discuss potential changes to the permit. These meetings are a chance for you to learn more about the proposed changes to the permit and to ask Ecology staff any questions about permit coverage. Our proposed changes to the permit include:

  • Adding two new industry groups that require coverage
  • Adding language to protect groundwater
  • Changing the timing of First Flush
  • Revising requirements for Consistent Attainment

You can download a webinar version of a listening session.


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