Northwest Region

Ecology has four regional offices. The Northwest region includes Island, King, Kitsap, San Juan, Skagit, Snohomish and Whatcom counties.
Ecology has four regional offices. The Northwest region includes Island, King, Kitsap, San Juan, Skagit, Snohomish and Whatcom counties.

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131 results.

Cleaning up: Studies of Treoil site now available for comment

We’ve completed our studies of the remaining contamination at the Treoil Industries site and the options for cleaning it up, and we invite your comments.

Nooksack adjudication update

30,000 water users in the Nooksack area should soon receive the adjudication  claim forms via certified mail.

Fighting fires – and air pollution

Grants from Ecology helped fund Washington's first electric fire truck, which was recently unveiled by the City of Redmond. 

Ecology issues final water quality permit for Everett’s Water Pollution Control Facility

We've issued the final water quality permit for Everett's Water Pollution Control Facility, which will go in effect on Jan. 1, 2025.

Cleaning up: Fieldwork starting in the Duwamish Waterway Park

Fieldwork to answer questions about the type and extent of contamination at Seattle's Duwamish Waterway Park slated for November

Cleaning up: Join the conversation on the Boeing Isaacson Thompson cleanup site

The Boeing Isaacson Thompson site is undergoing significant remediation as part of the broader Lower Duwamish Waterway cleanup initiative. 

Two Seattle sites to be cleaned up for affordable housing

We invite you to comment on cleanup site documents and attend two open houses for the Morningside Acres and L Auto Repair cleanup sites in Seattle, which will be developed into affordable housing, 

New grant program aims to restore, protect Puget Sound riparian areas

We are launching new grant program to make Puget Sound riparian areas more resilient to climate change.

Cleaning up remaining contamination at the Unocal Edmonds site

Comment on the study outlining cleanup options for the remaining contamination at the Unocal Edmonds cleanup site

Investigating the French Creek orange water mystery

For the past few summers, neighbors along French Creek in Snohomish County have been noticing an unusual orange hue in the stream. Here’s what we found in our investigation.