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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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.

Expanding air monitoring for the 2024 wildfire season

Ecology is expanding air monitoring across the state in response to wildfire smoke. 

Big investments boost Washington's coastal resiliency

New $73.6 million federal grant helps tackle coastal climate-related threats.

Cleaning up: Sampling and dredging in I & J Waterway begins this summer

Dredging and sampling work begin this month in Bellingham's I & J Waterway