Southwest Region

Olympic mountains photo
Our Southwest Region (SWRO) includes Clallam, Clark, Cowlitz, Grays Harbor, Jefferson, Lewis, Mason, Pacific, Pierce, Skamania, Thurston, and Wahkiakum counties.

Topics of interest in the Southwest Region

Puget Sound

Puget Sound is critical to our environment, culture, and economy. About two-thirds of the state’s population lives in the Puget Sound region. Our nation’s second largest marine estuary faces a number of challenges related to population growth and development, as well as habitat loss and multiple sources of pollution. Learn more about protecting Puget Sound.

Air quality issues

Do you use a wood stove to heat your home? Check to see if there is an air quality burn ban in your area. We also have information about how to use your wood stove more efficiently and the health affects of breathing smoke.

Cleaner yards, cleaner future: Ridgefield neighborhood enters last stage of soil contamination cleanup

This yard cleanup program is reaching a pivotal cleanup step spring 2026 as it decontaminates the last participating yards in a Ridgefield neighborhood. But the soil there wasn’t always toxic.


If you visited the general area of 111 West Division Street in Ridgefield during the last 10 years, you would have noticed the sounds and sights of cleanup crews and landscapers digging up yards and putting them back together. As strange as that sounds, there’s an important reason why most of the eligible homeowners signed on for this activity to... Continue reading this blog...

Read more blogs