Submit an observation form to report any violation of the state plastic bag ban you have observed. Plastic bags are a major contaminant in Washington’s recycling facilities, waterways, roadways, and ...

We're working to reduce polluted runoff from streets, forests, and farms. When it rains, water flows across the land, streets, and sidewalks. Pollutants are carried by this water into local streams, ...

This information was modified from Chapter 2 of At Home with Wetlands: A Landowner's Guide. Wetlands perform many ecological functions. Knowledge and understanding about the complexities wetland ...

When establishing cleanup levels for your contaminated site, use these guidance documents in combination with the CLARC data tables. CLARC — Cleanup Levels and Risk Calculation — is a compendium of ...

Forestry practices create sediment runoff and warmer water temperatures. We work with other agencies to enforce rules that prevent this type of runoff. We help ensure that the Forest Practices Rules ...

Agricultural runoff can pollute lakes, rivers, and marine beaches. It can also contaminate groundwater. Landowners can prevent runoff by using best practices that keep soil and other pollution out of ...