Washington's Industrial Stormwater General Permit, which covers nearly 1,200 facilities, has new requirements to ensure cleaner stormwater is flowing into local waterways. The permit covers industrial ...

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 ...

We also provide educational resources to property owners who want to drill a new well, maintain a well, or close down (decommission) an unused well. Well drillers and property owners have the ...

According to our contingency planning rule, an approved primary response contractor must commit to the following: When reviewing industry oil spill plans, we analyze whether response equipment is in ...

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 ...

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 ...

Ecology, local clean air agencies, and Tribes can restrict indoor and outdoor burning under certain conditions. Air quality burn bans protect people when the air is unhealthy. Fire safety burn bans ...

We currently sample 25 wells annually in the Sumas-Blaine area for nitrate, chloride, and bromide. This long-term study builds on earlier monitoring efforts and is designed to provide a broad-brush ...

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 ...