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 ...

Discharge standards can vary, but most of Washington's wastewater treatment plants (WWTPs) must meet technology-based effluent limits. See full standards and alternative discharge limit details in ...

Our Nuclear Waste Program also oversees several other facilities in Washington that aren't part of the Hanford cleanup. Click on the tabs to find out more about the facilities, and read about the US ...

Everyone deserves clean air to breathe and a sustainable future that responds to challenges presented by climate change. To reach these goals, we regulate harmful emissions from vehicles, burning, and ...

Our team of engineers, chemists, toxicologists, and environmental specialists provide non-enforcement pollution prevention (P2) technical assistance to businesses like yours. We provide services ...

Planning to visit one of our offices? If you would like to meet with a staff member in person, please call ahead to confirm that they will be available. Our office hours are Monday to Friday, 8 a.m. – ...

We, along with local clean air agencies, monitor the air to make sure carbon monoxide is within healthy standards. Today, all areas of Washington meet the carbon monoxide air quality standard. Past ...

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 conduct projects that use Geographic Information System (GIS) produced maps as aids in accomplishing our mission. We build and maintain GIS maps to help our staff and the public understand the ...

Looking for a service provider? Here is a excel spreadsheet that lists certified UST service providers.This list is updated quarterly. Disclaimer: We do not assume any liability for the accuracy or ...

We work to safely manage solid, hazardous, and nuclear waste and reduce toxic chemicals in the products you use. We regulate the threats found in everyday household products and help businesses ...

Every five years, the Washington Coastal Zone Management Program conducts a self-assessment of our program to determine gaps and improvement opportunities within nine enhancement areas, and to assess ...