Above, left to right: Ifeanyi Isigwe, Ecology toxics reduction engineer, works with Systems Interface’s Steven Hill, project engineer, and Matt Baker, strategy manager, to review, evaluate, and assess ...

We aim to provide timely information about contaminated site cleanups and opportunities for you to participate in that process. On this page you can find our: Contaminated Site Register — Sign up to ...

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 ...

Casey Sixkiller was appointed by Governor Bob Ferguson as the 14th Director of the Washington State Department of Ecology. With more than two decades of experience in federal, Tribal, regional, and ...

We invest funds from the Volkswagen settlement and our Clean Diesel program in projects that reduce emissions from transportation. These investments help improve air quality and people's health. They ...

Proficiency testing sample providers must comply with the most current proficiency standards to be recognized by our laboratory accreditation program. Six providers of Proficiency Testing (PT) samples ...

Washington's recycled content law (Chapter 70A.245 RCW) sets minimum post-consumer recycled content (PCRC) standards for specific products. This page explains which products are subject to the law and ...

Discharges of excess nutrients — particularly nitrogen — to the Puget Sound from public domestic wastewater treatment plants (WWTPs) are contributing to low oxygen levels in the Puget Sound and the ...

Stormwater is rain and snow melt that runs off surfaces such as rooftops, paved streets, highways, and parking lots. As water runs off these surfaces, it can pick up pollutants that contaminate local ...

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 ...

Local governments are required to develop comprehensive solid waste management plans. These plans serve as a guiding document for local governments' solid waste programs, including detailing all ...

Small wastewater treatment plant laboratories are a special group of labs we accredit. Standard spreadsheets and templates can help provide quality control for data collection. They also help with ...