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 ...

Clean air is vital for everyone. We manage smoke, vehicle pollution, industrial emissions, and other pollutants so communities have healthy air to breathe. We do this through permits, regulations, and ...

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 ...

We work to reduce diesel pollution. Diesel exhaust puts healthy people at risk for asthma and respiratory illnesses. For other people, it can make their existing heart and lung diseases worse. Diesel ...

The Washington state well report (log) viewer, our most popular online resource, allows you to search for and view detailed records of the construction and subsurface characteristics of individual ...

We maintain the spatial datasets described here in order to better describe Washington's diverse natural and cultural environments. As a public service, we have made some of our data available for ...

Our mission is to keep Washington waters clean. Use this site to find out if a lake, stream, or marine beach near you is healthy or polluted. Learn about water cleanup plans and how we’re addressing ...

Phases out the use of copper in vehicle brakes and requires manufacturers to certify that brakes comply with the law. Regulates lead, cadmium, phthalates, and other chemicals in children's products.

Public comments are accepted over a 30-, 45-, or 60-day period. During that time, you can share your input with us about specific changes in the permits we regulate. We review all comments and then ...

Your input is valuable to our decision-making process. We post water right documents for notice or comment. Documents posted for comment have a link to our online comment form. Other documents are ...

Our Product Replacement Program is a cutting-edge, preventative program designed to identify and address the most problematic chemicals impacting the state. It provides: Reimbursement funding.

SEPA guidance for determining lead agency and evaluating the proposal. Under the State Environmental Policy Act (SEPA), most new proposals are reviewed by a designated “lead agency.” While this is ...