The Water Quality Assessment has millions of data points on rivers, streams, lakes, and marine waters across Washington state.

We invite your comments on the draft 2022 Water Quality Assessment. The deadline for public comments is Friday, Jan. 10, 2025. The Assessment evaluates available water quality and sediment data ...

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 ...

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 ...

Ecology has consolidated grant related documentation, guidance, and technical resources that will support prospective applicants and those interested in learning more about the grant program. The ...