Join us virtually on March 17, 2025, to learn more about our agency’s efforts in developing a strategy to achieve healthy ...

The Yakima River Basin Water Enhancement Project Workgroup, a stakeholder group co-chaired by us and the U.S. Bureau of Reclamation, provides policy and project development advice on implementing the ...

Our aquatic plant specialist explains the differences between invasive and native milfoils, why native milfoils are important ...

We track ozone pollution in current air quality conditions (map). We monitor ozone at 13 locations to make sure levels are in the healthy range. Currently, all areas of Washington meet the national ...

a. List the utilities currently available at the site: Electricity, natural gas, water, refuse service, telephone, sanitary sewer, septic system, other: Applicants should include utilities that are ...

During the 45 years of plutonium production at Hanford, waste water was being dumped or injected into the ground. We oversee the monitoring and cleanup of contaminated water under the Hanford site.

We estimate there are thousands of abandoned wells in Washington. If you find an abandoned well on your property, you are required to work with a licensed well driller to properly close it up, a ...

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 ...

A signature verifies that someone, usually the project proponent, is responsible for the completeness and accuracy of the information in the checklist. A signer can be one of the following: Private ...

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 ...

The Public Trust Doctrine is a legal principle derived from English common law. The Public Trust Doctrine protects public ownership interests in certain uses of navigable waters and underlying lands.

Waters of the state belong to the public and can't be owned by any individual or group. Instead, a person or group may be granted a right to use a volume of water, for a defined purpose, in a specific ...