Water quality

Ecology is responsible for keeping Washington waters clean and helping polluted waters recover.
Ecology is responsible for keeping Washington waters clean and helping polluted waters recover.

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Reflecting on World Water Day and protecting Washington’s freshwater resources

Celebrating World Water Day and reflecting on Ecology's role in protecting state freshwater resources

Seeking environmental technicians

We are seeking eight natural resource scientists to conduct river and stream surveys this summer. Learn more about our watershed health monitoring group and how you can join our team.

$386 million in clean water projects planned for Washington

We're proposing to award $386 million in grants and loans for 134 high-priority clean water projects across the state.

New opportunities to improve Washington’s water cleanup program

Update about a settlement that Ecology and EPA are in to review and improve the TMDL program. 

Clean water funding supports upgrades at Pasco facility

Ecology is supporting The City of Pasco’s Process Water Reuse Facility, with our clean water grants and loans program to help upgrade and expand the facility.

Camano Island community takes the lead on septic solutions

The Maple Grove Community on Camano Island worked with Ecology and Craft3 to create a solution for their septic issues by the community, for the community. 

Stormwater research collaboration leads to cleaner water for all

Ecology has municipal stormwater permits for the state’s populated cities & counties. The permits are aimed at reducing stormwater pollution, so that cleaner stormwater is entering local waterways.

Everett wastewater treatment plant’s water quality permit up for review

We’re inviting the public to comment on the draft water quality permit for the Everett wastewater treatment plant.

Native plants take root along Hangman Creek

Hangman Creek sees largest riparian restoration effort in Spokane County’s history.

Permit updates focus on cleaner stormwater for growing communities

Review Ecology's proposed changes to the municipal stormwater permits for the state's most populated cities and counties.