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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Diving into the data on Washington’s water quality

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

Pilot project takes root with landowners along Hangman Creek

Ecology's innovative pilot program with Spokane Conservation District is transforming hundreds of acres along Hangman Creek. 

Restoration in action: more trees on the way for Flaming Geyser State Park

Highlighting riparian restoration work at Flaming Geyser State Park.

Keeping your septic system on point

SepticSmart Week is an annual event that serves as a great reminder to do a check up on your on-site sewage system if you have one. 

Investigating the French Creek orange water mystery

For the past few summers, neighbors along French Creek in Snohomish County have been noticing an unusual orange hue in the stream. Here’s what we found in our investigation.

Proposed Port Angeles pilot project seeks to test technology to pull harmful carbon dioxide out of the air 

A pilot project proposed in Port Angeles is designed to test a new approach to removing carbon pollution.

High-quality insects

You can tell a lot about a stream by looking at its bugs. When you see a variety of them living in the muck of a streambed, that’s a strong indicator that a stream is healthy.

Award-winning Eastern Washington program supports farms and clean water

Ecology-funded program that supports farmers and clean water earns national award  

Updated stormwater permits support green infrastructure, clean water

The state’s most populated cities and counties now have updated municipal stormwater permits in place.

Changing weather, changing water – it's time to look out for harmful algal blooms

It’s time to watch for harmful algal blooms! The only way to know for sure if toxins are present is through laboratory testing. Read on to learn more.