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Our work begins where rivers meet the sky and ends where groundwater feeds the soil. We use science to protect it all.
This work is possible because of volunteers like you. Every contribution matters.
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Pollution doesn't stop at your neighbor's fence — and our solutions don't either. We work across industries to hold polluters accountable.
- Legal advocacy driving enforcement
The water that flows through you connects you to 7 billion people — and billions more organisms. Stand with us.
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'I used to think my voice didn't matter. Then I joined a citizen monitoring program and realized — my voice prevents crisis. Now I'm leading others.' — Jennifer M., Volunteer
We believe that nature can heal if we remove barriers. Our 20-year track record shows that change happens.