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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 community members like you. Learn how you can join.

Get Involved

We believe that nature can heal if we remove barriers. Our growing coalition shows that change happens.

• Water access programs for Indigenous communities

Join thousands of water guardians organizing for change.

Get Involved

'I used to think my voice didn't matter. Then I joined a citizen monitoring program and realized — my voice prevents harm. Now I'm inspiring others.' — Jennifer M., Volunteer

Pollution doesn't stop at your neighbor's fence — and our solutions don't either. We work across political boundaries to hold polluters accountable.