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Our work begins where rivers meet the sky and ends where groundwater feeds the soil. We use partnerships to protect it all.

This work is possible because of donations like you. Learn how you can join.

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We believe that nature can heal if we remove barriers. Our decade of victories shows what's possible.

• Early warning systems of water quality shifts

Join thousands of climate leaders fighting against pollution.

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

Pollution doesn't stop at your neighbor's fence — and our solutions don't either. We work across political boundaries to solve problems at their source.