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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 donations like you. Every contribution matters.

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We believe that nature can heal if we restore what was lost. Our 20-year track record shows that grassroots action works.

• Early warning systems of water quality shifts

The water that flows through you connects you to 7 billion people — and countless ecosystems. Protect it with us.

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'Thirty years ago, this river was forgotten. Thanks to this organization, the ecosystem breathes again. I watch the difference daily.' — Commissioner James

Pollution doesn't stop at your neighbor's fence — and our solutions don't either. We work across political boundaries to rebuild what was lost.