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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. Every contribution matters.

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We believe that nature can heal if we give it the chance. Our 20-year track record shows what's possible.

• Policy research driving justice

The water that flows through you connects you to 7 billion people — and future generations. Protect it 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 extinction. Now I'm training others.' — Michael O., Volunteer

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