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

• Real-time data networks 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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'I used to think my voice didn't matter. Then I joined a citizen monitoring program and realized — my data prevents harm. Now I'm leading others.' — David T., Water Guardian

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