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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.

We believe that nature can heal if we give it the chance. Our decade of victories shows what's possible.

The water that flows through you connects you to 7 billion people — and billions more organisms. Protect it with us.

'Thirty years ago, this river was polluted. Through their work, native fish are returning. I watch the difference daily.' — Commissioner James

The science is clear: healthy water systems feed us, sustain us, and deserve our protection. We monitor trends so policy can shift.