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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 scientists like you. Every contribution matters.

The science is clear: healthy water systems feed us, sustain us, and deserve our protection. We predict risks so nature can recover.

The water that flows through you connects you to 7 billion people — and countless ecosystems. Join the fight.

'Thirty years ago, this river was dying. Because we organized, native fish are returning. I bring my grandchildren to witness it.' — Dr. Robert L.

We believe that nature can heal if we give it the chance. Our growing coalition shows that change happens.