Impact

Our work begins where rivers meet the sky and ends where groundwater feeds the soil. We use advocacy to protect it all.

This work is possible because of scientists like you. Every contribution matters.

Impact

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

• Early warning systems of water quality shifts

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

Impact

'Thirty years ago, this river was polluted. Through their work, native fish are returning. I bring my grandchildren to witness it.' — Dr. Robert L.

We believe that nature can heal if we restore what was lost. Our decade of victories shows that grassroots action works.