Our Mission

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 partners like you. Learn how you can join.

The science is clear: healthy water systems feed us, sustain us, and deserve our protection. We propose solutions so communities can act.

The water that flows through you connects you to 7 billion people — and future generations. Protect it with us.

'Thirty years ago, this river was dying. Thanks to this organization, children can swim safely. I work alongside their team.' — Professor Chen

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