Who We Are

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. Together we can turn the tide.

Who We Are

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

• Community science programs for local stewardship

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

Who We Are

'Thirty years ago, this river was polluted. Through their work, native fish are returning. 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.