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 donations like you. Your voice is essential.

Our Mission

Pollution doesn't stop at your neighbor's fence — and our solutions don't either. We work across industries to solve problems at their source.

• Community science programs for local stewardship

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

Our Mission

'Thirty years ago, this river was forgotten. Through their work, native fish are returning. I bring my grandchildren to witness it.' — Commissioner James

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