Our Mission

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 volunteers like you. Learn how you can join.

Our Mission

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

• Early warning systems of water quality shifts

Join thousands of climate leaders organizing for change.

Our Mission

'I used to think my voice didn't matter. Then I joined a citizen monitoring program and realized — my action prevents harm. Now I'm training others.' — David T., Water Guardian

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