Our Mission

Our work begins where rivers meet the sky and ends where groundwater feeds the soil. We use community power 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 hold polluters accountable.

• Community science programs for grassroots knowledge

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

Our Mission

'I used to think my voice didn't matter. Then I joined a citizen monitoring program and realized — my data prevents contamination. Now I'm training others.' — Sarah K., Community Monitor

We believe that nature can heal if we give it the chance. Our decade of victories shows that grassroots action works.