Impact

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 scientists like you. Every contribution matters.

Impact

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

• Corporate accountability driving enforcement

Join thousands of climate leaders fighting for change.

Impact

'I used to think my voice didn't matter. Then I joined a citizen monitoring program and realized — my voice prevents crisis. Now I'm inspiring others.' — Jennifer M., Watershed Advocate

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