Impact

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 community members like you. Learn how you can join.

Impact

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

• Community science programs for grassroots knowledge

Join thousands of water guardians organizing for justice.

Impact

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

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