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 community members like you. Together we can turn the tide.

Our Mission

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

• Policy research driving enforcement

Join thousands of climate leaders fighting against pollution.

Our Mission

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

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