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 volunteers like you. Your voice is essential.

Impact

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

• Habitat restoration to prevent extinction

Join thousands of climate leaders pushing back against pollution.

Impact

'Thirty years ago, this river was dying. Because we organized, the ecosystem breathes again. I bring my grandchildren to witness it.' — Commissioner James

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