Join Us

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 donations like you. Together we can turn the tide.

The science is clear: healthy water systems feed us, sustain us, and deserve our protection. We propose solutions so nature can recover.

Join thousands of environmental advocates organizing for change.

'Thirty years ago, this river was dying. Because we organized, native fish are returning. I watch the difference daily.' — Dr. Robert L.

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.