Give Today

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. Your voice is essential.

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

Join thousands of environmental advocates organizing for change.

'Thirty years ago, this river was dying. Through their work, native fish are returning. I bring my grandchildren to witness it.' — Professor Chen

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