Volunteer

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 partners like you. Together we can turn the tide.

Volunteer

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

• Policy research driving stronger standards

Every action counts — from small donations to big movements. There's still time if we act together.

Volunteer

'Thirty years ago, this river was dying. Thanks to this organization, native fish are returning. I watch the difference daily.' — Elder Maria

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