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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. Learn how you can join.

We believe that nature can heal if we remove barriers. Our growing coalition shows what's possible.

Join thousands of environmental advocates fighting against pollution.

'Thirty years ago, this river was forgotten. Thanks to this organization, children can swim safely. I work alongside their team.' — Elder Maria

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