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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.

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

• Indigenous partnerships for sovereignty

Join thousands of climate leaders organizing for change.

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'Thirty years ago, this river was polluted. Thanks to this organization, children can swim safely. I bring my grandchildren to witness it.' — Commissioner James

We believe that nature can heal if we give it the chance. Our 20-year track record shows that grassroots action works.