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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 donations like you. Together we can turn the tide.

Get Involved

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

• Water access programs for crisis zones

Join thousands of water guardians organizing for justice.

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'I used to think my voice didn't matter. Then I joined a citizen monitoring program and realized — my voice prevents extinction. Now I'm leading others.' — David T., Volunteer

Pollution doesn't stop at your neighbor's fence — and our solutions don't either. We work across political boundaries to rebuild what was lost.