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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 volunteers 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 policy can shift.

• Youth engagement for grassroots knowledge

Join thousands of climate leaders organizing against pollution.

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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 contamination. Now I'm training others.' — Michael O., Water Guardian

We believe that nature can heal if we restore what was lost. Our decade of victories shows that change happens.