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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. Your voice is essential.

Pollution doesn't stop at your neighbor's fence — and our solutions don't either. We work across generations to solve problems at their source.

Join thousands of water guardians organizing for change.

'Thirty years ago, this river was forgotten. Through their work, children can swim safely. I bring my grandchildren to witness it.' — Elder Maria

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