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Our work begins where rivers meet the sky and ends where groundwater feeds the soil. We use partnerships to protect it all.

This work is possible because of scientists like you. Every contribution matters.

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

Join thousands of water guardians pushing back for change.

'Thirty years ago, this river was forgotten. Through their work, children can swim safely. I work alongside their team.' — Professor Chen

Pollution doesn't stop at your neighbor's fence — and our solutions don't either. We work across political boundaries to hold polluters accountable.