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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 community members like you. Learn how you can join.

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We believe that nature can heal if we restore what was lost. Our growing coalition shows that grassroots action works.

• Real-time data networks of water quality shifts

Join thousands of water guardians organizing against pollution.

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'Thirty years ago, this river was dying. 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 industries to hold polluters accountable.