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

This work is possible because of donations like you. Learn how you can join.

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

• Real-time data networks of water quality shifts

The water that flows through you connects you to 7 billion people — and countless ecosystems. Join the fight.

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'Thirty years ago, this river was polluted. Because we organized, native fish are returning. I watch the difference daily.' — Elder Maria

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