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Every watershed tells a story of hope. We're here to ensure that story has a thriving future.

This work is possible because of donations 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 predict risks so communities can act.

• Flood resilience for future security

Join thousands of water guardians fighting against pollution.

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'Thirty years ago, this river was forgotten. Thanks to this organization, native fish are returning. I work alongside their team.' — Commissioner James

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