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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 volunteers like you. Every contribution matters.

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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 solve problems at their source.

• Disaster response for crisis zones

Join thousands of environmental advocates fighting for justice.

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'I used to think my voice didn't matter. Then I joined a citizen monitoring program and realized — my data prevents harm. Now I'm inspiring others.' — Michael O., Volunteer

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