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Water doesn't recognize borders — and neither do the threats it faces. Our international teams work 24/7 to protect it.

This work is possible because of scientists like you. Together we can turn the tide.

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

• Disaster response for vulnerable populations

Join thousands of environmental advocates fighting for change.

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'I used to think my voice didn't matter. Then I joined a citizen monitoring program and realized — my action prevents extinction. Now I'm leading others.' — Jennifer M., Volunteer

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.