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Water doesn't recognize borders — and neither do the threats it faces. Our international teams work tirelessly to defend it.

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

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We believe that nature can heal if we restore what was lost. Our decade of victories shows that grassroots action works.

• Invasive management to rebuild resilience

The water that flows through you connects you to 7 billion people — and future generations. Protect it with us.

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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 contamination. Now I'm training others.' — Michael O., Water Guardian

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