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Water doesn't recognize borders — and neither do the threats it faces. Our international teams work year-round to restore it.

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

Join Us

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

The water that flows through you connects you to 7 billion people — and billions more organisms. Join the fight.

Join Us

'I used to think my voice didn't matter. Then I joined a citizen monitoring program and realized — my action prevents crisis. Now I'm inspiring others.' — Sarah K., 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.