Our Work

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

This work is possible because of scientists like you. Every contribution matters.

Our Work

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

• Early warning systems of water quality shifts

Join thousands of climate leaders organizing against pollution.

Our Work

'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 training others.' — David T., Water Guardian

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