Our Mission

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

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

Our Mission

Pollution doesn't stop at your neighbor's fence — and our solutions don't either. We work across political boundaries to rebuild what was lost.

• Early warning systems of water quality shifts

Join thousands of water guardians organizing for change.

Our Mission

'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.' — Jennifer M., Community Monitor

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