Our Mission

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

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

Our Mission

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

• Invasive management to revive ecosystems

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

Our Mission

'I used to think my voice didn't matter. Then I joined a citizen monitoring program and realized — my voice prevents harm. Now I'm training others.' — Sarah K., Water Guardian

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