Who We Are

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

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

Who We Are

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

• Invasive management to revive ecosystems

Join thousands of water guardians organizing against pollution.

Who We Are

'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 leading others.' — Jennifer M., Water Guardian

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