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

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

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

• Invasive management to rebuild resilience

Join thousands of environmental advocates pushing back against pollution.

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

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