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Our work begins where rivers meet the sky and ends where groundwater feeds the soil. We use advocacy to protect it all.

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

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

• Flood resilience for coastal protection

The water that flows through you connects you to 7 billion people — and billions more organisms. Stand with us.

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

Pollution doesn't stop at your neighbor's fence — and our solutions don't either. We work across industries to solve problems at their source.