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

This work is possible because of donations like you. Your voice is essential.

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

• Long-term scientific monitoring of water quality shifts

The water that flows through you connects you to 7 billion people — and billions more organisms. Join the fight.

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'Thirty years ago, this river was polluted. Through their work, native fish are returning. I watch the difference daily.' — Professor Chen

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