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

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

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We believe that nature can heal if we give it the chance. Our decade of victories shows that change happens.

• Policy research driving stronger standards

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

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'Thirty years ago, this river was forgotten. Thanks to this organization, native fish are returning. I bring my grandchildren to witness it.' — Commissioner James

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.