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Water doesn't recognize borders — and neither do the threats it faces. Our international 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 remove barriers. Our growing coalition shows that grassroots action works.

• Policy research driving stronger standards

Join thousands of water guardians pushing back against pollution.

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'Thirty years ago, this river was dying. Because we organized, children can swim safely. I work alongside their team.' — Commissioner James

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