Water chlorination levels in US and EU likely increase cancer risk, study finds

Bladder cancer risk increased 33% and colorectal cancer by 15% in using chlorine to disinfect waterChlorinating drinking water at levels common in the United States and European Union probably increases the risk of several cancers, a new analysis of recent research from across the globe finds.The process of disinfecting water with chlorine creates trihalomethane (THM), a byproduct found in virtually all public drinking water systems across the US and EU – nearly 300 million people in the US have concerning levels in their water, by one estimate. Continue reading...

Feb 17, 2025 - 14:19
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Water chlorination levels in US and EU likely increase cancer risk, study finds

Bladder cancer risk increased 33% and colorectal cancer by 15% in using chlorine to disinfect water

Chlorinating drinking water at levels common in the United States and European Union probably increases the risk of several cancers, a new analysis of recent research from across the globe finds.

The process of disinfecting water with chlorine creates trihalomethane (THM), a byproduct found in virtually all public drinking water systems across the US and EU – nearly 300 million people in the US have concerning levels in their water, by one estimate. Continue reading...