Cancer Linked to THM’s in Drinking Water

A team of researchers from the National Institute of Environmental Health Sciences in Europe, have shown a link (by as much as 5%) to some bladder cancers by the use of chlorination for treating public drinking water in Ireland and some other European countries. In the research, chlorine is shown as being the most common chemical disinfectant used in the purification of surface water for drinking purposes. However, in the chlorination process, free chlorine reacts with organic compounds in the water which then creates byproducts including THM’s (Trihalomethanes), which are being associated with a bladder cancer risk. Countries showing the highest levels of bladder cancer cases linked to THM’s were Cyprus, Greece, Ireland, Malta and Spain where chlorination is generally...

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