Chlorinated drinking water may increase cancer risk. Research by Swedish scientists found that consuming chlorinated water raises the likelihood of bladder cancer by 33% and colorectal cancer by 15%. This is due to the formation of trihalomethanes, a known carcinogen.
However, alternative methods like ultraviolet treatment or advanced filtration systems can reduce cancer risks, but they are significantly more expensive. The US and EU standards for chlorination have been in place since the early 20th century, but new studies suggest that these risks may be underestimated.
Experts recommend further research to better understand these risks. Meanwhile, some countries are exploring alternative water purification methods.
Source: https://zamin.uz/en/world/144836-chlorinated-water-may-increase-cancer-risk.html