The following Irish towns have levels of THM’s which are above the current standard in the Drinking Water Regulations. These standards are being made more strict from Dec 2008 – to 100 migro grams per litre – so these water supplies will be well above the safe levels unless something is done to rectify things. The politicians seem to be keeping quiet about this recent news from the Irish EPA )Environmental Protection Agency) .
THMs are Cancer Group B carcinogens (shown to cause cancer in laboratory animals). Trichloromethane (chloroform) is by far the most common in most water systems. Dibromochloromethane is the most serious cancer risk, (0.6 ug/l to cause a 10-6 cancer risk increase) followed in order by Bromoform (4 ug/l), and Chloroform (6 ug/l).