EPA says 170,000 homes at risk of cancer-causing radon gas

The gas is linked to increased risk of lung cancer. Picture: PA Photo/thinkstockphotos

Around 170,000 homes across the country are now thought to be at risk from a radioactive gas linked with an increase in lung cancer, with Munster and Connaught particularly vulnerable. 

The Environmental Protection Agency (EPA) said that another 45,000 homes had been added to inventory for radon exposure since the last estimate 20 years ago.