Mayo at high risk from cancer causing radon

AN aerial survey of Mayo has revealed that many areas – including higher population centres such as Ballina, Ballinrobe, Ballyhaunis, Crossmolina and Swinford - have higher than normal readings of radon, a naturally occurring radioactive gas.

Radon is a known cause of cancer, particularly lung cancer. Odourless, colourless and tasteless, it results from the decay of uranium in rocks and soils.

When it enters into a house or building it can sometimes build up to unacceptably high concentrations.

A cancer specialist on an RTÉ science programme, co-hosted last month by Mayo born Dr. Aoibheann Ó Suilleabháin, highlighted the particular danger of lung cancer.

Radon decays to form tiny radioactive particles. When these particles are inhaled they give a radiation dose that may damage cells in the lungs.

Data gathered recently by low flying planes as part of an aerial survey on behalf of the Environmental Protection Agency (EPA) has confirmed that many parts of Mayo have higher than recommended radon gas levels.

Apart from the aforementioned Ballina, Ballinrobe, Crossmolina, Ballyhaunis and Swinford, these areas include Mayo Abbey, Newtown Cloghans (Knockmore), Pontoon, Rathlackan (Killala), Shrule, Aughamore, Attymass, Ballindine, Ballintubber, Ballyglass (Claremorris), Bonniconlon, Ballyvary, Claremorris, Kilkelly and The Neale.

The EPA Office of Radiological Protection has published an interactive radon map. It is available online. The EPA recommends that all householders have their homes tested for radon. It provides a radon testing service for a nominal charge, about €56. It is estimated that up to 250 lung cancer cases nationwide are caused each year by a build up of radon in buildings.

In a bid to lessen the risks, homes built in recent years have been fitted with radon barriers during construction.