Radon is a radioactive element which occures naturally in earth materials. Exposure to high concentrations of radon is known to increase the risk
of lung cancer. Accurate mapping of its occurrence can help identify households
potentially at risk from exposure to radon and assist with highlighting high
radon areas for future development. In Ireland, the radon risk map is produced from indoor radon measurements by the Office of Radiological Protection of the Environmental Protection Agency (EPA) . In areas where few measurements exist there may be difficulty in determining radon risks. Geological Survey Ireland is working with the EPA to understand and predict natural sources of radon in rocks, soils and waters nationwide, as part of the National Radon Control Strategy.