Radon Map and Monitoring Data

The Radon Map of Ireland shows the results of the Radiological Institute of Ireland's National Survey of Ireland.

During this survey, radon measurements were carried out in a number of homes in each 10 km grid square of the National Grid. Houses were chosen at random to give a uniform distribution across the country. In all, over 11,000 homes were measured.

The results were used to predict the percentage of homes in each 10 km grid square with radon concentrations in excess of the national Reference Level of 200 Bq/m3. The radon map has five categories: less than 1%, 1-5%, 5-10%, 10-20% and greater than 20%. If you live in an area designated as 'greater than 20%', this means that more than 20% (1 in 5) homes in that grid square are likely to have radon concentrations above the Reference Level.

To find out more about the Radon Map of Ireland please visit the RPII website.

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What is in the download?

Files are presented as 2 zipped ESRI Shapefiles.

  • • 1: RAD_RadonMap.shp
  • • 1: Radon Map.lyr

  • • 2: RAD_MonitoringStations.shp
  • • 2: Radiation Monitoring.lyr

1: The RAD_RadonMap.shp is an ESRI Shapefile of (polygon data). This is a grid like dataset where the five classifications are dataset can be applied using the Radon May.lyr file.

2: The RAD_MonitoringStations.shp is an ESRI Shapefile of (point data). This dataset contains the location of 41 Monitoring Stations including their 'Stations Status' as well as more detailed information on each monitoring station given through an URL.

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