|Format||GIS polygon data (ESRI, MapInfo, others available by request)|
|Price||30p per km2. Subject to number of users, licence fee and data preparation fee.
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The Radon Potential Dataset is the definitive map of Radon Affected Areas in Great Britain, created jointly by Public Health England* (PHE) and the BGS using long-term radon measurements made in over 479 000 homes across Great Britain (without affecting householders' confidentiality), combined with geological map data.
The dataset includes a built in 75 m 'buffer', made up of 50 m to allow for the margin of error in the geological lines, and 25 m to represent the average extent of a home.
PHE recommends that radon levels should be reduced in homes where the annual average is at or above 200 becquerels per cubic metre (200 Bq m-3) — this is termed the Radon Action Level.
PHE defines Radon Affected Areas as those with one per cent chance or more of a house having a radon concentration at or above the Action Level of 200 Bq m-3.
The Radon Potential dataset answers the following questions:
Contact Digital Data for more information.