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Radon levels in the South West

Radon is present in the air throughout the country.  We all breathe it in throughout our lives and for most UK residents, radon accounts for half of their total annual radiation dosage.

Geological conditions in certain areas however, can lead to higher than average levels. Some of the highest radon levels have been found in the south-west. Exposure to particularly high levels of radon may increase the risk of developing lung cancer.

The former National Radiological Protection Board (now the Health Protection Agency) has produced maps of the UK showing the areas most likely to be at risk from radon. The maps are based on tests carried out in houses. The geology of the south-west is such that there many areas where higher than average radon can be found. There is also a radon atlas for England.

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