Abstract
The indoor radon risk in Valencia (Spain) was studied more than twenty years ago in two surveys using different methodologies and leading to contradictory results. We report here on new indoor radon measurements with the charcoal canister technique, which confirm the low average level of indoor radon in the city, with a geometrical mean of 24Bq/m 3 and an arithmetic mean of 27Bq/m 3. © 2010 Elsevier Ltd.
