Abstract
The present study was carried out to measure the radon activities in twenty six local and imported bottled waters using nuclear track detector type CR-39. Radon activities and exhalation rates ranged between 0.02-0.40 Bq L-1 and 0.44-8.33 mBq m(-2)h(-1), respectively. The mean value of radon activities in local bottled waters was lower than the mean value in imported bottled waters. However, all these values are lower than the allowed level in drinking water, 11 Bq L-1. The effective doses due to ingestion of radon for children and adults were estimated to assess the potential health risk. These doses were well below the recommended level by World Health Organization.