Abstract
Radon, a naturally occurring radioactive noble gas, is the main source of the natural radiation that is received by the population. It derives from the traces of radium in rocks and can diffuse directly or as solution in water to the earth’s surface. Measurements of 222Rn, 226Ra and 228Ra concentration in a total of 19 different well waters samples collected from Al-Jawa were investigated. The concentrations of 222Rn were measured by RAD 7 H2O technique. The concentration of 226 Ra and 228Ra were measured using gamma spectrometry preceded by ion exchange chromatography separation. It was found that the concentration of 222Rn ranged from 1.45 ± 1.19 to 9.15± 1.55 BqL-1. These values are below 11 BqL-1 the maximum contamination level recommended from the U.S. Environmental Protection Agency. The total radium concentration for all samples exceeds 5 pCi/L maximum contamination level for lifetime risk of cancer associated with drinking water recommended by the U.S. Environmental Protection Agency Keywords. Radon · Radium · Well water · Annual effective dose - Al-Jawa
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