Radon Measurement in Drinking Water Samples of Mashhad City in Iran

摘要

In the present work, radon concentrations in drinking water samples of Mashhad city with about 4 millions population has been measurement by PRASSI system. Water samples were collected from various places and supplies of public used water in Mashhad, and then radon concentration has been measured tree times for each sample. Result shows about 75% of water samples have radon concentration gather than lOBq/lit which advised EPA as a normal level. According the measuring data, water used by people in most of regions is not low enough and below the EPA proposed limits. Since a main section of radon come in body is due to drinking and household water, and for improvement of the social health level, we suggest using the low radon level water source, or public water supplies authority reducing the radon in the drinkable water before public using.