Which Granite Has The Most Radon

The health physics society after testing several samples of commercial granite concluded that the radon produced by a typical granite countertop would be about 30 times lower than the level laid out in the epa guidelines.

Which granite has the most radon.

Some granite countertops have been found to give off trace amounts of radon and reporters cited a few kitchens with radon levels as high as 25 times the epa s safety limit of 4 picocuries per liter of. At most only a tiny percentage of them have been tested for radon or radiation levels but a recent test of 13 types of granite typically used for countertops found no radon or very low levels of. Recent media attention has focused on granite counter tops and whether they can increase your indoor radon levels. Fact all natural products especially stone minerals.

While radon gas and radiation emission levels attributable to granite are not typically high there are simply too many variables to generalize about the potential health risks inside a particular home that has granite countertops. The epa says that approximately one of every 15 homes throughout the country whether new or old has elevated radon levels. Environmental protection agency has published guidelines regarding permissible concentrations of radon in air. Ok so the risk from granite is minuscule but how common is radon in u s.