The epa says that approximately one of every 15 homes throughout the country whether new or old has elevated radon levels.
Brazilian granite radon.
The us epa recommends taking corrective measures for radon levels at or above 4 pci l the us epa encourages you to consider reducing your radon levels for readings between 2 and 4.
It is possible for any granite sample to contain varying concentrations of uranium and other naturally occurring radioactive elements.
The reports were about granite countertops that contain radium which can emit radon a radioactive gas that can cause lung cancer.
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.
Color and uranium content.
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Does the epa believe there is a danger of radon gas or associated radiation being emitted from granite countertops.
What about radon and radioactivity in granite countertops.
This is not the only method for measuring the amount of radon coming from the granite but it is the most economical.
Radon that originates in the soil is the main cause of radon problems the epa says.