EPA Releases FAQ Item on Radon/Granite

Question: What about radon in granite countertops?

Does the EPA believe that radon is in granite counters? 

There is some evidence that some granites used in countertops may contain varying concentrations of uranium which produces radon.

Are the levels dangerous to humans or animals? 

There is too little information and too many variables to generalize about the potential or actual risk.

Has the EPA done studies on radon in granite counters? 

No

Does the EPA have plans to conduct a study on radon in granite countertops? 

Not at this point in time.

What advice does the EPA offer consumers who have granite counters? 

Test the air in your home first and mitigate if the result is 4 pCi/L or more.  Learn more about radon at  www.epa.gov/radon.