The surgeon general has classified radon as the number 2 cause of lung cancer in the U.S. The current acceptable radon level has be 4.0 pCL/l since 1988. That number was recently reduced 48% by WHO, the World Health Organization, to 2.7 pCL/l according to this press release. Looking at the national map shows that there are currently 3 zones across the country, with PA and the Chester County area being one of the high potential zones (see the PA picture). This may be reduced to 2 looking at the EPA numbers.
From the release:
The World Health Organization has released their Handbook on Indoor Radon which strongly validates the worldwide threat of exposure to radon gas. According to handbook, WHO has been studying the effects of radon exposure since 1979. Although radon was classified as a human carcinogen in 1988, it took over 20-years of sound research and real-life studies from all over the world to confirm the true magnitude of the risk radon poses. Based on the results of these studies, WHO now suggests that homeowners take action when radon levels exceed 2.7 pCi/l. This is a much more conservative figure than the Environmental Protection Agency (EPA’s) action level of 4.0 pCi/l, which has been the U.S. standard for over 20-years.
It is fairly common to get some level of radon in this area. Those people who choose to test usually spend around $100-120. The bill for radon remediation can run upwards from $900 depending on various factors (house size, system size, etc.). Not huge compared to other issues that can be found, but certainly a potential unexpected expense. According to the release, levels can be reduced using current technology for this new level.
We have NOT been told to change our current level of 4.0 in PA, yet. I do understand that it will be changed to align with WHO. How soon? I don’t know yet, but when I do I’ll be sure to post an update.
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Article by John Lauber
My name is John Lauber and I'm a Realtor in Chester County, PA. I love living and working in this area as there is so much to do here. If you have any questions feel free to contact me. I'm happy to help.
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