Potentially buying a house (~30 years old) which currently has a radon mitigation system put in 2006. The current level post a recent radon test is 1.5 pci/L in basement. I know EPA recommends anything below pci/l 4, with recent updated saying (2 pci/l) being even better. As the house already has a radon mitigation system I was hoping levels would come in below 1 pci/L. Should I be concerned if we want to use basement in future ? Would appreciate any thoughts on anyone who has dealt with a radon mitigation system.
Any exposure to radon will increase your risk of developing cancer. The greater and lengthier the exposure, the greater the risk.
That said, radon is everywhere. Generally corrective measures are not taken inside a home unless levels are at or above 4 pCi/L.
Under 2 pCi/L is considered an "acceptable" level of radon but there is no "safe" level.
You should make your house buying decision on what makes you comfortable. In certain geographical regions, you might not find any houses without detectable radon.
As Zigner asked, do you have a legal issue that needs addressing? FreeAdvice is a forum that offers legal information and advice.