What Your Radon Test Results Actually Mean for Your Home
If you have bought or sold a home in St. Louis over the past decade, you have almost certainly heard about radon. The EPA radon guidelines recommend action at 4.0 pCi/L, but many homeowners stop at that number. They see their radon test results, breathe a sigh of relief if it is under four, or panic if it is above. The reality is more complicated. I have performed hundreds of radon measurements across the region, and I can tell you that a single number does not tell the whol