pumper
Well-known member
I've tested my house twice over the last ten years for radon, once in the basement and once on the first floor living room. Both times the reading was 4.1 pCi/L (picocuries per liter). EPA recommends homes be fixed if the radon level is 4 pCi/L or more. Has anyone else tested, and what did you do to remedy a high reading, if anything? Costly?