home radon testing 4

https://rapid-wiki.win/index.php/Why_Radon_Water_Testing_Matters_for_Private_Well_Owners_in_York_County

Home radon testing is surprisingly simple: you set up a small detector in the lowest livable area, leave it for a few days or months depending on the type, then mail it to a lab. The results tell you whether this radioactive gas—the second-leading cause of lung cancer—is seeping in through your foundation. Many test kits cost under $20, and the peace of mind is invaluable, especially if you live in a region with high geologic radon potential.