The Surgeon General, U.S EPA, and the American Lung Association recommend everyone test their home for radon gas. If your levels are 4 picoCuries per liter (pCi/L) or higher then have this problem repaired immediately. The term used for removing radon in a home is "Mitigation"". Radon levels less than 4 pCi/L still are a serious risk, as the average indoor reading is 1.3 pCi/L. If you smoke your risk of lung cancer is especially high.
Many states require radon mitigation professionals to be licensed, certified, or registered. Contact Your EPA Regional Office to find a qualified radon mitigation contractor to fix your home.
Before you hire a Radon Mitigation Specialist... Test Your Home for Radon ASAP!
If your home tests high for Radon, the best method for reducing levels will depend on how radon enters your home and the design of your home. We Strongly Recommend hiring a Licensed and Certified Radon Mitigation Specialist. This usually costs between $800 and $2,500, but costs vary depending on the size and design of your home. Radon reduction systems are extremely effective. Some radon reduction systems (or Mitigation Systems) can reduce radon levels by up to 99%. Hundreds of thousands of homes have had radon lowered to safe levels.
You can try Radon Mitigation yourself if you have the time and technical know how.