Radon is an odorless, invisible radioactive gas that forms naturally in soil and can enter homes through cracks in basements, crawl spaces, and foundation walls. Because you can’t detect it by smell or sight, the only reliable way to know your indoor risk is to test.
Illinois has regions where radon levels can be high, so the question for many homeowners is not whether radon exists, but whether their specific home has elevated concentrations that warrant action. Public health guidance generally emphasizes testing first, then installing mitigation only when results justify it.
Why radon testing matters in Illinois
Radon exposure is linked to lung cancer, and indoor concentrations can be significantly higher than outdoor levels. Even homes that look sealed or well-maintained can still allow gas to enter through microscopic gaps, plumbing penetrations, or construction joints.
Because r ... Read more »





