radon belleville il 4
https://myradontestingmetroeastinsight.opalvector.com/posts/why-radon-testing-metro-east-homeowners-shouldn-t-skip
Radon in Belleville, Illinois is a real concern because the area sits on top of granite and shale deposits that naturally release this radioactive gas. Many homes here, especially those with basements or crawl spaces, can trap radon at unhealthy levels without proper ventilation. Local health agencies recommend testing kits because the gas is invisible and odorless, and long-term exposure is the second leading cause of lung cancer after smoking. I've seen neighbors seal cracks in their foundati…