radon levels st louis county 5

https://radontestresultsinfo.trexgame.net/understanding-your-radon-test-results-and-what-they-mean-for-your-home

Radon levels in St. Louis County vary by location, with some areas having higher concentrations due to the region's geology. It's a good idea to test your home, as long-term exposure can be harmful—especially in basements or lower levels.