radon levels missouri 3

https://radonofallonmosite.rivertonbrief.com/posts/understanding-radon-risks-in-o-fallon-mo-what-homeowners-need-to-know

Radon levels in Missouri often exceed the EPA's recommended action level, especially in the northern and central parts of the state where uranium-rich soil is common. Testing your home for this invisible, odorless gas is a straightforward way to see if you need to install a mitigation system to lower the risk of long-term exposure.