Direct answer
Radon (Rn-222) is a colorless, odorless, naturally occurring radioactive gas produced by the breakdown of uranium in soil. It seeps into homes through cracks and gaps and accumulates indoors, where it becomes the second leading cause of lung cancer in the US.
Authoritative sources
Cincinnati and surrounding counties sit in EPA Radon Zone 1, the highest-risk classification.
EPA recommends mitigation above 4.0 pCi/L and consideration of mitigation between 2.0 and 4.0 pCi/L.
Ohio Radon Program guidance on testing, mitigation, and contractor licensure.
Related questions
We connect Greater Cincinnati homeowners with NRPP-credentialed radon mitigators in our partner network. Mon-Sat 8am-7pm.
