Radon Testing in Cincinnati, OH

Radon Testing in Cincinnati involves short-term (2-7 day) charcoal canister or continuous radon monitor placement on the lowest occupied level, working on the lowest lived-in level of the home where occupants spend more than 4 hours per day. The service is the first step for any home that has not been tested in the last 2 years, for any home being sold, and for any home after a significant foundation, basement, or HVAC modification.

Cincinnati's owner-occupied core is dominated by 1920s-1960s houses over full basements, many with original block or early-poured walls, floor-drain penetrations, and no vapor barrier under the slab. Older Over-the-Rhine and West End brick stock frequently sits on stone rubble foundations where soil gas enters through the wall itself rather than a single slab crack. The Cincinnati Arch geology under the city is fractured limestone and shale, which drives the radon and basement-moisture profile that shapes most retrofit decisions. Cincinnati sits on the Cincinnati Arch geology (fractured Ordovician limestone and shale) that drives elevated regional radon exposure across the entire Greater Cincinnati metro, including Hamilton County.

ANSI/AARST MAH-2023 establishes the residential measurement protocol. Closed-house conditions must be maintained throughout short-term testing. The Ohio Department of Health Radon Licensing Program oversees radon program compliance for Cincinnati, and Ohio licensure under ORC 3723.02 applies to any contractor performing mitigation work in the state.