Kentucky radon levels by county

Kentucky Radon Levels by County

Kentucky has some of the highest indoor radon in the country — and it varies sharply by county. Below is the measured average for every Kentucky county we serve (CDC test data, 2008–2017), compared to the U.S. average of 1.3 pCi/L and the EPA action level of 4.0. Find your county to see what's typical and what to do next.

County	Avg radon (pCi/L)	vs U.S.	Status
Warren County →	14.3	11×	Above action level
Jessamine County →	8.8	6.8×	Above action level
Fayette County →	8.1	6.2×	Above action level
Scott County →	8.1	6.2×	Above action level
Hardin County →	6.8	5.2×	Above action level
Christian County →	5.7	4.4×	Above action level
Franklin County →	5.7	4.4×	Above action level
Jefferson County →	5.3	4.1×	Above action level
Madison County →	5.1	3.9×	Above action level
Boone County →	4.8	3.7×	Above action level
Henderson County →	3.4	2.6×	Below action level
Kenton County →	3.2	2.5×	Below action level
Daviess County →	2.8	2.2×	Below action level

Source: CDC National Environmental Public Health Tracking Network — mean pre-mitigation radon level in tested buildings, Kentucky, 2008–2017. Every home should be tested regardless of county average.

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