Campbell County, Tennessee · Radon guide
Campbell County’s official risk label looks low. Its state dashboard readings, uneven code coverage, and lack of locally based certified testers tell a more complicated story.
EPA zone: Zone 3Region: East TennesseeState test data: State test figures seen once; shown with a caveat
It can be. Campbell County is in EPA Zone 3, the lowest predicted radon-potential category (below 2 pCi/L on average). Homes with high radon are still found in Zone 3, and the Tennessee Radon Program has found homes needing action in every Tennessee county, so test to know your home's level.
Not clearly anywhere. No countywide requirement was found. Jellico's code adopts a range of appendices that includes radon, but it's unclear whether officials enforce it as mandatory. Local code details
Order a free short-term kit from the Tennessee Radon Program online or by calling 1-800-232-1139. Place it on the lowest lived-in floor, about 3 feet off the floor, for 3 to 5 days, then mail it back right away. How to test your home
EPA recommends fixing your home if radon is 4 pCi/L or higher, and considering a fix between 2 and 4 pCi/L. Confirm a high short-term result with a second test first. What your result means
Tennessee doesn't license radon professionals, so look for NRPP or NRSB certification. Search both national directories by ZIP code; certified professionals often serve Campbell County from nearby cities. How to choose a radon professional
EPA places Campbell County in Zone 3, its lowest predicted-potential category. EPA also says the zone map should not decide whether an individual home gets tested: elevated levels occur in every zone.6
The Tennessee Radon Testing dashboard showed this county average for the 2022–2023 “All” view—just under EPA’s 4.0 pCi/L action level.5
No countywide radon-resistant-new-construction mandate was verified. Jellico is the important exception to watch: its appendix range includes radon, but the documents do not settle whether officials enforce it as mandatory.
Section 12-301 adopts the 2021 IRC “including Appendix Chapters AA through AW,” a range that contains Appendix AF, Radon Control Methods.1 But AF says its provisions are not mandatory unless specifically referenced and apply where radon-resistant construction is required. The published documents leave enforcement ambiguous.4
Title 12 adopts building, plumbing, electrical, fuel-gas, and energy codes, but contains no IRC chapter and no radon appendix. Whether state residential enforcement applies inside the city was not verified.2
The published code adopts the 2015 IRC but names no appendices, so its Appendix F radon provisions are not adopted by that text. The MTAS copy appears dated and should be checked with the town recorder before relying on it as current.3
Tennessee doesn't license radon testers or mitigators, so national certification is the best way to check qualifications. The Tennessee Radon Program points residents to two directories: search them by ZIP code and widen the radius if nothing is listed nearby.
We don't recommend or rank companies. Before you hire, check the certification number in the directory yourself and ask for a follow-up test after any system is installed. Questions to ask a radon professional.
Nothing Campbell-County-specific was found for disclosure or transaction rules. The useful local guidance comes from the contrast between Zone 3, the measured maximum, and incomplete construction-code coverage.
EPA’s zone map predicts broad potential; it does not measure a specific house. Campbell County’s recorded 7.2 pCi/L maximum is evidence that elevated homes exist here.56
Do not assume a new home includes passive radon features. Ask the builder about a gas-permeable layer, sealed slab penetrations, vent piping, and whether the home was tested after completion.
Because the credentialed supply is drive-in, confirm the tester’s active NRPP or NRSB listing and ask whether the company also sells mitigation before hiring.910