Lincoln County Radon · Tennessee county field report · researched Oct. 15, 2026
The radon code is on the books across most of the county. The unanswered question is whether anyone is checking the work.
EPA zone: Zone 1Region: Middle TennesseeState test data: State test figures confirmed on repeat checks
Yes, it can be. Lincoln County is in EPA Zone 1, the highest radon-potential category, where the predicted average indoor screening level is above 4 pCi/L. Levels vary from house to house, so a test is the only way to know your home's level.
Yes in most of the county. Unincorporated Lincoln County's 2018 code explicitly includes the radon appendix (Appendix F), Fayetteville lists the 2024 radon appendix (BE) and Petersburg's code includes Appendix F. Ardmore has no IRC on record. 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 Lincoln County from nearby cities. How to choose a radon professional
Lincoln County is a rare case where radon-resistant construction is adopted on paper—in the unincorporated county, Fayetteville and Petersburg. Published sources do not show whether inspectors enforce it.
A Zone 1 designation describes potential, not a home’s measurement. A passive radon system reduces risk; it does not replace a test. The county’s tested average was below the EPA action level, while its observed maximum reached 4.3 pCi/L.
2018 IRC with Appendix F explicitly included by Zoning Resolution §7.030(H), Amendment 9, adopted Jan. 15, 2019. Applies outside Fayetteville, Petersburg and Ardmore.
County resolution ↗The city’s current page lists the 2024 IRC and Appendix BE, the 2024 radon-control appendix. Its “Adopted June 9, 2020” heading predates that edition, so the ordinance and effective date remain unverified.
City code table ↗2012 IRC with Appendix F included in §12-401. The published text does not state the ordinance number or effective date.
Title 12 ↗The published code is built on 1990s-era Standard codes and contains no IRC chapter. Current enforcement practice may differ; confirm with city hall.
Published Title 12 ↗Elkton is in Giles County, not Lincoln County. Its published Title 12 is also too old to establish a current IRC or radon-appendix status.
MTAS directory ↗No Lincoln County–specific radon rule was found for public buildings, schools or real-estate transactions. Tennessee school testing policy is described as voluntary “encourage.”
Policy review ↗Appendix F is optional until a jurisdiction specifically adopts it. Lincoln County did. Because Lincoln is Zone 1, the appendix’s own trigger points toward radon-resistant new construction. But the documents alone do not prove that inspectors require or verify those features on every permit.
Three live tooltip reads identified “County: Lincoln” and returned the same average and maximum. The page displayed a median label but no value. A prior 1.4 pCi/L transcription is therefore withheld.
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.
Tennessee Form RF201 asks sellers whether they know of environmental hazards including radon gas and advises buyers to include appropriate radon inspection contingencies. Certain transfers are exempt, including qualifying new construction with a written warranty.
Hotlines and action guidance: U.S. EPA and CDC · Health statistics and testing cadence: American Lung Association
012018 IRC, Appendix F and Amendment 9.
02Current 2024 code table and Appendix BE list.
032012 IRC and adopted appendix list.
04Adoption language and Zone 1 county table.
05Live Lincoln tooltip reads; 2022–2023 view.
06ZIP 37334 radius search on Oct. 15, 2026.
07RMS and RMT searches within 50 miles.
08Form RF201, version 01/01/2024.
09Population, permits, ownership and home-value context.
10State program and free test-kit context.