Maury-specific radon rules located
Searches of county and municipal code sources found no rule comparable to Nashville’s public-building survey regulation.
01 / Risk
The dashboard confirms a high reading—not a county test count.
Maury is an EPA Zone 1 county, the highest radon-potential designation. The Tennessee dashboard’s Maury tooltip was checked live and showed the three values below.
Maury County tooltip readings
pCi/L · Tennessee Radon Testing dashboard · 2022–2023
02 / Building codes
Only Columbia clearly requires the radon appendix.
The requirement follows the permitting jurisdiction—not simply the mailing address. Spring Hill spans Maury and Williamson counties; its 2026 ordinance applies inside city limits but does not list an adopted radon appendix.
Jurisdiction
IRC edition
Radon appendix
Authority
Columbia
2024 IRC
Yes · BE
Required in Zone 1
Spring Hill
2024 IRC
No · BE
Not referenced in Ord. 26-07
Mt. Pleasant
2024 IRC
Unclear · BE
Not specifically referenced
Unincorporated Maury County
2018 IRC
No
Optional, not required
Why adoption makes the city requirements mandatory
The 2024 IRC Appendix BE scope says jurisdictions determine inclusion using local data or Zone 1 designation, and that appendix provisions are not mandatory unless the adopting ordinance references them. Columbia references BE directly. Mt. Pleasant’s Ord. 2025-1136 adopts the 2024 IRC and names only Appendices AB (not adopted) and BD, so the radon appendix is not specifically referenced. Spring Hill’s Ordinance 26-07 adopts the 2024 IRC and references no appendices, so BE is not in force there. The county’s resolution likewise lists no appendix, so Appendix F is not in force in unincorporated areas.
03 / Local rules
No extra county mandate was found for schools, public buildings or sales.
School testing is encouraged—not required.
Tennessee law says local education agencies are “encouraged” to run indoor-air programs that “may include” radon testing.
A 2017–2018 bill that would have required annual testing did not become law. No separate Maury County school mandate was found.
04 / Resources
Radon testing resources
Start with a test, know where to get help, and act on a high result.
Test your home
- Free test kit from TDEC, Tennessee’s radon program
- Buy a kit by phone: 1-800-SOS-RADON (1-800-767-7236)
- Live help with your questions: 1-800-55RADON (1-800-557-2366)
- Find a certified pro: NRPP 800-269-4174 · NRSB 866-329-3474
Hotline information: U.S. EPA and CDC.
If your result comes back high
1-800-644-6999 — the Fix-It Hotline, for general guidance on lowering radon in your home.
Hotline information: U.S. EPA and CDC.
Learn more
Why it matters
- Radon causes about 21,000 U.S. lung cancer deaths a year—the second-leading cause overall and the number-one cause among people who never smoked.
- At 4 pCi/L, EPA estimates about 62 in 1,000 smokers could get lung cancer from lifetime exposure, versus about 7 in 1,000 people who never smoked.
- About 1 in 15 homes has high radon.
- Retest at least every 2 years if you have a mitigation system, and after renovations or changes to how you use the lowest floor. EPA recommends taking action at 4 pCi/L and considering it between 2 and 4.
Health statistics: American Lung Association.
Sources & method
Research completed October 14, 2026. Official code publications and live directories are separated from secondary references. The state dashboard is a voluntary-submission dataset, not a random county sample.
Official and primary
- Maury County Building & Zoning Office
- Maury County Res. 01-20-32
- Mt. Pleasant Code, Title 12
- Columbia municipal code, Change 11 (June 11, 2026), §§12-101–102
- Spring Hill Ord. 26-07 (25-page ordinance; adopted and effective June 1, 2026)
- 2024 IRC Appendix BE
- Tennessee Radon Testing dashboard
Scope note: “Required” here means the cited jurisdiction adopted the IRC radon appendix and Maury County is in Zone 1. A site-specific radon result can only come from testing the building.