Radon in Nashville, Tennessee

Is radon a problem in Nashville, TN?

Yes, it can be. Nashville is in Davidson County, which EPA places in Zone 1, the highest radon-potential category: 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.

Do new homes in Nashville have to be built radon-resistant?

Yes. Metro Nashville adopted the 2024 code's radon appendix (Appendix BE) in July 2025, so new one- and two-family homes permitted by Metro must include radon-control features. Belle Meade, Berry Hill, Forest Hills, Oak Hill and Goodlettsville issue their own permits, so check which office issued yours. Either way, ask your builder which radon features were installed and test after you move in: radon-resistant construction lowers the chance of high radon but doesn't replace a test. What your result means · Choosing a radon professional

How do I get a free radon test kit in Nashville?

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; return postage is prepaid. How to test your home

What if my Nashville home tests high for radon?

EPA recommends fixing your home at 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, then hire an NRPP- or NRSB-certified mitigation professional; Tennessee doesn't license radon contractors. What your result means · Choosing a radon professional

Where can I learn more about radon in Davidson County?

The Davidson County, TN radon guide covers every permitting jurisdiction in the county, state test data and sources.

Sources: Davidson County radon guide and its sources · EPA Map of Radon Zones: Tennessee · Tennessee Radon Program · EPA, Health Risk of Radon

Last reviewed October 17, 2026 by the Tennessee Radon Authority editorial team. How we research.