06/22/2026
π Myth vs. Fact Monday π
MYTH: "It's Tennessee. Radon is a northern problem. We don't need to worry about it down here."
FACT: Tennessee is one of the most radon affected states in the country, and the geology right here in Middle Tennessee is a big reason why. π¬
Here is what the science actually shows. Radon is a colorless, odorless, radioactive gas produced naturally when uranium breaks down in soil and rock. It seeps into homes through foundation cracks, crawlspace gaps, sump pits, and utility penetrations. You cannot see it. You cannot smell it. And it does not announce itself.
Tennessee sits on limestone karst terrain and Chattanooga Shale, both of which contain naturally occurring uranium and create efficient pathways for radon to travel through the soil and into your home. The EPA classifies 41 of Tennessee's 95 counties as Zone 1, the highest risk category. Right here in Sumner County, the average tested radon level is 3.4 pCi/L. That is right at the EPA's consideration threshold of 2 to 4 pCi/L, and individual homes in our area regularly test above the 4.0 pCi/L action level where the EPA recommends immediate mitigation.
According to the Tennessee Radon Program, 1 in 4 homes that request a free test kit come back above that action level. That is not a small number. That is your neighbor's house. β οΈ
Radon is the second leading cause of lung cancer in the United States, responsible for approximately 21,000 deaths every year according to the EPA. The only way to know your home's level is to test it.
The good news is that testing is simple and mitigation works. A certified radon measurement professional, trained and credentialed through InterNACHI and the National Radon Proficiency Program (NRPP), places a test device during your property inspection and your results are included in the report. If levels come back at or above 4.0 pCi/L, a professionally installed sub-slab depressurization system reduces radon by 90 to 99 percent, typically within hours of being turned on. Mitigation costs in Tennessee average $1,200 to $2,500, a fraction of what long term health consequences can mean for your family.
At Absolute Inspectors, our radon testing is performed by an InterNACHI certified inspector. We include it as an add-on to any property inspection, one trip, one report, complete peace of mind. β
Do not assume Tennessee means safe. Test. Know. Protect your family.
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