Is radon high in Spring Hill, Tennessee?

Low. Averaging the model's ZIP-code predictions across Spring Hill (weighted by how much of the city each ZIP covers) gives a long-term basement mean of 1.9 pCi/L - close to the US average of 1.8 and about 15% below the Tennessee average of 2.3. That is below the EPA's 2 pCi/L "consider fixing" threshold, though individual homes still vary. Spring Hill ranks 16 of 20 Tennessee cities on this site.

Which Spring Hill ZIP codes have the highest radon?

Predictions for the 3 modeled ZIP codes in Spring Hill range from 1.9 to 3.0 pCi/L in the basement. 0% of them are predicted at or above 4 pCi/L and 67% at or above 2. That spread is why the ZIP table below matters more than the city-wide number.

Should I test for radon in Spring Hill?

Yes, once. The EPA recommends testing every home regardless of area. A short-term kit costs little and settles the question for your house; Spring Hill's low predicted average describes the typical home, not yours.

What does EPA Radon Zone 3 mean for Spring Hill?

Spring Hill sits mainly in Maury County, which the EPA classifies as Zone 3 - low potential (< 2 pCi/L). The zone map dates from 1993 and covers whole counties. The 2001-2021 model agrees with the zone for the city. Neither replaces a test of your own home.

Radon levels in Spring Hill, Tennessee

LowEPA Zone 3

Predicted long-term basement average of 1.9 pCi/L (model estimate) across the 3 modeled ZIP codes in Spring Hill - close to the US average of 1.8, about 15% below the Tennessee average of 2.3. Ranked #16 of 20 Tennessee cities on this site. Most of the city lies in Maury County (its ZIPs also reach into 1 other county).

Test Spring Hill, TN once anyway - radon varies house to house

The predicted basement average here is 1.9 pCi/L, below the EPA's 2 pCi/L "consider fixing" threshold. That's good news for the area - but the EPA still recommends every home be tested, because foundation cracks, soil pockets and ventilation make one house very different from its neighbor. One inexpensive kit settles it.

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Predicted (model estimate). The pCi/L figures on this page are long-term area averages from a peer-reviewed national model built on millions of real radon tests (2001-2021). They describe the typical home in this area - not your home, which can be several times higher or lower. The EPA radon zone is a separate, 1993 county-level classification. How the numbers work.

1.9 ± 0.07

pCi/L predicted basement mean (model SD)

1.3 ± 0.08

pCi/L predicted upstairs (above-ground) mean

1.9-3.0

range of ZIP-level basement predictions in the city

of Spring Hill ZIPs predicted ≥ 4 pCi/L (67% ≥ 2)

What this means for Spring Hill

The typical Spring Hill home is predicted below 2 pCi/L, the lowest band. That describes the average house; the ZIP-level predictions inside the city still span 1.9 to 3.0 pCi/L.

The city figure is not a separate estimate: it is the mean of the model's ZIP-code predictions, weighted by the share of the city's land in each ZIP (Census 2020 ZCTA-to-place relationship file). The 1993 EPA zone (3) for Maury and the 2001-2021 model agree here.

Comparable Tennessee cities: Brentwood (2.1), Smyrna (2.1), Chattanooga (2.2), Hendersonville (2.2).

ZIP codes in Spring Hill

ZIPs that overlap the city, largest share of its land first. Predicted basement and upstairs means are model estimates; ZIPs the model does not cover show a dash.

ZIP	Share of city	Basement	Upstairs	Grade
37174	85%	1.9 ± 0.06	1.2	Low
37179	13%	2.2 ± 0.10	1.7	Moderate
38401	2%	3.0 ± 0.06	2.0	Moderate

Testing help in Tennessee

We link only state program pages we could verify, and Tennessee's did not respond when we checked, so start from the EPA state radon contacts page. If a test comes back at 4 pCi/L or higher, mitigation typically costs $800-$2,500 installed; use EPA find-a-professional and read the mitigation guide.

Spring Hill radon questions

Is radon high in Spring Hill, Tennessee?: Low. Averaging the model's ZIP-code predictions across Spring Hill (weighted by how much of the city each ZIP covers) gives a long-term basement mean of 1.9 pCi/L - close to the US average of 1.8 and about 15% below the Tennessee average of 2.3. That is below the EPA's 2 pCi/L "consider fixing" threshold, though individual homes still vary. Spring Hill ranks 16 of 20 Tennessee cities on this site.
Which Spring Hill ZIP codes have the highest radon?: Predictions for the 3 modeled ZIP codes in Spring Hill range from 1.9 to 3.0 pCi/L in the basement. 0% of them are predicted at or above 4 pCi/L and 67% at or above 2. That spread is why the ZIP table below matters more than the city-wide number.
Should I test for radon in Spring Hill?: Yes, once. The EPA recommends testing every home regardless of area. A short-term kit costs little and settles the question for your house; Spring Hill's low predicted average describes the typical home, not yours.
What does EPA Radon Zone 3 mean for Spring Hill?: Spring Hill sits mainly in Maury County, which the EPA classifies as Zone 3 - low potential (< 2 pCi/L). The zone map dates from 1993 and covers whole counties. The 2001-2021 model agrees with the zone for the city. Neither replaces a test of your own home.

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