Short-term kit
Air Chek Short-Term radon test kit you hang, lab fee included
- Lab fee included
In home: 72 to 168 hours
Locations and reports
Radon Levels in Maury County, Tennessee
EPA puts Maury County in Zone 3, its lowest radon zone, and only 8 radon tests from it are on file with CDC (2023). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
39.3%
6.0 pts above TN
- Maury
- 39.3%
- Tennessee
- 33.3%
509 tests, 2008 to 2017
Median result
3.0pCi/L
Below action level
- Maury
- 3.0 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
509
13th of 80 by tests
- Maury
- 509
- Davidson
- 5,592
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Rank in Tennessee
22 of 80
Middle half
- Maury
- 39.3%
- Jefferson
- 56.8%
By share, of 80 with 30+ tests
Read a result for Maury County
Starts at Maury County's median, 3.0 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 3.0 pCi/L
Between 2 and 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Maury County's median reported result, 2008 to 2017.
The data
Maury County, At a glance
Maury County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: High across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Maury County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2022 | 40.9% |
| 2023 | 37.5% |
2023: 37.5%. Across these years the share ran from 37.5% to 40.9%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 8 tests were reported to CDC for Maury County over 2023, and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor this house.
Measured: CDC tracking data. Figure above: 2023. Measured data period: 2005 to 2023 (every CDC figure on file).
Maury County, Compared
Maury County radon figures, compared
Calculated by Radon411In Maury County, about 4 in 10 reported tests over the 2008 to 2017 laboratory totals (200 of 509) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 3.6 points higher. Across 95 Tennessee counties pooled together, 33.3% of tests reached that level, so Maury County runs 6.0 points above its state.
The newest figure, in 2023, counts only 8 tests (37.5% at or above 4 pCi/L), too few to compare, so this reading uses the 509-test figure.
Of 6 neighbours with a figure, 1 reported a larger share at or above 4 pCi/L and 5 a smaller one; the spread is 16.1% (Lewis County) to 40.7% (Giles County). By share, Maury County is 22nd of 80 Tennessee counties with 30 or more tests for the same period.
Half the tests came in under 3.0 pCi/L and half over it; the single highest reached 68.1 pCi/L. Below the action level, 178 tests (35.0%) came in under 2 pCi/L, against 42.4% statewide, and 131 tests (25.7%) fell between 2 and 4, against 24.3% statewide.
The reported tests do not follow EPA's Zone 3 label for Maury County (predicted average under 2 pCi/L): 39.3% of them reached 4 pCi/L, more than a low-potential zone suggests. USGS geology rates 100% of the county's land high radon potential. CDC also counts 33 tests taken after mitigation in Maury County for the same period: tests in homes where a fix was already in.
The busiest year on file was 2022, with 66 tests reported; the quietest, 2023, had 8.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Maury County, Geology
The ground under Maury County
PredictedUSGS's geologic map puts all of Maury County's mapped land in one class: high radon potential. The map puts 90.6% of Maury County in the area it calls Nashville Basin and 9.4% in Cherty Highland. USGS gives the first a radon index of 14 and the second 12, both in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Nashville Basin | Mississippian Limestone. | High | 14 | 90.6% |
| Cherty Highland | Cherty dolostone. | High | 12 | 9.4% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Maury County beside the ground around it
Maury County has more high-potential ground than Tennessee as a whole: 100% of its land against 47.2%. Of the 6 counties that border it, none has as large a share of high-potential ground; Lawrence County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Maury County, Local resources
Radon testing and mitigation in Maury County
- Tennessee Radon ProgramTennessee Radon Program, run by Department of Environment & Conservation, offers free or discounted test kits, and answers questions about testing and mitigation in Tennessee.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
The Tennessee Radon Program provides free radon test kits and information assistance to residents, while also providing training opportunities to radon professionals across the state.
- Compare kits
- Professionals in Tennessee1 professional is listed in Tennessee.
What Tennessee's program says
- Phone
- 1-800-232-1139
- TDEC.Radon@tn.gov
What it means
Maury County, Questions
Questions about radon in Maury County
Are radon levels high in Maury County?
In 2023, 37.5% of the radon tests reported to CDC for Maury County, Tennessee were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.0 pCi/L. Of 80 Tennessee counties with 30 or more tests for the same period, 21 reported a higher share; pooled, the state comes to 33.3%.
Which counties border Maury County?
Maury County borders 6 counties: Marshall County, Williamson County, Lewis County, Hickman County, Lawrence County and Giles County.
Products
Maury County, Products
Testing a home in Maury County
In Maury County, 39.3% of 509 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 33.3% pooled across Tennessee. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in Maury County.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Monitor
RM-63Pro rechargeable radon monitor with a touchscreen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Maury County, Bordering counties
Counties bordering Maury County
Calculated by Radon411- Radon levels in Giles CountyEPA zone 1
40.7%at or above 4 pCi/L
Median 3.3 pCi/L · 140 tests · 1.4 points above Maury County
- Radon levels in Hickman CountyEPA zone 1
35.0%at or above 4 pCi/L
Median 2.2 pCi/L · 120 tests · 4.3 points below Maury County
- Radon levels in Williamson CountyEPA zone 1
25.8%at or above 4 pCi/L
Median 2.0 pCi/L · 3,414 tests · 13.5 points below Maury County
- Radon levels in Lawrence CountyEPA zone 1
21.3%at or above 4 pCi/L
Median 1.6 pCi/L · 136 tests · 18.0 points below Maury County
- Radon levels in Marshall CountyEPA zone 1
18.1%at or above 4 pCi/L
Median 1.6 pCi/L · 138 tests · 21.2 points below Maury County
- Radon levels in Lewis CountyEPA zone 1
16.1%at or above 4 pCi/L
Median 1.4 pCi/L · 56 tests · 23.2 points below Maury County
Maury County, Cities and towns
Cities and towns in Maury County
Maury County is growing: the Census Bureau puts it at 118,131 residents on July 1, 2025, up 16.0% from 101,812 in 2020. That works out to 193 people per square mile of land. Spring Hill, the largest place on its list (61,336 residents in all), extends beyond Maury County, so no share of the total is worked out for it. CDC's 509 reported tests for 2008 to 2017 work out to 4.3 per 1,000 residents (2025 estimate), close to Tennessee's 4.2.
From Spring Hill to Mount Pleasant, CDC publishes no figure by town: each reads Maury County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Spring Hillextends beyond Maury County | 61,336 | +19.5% | Counted whole |
| Columbia | 50,072 | +19.7% | 42.4% |
| Mount Pleasant | 5,103 | +6.0% | 4.3% |
3 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025). A place that extends beyond Maury County is counted whole, so it has no share.
Maury County, Homes
Homes in Maury County
Of Maury County's 44,841 homes, 72% are detached houses, against 68% across Tennessee; 11% are in buildings of five or more homes. Half of its homes were built before 1993, close to Tennessee's 1986: 17% date from before 1960 and 39% from 2000 or later. 71% of occupied homes are lived in by their owner (Tennessee: 67%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Maury County | Tennessee |
|---|---|---|
| Housing units | 44,841 | 3,095,472 |
| Detached houses | 72% | 68% |
| In buildings of 5 or more | 11% | 14% |
| Mobile homes | 8% | 8% |
| Built before 1960 | 17% | 18% |
| Built since 2000 | 39% | 29% |
| Middle year built | 1993 | 1986 |
| Owner-occupied | 71% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.