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Radon Levels in Cheatham County, Tennessee

EPA puts Cheatham County in Zone 2, its middle radon zone, and only 7 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

    34.1%

    0.8 pts above TN

    Cheatham
    34.1%
    Tennessee
    33.3%

    205 tests, 2008 to 2017

  • Median result

    2.3pCi/L

    Below action level

    Cheatham
    2.3 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    205

    27th of 80 by tests

    Cheatham
    205
    Davidson
    5,592

    Reported to CDC before any fix, 2008 to 2017

  • EPA radon zone

    Zone 2

    Moderate potential

    1. 1
    2. Zone 2
    3. 3

    1 highest, 3 lowest

    EPA predicts 2 to 4 pCi/L indoors

  • Rank in Tennessee

    33 of 80

    Middle half

    Cheatham
    34.1%
    Jefferson
    56.8%

    By share, of 80 with 30+ tests

Read a result for Cheatham County

Starts at Cheatham County's median, 2.3 pCi/L

2.3pCi/L

EPA’s own thresholds; the figures are the area’s, never this home’s.

EPA’s reading of 2.3 pCi/L

Between 2 and 4 pCi/L

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 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. Cheatham County's median reported result, 2008 to 2017.

The data

Cheatham County, At a glance

Cheatham County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Cheatham County is a county: EPA's forecast for it as a whole is an average indoor of 2 to 4 pCi/L (75 to 150 Bq/m³). It describes no single address, and homes above EPA's are found in every zone, this one included.

USGS geologic potential: High across 79% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Cheatham County, 2023

Share of reported tests at or above 4 pCi/L, by year, Cheatham County
Share of reported tests at or above 4 pCi/L, by year, Cheatham County
YearShare of reported tests at or above 4 pCi/L
202222.2%
202328.6%

2023: 28.6%. Across these years the share ran from 22.2% to 28.6%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

Only 7 tests were reported to CDC for Cheatham 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).

How to read these figures

Cheatham County, Compared

Cheatham County radon figures, compared

Calculated by Radon411

In Cheatham County, about 3 in 10 reported tests over the 2008 to 2017 laboratory totals (70 of 205) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 1.6 points lower. Across 95 Tennessee counties pooled together, 33.3% of tests reached that level, so Cheatham County runs 0.8 points above its state.

The newest figure, in 2023, counts only 7 tests (28.6% at or above 4 pCi/L), too few to compare, so this reading uses the 205-test figure.

Of 5 neighbours with a figure, 1 reported a larger share at or above 4 pCi/L and 4 a smaller one; the spread is 25.8% (Williamson County) to 36.4% (Davidson County). By share, Cheatham County is 33rd of 80 Tennessee counties with 30 or more tests for the same period.

Half the tests came in under 2.3 pCi/L and half over it; the single highest reached 26.7 pCi/L. Below the action level, 95 tests (46.3%) came in under 2 pCi/L, against 42.4% statewide, and 40 tests (19.5%) fell between 2 and 4, against 24.3% statewide.

Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 34.1% share point the same way here. USGS geology rates 79% of the county's land high radon potential. CDC also counts 8 tests taken after mitigation in Cheatham County for the same period: tests in homes where a fix was already in.

The busiest year on file was 2022, with 27 tests reported; the quietest, 2023, had 7.

Cheatham County against Tennessee, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Cheatham County
Cheatham County20534.1%2.3 pCi/LThis county
Tennessee, pooled95 counties, pooled31,06633.3%Not pooled−0.8 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+1.6 points
Jefferson Countyhighest in the state14656.8%4.7 pCi/L+22.7 points
Chester Countylowest in the state440.0%1.1 pCi/L−34.1 points
Davidson County, TNborders it5,59236.4%2.6 pCi/L+2.3 points
Montgomery County, TNborders it59733.8%2.3 pCi/L−0.3 points
Robertson County, TNborders it27328.9%1.9 pCi/L−5.2 points
Dickson County, TNborders it20926.3%2.1 pCi/L−7.8 points
Williamson County, TNborders it3,41425.8%2.0 pCi/L−8.3 points
Where Cheatham County's reported results fell, 2008 to 2017, laboratory, beside Tennessee and the United States
ResultCheatham County testsCheatham County shareTennessee shareU.S. shareAgainst Tennessee
Under 2 pCi/L9546.3%42.4%39.6%+3.9 points
2 to 4 pCi/L4019.5%24.3%24.7%−4.8 points
4 pCi/L and above7034.1%33.3%35.7%+0.8 points
Cheatham County ranked among the 80 Tennessee counties with 30 or more tests, by share at or above 4 pCi/L, 2008 to 2017, laboratory
CountyRankTestsAt or above 4 pCi/LMedian
Putnam County28 of 8033636.0%2.6 pCi/L
Moore County29 of 805135.3%2.9 pCi/L
Hickman County30 of 8012035.0%2.2 pCi/L
Clay County31 of 804634.8%2.3 pCi/L
Johnson County32 of 8015734.4%2.3 pCi/L
Cheatham County33 of 8020534.1%2.3 pCi/L
McMinn County34 of 8010634.0%2.8 pCi/L
Montgomery County35 of 8059733.8%2.3 pCi/L
Roane County36 of 8025833.7%2.5 pCi/L
Knox County37 of 802,45233.6%2.5 pCi/L
Benton County38 of 803033.3%2.0 pCi/L
Cheatham County radon tests by year, against Tennessee's pooled share
YearTestsAt or above 4 pCi/LMedianHighestTennessee, pooledChange from the row before
2023728.6%3.3 pCi/L8.7 pCi/L24.9%+6.4 points
20222722.2%1.5 pCi/L5.3 pCi/L23.8%First on file

Pooled shares: Radon411's sum of CDC's county counts for one period.

Cheatham County, Geology

The ground under Cheatham County

Predicted

Most of the ground under Cheatham County is one class on USGS's geologic map: 79.0% of its land is high radon potential, with 21.0% moderate. The map puts 76.0% of Cheatham County in the area it calls Cherty Highland and 21.0% in Highland Rim, with one smaller area beside them. USGS gives the first a radon index of 12, in the high band (12 to 17), and the second 11, in the moderate band (9 to 11).

USGS's geologic areas under Cheatham County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Cherty HighlandCherty dolostone.High1276.0%
Highland RimPaleozoic sedimentary rocks (limestone, shale, chert, and dolostone).Moderate1121.0%
Nashville BasinMississippian Limestone.High143.1%

Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.

Cheatham County beside the ground around it

Cheatham County has more high-potential ground than Tennessee as a whole: 79.0% of its land against 47.2%. Of the 5 counties that border it, 2 have more high-potential ground, Davidson County the most at 100%.

Share of land by USGS radon potential: Cheatham County, the 5 counties bordering it and Tennessee
AreaEPA zoneLow potentialModerate potentialHigh potential
Cheatham CountyZone 2None21.0%79.0%
Davidson CountyZone 1NoneNone100%
Dickson CountyZone 2None73.2%26.8%
Robertson CountyZone 2None96.6%3.4%
Montgomery CountyZone 2None94.9%5.1%
Williamson CountyZone 1None1.8%98.2%
Tennessee95 counties, pooled by land areaVaries30.5%22.3%47.2%

The map rates the ground, not the air in any home.

What it means

Cheatham County, Questions

Questions about radon in Cheatham County

Are radon levels high in Cheatham County?

In 2023, 28.6% of the radon tests reported to CDC for Cheatham County, Tennessee were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.3 pCi/L. Of 80 Tennessee counties with 30 or more tests for the same period, 32 reported a higher share; pooled, the state comes to 33.3%.

Which counties border Cheatham County?

Cheatham County borders 5 counties: Davidson County, Dickson County, Robertson County, Montgomery County and Williamson County.

Products

Cheatham County, Products

Testing a home in Cheatham County

In Cheatham County, 34.1% of 205 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 33.3% pooled across Tennessee. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Cheatham County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Cheatham County homes, compared

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Cheatham County, Bordering counties

Counties bordering Cheatham County

Calculated by Radon411

Cheatham County, Cities and towns

Cities and towns in Cheatham County

The Census Bureau estimates 42,778 residents in Cheatham County for July 1, 2025, 1,690 more than in 2020 (+4.1%). That works out to 141 people per square mile of land. No town dominates: Pleasant View, the largest, has 5,797 residents, 13.6% of the total. Together its 4 incorporated places hold 38.0% of those residents; the other 62.0% live outside any of them. CDC's 205 reported tests for 2008 to 2017 work out to 4.8 per 1,000 residents (2025 estimate), close to Tennessee's 4.2.

From Pleasant View to Pegram, CDC publishes no figure by town: each reads Cheatham County's.

The cities and towns in Cheatham County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Pleasant View5,797+19.0%13.6%
Ashland City5,650+9.0%13.2%
Kingston Springs2,758−2.0%6.4%
Pegram2,036−1.4%4.8%

4 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).

Cheatham County, Homes

Homes in Cheatham County

Cheatham County is a place of houses on their own lots: 80% of its 17,171 homes are detached single-family houses, against 68% across Tennessee. Half of its homes were built before 1991, close to Tennessee's 1986: 13% date from before 1960 and 28% from 2000 or later. Owners live in 82% of the occupied homes (Tennessee: 67%), so for most households a test and a fix are their own to order.

Homes in Cheatham County, Tennessee, 2019 to 2023
HomesCheatham CountyTennessee
Housing units17,1713,095,472
Detached houses80%68%
In buildings of 5 or more5%14%
Mobile homes10%8%
Built before 196013%18%
Built since 200028%29%
Middle year built19911986
Owner-occupied82%67%

Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.