Skip to content

Locations and reports

Radon Levels in Moore County, Tennessee

EPA puts Moore County in Zone 1, its highest radon zone, and 35.3% of its 51 reported radon tests (2008 to 2017, laboratory totals) were at or above 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

  • Share at 4+ pCi/L

    35.3%

    2.0 pts above TN

    Moore
    35.3%
    Tennessee
    33.3%

    51 tests, 2008 to 2017

  • Median result

    2.9pCi/L

    Below action level

    Moore
    2.9 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    51

    64th of 80 by tests

    Moore
    51
    Davidson
    5,592

    Reported to CDC before any fix, 2008 to 2017

  • EPA radon zone

    Zone 1

    Highest potential

    1. Zone 1
    2. 2
    3. 3

    1 highest, 3 lowest

    EPA predicts over 4 pCi/L indoors

  • Rank in Tennessee

    29 of 80

    Middle half

    Moore
    35.3%
    Jefferson
    56.8%

    By share, of 80 with 30+ tests

Read a result for Moore County

Starts at Moore County's median, 2.9 pCi/L

2.9pCi/L

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

EPA’s reading of 2.9 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. Moore County's median reported result, 2008 to 2017.

The data

Moore County, At a glance

Moore County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Moore County in and predicts an average indoor of greater than 4 pCi/L (greater than 150 Bq/m³) across the county. That is one forecast for the whole county, not a reading of any address in it; homes above EPA's turn up in all three zones.

USGS geologic potential: High across 71% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Moore County, 2008 to 2017, laboratory

Reported results by concentration band, Moore County, 2008 to 2017, laboratory
Under 2 pCi/L: 35%2 to 4 pCi/L: 30%4 pCi/L and above: 35%

Of 51 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Moore County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L1835.3%
2 to 4 pCi/L1529.4%
4 pCi/L and above1835.3%
What these figures count

These are the 51 tests reported to CDC for Moore County over 2008 to 2017 (laboratory totals), many from homes being sold or already suspected of a problem: they describe the county's reported tests, not this house.

Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).

How to read these figures

Moore County, Compared

Moore County radon figures, compared

Calculated by Radon411

In Moore County, about 4 in 10 reported tests over the 2008 to 2017 laboratory totals (18 of 51) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 0.4 points lower. Across 95 Tennessee counties pooled together, 33.3% of tests reached that level, so Moore County runs 2.0 points above its state.

Of 4 neighbours with a figure, none reported a larger share at or above 4 pCi/L; the spread is 16.5% (Coffee County) to 25.6% (Franklin County). By share, Moore County is 29th of 80 Tennessee counties with 30 or more tests for the same period.

Half the tests came in under 2.9 pCi/L and half over it; the single highest reached 19.8 pCi/L. Below the action level, 18 tests (35.3%) came in under 2 pCi/L, against 42.4% statewide, and 15 tests (29.4%) fell between 2 and 4, against 24.3% statewide.

Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 35.3% share point the same way here. USGS geology rates 71% of the county's land high radon potential.

CDC's ten-year totals for Moore County went from 54 tests (2005 to 2014) to 51 (2008 to 2017), the share going from 35.2% to 35.3%.

Moore County against Tennessee, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Moore County
Moore County5135.3%2.9 pCi/LThis county
Tennessee, pooled95 counties, pooled31,06633.3%Not pooled−2.0 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+0.4 points
Jefferson Countyhighest in the state14656.8%4.7 pCi/L+21.5 points
Chester Countylowest in the state440.0%1.1 pCi/L−35.3 points
Franklin County, TNborders it26625.6%2.1 pCi/L−9.7 points
Bedford County, TNborders it12421.0%1.8 pCi/L−14.3 points
Lincoln County, TNborders it14920.8%1.9 pCi/L−14.5 points
Coffee County, TNborders it20616.5%1.3 pCi/L−18.8 points
Where Moore County's reported results fell, 2008 to 2017, laboratory, beside Tennessee and the United States
ResultMoore County testsMoore County shareTennessee shareU.S. shareAgainst Tennessee
Under 2 pCi/L1835.3%42.4%39.6%−7.1 points
2 to 4 pCi/L1529.4%24.3%24.7%+5.1 points
4 pCi/L and above1835.3%33.3%35.7%+2.0 points
Moore 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
Union County24 of 805337.7%2.1 pCi/L
Unicoi County25 of 8013237.1%2.8 pCi/L
Warren County26 of 8014936.9%3.0 pCi/L
Davidson County27 of 805,59236.4%2.6 pCi/L
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
Moore County ten-year laboratory totals, against Tennessee's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestTennessee, pooledChange from the row before
2008 to 20175135.3%2.9 pCi/L19.8 pCi/L33.3%+0.1 points
2007 to 20165435.2%3.0 pCi/L19.4 pCi/L33.4%−0.6 points
2006 to 20155335.8%3.1 pCi/L19.4 pCi/L33.4%+0.6 points
2005 to 20145435.2%3.0 pCi/L19.4 pCi/L33.2%First on file

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

Moore County, Geology

The ground under Moore County

Predicted

USGS's geologic map splits Moore County: 71.0% of its land is high radon potential and 29.0% moderate. The map puts 71.0% of Moore County in the area it calls Nashville Basin and 29.0% in Highland Rim. USGS gives the first a radon index of 14, in the high band (12 to 17), and the second 11, in the moderate band (9 to 11).

USGS's geologic areas under Moore County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Nashville BasinMississippian Limestone.High1471.0%
Highland RimPaleozoic sedimentary rocks (limestone, shale, chert, and dolostone).Moderate1129.0%

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

Moore County beside the ground around it

Moore County has more high-potential ground than Tennessee as a whole: 71.0% of its land against 47.2%. Of the 4 counties that border it, 1 has more high-potential ground, Bedford County the most at 97.8%.

Share of land by USGS radon potential: Moore County, the 4 counties bordering it and Tennessee
AreaEPA zoneLow potentialModerate potentialHigh potential
Moore CountyZone 1None29.0%71.0%
Lincoln CountyZone 1None29.8%70.2%
Franklin CountyZone 38.2%86.0%5.8%
Bedford CountyZone 1None2.2%97.8%
Coffee CountyZone 2None87.8%12.2%
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

Moore County, Questions

Questions about radon in Moore County

Are radon levels high in Moore County?

Over the 2008 to 2017 laboratory totals, 35.3% of the radon tests reported to CDC for Moore County, Tennessee were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.9 pCi/L. Of 80 Tennessee counties with 30 or more tests for the same period, 28 reported a higher share; pooled, the state comes to 33.3%.

Which counties border Moore County?

Moore County borders 4 counties: Lincoln County, Franklin County, Bedford County and Coffee County.

Products

Moore County, Products

Testing a home in Moore County

In Moore County, 35.3% of 51 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 33.3% pooled across Tennessee. In Zone 1 the year-round level in Moore County is the one to know: a long-term test (more than 90 days) or a monitor, with a short-term kit for a first answer.

Test kits and monitors3

See every kit and monitor

Moore County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Moore County

Explore

Moore County, Bordering counties

Counties bordering Moore County

Calculated by Radon411

Moore County, Cities and towns

Cities and towns in Moore County

Moore County is growing: the Census Bureau puts it at 6,920 residents on July 1, 2025, up 6.9% from 6,472 in 2020. That works out to 54 people per square mile of land. Lynchburg, Moore County, its one incorporated place, has 6,920 residents, 100.0% of the total. Testing is reported here more often than across the state: CDC's 51 reported tests for 2008 to 2017 come to 7.4 for every 1,000 residents (2025 estimate), against 4.2 for Tennessee.

Lynchburg, Moore County is the one incorporated place here; CDC publishes no figure by town, so it reads Moore County's.

Lynchburg, Moore County, Moore County: residents on July 1, 2025
PlaceResidentsSince 2020Share of residents
Lynchburg, Moore County6,920+6.9%100.0%

One incorporated place, 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).

Moore County, Homes

Homes in Moore County

Moore County is a place of houses on their own lots: 82% of its 2,996 homes are detached single-family houses, against 68% across Tennessee. Half of its homes were built before 1990, close to Tennessee's 1986: 15% date from before 1960 and 30% 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 Moore County, Tennessee, 2019 to 2023
HomesMoore CountyTennessee
Housing units2,9963,095,472
Detached houses82%68%
In buildings of 5 or more4%14%
Mobile homes14%8%
Built before 196015%18%
Built since 200030%29%
Middle year built19901986
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.