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Radon Levels in Meigs County, Tennessee

EPA puts Meigs County in Zone 1, its highest radon zone, and only 2 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

  • Highest bordering

    34.0%

    McMinn County

    McMinn
    34.0%
    Hamilton
    19.3%

    5 of 5 neighbours have 30+ tests, 2008 to 2017

  • Nearest county

    26.7%

    Rhea County, 9 miles

    Rhea
    26.7%
    Tennessee
    33.3%

    Share at 4+ pCi/L, 45 tests, 2008 to 2017

  • Ground above low

    100.0%

    30.5 pts above Tennessee

    Meigs
    100.0%
    Tennessee
    69.5%

    Share of land USGS rates moderate or high potential

  • Tests reported

    29

    Too few for a share

    Meigs
    29
    Needed
    30

    2008 to 2017, laboratory

  • 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

Read a result for Meigs County

Starts at EPA's action level

4.0pCi/L

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

EPA’s reading of 4.0 pCi/L

At or above 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 at or above 4 pCi/L. EPA recommends fixing a home when the radon level is 4 pCi/L or higher.

The data

Meigs County, At a glance

Meigs County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Meigs 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 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Meigs County, 2023

Share of reported tests at or above 4 pCi/L, by year, Meigs County
Share of reported tests at or above 4 pCi/L, by year, Meigs County
YearShare of reported tests at or above 4 pCi/L
20220.0%
20230.0%

2023: 0.0%. Across these years the share ran from 0.0% to 0.0%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

Only 2 tests were reported to CDC for Meigs 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

Meigs County, Compared

Meigs County radon figures, compared

Calculated by Radon411

CDC's largest figure for Meigs County rests on 29 tests over the 2008 to 2017 laboratory totals, 10 of them at or above 4 pCi/L, so each test moves its share by 3.4 points and no rank or comparison is drawn from it. Results reached as high as 39.9 pCi/L, with a middle value of 2.5 pCi/L.

Of the counties bordering it, 5 have a figure over the 2008 to 2017 laboratory totals: McMinn County reported the largest share at or above 4 pCi/L, 34.0%, and Hamilton County the smallest, 19.3%, with Roane County at 33.7%, Rhea County at 26.7% and Bradley County at 20.9% between. Farther out, Bledsoe County (23 miles away) at 24.3%, Polk County (32 miles away) at 27.9% and Cumberland County (32 miles away) at 8.7% have figures too. Pooled across 95 Tennessee counties, 33.3% of reported tests reached that level; across every county in the country with a figure, 35.7%.

Statewide for the same period, Jefferson County reported the highest share (56.8%) and Chester County the lowest (0.0%). EPA's 1993 map puts Meigs County in Zone 1, the map's highest label: a predicted county average above 4 pCi/L. USGS geology rates 100% of the county's land high radon potential.

Tennessee, the United States and the counties around Meigs County, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedian
Tennessee, pooled95 counties, pooled31,06633.3%Not pooled
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled
Jefferson Countyhighest in the state14656.8%4.7 pCi/L
Chester Countylowest in the state440.0%1.1 pCi/L
McMinn County, TNborders it10634.0%2.8 pCi/L
Roane County, TNborders it25833.7%2.5 pCi/L
Rhea County, TNborders it4526.7%2.4 pCi/L
Bradley County, TNborders it42520.9%1.9 pCi/L
Hamilton County, TNborders it1,14819.3%1.7 pCi/L
The nearest Tennessee counties to Meigs County with 30 or more tests, 2008 to 2017, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Rhea County9 mi4526.7%2.4 pCi/L
McMinn County13 mi10634.0%2.8 pCi/L
Bledsoe County23 mi3724.3%2.1 pCi/L
Bradley County25 mi42520.9%1.9 pCi/L
Roane County28 mi25833.7%2.5 pCi/L
Hamilton County30 mi1,14819.3%1.7 pCi/L
Polk County32 mi4327.9%2.2 pCi/L
Cumberland County32 mi1728.7%1.3 pCi/L
Meigs County radon tests by year, against Tennessee's pooled share
YearTestsAt or above 4 pCi/LMedianHighestTennessee, pooledChange from the row before
202320.0%1.3 pCi/L1.9 pCi/L24.9%Level
202230.0%2.7 pCi/L2.7 pCi/L23.8%First on file

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

Meigs County, Geology

The ground under Meigs County

Predicted

USGS's geologic map puts all of Meigs County's mapped land in one class: high radon potential. All of it lies in the area the map calls Ridge and Valley, to which USGS gives a radon index of 14, in the high band (12 to 17).

USGS's geologic areas under Meigs County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Ridge and ValleyPaleozoic sandstone and cherty dolostone.High14100%

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

Meigs County beside the ground around it

Meigs County has more high-potential ground than Tennessee as a whole: 100% of its land against 47.2%. Of the 5 counties that border it, none has as large a share of high-potential ground; McMinn County comes nearest at 100%.

Share of land by USGS radon potential: Meigs County, the 5 counties bordering it and Tennessee
AreaEPA zoneLow potentialModerate potentialHigh potential
Meigs CountyZone 1NoneNone100%
Rhea CountyZone 338.6%None61.4%
McMinn CountyZone 1NoneNone100%
Bradley CountyZone 10.3%None99.7%
Roane CountyZone 12.7%None97.3%
Hamilton CountyZone 220.4%None79.6%
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

Meigs County, Questions

Questions about radon in Meigs County

Are radon levels high in Meigs County?

In 2023, 0.0% of the radon tests reported to CDC for Meigs County, Tennessee were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.3 pCi/L. Of the counties bordering it, 5 have a figure over the 2008 to 2017 laboratory totals: McMinn County reported the largest share at or above 4 pCi/L, 34.0%, and Hamilton County the smallest, 19.3%, with Roane County at 33.7%, Rhea County at 26.7% and Bradley County at 20.9% between.

Which counties border Meigs County?

Meigs County borders 5 counties: Rhea County, McMinn County, Bradley County, Roane County and Hamilton County.

Products

Meigs County, Products

Testing a home in Meigs County

No CDC figure names Meigs County; the nearest county with one, Rhea County (9 miles away), reported 26.7% of its tests at or above 4 pCi/L over the 2008 to 2017 laboratory totals, the only reading nearby until a test of this home. In Zone 1 the year-round level in Meigs 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

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

Explore

Meigs County, Bordering counties

Counties bordering Meigs County

Calculated by Radon411

Meigs County, Cities and towns

Cities and towns in Meigs County

Meigs County is growing: the Census Bureau puts it at 14,186 residents on July 1, 2025, up 10.8% from 12,808 in 2020. That works out to 73 people per square mile of land. Decatur, its one incorporated place, has 1,637 residents, 11.5% of the total. Reported testing is thin here: 29 tests over 2008 to 2017, or 2.0 for every 1,000 residents (2025 estimate), where Tennessee as a whole comes to 4.2.

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

Decatur, Meigs County: residents on July 1, 2025
PlaceResidentsSince 2020Share of residents
Decatur1,637+4.2%11.5%

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).

Meigs County, Homes

Homes in Meigs County

Of Meigs County's 6,164 homes, 64% are detached houses, against 68% across Tennessee; 34% are mobile homes. Half of its homes were built before 1993, close to Tennessee's 1986: 8% date from before 1960 and 33% from 2000 or later. Owners live in 77% of the occupied homes (Tennessee: 67%), so for most households a test and a fix are their own to order.

Homes in Meigs County, Tennessee, 2019 to 2023
HomesMeigs CountyTennessee
Housing units6,1643,095,472
Detached houses64%68%
In buildings of 5 or more1%14%
Mobile homes34%8%
Built before 19608%18%
Built since 200033%29%
Middle year built19931986
Owner-occupied77%67%

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