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Radon Levels in Bates County, Missouri

EPA puts Bates County in Zone 2, its middle 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

    45.5%

    Cass County

    Cass
    45.5%
    Vernon
    8.8%

    3 of 6 neighbours have 30+ tests, 2008 to 2017

  • Nearest county

    45.5%

    Cass County, 27 miles

    Cass
    45.5%
    Missouri
    30.6%

    Share at 4+ pCi/L, 988 tests, 2008 to 2017

  • Ground above low

    100.0%

    5.8 pts above Missouri

    Bates
    100.0%
    Missouri
    94.2%

    Share of land USGS rates moderate or high potential

  • Tests reported

    24

    Too few for a share

    Bates
    24
    Needed
    30

    2005 to 2014, laboratory

  • 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

Read a result for Bates 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

Bates County, At a glance

Bates County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Bates 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: Moderate across 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Bates County, 2023

Share of reported tests at or above 4 pCi/L, by year, Bates County
Share of reported tests at or above 4 pCi/L, by year, Bates County
YearShare of reported tests at or above 4 pCi/L
20140.0%
20160.0%
20180.0%
20190.0%
20210.0%
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 Bates 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

Bates County, Compared

Bates County radon figures, compared

Calculated by Radon411

CDC's largest figure for Bates County rests on 24 tests over the 2005 to 2014 laboratory totals, 10 of them at or above 4 pCi/L, so each test moves its share by 4.2 points and no rank or comparison is drawn from it. Results reached as high as 7.3 pCi/L, with a middle value of 3.3 pCi/L.

Of the counties bordering it, 3 have a figure over the 2008 to 2017 laboratory totals: Cass County reported the largest share at or above 4 pCi/L, 45.5%, and Vernon County the smallest, 8.8%, with Henry County at 38.3% between. Farther out, Johnson County (44 miles away) at 25.8%, Jackson County (52 miles away) at 41.3% and Benton County (57 miles away) at 30.6% have figures too. Pooled across 115 Missouri counties, 30.6% of reported tests reached that level; across every county in the country with a figure, 35.7%.

Statewide for the same period, Atchison County reported the highest share (69.9%) and Vernon County the lowest (8.8%). EPA's 1993 map puts Bates County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.

Missouri, the United States and the counties around Bates County, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedian
Missouri, pooled115 counties, pooled58,52530.6%Not pooled
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled
Atchison Countyhighest in the state10369.9%5.6 pCi/L
Polk Countylowest in the state7811.5%1.6 pCi/L
Cass County, MOborders it98845.5%3.5 pCi/L
Henry County, MOborders it8138.3%3.4 pCi/L
Vernon County, MOborders it348.8%0.9 pCi/L
St. Clair County, MOborders it137.7%1.5 pCi/L
The nearest Missouri counties to Bates County with 30 or more tests, 2008 to 2017, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Cass County27 mi98845.5%3.5 pCi/L
Vernon County28 mi348.8%0.9 pCi/L
Henry County31 mi8138.3%3.4 pCi/L
Johnson County44 mi26425.8%1.9 pCi/L
Jackson County52 mi6,61841.3%3.1 pCi/L
Benton County57 mi4930.6%2.0 pCi/L
Lafayette County63 mi18446.7%3.5 pCi/L
Pettis County66 mi13237.9%2.8 pCi/L
Bates County radon tests by year, against Missouri's pooled share
YearTestsAt or above 4 pCi/LMedianHighestMissouri, pooledChange from the row before
202320.0%1.8 pCi/L2.5 pCi/L35.7%Level
202220.0%1.4 pCi/L1.4 pCi/L40.8%Level
202120.0%2.0 pCi/L2.6 pCi/L31.8%Level
201920.0%2.5 pCi/L3.3 pCi/L33.5%Level
201840.0%2.2 pCi/L3.7 pCi/L42.1%Level
201610.0%1.5 pCi/L1.5 pCi/L29.8%Level
201410.0%0.6 pCi/L0.6 pCi/L34.4%First on file

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

Bates County, Geology

The ground under Bates County

Predicted

Most of the ground under Bates County is one class on USGS's geologic map: 99.7% of its land is moderate radon potential, with 0.3% high. All of it lies in the area the map calls Osage Plains, to which USGS gives a radon index of 11, in the moderate band (9 to 11).

USGS's geologic areas under Bates County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Osage PlainsOrdovician dolomite, sandstone, limestone, and shale.Moderate1199.6%

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

Bates County beside the ground around it

On high-potential ground Bates County is close to Missouri as a whole: 0.3% of its land against 8.2%. Of the 6 counties that border it, 2 have more high-potential ground, Cass County the most at 35.5%.

Share of land by USGS radon potential: Bates County, the 6 counties bordering it and Missouri
AreaEPA zoneLow potentialModerate potentialHigh potential
Bates CountyZone 2None99.7%0.3%
Cass CountyZone 1None64.5%35.5%
Linn County, KSZone 2None100%None
Henry CountyZone 2None100%None
Vernon CountyZone 2None100%None
Miami County, KSZone 2None68.6%31.4%
St. Clair CountyZone 2None100%None
Missouri115 counties, pooled by land areaVaries5.8%86.0%8.2%

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

What it means

Bates County, Questions

Questions about radon in Bates County

Are radon levels high in Bates County?

In 2023, 0.0% of the radon tests reported to CDC for Bates County, Missouri were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.8 pCi/L. Of the counties bordering it, 3 have a figure over the 2008 to 2017 laboratory totals: Cass County reported the largest share at or above 4 pCi/L, 45.5%, and Vernon County the smallest, 8.8%, with Henry County at 38.3% between.

Which counties border Bates County?

Bates County borders 6 counties: Cass County, MO, Linn County, KS, Henry County, MO, Vernon County, MO, Miami County, KS and St. Clair County, MO.

Products

Bates County, Products

Testing a home in Bates County

No CDC figure names Bates County; the nearest county with one, Cass County (27 miles away), reported 45.5% 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 2 a short-term kit (2 to 90 days) is the quick first check in Bates County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Bates County homes, compared

Explore

Bates County, Bordering counties

Counties bordering Bates County

Calculated by Radon411

Bates County, Cities and towns

Cities and towns in Bates County

The Census Bureau estimates 16,512 residents in Bates County for July 1, 2025, 460 more than in 2020 (+2.9%). That works out to 20 people per square mile of land. Its largest town, Butler, has 4,317 residents, 26.1% of the total. Reported testing is thin here: 24 tests over 2005 to 2014, or 1.5 for every 1,000 residents (2025 estimate), where Missouri as a whole comes to 6.8.

From Butler to Passaic, CDC publishes no figure by town: each reads Bates County's.

The cities and towns in Bates County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Butler4,317+2.2%26.1%
Adrian1,798+4.1%10.9%
Rich Hill1,264+2.9%7.7%
Drexelextends beyond Bates County982+1.6%Counted whole
Hume290+2.8%1.8%
Amsterdam225+2.7%1.4%
Rockville141+2.9%0.9%
Amoret134+3.1%0.8%
Foster80+2.6%0.5%
Merwin70+2.9%0.4%
Passaic29+11.5%0.2%

11 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 Bates County is counted whole, so it has no share.

Bates County, Homes

Homes in Bates County

Bates County is a place of houses on their own lots: 77% of its 7,192 homes are detached single-family houses, against 70% across Missouri. Half of its homes were built before 1977, close to Missouri's 1978: 31% date from before 1960 and 16% from 2000 or later. 72% of occupied homes are lived in by their owner (Missouri: 68%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Bates County, Missouri, 2019 to 2023
HomesBates CountyMissouri
Housing units7,1922,809,501
Detached houses77%70%
In buildings of 5 or more2%13%
Mobile homes13%5%
Built before 196031%28%
Built since 200016%21%
Middle year built19771978
Owner-occupied72%68%

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