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Radon Levels in Bath County, Kentucky

EPA puts Bath County in Zone 2, its middle radon zone, and only 12 radon tests from it are on file with CDC (2008 to 2017, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

  • Highest bordering

    53.5%

    Bourbon County

    Bourbon
    53.5%
    Rowan
    18.9%

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

  • Nearest county

    51.4%

    Montgomery County, 12 miles

    Montgomery
    51.4%
    Kentucky
    43.7%

    Share at 4+ pCi/L, 105 tests, 2008 to 2017

  • Ground above low

    100.0%

    5.7 pts above Kentucky

    Bath
    100.0%
    Kentucky
    94.3%

    Share of land USGS rates moderate or high potential

  • Tests reported

    12

    Too few for a share

    Bath
    12
    Needed
    30

    2008 to 2017, 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 Bath 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

Bath County, At a glance

Bath County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Bath 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 65% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

CDC holds 12 reported tests for Bath County over the 2008 to 2017 laboratory totals, with a median of 3.1 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Bath County beside the counties around it is how this page reads it.

What these figures count

Only 12 tests were reported to CDC for Bath County over 2008 to 2017 (laboratory totals), 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: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).

How to read these figures

Bath County, Compared

Bath County radon figures, compared

Calculated by Radon411

CDC's largest figure for Bath County rests on 12 tests over the 2008 to 2017 laboratory totals, 5 of them at or above 4 pCi/L, so each test moves its share by 8.3 points and no rank or comparison is drawn from it. Results reached as high as 16.7 pCi/L, with a middle value of 3.1 pCi/L.

Of the counties bordering it, 4 have a figure over the 2008 to 2017 laboratory totals: Bourbon County reported the largest share at or above 4 pCi/L, 53.5%, and Rowan County the smallest, 18.9%, with Montgomery County at 51.4% and Menifee County at 22.0% between. Farther out, Clark County (25 miles away) at 29.0%, Mason County (31 miles away) at 25.0% and Estill County (33 miles away) at 44.1% have figures too. Pooled across 120 Kentucky counties, 43.7% of reported tests reached that level; across every county in the country with a figure, 35.7%.

Statewide for the same period, Meade County reported the highest share (68.4%) and Hopkins County the lowest (9.5%). EPA's 1993 map puts Bath County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 65% of the county's land moderate radon potential.

Kentucky, the United States and the counties around Bath County, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedian
Kentucky, pooled120 counties, pooled28,79343.7%Not pooled
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled
Meade Countyhighest in the state11768.4%8.2 pCi/L
Hopkins Countylowest in the state429.5%1.7 pCi/L
Bourbon County, KYborders it12753.5%4.8 pCi/L
Montgomery County, KYborders it10551.4%4.1 pCi/L
Fleming County, KYborders it2236.4%2.9 pCi/L
Menifee County, KYborders it4122.0%1.4 pCi/L
Rowan County, KYborders it7418.9%1.6 pCi/L
Nicholas County, KYborders it2010.0%1.9 pCi/L
The nearest Kentucky counties to Bath County with 30 or more tests, 2008 to 2017, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Montgomery County12 mi10551.4%4.1 pCi/L
Menifee County16 mi4122.0%1.4 pCi/L
Rowan County18 mi7418.9%1.6 pCi/L
Clark County25 mi23129.0%2.4 pCi/L
Bourbon County26 mi12753.5%4.8 pCi/L
Mason County31 mi3225.0%2.6 pCi/L
Estill County33 mi17744.1%3.2 pCi/L
Harrison County38 mi11146.8%3.4 pCi/L
Bath County ten-year laboratory totals, against Kentucky's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestKentucky, pooledChange from the row before
2008 to 20171241.7%3.1 pCi/L16.7 pCi/L43.7%−12.8 points
2007 to 20161154.5%5.3 pCi/L16.7 pCi/L45.1%−9.1 points
2006 to 20151163.6%5.6 pCi/L16.7 pCi/L46.4%+8.0 points
2005 to 2014955.6%5.3 pCi/L16.7 pCi/L47.3%First on file

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

Bath County, Geology

The ground under Bath County

Predicted

USGS's geologic map splits Bath County: 64.6% of its land is moderate radon potential and 35.4% high. The map puts 45.8% of Bath County in the area it calls Outer Bluegrass and 35.4% in New Albany-Chattanooga Shale, with one smaller area beside them. USGS gives the first a radon index of 11, in the moderate band (9 to 11), and the second 14, in the high band (12 to 17).

USGS's geologic areas under Bath County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Outer BluegrassOrdovician-Devonian limestone and shale.Moderate1145.8%
New Albany-Chattanooga ShaleDevonian/Mississippian Black shale.High1435.4%
Mississippian PlateauMississippian marine limestones, dolomites, marine sandstones, siltstones, and shales.Moderate1118.9%

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

Bath County beside the ground around it

Bath County has more high-potential ground than Kentucky as a whole: 35.4% of its land against 18.2%. Of the 6 counties that border it, 3 have more high-potential ground, Fleming County the most at 45.0%.

Share of land by USGS radon potential: Bath County, the 6 counties bordering it and Kentucky
AreaEPA zoneLow potentialModerate potentialHigh potential
Bath CountyZone 2None64.6%35.4%
Montgomery CountyZone 2None61.3%38.7%
Fleming CountyZone 2None55.0%45.0%
Menifee CountyZone 2None100%None
Rowan CountyZone 2None89.2%10.8%
Nicholas CountyZone 2None97.3%2.7%
Bourbon CountyZone 1None55.9%44.1%
Kentucky120 counties, pooled by land areaVaries5.7%76.1%18.2%

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

What it means

Bath County, Questions

Questions about radon in Bath County

Are radon levels high in Bath County?

Over the 2008 to 2017 laboratory totals, 41.7% of the radon tests reported to CDC for Bath County, Kentucky were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.1 pCi/L. Of the counties bordering it, 4 have a figure over the 2008 to 2017 laboratory totals: Bourbon County reported the largest share at or above 4 pCi/L, 53.5%, and Rowan County the smallest, 18.9%, with Montgomery County at 51.4% and Menifee County at 22.0% between.

Which counties border Bath County?

Bath County borders 6 counties: Montgomery County, Fleming County, Menifee County, Rowan County, Nicholas County and Bourbon County.

Products

Bath County, Products

Testing a home in Bath County

No CDC figure names Bath County; the nearest county with one, Montgomery County (12 miles away), reported 51.4% 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 Bath County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Bath County homes, compared

Explore

Bath County, Bordering counties

Counties bordering Bath County

Calculated by Radon411

Bath County, Cities and towns

Cities and towns in Bath County

The Census Bureau estimates 13,176 residents in Bath County for July 1, 2025, 461 more than in 2020 (+3.6%). That works out to 47 people per square mile of land. No town dominates: Owingsville, the largest, has 1,612 residents, 12.2% of the total. Together its 3 incorporated places hold 17.0% of those residents; the other 83.0% live outside any of them. Reported testing is thin here: 12 tests over 2008 to 2017, or 0.9 for every 1,000 residents (2025 estimate), where Kentucky as a whole comes to 6.3.

From Owingsville to Salt Lick, CDC publishes no figure by town: each reads Bath County's.

The cities and towns in Bath County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Owingsville1,612+1.5%12.2%
Sharpsburg369+1.7%2.8%
Salt Lick255+2.8%1.9%

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).

Bath County, Homes

Homes in Bath County

Of Bath County's 5,479 homes, 62% are detached houses, against 68% across Kentucky; 32% are mobile homes. Half of its homes were built before 1986, close to Kentucky's 1982: 20% date from before 1960 and 25% from 2000 or later. 73% of occupied homes are lived in by their owner (Kentucky: 68%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Bath County, Kentucky, 2019 to 2023
HomesBath CountyKentucky
Housing units5,4792,010,655
Detached houses62%68%
In buildings of 5 or more4%12%
Mobile homes32%11%
Built before 196020%22%
Built since 200025%24%
Middle year built19861982
Owner-occupied73%68%

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