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Radon Levels in Fountain County, Indiana

EPA puts Fountain County in Zone 1, its highest radon zone, and high results are common there: 55.0% of the 60 radon tests reported to CDC (2008 to 2017, laboratory totals) came back 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

How to test this homeFind a certified tester

  • Share at 4+ pCi/L

    55.0%

    16.1 pts above IN

    Fountain
    55.0%
    Indiana
    38.9%

    60 tests, 2008 to 2017

  • Median result

    4.6pCi/L

    Action level reached

    Fountain
    4.6 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    60

    59th of 69 by tests

    Fountain
    60
    St. Joseph
    7,346

    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 Indiana

    12 of 69

    Top quarter

    Fountain
    55.0%
    Miami
    63.3%

    By share, of 69 with 30+ tests

Read a result for Fountain County

Starts at Fountain County's median, 4.6 pCi/L

4.6pCi/L

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

EPA’s reading of 4.6 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. Fountain County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Fountain County, At a glance

Fountain County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Fountain 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 95% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

Reported results by concentration band, Fountain County, 2008 to 2017, laboratory
Under 2 pCi/L: 33%2 to 4 pCi/L: 12%4 pCi/L and above: 55%

Of 60 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Fountain County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L2033.3%
2 to 4 pCi/L711.7%
4 pCi/L and above3355.0%
What these figures count

These are the 60 tests reported to CDC for Fountain 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

Fountain County, Compared

Fountain County radon figures, compared

Calculated by Radon411

More than half: 55.0% of the 60 radon tests reported to CDC for Fountain County over the 2008 to 2017 laboratory totals read at least 4 pCi/L. That places it 12th of 69 Indiana counties with 30 or more tests for the same period. That is 16.1 points above the 38.9% pooled from 92 Indiana counties.

The median result, 4.6 pCi/L, sits above EPA's 4 pCi/L action level, and the top reported result was 59.8 pCi/L. The rest split 33.3% under 2 pCi/L and 11.7% from 2 to 4 (Indiana: 32.8% and 28.3%). Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 55.0% share point the same way here.

No bordering county with a figure for the same period reported a higher share; the closest is Montgomery County at 41.4%, the lowest Tippecanoe County at 36.8%. Statewide for the same period, Miami County reported the highest share (63.3%) and Jasper County the lowest (14.1%).

CDC's ten-year totals for Fountain County went from 47 tests (2005 to 2014) to 60 (2008 to 2017), the share going from 59.6% to 55.0%.

Nationally, every county with a figure for the same period pools to 35.7%; Fountain County sits 19.3 points above it.

Fountain County against Indiana, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Fountain County
Fountain County6055.0%4.6 pCi/LThis county
Indiana, pooled92 counties, pooled43,14838.9%Not pooled−16.1 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled−19.3 points
Miami Countyhighest in the state3063.3%5.3 pCi/L+8.3 points
Jasper Countylowest in the state7114.1%1.2 pCi/L−40.9 points
Parke County, INborders it2568.0%4.8 pCi/L+13.0 points
Vermillion County, INborders it2441.7%3.3 pCi/L−13.3 points
Montgomery County, INborders it15241.4%2.9 pCi/L−13.6 points
Tippecanoe County, INborders it1,21836.8%2.7 pCi/L−18.2 points
Warren County, INborders it2733.3%3.5 pCi/L−21.7 points
Where Fountain County's reported results fell, 2008 to 2017, laboratory, beside Indiana and the United States
ResultFountain County testsFountain County shareIndiana shareU.S. shareAgainst Indiana
Under 2 pCi/L2033.3%32.8%39.6%+0.5 points
2 to 4 pCi/L711.7%28.3%24.7%−16.6 points
4 pCi/L and above3355.0%38.9%35.7%+16.1 points
Fountain County ranked among the 69 Indiana counties with 30 or more tests, by share at or above 4 pCi/L, 2008 to 2017, laboratory
CountyRankTestsAt or above 4 pCi/LMedian
LaPorte County7 of 6979258.2%5.0 pCi/L
DeKalb County8 of 6924256.6%4.4 pCi/L
Wayne County9 of 6914056.4%4.5 pCi/L
Steuben County10 of 6914055.7%4.5 pCi/L
Delaware County11 of 6918755.1%4.2 pCi/L
Fountain County12 of 696055.0%4.6 pCi/L
Noble County13 of 6913652.9%4.3 pCi/L
Whitley County14 of 6918451.6%4.0 pCi/L
Kosciusko County15 of 691,24850.6%4.0 pCi/L
Henry County16 of 699550.5%4.0 pCi/L
Shelby County17 of 698450.0%4.0 pCi/L
Fountain County ten-year laboratory totals, against Indiana's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestIndiana, pooledChange from the row before
2008 to 20176055.0%4.6 pCi/L59.8 pCi/L38.9%+3.2 points
2007 to 20165651.8%4.1 pCi/L59.8 pCi/L39.2%+0.9 points
2006 to 20155550.9%4.1 pCi/L116.6 pCi/L39.6%−8.7 points
2005 to 20144759.6%4.8 pCi/L116.6 pCi/L39.3%First on file

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

Fountain County, Geology

The ground under Fountain County

Predicted

Most of the ground under Fountain County is one class on USGS's geologic map: 95.0% of its land is high radon potential, with 5.0% moderate. The map puts 95.0% of Fountain County in the area it calls Huron-Erie Lobe and 5.0% in Wabash Lowland. USGS gives the first a radon index of 13, in the high band (12 to 17), and the second 10, in the moderate band (9 to 11).

USGS's geologic areas under Fountain County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Huron-Erie LobeCalcareous clayey and loamy glacial deposits derived from marine carbonate and clastic sedimentary rocks.High1395.0%
Wabash LowlandLoess, pre-Wisconsinan glacial deposits, Pennsylvanian shale, sandstone, and carbonate bedrock.Moderate105.0%

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

Fountain County beside the ground around it

Fountain County has more high-potential ground than Indiana as a whole: 95.0% of its land against 56.6%. Of the 5 counties that border it, 3 have more high-potential ground, Tippecanoe County the most at 100%.

Share of land by USGS radon potential: Fountain County, the 5 counties bordering it and Indiana
AreaEPA zoneLow potentialModerate potentialHigh potential
Fountain CountyZone 1None5.0%95.0%
Warren CountyZone 1NoneNone100%
Montgomery CountyZone 1None5.9%94.1%
Vermillion CountyZone 1None1.0%99.0%
Tippecanoe CountyZone 1NoneNone100%
Parke CountyZone 2None72.8%27.2%
Indiana92 counties, pooled by land areaVariesNone43.4%56.6%

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

Local help

Fountain County, Local resources

Radon testing and mitigation in Fountain County

What Indiana's program says
Phone
1-800-272-9723
Licensing of radon professionals
According to the Indiana Radon Rule, 410 IAC 5.1, everyone who is serving Indiana by doing radon testing, analysis and mitigation (radon reduction) in residential structures must be certified by the Indiana State Department of Health.

What it means

Fountain County, Questions

Questions about radon in Fountain County

Are radon levels high in Fountain County?

Over the 2008 to 2017 laboratory totals, 55.0% of the radon tests reported to CDC for Fountain County, Indiana were at or above 4 pCi/L, and the median reported pre-mitigation result was 4.6 pCi/L. Of 69 Indiana counties with 30 or more tests for the same period, 11 reported a higher share; pooled, the state comes to 38.9%.

Which counties border Fountain County?

Fountain County borders 5 counties: Warren County, Montgomery County, Vermillion County, Tippecanoe County and Parke County.

Products

Fountain County, Products

Testing a home in Fountain County

In Fountain County, 55.0% of 60 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 38.9% pooled across Indiana. In Zone 1 the year-round level in Fountain 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

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

Explore

Fountain County, Bordering counties

Counties bordering Fountain County

Calculated by Radon411

Fountain County, Cities and towns

Cities and towns in Fountain County

The Census Bureau estimates 17,013 residents in Fountain County for July 1, 2025, 521 more than in 2020 (+3.2%). That works out to 43 people per square mile of land. No town dominates: Attica, the largest, has 3,290 residents, 19.3% of the total. Together its 8 incorporated places hold 57.3% of those residents; the other 42.7% live outside any of them. Reported testing is thin here: 60 tests over 2008 to 2017, or 3.5 for every 1,000 residents (2025 estimate), where Indiana as a whole comes to 6.2.

From Attica to Wallace, CDC publishes no figure by town: each reads Fountain County's.

The cities and towns in Fountain County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Attica3,290+7.8%19.3%
Covington2,774+3.1%16.3%
Veedersburg2,117+1.0%12.4%
Kingman564+1.8%3.3%
Hillsboro513+0.6%3.0%
Newtown228+2.2%1.3%
Mellott175+1.2%1.0%
Wallace82+1.2%0.5%

8 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).

Fountain County, Homes

Homes in Fountain County

Fountain County is a place of houses on their own lots: 79% of its 7,823 homes are detached single-family houses, against 73% across Indiana. The homes are older than Indiana's as a whole: half were built before 1964 (1976 for Indiana), and 46% date from before 1960. 75% of occupied homes are lived in by their owner (Indiana: 70%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Fountain County, Indiana, 2019 to 2023
HomesFountain CountyIndiana
Housing units7,8232,953,344
Detached houses79%73%
In buildings of 5 or more2%13%
Mobile homes10%4%
Built before 196046%32%
Built since 200010%21%
Middle year built19641976
Owner-occupied75%70%

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