Short-term kitKidde
442020 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 3 days
Locations and reports
Radon Levels in Scott County, Tennessee
EPA puts Scott County in Zone 3, its lowest radon zone, and only 6 radon tests from it are on file with CDC (2022). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
2.6%
30.7 pts below TN
- Scott
- 2.6%
- Tennessee
- 33.3%
39 tests, 2008 to 2017
Median result
1.3pCi/L
Below action level
- Scott
- 1.3 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
39
72nd of 80 by tests
- Scott
- 39
- Davidson
- 5,592
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Rank in Tennessee
79 of 80
Lowest quarter
- Scott
- 2.6%
- Jefferson
- 56.8%
By share, of 80 with 30+ tests
Read a result for Scott County
Starts at Scott County's median, 1.3 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.3 pCi/L
Below 2 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Scott County's median reported result, 2008 to 2017.
The data
Scott County, At a glance
Scott County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Scott County, 2022
CDC holds 6 reported tests for Scott County in 2022, with a median of 0.3 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Scott County beside the counties around it is how this page reads it.
What these figures count
Only 6 tests were reported to CDC for Scott County over 2022, 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: 2022. Measured data period: 2005 to 2022 (every CDC figure on file).
Scott County, Compared
Scott County radon figures, compared
Calculated by Radon411Only 1 of 39 radon tests reported for Scott County over the 2008 to 2017 laboratory totals reached 4 pCi/L (2.6%). The median result, 1.3 pCi/L, sits below 2, well under EPA's 4 pCi/L action level, and the top reported result was 7.4 pCi/L.
The newest figure, in 2022, counts only 6 tests (0.0% at or above 4 pCi/L), too few to compare, so this reading uses the 39-test figure.
Across 95 Tennessee counties pooled together, 33.3% of tests reached that level, so Scott County runs 30.7 points below its state. Against the national pool of 35.7%, the gap is 33.1 points lower. Its place in the state: 79th of 80 Tennessee counties with 30 or more tests for the same period.
Zone 3 on EPA's map (predicted average under 2 pCi/L) and a 2.6% share point the same way here. Of 6 neighbours with a figure, all 6 reported a larger share at or above 4 pCi/L; the spread is 6.5% (Morgan County) to 60.9% (Wayne County, KY).
Below the action level, 28 tests (71.8%) came in under 2 pCi/L, against 42.4% statewide, and 10 tests (25.6%) fell between 2 and 4, against 24.3% statewide. USGS geology rates 100% of the county's land low radon potential.
CDC's ten-year totals for Scott County went from 39 tests (2005 to 2014) to 39 (2008 to 2017), the share going from 7.7% to 2.6%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Scott County, Geology
The ground under Scott County
PredictedMost of the ground under Scott County is one class on USGS's geologic map: 99.9% of its land is low radon potential, with 0.1% moderate. All of it lies in the area the map calls Appalachian Plateau, to which USGS gives a radon index of 8, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Appalachian Plateau | Sandstone and shale. | Low | 8 | 99.9% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Scott County beside the ground around it
Across Tennessee 47.2% of the land is rated high; none of Scott County's is. Of the 7 counties that border it, 4 have more high-potential ground, Anderson County the most at 68.6%.
The map rates the ground, not the air in any home.
Local help
Scott County, Local resources
Radon testing and mitigation in Scott County
- Tennessee Radon ProgramTennessee Radon Program, run by Department of Environment & Conservation, offers free or discounted test kits, and answers questions about testing and mitigation in Tennessee.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
The Tennessee Radon Program provides free radon test kits and information assistance to residents, while also providing training opportunities to radon professionals across the state.
- Compare kits
- Professionals in Tennessee1 professional is listed in Tennessee.
What Tennessee's program says
- Phone
- 1-800-232-1139
- TDEC.Radon@tn.gov
What it means
Scott County, Questions
Questions about radon in Scott County
Are radon levels high in Scott County?
In 2022, 0.0% of the radon tests reported to CDC for Scott County, Tennessee were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.3 pCi/L. Of 80 Tennessee counties with 30 or more tests for the same period, 78 reported a higher share; pooled, the state comes to 33.3%.
Which counties border Scott County?
Scott County borders 7 counties: Morgan County, TN, Campbell County, TN, Fentress County, TN, Anderson County, TN, McCreary County, KY, Wayne County, KY and Pickett County, TN.
Products
Scott County, Products
Testing a home in Scott County
In Scott County, 2.6% of 39 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 33.3% pooled across Tennessee. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in Scott County.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
MonitorSafetySiren
Pro4 plug-in radon detector with a display and alarm
- C-NRPP 2024/25: Not included
- Plug-in
- Alarm
- Screen
First reading: Within 48 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Scott County, Bordering counties
Counties bordering Scott County
Calculated by Radon411- Radon levels in Wayne County, KYEPA zone 2
60.9%at or above 4 pCi/L
Median 5.0 pCi/L · 64 tests · 58.3 points above Scott County
- Radon levels in Campbell County, TNEPA zone 3
53.5%at or above 4 pCi/L
Median 4.5 pCi/L · 71 tests · 50.9 points above Scott County
- Radon levels in Anderson County, TNEPA zone 1
48.3%at or above 4 pCi/L
Median 3.8 pCi/L · 269 tests · 45.7 points above Scott County
- Radon levels in Pickett County, TNEPA zone 2
46.5%at or above 4 pCi/L
Median 3.5 pCi/L · 43 tests · 43.9 points above Scott County
- Radon levels in Fentress County, TNEPA zone 2
9.1%at or above 4 pCi/L
Median 1.3 pCi/L · 33 tests · 6.5 points above Scott County
- Radon levels in Morgan County, TNEPA zone 3
6.5%at or above 4 pCi/L
Median 1.7 pCi/L · 31 tests · 3.9 points above Scott County
- Radon levels in McCreary County, KYEPA zone 2
0.0%at or above 4 pCi/L
Median 1.2 pCi/L · 9 tests · 2.6 points below Scott County
Scott County, Cities and towns
Cities and towns in Scott County
The Census Bureau estimates 22,671 residents in Scott County for July 1, 2025, 791 more than in 2020 (+3.6%). That works out to 43 people per square mile of land. No town dominates: Oneida, the largest, has 3,899 residents, 17.2% of the total. Together its 3 incorporated places hold 29.3% of those residents; the other 70.7% live outside any of them. Reported testing is thin here: 39 tests over 2008 to 2017, or 1.7 for every 1,000 residents (2025 estimate), where Tennessee as a whole comes to 4.2.
From Oneida to Winfield, CDC publishes no figure by town: each reads Scott County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Oneida | 3,899 | +3.0% | 17.2% |
| Huntsville | 1,709 | −1.8% | 7.5% |
| Winfield | 1,037 | +7.7% | 4.6% |
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).
Scott County, Homes
Homes in Scott County
Of Scott County's 9,851 homes, 65% are detached houses, against 68% across Tennessee; 27% are mobile homes. Half of its homes were built before 1987, close to Tennessee's 1986: 12% date from before 1960 and 26% from 2000 or later. 72% of occupied homes are lived in by their owner (Tennessee: 67%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Scott County | Tennessee |
|---|---|---|
| Housing units | 9,851 | 3,095,472 |
| Detached houses | 65% | 68% |
| In buildings of 5 or more | 4% | 14% |
| Mobile homes | 27% | 8% |
| Built before 1960 | 12% | 18% |
| Built since 2000 | 26% | 29% |
| Middle year built | 1987 | 1986 |
| Owner-occupied | 72% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.