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 Cannon County, Tennessee
EPA puts Cannon County in Zone 2, its middle radon zone, and only 1 radon test from it is on file with CDC (2023). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
10.7%
22.6 pts below TN
- Cannon
- 10.7%
- Tennessee
- 33.3%
56 tests, 2008 to 2017
Median result
1.3pCi/L
Below action level
- Cannon
- 1.3 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
56
61st of 80 by tests
- Cannon
- 56
- Davidson
- 5,592
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Rank in Tennessee
69 of 80
Lowest quarter
- Cannon
- 10.7%
- Jefferson
- 56.8%
By share, of 80 with 30+ tests
Read a result for Cannon County
Starts at Cannon 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. Cannon County's median reported result, 2008 to 2017.
The data
Cannon County, At a glance
Cannon County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Cannon County is a
USGS geologic potential: High across 57% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Cannon County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2022 | 0.0% |
| 2023 | 0.0% |
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 1 test was reported to CDC for Cannon 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).
Cannon County, Compared
Cannon County radon figures, compared
Calculated by Radon411Cannon County reports fewer high tests than Tennessee overall. 10.7% of its 56 tests over the 2008 to 2017 laboratory totals were at or above 4 pCi/L. That is 22.6 points below the 33.3% pooled from 95 Tennessee counties.
The newest figure, in 2023, counts only 1 test (0.0% at or above 4 pCi/L), too few to compare, so this reading uses the 56-test figure.
Ordered from highest share down, it comes 69th of 80 Tennessee counties with 30 or more tests for the same period. Nationally, every county with a figure for the same period pools to 35.7%; Cannon County sits 25.0 points below it.
Next door, the shares run from 15.3% in Rutherford County to 36.9% in Warren County. Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 10.7% share point the same way here.
Half the tests came in under 1.3 pCi/L and half over it; the single highest reached 18.5 pCi/L. The rest split 60.7% under 2 pCi/L and 28.6% from 2 to 4 (Tennessee: 42.4% and 24.3%).
The busiest year on file was 2022, with 9 tests reported; the quietest, 2023, had 1.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Cannon County, Geology
The ground under Cannon County
PredictedUSGS's geologic map splits Cannon County: 57.4% of its land is high radon potential and 42.6% moderate. The map puts 57.4% of Cannon County in the area it calls Nashville Basin and 42.6% in Highland Rim. USGS gives the first a radon index of 14, in the high band (12 to 17), and the second 11, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Nashville Basin | Mississippian Limestone. | High | 14 | 57.4% |
| Highland Rim | Paleozoic sedimentary rocks (limestone, shale, chert, and dolostone). | Moderate | 11 | 42.6% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Cannon County beside the ground around it
Cannon County has more high-potential ground than Tennessee as a whole: 57.4% of its land against 47.2%. Of the 5 counties that border it, 3 have more high-potential ground, Rutherford County the most at 100%.
The map rates the ground, not the air in any home.
Local help
Cannon County, Local resources
Radon testing and mitigation in Cannon 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
Cannon County, Questions
Questions about radon in Cannon County
Are radon levels high in Cannon County?
In 2023, 0.0% of the radon tests reported to CDC for Cannon County, Tennessee were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.3 pCi/L. Of 80 Tennessee counties with 30 or more tests for the same period, 68 reported a higher share; pooled, the state comes to 33.3%.
Which counties border Cannon County?
Cannon County borders 5 counties: Warren County, DeKalb County, Rutherford County, Coffee County and Wilson County.
Products
Cannon County, Products
Testing a home in Cannon County
In Cannon County, 10.7% of 56 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 33.3% pooled across Tennessee. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Cannon County; a long-term test tells the year-round average.
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
Cannon County, Bordering counties
Counties bordering Cannon County
Calculated by Radon411- Radon levels in Warren CountyEPA zone 2
36.9%at or above 4 pCi/L
Median 3.0 pCi/L · 149 tests · 26.2 points above Cannon County
- Radon levels in DeKalb CountyEPA zone 2
30.5%at or above 4 pCi/L
Median 3.1 pCi/L · 59 tests · 19.8 points above Cannon County
- Radon levels in Wilson CountyEPA zone 1
20.2%at or above 4 pCi/L
Median 1.7 pCi/L · 959 tests · 9.5 points above Cannon County
- Radon levels in Coffee CountyEPA zone 2
16.5%at or above 4 pCi/L
Median 1.3 pCi/L · 206 tests · 5.8 points above Cannon County
- Radon levels in Rutherford CountyEPA zone 1
15.3%at or above 4 pCi/L
Median 1.5 pCi/L · 1,200 tests · 4.6 points above Cannon County
Cannon County, Cities and towns
Cities and towns in Cannon County
Cannon County is growing: the Census Bureau puts it at 15,296 residents on July 1, 2025, up 5.0% from 14,564 in 2020. That works out to 58 people per square mile of land. No town dominates: Woodbury, the largest, has 2,828 residents, 18.5% of the total. Together its 2 incorporated places hold 20.4% of those residents; the other 79.6% live outside any of them. CDC's 56 reported tests for 2008 to 2017 work out to 3.7 per 1,000 residents (2025 estimate), close to Tennessee's 4.2.
From Woodbury to Auburntown, CDC publishes no figure by town: each reads Cannon County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Woodbury | 2,828 | +3.8% | 18.5% |
| Auburntown | 293 | +5.0% | 1.9% |
2 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).
Cannon County, Homes
Homes in Cannon County
Cannon County is a place of houses on their own lots: 79% of its 6,384 homes are detached single-family houses, against 68% across Tennessee. Half of its homes were built before 1989, close to Tennessee's 1986: 22% date from before 1960 and 26% 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 | Cannon County | Tennessee |
|---|---|---|
| Housing units | 6,384 | 3,095,472 |
| Detached houses | 79% | 68% |
| In buildings of 5 or more | 2% | 14% |
| Mobile homes | 17% | 8% |
| Built before 1960 | 22% | 18% |
| Built since 2000 | 26% | 29% |
| Middle year built | 1989 | 1986 |
| Owner-occupied | 77% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.