Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Locations and reports
Radon Levels in Hawkins County, Tennessee
EPA puts Hawkins County in Zone 1, its highest radon zone, and only 3 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
Share at 4+ pCi/L
38.4%
5.1 pts above TN
- Hawkins
- 38.4%
- Tennessee
- 33.3%
289 tests, 2008 to 2017
Median result
2.7pCi/L
Below action level
- Hawkins
- 2.7 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
289
20th of 80 by tests
- Hawkins
- 289
- Davidson
- 5,592
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 1
Highest potential
- Zone 1
- 2
- 3
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Rank in Tennessee
23 of 80
Middle half
- Hawkins
- 38.4%
- Jefferson
- 56.8%
By share, of 80 with 30+ tests
Read a result for Hawkins County
Starts at Hawkins County's median, 2.7 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 2.7 pCi/L
Between 2 and 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Hawkins County's median reported result, 2008 to 2017.
The data
Hawkins County, At a glance
Hawkins County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Hawkins County in
USGS geologic potential: High across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Hawkins County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2022 | 22.2% |
| 2023 | 33.3% |
2023: 33.3%. Across these years the share ran from 22.2% to 33.3%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 3 tests were reported to CDC for Hawkins 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).
Hawkins County, Compared
Hawkins County radon figures, compared
Calculated by Radon411In Hawkins County, about 4 in 10 reported tests over the 2008 to 2017 laboratory totals (111 of 289) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 2.7 points higher. Across 95 Tennessee counties pooled together, 33.3% of tests reached that level, so Hawkins County runs 5.1 points above its state.
The newest figure, in 2023, counts only 3 tests (33.3% at or above 4 pCi/L), too few to compare, so this reading uses the 289-test figure.
Of 6 neighbours with a figure, all 6 reported a larger share at or above 4 pCi/L; the spread is 45.2% (Hamblen County) to 51.5% (Sullivan County). By share, Hawkins County is 23rd of 80 Tennessee counties with 30 or more tests for the same period.
Half the tests came in under 2.7 pCi/L and half over it; the single highest reached 94.5 pCi/L. Below the action level, 113 tests (39.1%) came in under 2 pCi/L, against 42.4% statewide, and 65 tests (22.5%) fell between 2 and 4, against 24.3% statewide.
Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 38.4% share point the same way here. USGS geology rates 100% of the county's land high radon potential. CDC also counts 8 tests taken after mitigation in Hawkins County for the same period: tests in homes where a fix was already in.
The busiest year on file was 2022, with 108 tests reported; the quietest, 2023, had 3.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Hawkins County, Geology
The ground under Hawkins County
PredictedUSGS's geologic map puts all of Hawkins County's mapped land in one class: high radon potential. All of it lies in the area the map calls Ridge and Valley, to which USGS gives a radon index of 14, in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Ridge and Valley | Paleozoic sandstone and cherty dolostone. | High | 14 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Hawkins County beside the ground around it
Hawkins County has more high-potential ground than Tennessee as a whole: 100% of its land against 47.2%. Of the 7 counties that border it, none has as large a share of high-potential ground; Grainger County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Hawkins County, Local resources
Radon testing and mitigation in Hawkins 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
Hawkins County, Questions
Questions about radon in Hawkins County
Are radon levels high in Hawkins County?
In 2023, 33.3% of the radon tests reported to CDC for Hawkins County, Tennessee were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.8 pCi/L. Of 80 Tennessee counties with 30 or more tests for the same period, 22 reported a higher share; pooled, the state comes to 33.3%.
Which counties border Hawkins County?
Hawkins County borders 7 counties: Greene County, TN, Hancock County, TN, Hamblen County, TN, Washington County, TN, Scott County, VA, Grainger County, TN and Sullivan County, TN.
Products
Hawkins County, Products
Testing a home in Hawkins County
In Hawkins County, 38.4% of 289 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 33.3% pooled across Tennessee. In Zone 1 the year-round level in Hawkins 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
Monitor
Corentium Home battery digital radon detector
- C-NRPP 2024/25: Approved
- Battery
- Screen
Method: Alpha spectrometry
Short-term kit
RA400 short-term liquid scintillation radon test kit, lab fee included
- Lab fee included
Method: Liquid scintillation
In home: 48 to 96 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Hawkins County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Hawkins County
Explore
Hawkins County, Bordering counties
Counties bordering Hawkins County
Calculated by Radon411- Radon levels in Sullivan County, TNEPA zone 1
51.5%at or above 4 pCi/L
Median 4.2 pCi/L · 1,799 tests · 13.1 points above Hawkins County
- Radon levels in Scott County, VAEPA zone 1
50.7%at or above 4 pCi/L
Median 4.0 pCi/L · 75 tests · 12.3 points above Hawkins County
- Radon levels in Washington County, TNEPA zone 1
49.6%at or above 4 pCi/L
Median 3.9 pCi/L · 1,590 tests · 11.2 points above Hawkins County
- Radon levels in Grainger County, TNEPA zone 1
48.2%at or above 4 pCi/L
Median 3.8 pCi/L · 56 tests · 9.8 points above Hawkins County
- Radon levels in Greene County, TNEPA zone 1
46.0%at or above 4 pCi/L
Median 3.6 pCi/L · 385 tests · 7.6 points above Hawkins County
- Radon levels in Hamblen County, TNEPA zone 1
45.2%at or above 4 pCi/L
Median 3.5 pCi/L · 186 tests · 6.8 points above Hawkins County
- Radon levels in Hancock County, TNEPA zone 1
9.1%at or above 4 pCi/L
Median 1.8 pCi/L · 22 tests · 29.3 points below Hawkins County
Hawkins County, Cities and towns
Cities and towns in Hawkins County
Hawkins County is growing: the Census Bureau puts it at 59,559 residents on July 1, 2025, up 5.0% from 56,715 in 2020. That works out to 122 people per square mile of land. Kingsport, the largest place on its list (57,530 residents in all), extends beyond Hawkins County, so no share of the total is worked out for it. CDC's 289 reported tests for 2008 to 2017 work out to 4.9 per 1,000 residents (2025 estimate), close to Tennessee's 4.2.
From Kingsport to Bulls Gap, CDC publishes no figure by town: each reads Hawkins County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Kingsportextends beyond Hawkins County | 57,530 | +3.6% | Counted whole |
| Church Hill | 7,297 | +4.3% | 12.3% |
| Mount Carmel | 5,540 | +2.2% | 9.3% |
| Rogersville | 4,690 | +0.6% | 7.9% |
| Bean Stationextends beyond Hawkins County | 3,190 | +7.7% | Counted whole |
| Surgoinsville | 1,920 | +2.8% | 3.2% |
| Bulls Gap | 768 | +2.5% | 1.3% |
7 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 Hawkins County is counted whole, so it has no share.
Hawkins County, Homes
Homes in Hawkins County
Of Hawkins County's 27,299 homes, 69% are detached houses, against 68% across Tennessee; 21% are mobile homes. Half of its homes were built before 1984, close to Tennessee's 1986: 20% date from before 1960 and 21% from 2000 or later. Owners live in 79% of the occupied homes (Tennessee: 67%), so for most households a test and a fix are their own to order.
| Homes | Hawkins County | Tennessee |
|---|---|---|
| Housing units | 27,299 | 3,095,472 |
| Detached houses | 69% | 68% |
| In buildings of 5 or more | 6% | 14% |
| Mobile homes | 21% | 8% |
| Built before 1960 | 20% | 18% |
| Built since 2000 | 21% | 29% |
| Middle year built | 1984 | 1986 |
| Owner-occupied | 79% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.