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
Locations and reports
Radon Levels in Dundy County, Nebraska
EPA puts Dundy County in Zone 2, its middle radon zone, and only 2 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
30.0%
17.7 pts below NE
- Dundy
- 30.0%
- Nebraska
- 47.7%
30 tests, 2017
Median result
2.9pCi/L
Below action level
- Dundy
- 2.9 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2017
Tests reported
30
74th of 74 by tests
- Dundy
- 30
- Douglas
- 18,306
Reported to CDC before any fix, 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 Nebraska
68 of 74
Lowest quarter
- Dundy
- 30.0%
- Webster
- 84.6%
By share, of 74 with 30+ tests
Read a result for Dundy County
Starts at Dundy County's median, 2.9 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 2.9 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. Dundy County's median reported result, 2017.
The data
Dundy County, At a glance
Dundy County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Dundy County is a
USGS geologic potential: Moderate across 66% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Dundy County, 2022
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2015 | 50.0% |
| 2016 | 100.0% |
| 2017 | 30.0% |
| 2018 | 100.0% |
| 2019 | 12.5% |
| 2020 | 0.0% |
| 2021 | 66.7% |
| 2022 | 0.0% |
2022: 0.0%. Across these years the share ran from 0.0% to 100.0%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 2 tests were reported to CDC for Dundy 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).
Dundy County, Compared
Dundy County radon figures, compared
Calculated by Radon411In Dundy County, about 3 in 10 reported tests in 2017 (9 of 30) were at or above EPA's action level. Against the national pool of 31.7%, the gap is 1.7 points lower. Across 92 Nebraska counties pooled together, 47.7% of tests reached that level, so Dundy County runs 17.7 points below its state.
The newest figure, in 2022, counts only 2 tests (0.0% at or above 4 pCi/L), too few to compare, so this reading uses the 30-test figure.
Of 2 neighbours with a figure, all 2 reported a larger share at or above 4 pCi/L; the spread is 42.9% (Hitchcock County) to 76.5% (Chase County). By share, Dundy County is 68th of 74 Nebraska counties with 30 or more tests for the same period.
Half the tests came in under 2.9 pCi/L and half over it; the single highest reached 11.7 pCi/L. Below the action level, 12 tests (40.0%) came in under 2 pCi/L, against 25.6% statewide, and 9 tests (30.0%) fell between 2 and 4, against 26.7% statewide.
Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 30.0% share point the same way here. USGS geology rates 66% of the county's land moderate radon potential.
The busiest year on file was 2017, with 30 tests reported; the quietest, 2022, had 2.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Dundy County, Geology
The ground under Dundy County
PredictedUSGS's geologic map splits Dundy County: 66.2% of its land is moderate radon potential and 33.8% high. The map puts 66.2% of Dundy County in the area it calls Tertiary Rocks and 32.7% in Loess over K-T, 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 13, in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Tertiary Rocks | Tertiary sandstone, siltstone, and volcanic ash. | Moderate | 11 | 66.2% |
| Loess over K-T | Loess-mantled Tertiary and Cretaceous bedrock. | High | 13 | 32.7% |
| Ogallala Formation | Tertiary sandstone, in part covered by windblown eolian sand and loess deposits. | High | 12 | 1.1% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Dundy County beside the ground around it
On high-potential ground Dundy County is close to Nebraska as a whole: 33.8% of its land against 40.9%. Of the 6 counties that border it, 5 have more high-potential ground, Rawlins County, KS the most at 100%.
The map rates the ground, not the air in any home.
Local help
Dundy County, Local resources
Radon testing and mitigation in Dundy County
- Office of Environmental Health Hazards & Indoor AirOffice of Environmental Health Hazards & Indoor Air, run by Nebraska Department of Health and Human Services, licenses or certifies radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in Nebraska.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
Some local programs distribute radon kits for free or a reduced cost.
- Compare kits
- Professionals in Nebraska116 professionals are listed in Nebraska.
What Nebraska's program says
- Phone
- (402) 471-1005
- Licensing of radon professionals
If radon testing is done in schools, offices, or other places of work, it must be done by a licensed radon measurement business.
What it means
Dundy County, Questions
Questions about radon in Dundy County
Are radon levels high in Dundy County?
In 2022, 0.0% of the radon tests reported to CDC for Dundy County, Nebraska were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.0 pCi/L. Of 74 Nebraska counties with 30 or more tests for the same period, 67 reported a higher share; pooled, the state comes to 47.7%.
Which counties border Dundy County?
Dundy County borders 6 counties: Cheyenne County, KS, Chase County, NE, Hitchcock County, NE, Yuma County, CO, Hayes County, NE and Rawlins County, KS.
Products
Dundy County, Products
Testing a home in Dundy County
In Dundy County, 30.0% of 30 tests reported to CDC in 2017 reached 4 pCi/L, against 47.7% pooled across Nebraska. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Dundy 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
Monitor
RadonPro Wi-Fi radon monitor with a built-in Geiger counter
- C-NRPP 2024/25: Not included
- Plug-in
- Wi-Fi
- Alarm
- Screen, app
First reading: Within 5 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Dundy County, Bordering counties
Counties bordering Dundy County
Calculated by Radon411- Radon levels in Chase County, NEEPA zone 2
76.5%at or above 4 pCi/L
Median 6.1 pCi/L · 51 tests · 46.5 points above Dundy County
- Radon levels in Rawlins County, KSEPA zone 1
71.4%at or above 4 pCi/L
Median 7.2 pCi/L · 7 tests · 41.4 points above Dundy County
- Radon levels in Hayes County, NEEPA zone 1
66.7%at or above 4 pCi/L
Median 5.2 pCi/L · 9 tests · 36.7 points above Dundy County
- Radon levels in Hitchcock County, NEEPA zone 1
42.9%at or above 4 pCi/L
Median 3.3 pCi/L · 42 tests · 12.9 points above Dundy County
- Radon levels in Yuma County, COEPA zone 1
33.3%at or above 4 pCi/L
Median 3.6 pCi/L · 9 tests · 3.3 points above Dundy County
- Radon levels in Cheyenne County, KSEPA zone 1
14.3%at or above 4 pCi/L
Median 1.7 pCi/L · 7 tests · 15.7 points below Dundy County
Dundy County, Cities and towns
Cities and towns in Dundy County
Dundy County has been losing residents: from 1,654 in 2020 to 1,568 on July 1, 2025, a fall of 5.2% by the Census Bureau's estimates. Spread over its land, that is 1.7 people to the square mile. Its largest town, Benkelman, has 771 residents, 49.2% of the total. Together its 2 incorporated places hold 58.0% of those residents; the other 42.0% live outside any of them. Reported testing is thin here: 30 tests over 2017, or 19.1 for every 1,000 residents (2025 estimate), where Nebraska as a whole comes to 32.5.
From Benkelman to Haigler, CDC publishes no figure by town: each reads Dundy County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Benkelman | 771 | −6.4% | 49.2% |
| Haigler | 139 | −4.1% | 8.9% |
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).
Dundy County, Homes
Homes in Dundy County
Dundy County is a place of houses on their own lots: 87% of its 1,002 homes are detached single-family houses, against 72% across Nebraska. The homes are older than Nebraska's as a whole: half were built before 1953 (1975 for Nebraska), and 56% date from before 1960. Owners live in 77% of the occupied homes (Nebraska: 67%), so for most households a test and a fix are their own to order.
| Homes | Dundy County | Nebraska |
|---|---|---|
| Housing units | 1,002 | 855,631 |
| Detached houses | 87% | 72% |
| In buildings of 5 or more | 1% | 17% |
| Mobile homes | 4% | 3% |
| Built before 1960 | 56% | 32% |
| Built since 2000 | 6% | 22% |
| Middle year built | 1953 | 1975 |
| 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.