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 Chase County, Nebraska
EPA puts Chase County in Zone 2, its middle radon zone, and only 4 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
55.6%
11.3 pts above NE
- Chase
- 55.6%
- Nebraska
- 44.3%
54 tests, 2019
Median result
4.8pCi/L
Action level reached
- Chase
- 4.8 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2019
Tests reported
54
63rd of 71 by tests
- Chase
- 54
- Douglas
- 15,510
Reported to CDC before any fix, 2019
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
33 of 71
Middle half
- Chase
- 55.6%
- Dixon
- 77.8%
By share, of 71 with 30+ tests
Read a result for Chase County
Starts at Chase County's median, 4.8 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 4.8 pCi/L
At or above 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 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. Chase County's median reported result, 2019.
The data
Chase County, At a glance
Chase County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Chase County is a
USGS geologic potential: Moderate across 74% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Chase County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 100.0% |
| 2015 | 41.2% |
| 2016 | 50.0% |
| 2017 | 76.5% |
| 2018 | 31.3% |
| 2019 | 55.6% |
| 2020 | 57.1% |
| 2021 | 25.0% |
| 2022 | 0.0% |
| 2023 | 25.0% |
2023: 25.0%. 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 4 tests were reported to CDC for Chase 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).
Chase County, Compared
Chase County radon figures, compared
Calculated by Radon411More than half: 55.6% of the 54 radon tests reported to CDC for Chase County in 2019 read at least 4 pCi/L. That places it 33rd of 71 Nebraska counties with 30 or more tests for the same period. That is 11.3 points above the 44.3% pooled from 89 Nebraska counties.
The newest figure, in 2023, counts only 4 tests (25.0% at or above 4 pCi/L), too few to compare, so this reading uses the 54-test figure.
The median result, 4.8 pCi/L, sits above EPA's 4 pCi/L action level, and the top reported result was 16.6 pCi/L. The rest split 33.3% under 2 pCi/L and 11.1% from 2 to 4 (Nebraska: 29.4% and 26.4%). The reported tests do not follow EPA's Zone 2 label for Chase County (predicted average between 2 and 4 pCi/L): 55.6% of them reached 4 pCi/L, fewer than that label suggests.
Perkins County, the one bordering county with a figure for the same period, reported 33.3%. Statewide for the same period, Dixon County reported the highest share (77.8%) and Merrick County the lowest (3.4%).
The busiest year on file was 2019, with 54 tests reported; the quietest, 2022, had 3.
Over 6 years of annual figures the share fell 16.2 points, from 41.2% in 2015 to 25.0% in 2021; its peak was 76.5% in 2017. Nationally, every county with a figure for the same period pools to 29.0%; Chase County sits 26.6 points above it. CDC also counts 6 tests taken after mitigation in Chase County for the same period: tests in homes where a fix was already in.
Chase CountyNebraska, pooled
25.0% % of tests34.9% % of tests
| Year | Tests | Chase County, at or above 4 pCi/L | Nebraska, pooled |
|---|---|---|---|
| 2015 | 51 | 41.2% | 53.3% |
| 2016 | 30 | 50.0% | 47.4% |
| 2017 | 51 | 76.5% | 47.7% |
| 2018 | 48 | 31.3% | 44.5% |
| 2019 | 54 | 55.6% | 44.3% |
| 2021 | 36 | 25.0% | 34.9% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Chase County, Geology
The ground under Chase County
PredictedUSGS's geologic map splits Chase County: 74.3% of its land is moderate radon potential and 25.7% high. The map puts 74.3% of Chase County in the area it calls Tertiary Rocks and 24.4% 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 | 74.3% |
| Loess over K-T | Loess-mantled Tertiary and Cretaceous bedrock. | High | 13 | 24.4% |
| Ogallala Formation | Tertiary sandstone, in part covered by windblown eolian sand and loess deposits. | High | 12 | 1.3% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Chase County beside the ground around it
Nebraska as a whole has more high-potential ground than Chase County: 40.9% of its land, against 25.7% here. Of the 5 counties that border it, 4 have more high-potential ground, Phillips County, CO the most at 88.1%.
The map rates the ground, not the air in any home.
Local help
Chase County, Local resources
Radon testing and mitigation in Chase 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
Chase County, Questions
Questions about radon in Chase County
Are radon levels high in Chase County?
In 2023, 25.0% of the radon tests reported to CDC for Chase County, Nebraska were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.5 pCi/L. Of 71 Nebraska counties with 30 or more tests for the same period, 32 reported a higher share; pooled, the state comes to 44.3%.
Which counties border Chase County?
Chase County borders 5 counties: Perkins County, NE, Dundy County, NE, Hayes County, NE, Phillips County, CO and Yuma County, CO.
Products
Chase County, Products
Testing a home in Chase County
In Chase County, 55.6% of 54 tests reported to CDC in 2019 reached 4 pCi/L, against 44.3% pooled across Nebraska. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Chase 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
RadonEye RD200 plug-in continuous radon monitor
- C-NRPP 2024/25: Approved
- Plug-in
- Bluetooth
- Alarm
- Screen, app
Method: Ion chamber
First reading: Within 10 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Chase County, Bordering counties
Counties bordering Chase County
Calculated by Radon411- Radon levels in Hayes County, NEEPA zone 1
100.0%at or above 4 pCi/L
Median 7.2 pCi/L · 6 tests · 44.4 points above Chase County
- Radon levels in Phillips County, COEPA zone 1
100.0%at or above 4 pCi/L
Median 13.1 pCi/L · 1 test · 44.4 points above Chase County
- Radon levels in Yuma County, COEPA zone 1
46.2%at or above 4 pCi/L
Median 3.5 pCi/L · 13 tests · 9.4 points below Chase County
- Radon levels in Perkins County, NEEPA zone 2
33.3%at or above 4 pCi/L
Median 3.1 pCi/L · 36 tests · 22.3 points below Chase County
- Radon levels in Dundy County, NEEPA zone 2
12.5%at or above 4 pCi/L
Median 1.4 pCi/L · 24 tests · 43.1 points below Chase County
Chase County, Cities and towns
Cities and towns in Chase County
About 3,718 people live in Chase County by the Census Bureau's estimate for July 1, 2025, 173 fewer than in 2020 (−4.4%). Spread over its land, that is 4.2 people to the square mile. Imperial alone is home to 1,962 of them, 52.8% of the total. Together its 3 incorporated places hold 67.3% of those residents; the other 32.7% live outside any of them. Reported testing is thin here: 54 tests over 2019, or 14.5 for every 1,000 residents (2025 estimate), where Nebraska as a whole comes to 25.7.
From Imperial to Lamar, CDC publishes no figure by town: each reads Chase County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Imperial | 1,962 | −5.0% | 52.8% |
| Wauneta | 515 | −6.4% | 13.9% |
| Lamar | 24 | −7.7% | 0.6% |
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).
Chase County, Homes
Homes in Chase County
Chase County is a place of houses on their own lots: 86% of its 1,870 homes are detached single-family houses, against 72% across Nebraska. Half of its homes were built before 1972, close to Nebraska's 1975: 40% date from before 1960 and 8% from 2000 or later. Owners live in 78% of the occupied homes (Nebraska: 67%), so for most households a test and a fix are their own to order.
| Homes | Chase County | Nebraska |
|---|---|---|
| Housing units | 1,870 | 855,631 |
| Detached houses | 86% | 72% |
| In buildings of 5 or more | 1% | 17% |
| Mobile homes | 12% | 3% |
| Built before 1960 | 40% | 32% |
| Built since 2000 | 8% | 22% |
| Middle year built | 1972 | 1975 |
| Owner-occupied | 78% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.