Short-term kit
RA100 short-term liquid scintillation radon test kit
- Lab fee extra
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Collingsworth County, Texas
EPA puts Collingsworth County in Zone 3, its lowest radon zone, and only 1 radon test from it is on file with CDC (2008 to 2017, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Nearest county
71.4%
Randall County, 92 miles
- Randall
- 71.4%
- Texas
- 10.4%
Share at 4+ pCi/L, 84 tests, 2007 to 2016
Ground above low
1.3%
26.0 pts below Texas
- Collingsworth
- 1.3%
- Texas
- 27.3%
Share of land USGS rates moderate or high potential
Tests reported
1
Too few for a share
- Collingsworth
- 1
- Needed
- 30
2008 to 2017, laboratory
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for Collingsworth County
Starts at EPA's action level
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 4.0 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.
The data
Collingsworth County, At a glance
Collingsworth County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 99% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Collingsworth County, 2008 to 2017, laboratory
CDC holds 1 reported test for Collingsworth County over the 2008 to 2017 laboratory totals, a result of 12.6 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Collingsworth County beside the counties around it is how this page reads it.
What these figures count
Only 1 test was reported to CDC for Collingsworth County over 2008 to 2017 (laboratory totals), 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: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Collingsworth County, Compared
Collingsworth County radon figures, compared
Calculated by Radon411CDC's largest figure for Collingsworth County rests on 1 test over the 2008 to 2017 laboratory totals, 1 of them at or above 4 pCi/L, so each test moves its share by 100.0 points and no rank or comparison is drawn from it. Results reached as high as 12.6 pCi/L, with a middle value of 12.6 pCi/L.
The nearest counties with a figure are Randall County (92 miles away) at 71.4%, Potter County (97 miles away) at 20.0% and Lubbock County (129 miles away) at 57.8%. Pooled across 140 Texas counties, 10.4% of reported tests reached that level; across every county in the country with a figure, 35.8%.
Statewide for the same period, Randall County reported the highest share (71.4%) and Nueces County the lowest (0.0%). EPA's 1993 map puts Collingsworth County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 99% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Collingsworth County, Geology
The ground under Collingsworth County
PredictedMost of the ground under Collingsworth County is one class on USGS's geologic map: 98.7% of its land is low radon potential, with 1.3% moderate. 98.6% of it lies in the area the map calls Central Texas, to which USGS gives a radon index of 7, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Central Texas | Cretaceous through Quaternary marine sandstone, shale, chalk, limestone, siltstone, clay, and lignite. | Low | 7 | 98.6% |
| Northern High Plains and Plateaus | Tertiary sandstone, siltstone, shale. | Moderate | 10 | 1.3% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Collingsworth County beside the ground around it
Across Texas 0.5% of the land is rated high; none of Collingsworth County's is. Of the 7 counties that border it, 3 have more moderate-potential ground, Gray County the most at 93.0%.
The map rates the ground, not the air in any home.
Local help
Collingsworth County, Local resources
Radon testing and mitigation in Collingsworth County
- Texas Radon GroupTexas Radon Group, run by Texas Tech University, does not license radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in Texas.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
The Texas Radon Group offers free radon test kits for Texas individuals who qualify.
- Compare kits
- Professionals in Texas7 professionals are listed in Texas.
What Texas's program says
- Licensing of radon professionals
There are no radon certification requirements for the State of Texas at this time, but the National Radon Proficiency Program lists radon testers and mitigators within Texas that have passed a rigorous national certification program.
What it means
Collingsworth County, Questions
Questions about radon in Collingsworth County
Are radon levels high in Collingsworth County?
Over the 2008 to 2017 laboratory totals, 100.0% of the radon tests reported to CDC for Collingsworth County, Texas were at or above 4 pCi/L, and the median reported pre-mitigation result was 12.6 pCi/L. Of the 8 nearest counties with a figure, within 251 miles, the share of tests at or above 4 pCi/L runs from 1.0% to 71.4%.
Which counties border Collingsworth County?
Collingsworth County borders 7 counties: Harmon County, OK, Wheeler County, TX, Donley County, TX, Childress County, TX, Hall County, TX, Beckham County, OK and Gray County, TX.
Products
Collingsworth County, Products
Testing a home in Collingsworth County
No CDC figure names Collingsworth County; the nearest county with one, Randall County (92 miles away), reported 71.4% of its tests at or above 4 pCi/L over the 2007 to 2016 laboratory totals, the only reading nearby until a test of this home. 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 Collingsworth County.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Monitor
lüft plug-in radon and indoor air quality monitor
- C-NRPP 2024/25: Approved
- Plug-in
- Wi-Fi, Bluetooth
- App only
First reading: Within 90 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Best radon monitors for Collingsworth County homes, compared
Explore
Collingsworth County, Bordering counties
Counties bordering Collingsworth County
Calculated by Radon411- Radon levels in Donley County, TXEPA zone 2
100.0%at or above 4 pCi/L
Median 4.0 pCi/L · 1 test
- Radon levels in Wheeler County, TXEPA zone 3
0.0%at or above 4 pCi/L
Median 2.7 pCi/L · 3 tests
- Radon levels in Childress County, TXEPA zone 3
0.0%at or above 4 pCi/L
Median 1.1 pCi/L · 1 test
- Radon levels in Beckham County, OKEPA zone 3
0.0%at or above 4 pCi/L
Median 1.8 pCi/L · 3 tests
- Radon levels in Gray County, TXEPA zone 2
0.0%at or above 4 pCi/L
Median 1.9 pCi/L · 3 tests
- Radon levels in Harmon County, OKEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Hall County, TXEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Collingsworth County, Cities and towns
Cities and towns in Collingsworth County
Collingsworth County has been losing residents: from 2,642 in 2020 to 2,487 on July 1, 2025, a fall of 5.9% by the Census Bureau's estimates. Spread over its land, that is 2.7 people to the square mile. Wellington alone is home to 1,770 of them, 71.2% of the total. Together its 2 incorporated places hold 74.7% of those residents; the other 25.3% live outside any of them. Testing is reported here more often than across the state: CDC's 1 reported test for 2008 to 2017 come to 0.4 for every 1,000 residents (2025 estimate), against 0.1 for Texas.
From Wellington to Dodson, CDC publishes no figure by town: each reads Collingsworth County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Wellington | 1,770 | −6.2% | 71.2% |
| Dodson | 89 | −5.3% | 3.6% |
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).
Collingsworth County, Homes
Homes in Collingsworth County
Collingsworth County is a place of houses on their own lots: 83% of its 1,471 homes are detached single-family houses, against 65% across Texas. The homes are older than Texas' as a whole: half were built before 1961 (1990 for Texas), and 48% date from before 1960. 75% of occupied homes are lived in by their owner (Texas: 63%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Collingsworth County | Texas |
|---|---|---|
| Housing units | 1,471 | 11,890,808 |
| Detached houses | 83% | 65% |
| In buildings of 5 or more | 1% | 21% |
| Mobile homes | 4% | 7% |
| Built before 1960 | 48% | 13% |
| Built since 2000 | 9% | 37% |
| Middle year built | 1961 | 1990 |
| Owner-occupied | 75% | 63% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.