Short-term kit
Radon Short Term Test Kit short-term charcoal radon test kit, lab fee included
- Lab fee included
Method: Charcoal
In home: 2 to 7 days
Locations and reports
Radon Levels in Deaf Smith County, Texas
EPA puts Deaf Smith County in Zone 2, its middle radon zone, and only 6 radon tests from it are 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
Highest bordering
71.4%
Randall County
- Randall
- 71.4%
- Potter
- 20.0%
2 of 7 neighbours have 30+ tests, 2007 to 2016
Nearest county
71.4%
Randall County, 40 miles
- Randall
- 71.4%
- Texas
- 10.4%
Share at 4+ pCi/L, 84 tests, 2007 to 2016
Ground above low
100.0%
72.7 pts above Texas
- Deaf Smith
- 100.0%
- Texas
- 27.3%
Share of land USGS rates moderate or high potential
Tests reported
6
Too few for a share
- Deaf Smith
- 6
- Needed
- 30
2008 to 2017, laboratory
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Read a result for Deaf Smith 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
Deaf Smith County, At a glance
Deaf Smith County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Deaf Smith County is a
USGS geologic potential: Moderate across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Deaf Smith County, 2008 to 2017, laboratory
CDC holds 6 reported tests for Deaf Smith County over the 2008 to 2017 laboratory totals, with a median of 8.2 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Deaf Smith County beside the counties around it is how this page reads it.
What these figures count
Only 6 tests were reported to CDC for Deaf Smith 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).
Deaf Smith County, Compared
Deaf Smith County radon figures, compared
Calculated by Radon411CDC's largest figure for Deaf Smith County rests on 6 tests over the 2008 to 2017 laboratory totals, 5 of them at or above 4 pCi/L, so each test moves its share by 16.7 points and no rank or comparison is drawn from it. Results reached as high as 13.8 pCi/L, with a middle value of 8.2 pCi/L.
Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Randall County reported the largest share at or above 4 pCi/L, 71.4%, and Potter County the smallest, 20.0%. Farther out, Lubbock County (104 miles away) at 57.8%, Midland County (216 miles away) at 1.0% and El Paso County (304 miles away) at 0.0% have figures too. 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 Deaf Smith County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Deaf Smith County, Geology
The ground under Deaf Smith County
PredictedUSGS's geologic map puts all of Deaf Smith County's mapped land in one class: moderate radon potential. 96.6% of it lies in the area the map calls Northern High Plains and Plateaus, to which USGS gives a radon index of 10, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Northern High Plains and Plateaus | Tertiary sandstone, siltstone, shale. | Moderate | 10 | 96.6% |
| Great Plains Pecos Valley Section | Quaternary alluvial and eolian sand and silt. | Moderate | 9 | 3.3% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Deaf Smith County beside the ground around it
Across Texas 0.5% of the land is rated high; none of Deaf Smith County's is. Of the 7 counties that border it, none has as large a share of moderate-potential ground; Castro County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Deaf Smith County, Local resources
Radon testing and mitigation in Deaf Smith 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
Deaf Smith County, Questions
Questions about radon in Deaf Smith County
Are radon levels high in Deaf Smith County?
Over the 2008 to 2017 laboratory totals, 83.3% of the radon tests reported to CDC for Deaf Smith County, Texas were at or above 4 pCi/L, and the median reported pre-mitigation result was 8.2 pCi/L. Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Randall County reported the largest share at or above 4 pCi/L, 71.4%, and Potter County the smallest, 20.0%.
Which counties border Deaf Smith County?
Deaf Smith County borders 7 counties: Oldham County, TX, Parmer County, TX, Randall County, TX, Castro County, TX, Potter County, TX, Curry County, NM and Quay County, NM.
Products
Deaf Smith County, Products
Testing a home in Deaf Smith County
No CDC figure names Deaf Smith County; the nearest county with one, Randall County (40 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. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Deaf Smith County; a long-term test tells the year-round average.
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
Corentium Home battery digital radon detector
- C-NRPP 2024/25: Approved
- Battery
- Screen
Method: Alpha spectrometry
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Deaf Smith County, Bordering counties
Counties bordering Deaf Smith County
Calculated by Radon411- Radon levels in Parmer County, TXEPA zone 2
100.0%at or above 4 pCi/L
Median 10.6 pCi/L · 1 test
- Radon levels in Curry County, NMEPA zone 2
100.0%at or above 4 pCi/L
Median 7.5 pCi/L · 6 tests
- Radon levels in Quay County, NMEPA zone 2
100.0%at or above 4 pCi/L
Median 5.3 pCi/L · 2 tests
- Radon levels in Randall County, TXEPA zone 2
71.4%at or above 4 pCi/L
Median 6.2 pCi/L · 84 tests
- Radon levels in Potter County, TXEPA zone 2
20.0%at or above 4 pCi/L
Median 1.1 pCi/L · 70 tests
- Radon levels in Castro County, TXEPA zone 2
0.0%at or above 4 pCi/L
Median 3.6 pCi/L · 1 test
- Radon levels in Oldham County, TXEPA zone 2
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Deaf Smith County, Cities and towns
Cities and towns in Deaf Smith County
The Census Bureau estimates 18,626 residents in Deaf Smith County for July 1, 2025, 93 more than in 2020 (+0.5%). That works out to 12 people per square mile of land. Hereford, its one incorporated place, has 14,976 residents, 80.4% of the total. Testing is reported here more often than across the state: CDC's 6 reported tests for 2008 to 2017 come to 0.3 for every 1,000 residents (2025 estimate), against 0.1 for Texas.
Hereford is the one incorporated place here; CDC publishes no figure by town, so it reads Deaf Smith County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Hereford | 14,976 | +0.4% | 80.4% |
One incorporated place, 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).
Deaf Smith County, Homes
Homes in Deaf Smith County
Deaf Smith County is a place of houses on their own lots: 80% of its 6,993 homes are detached single-family houses, against 65% across Texas. The homes are older than Texas' as a whole: half were built before 1969 (1990 for Texas), and 27% date from before 1960. 66% 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 | Deaf Smith County | Texas |
|---|---|---|
| Housing units | 6,993 | 11,890,808 |
| Detached houses | 80% | 65% |
| In buildings of 5 or more | 6% | 21% |
| Mobile homes | 7% | 7% |
| Built before 1960 | 27% | 13% |
| Built since 2000 | 13% | 37% |
| Middle year built | 1969 | 1990 |
| Owner-occupied | 66% | 63% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.