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 Val Verde County, Texas
EPA puts Val Verde County in Zone 3, its lowest radon zone. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Nearest county
1.0%
Midland County, 146 miles
- Midland
- 1.0%
- Texas
- 10.4%
Share at 4+ pCi/L, 100 tests, 2007 to 2016
Ground above low
14.5%
12.8 pts below Texas
- Val Verde
- 14.5%
- Texas
- 27.3%
Share of land USGS rates moderate or high potential
Tests reported
0
None published
A home here needs its own test
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 Val Verde 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
Val Verde County, At a glance
Val Verde County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 85% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
No CDC test figures here
CDC has published no radon test figures for Val Verde County. Midland County, 146 miles away, is the nearest county with a figure over the 2007 to 2016 laboratory totals.
Val Verde County, Compared
Val Verde County radon figures, compared
Calculated by Radon411Val Verde County has no radon test figure of its own from CDC, whose counts over the 2007 to 2016 laboratory totals name 140 other Texas counties and leave it out. Pooled across 140 Texas counties, 10.4% of reported tests reached that level; across every county in the country with a figure, 35.8%.
The nearest counties with a figure are Midland County (146 miles away) at 1.0%, Bexar County (161 miles away) at 6.6% and Travis County (204 miles away) at 9.3%. 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 Val Verde County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 85% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Val Verde County, Geology
The ground under Val Verde County
PredictedMost of the ground under Val Verde County is one class on USGS's geologic map: 85.5% of its land is low radon potential, with 14.5% moderate. The map puts 83.4% of Val Verde County in the area it calls Southern High Plains and Plateaus and 14.5% in Northern High Plains and Plateaus, with one smaller area beside them. USGS gives the first a radon index of 7, in the low band (5 to 8), and the second 10, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Southern High Plains and Plateaus | Paleozoic and Mesozoic sandstone, limestone, shale. | Low | 7 | 83.4% |
| Northern High Plains and Plateaus | Tertiary sandstone, siltstone, shale. | Moderate | 10 | 14.5% |
| South Texas Plain | Cretaceous through Quaternary marine sandstone, shale, chalk, limestone, siltstone, clay, and lignite. | Low | 7 | 2.1% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Val Verde County beside the ground around it
Across Texas 0.5% of the land is rated high; none of Val Verde County's is. Of the 5 counties that border it, 1 has more moderate-potential ground, Terrell County the most at 46.8%.
The map rates the ground, not the air in any home.
Local help
Val Verde County, Local resources
Radon testing and mitigation in Val Verde 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
Val Verde County, Questions
Questions about radon in Val Verde County
Are radon levels high in Val Verde County?
No CDC testing statistics are published here for Val Verde County, Texas yet. Of the 8 nearest counties with a figure, within 261 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 57.8%.
Which counties border Val Verde County?
Val Verde County borders 5 counties: Edwards County, Kinney County, Sutton County, Crockett County and Terrell County.
Products
Val Verde County, Products
Testing a home in Val Verde County
No CDC figure names Val Verde County; the nearest county with one, Midland County (146 miles away), reported 1.0% 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 Val Verde 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
Explore
Val Verde County, Bordering counties
Counties bordering Val Verde County
Calculated by Radon411counties bordering Val Verde County: 1 of 5
Val Verde County, Cities and towns
Cities and towns in Val Verde County
The Census Bureau estimates 47,835 residents in Val Verde County for July 1, 2025, 238 more than in 2020 (+0.5%). That works out to 15 people per square mile of land. Del Rio, its one incorporated place, has 34,496 residents, 72.1% of the total. CDC publishes no radon test count for Val Verde County; across Texas its counts for 2007 to 2016 come to 0.1 tests for every 1,000 residents (2025 estimate).
Del Rio is the one incorporated place here; CDC publishes no figure by town, so it reads Val Verde County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Del Rio | 34,496 | −0.6% | 72.1% |
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).
Val Verde County, Homes
Homes in Val Verde County
Of Val Verde County's 18,631 homes, 70% are detached houses, against 65% across Texas; 8% are in buildings of five or more homes. Half of its homes were built before 1983, close to Texas' 1990: 14% date from before 1960 and 25% from 2000 or later. 67% 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 | Val Verde County | Texas |
|---|---|---|
| Housing units | 18,631 | 11,890,808 |
| Detached houses | 70% | 65% |
| In buildings of 5 or more | 8% | 21% |
| Mobile homes | 8% | 7% |
| Built before 1960 | 14% | 13% |
| Built since 2000 | 25% | 37% |
| Middle year built | 1983 | 1990 |
| Owner-occupied | 67% | 63% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.