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Radon Levels in Maverick County, Texas

EPA puts Maverick County in Zone 3, its lowest radon zone, and only 2 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

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  • Nearest county

    6.6%

    Bexar County, 119 miles

    Bexar
    6.6%
    Texas
    10.4%

    Share at 4+ pCi/L, 197 tests, 2007 to 2016

  • Ground above low

    None

    27.3 pts below Texas

    Maverick
    0.0%
    Texas
    27.3%

    Share of land USGS rates moderate or high potential

  • Tests reported

    2

    Too few for a share

    Maverick
    2
    Needed
    30

    2008 to 2017, laboratory

  • EPA radon zone

    Zone 3

    Lower potential

    1. 1
    2. 2
    3. Zone 3

    1 highest, 3 lowest

    EPA predicts under 2 pCi/L indoors

Read a result for Maverick County

Starts at EPA's action level

4.0pCi/L

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

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 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.

Interpret this readingWhat a fix costs

The data

Maverick County, At a glance

Maverick County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Maverick County as a whole is an average indoor of less than 2 pCi/L (less than 75 Bq/m³). A low zone clears no address in it: homes above EPA's turn up in all three zones.

USGS geologic potential: Low across 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Maverick County, 2008 to 2017, laboratory

CDC holds 2 reported tests for Maverick County over the 2008 to 2017 laboratory totals, with a median of 0.1 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Maverick County beside the counties around it is how this page reads it.

What these figures count

Only 2 tests were reported to CDC for Maverick 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).

How to read these figures

Maverick County, Compared

Maverick County radon figures, compared

Calculated by Radon411

CDC's largest figure for Maverick County rests on 2 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 50.0 points and no rank or comparison is drawn from it. Results reached as high as 0.1 pCi/L, with a middle value of 0.1 pCi/L.

The nearest counties with a figure are Bexar County (119 miles away) at 6.6%, Nueces County (179 miles away) at 0.0% and Travis County (188 miles away) at 9.3%. 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 Maverick County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 100% of the county's land low radon potential.

Texas, the United States and the counties around Maverick County, 2007 to 2016, laboratory
AreaTestsAt or above 4 pCi/LMedian
Texas, pooled140 counties, pooled4,54810.4%Not pooled
United States, pooled2,666 counties, pooled1,939,02535.8%Not pooled
Randall Countyhighest in the state8471.4%6.2 pCi/L
Nueces Countylowest in the state450.0%0.6 pCi/L
Webb County, TXborders it60.0%0.6 pCi/L
The nearest Texas counties to Maverick County with 30 or more tests, 2007 to 2016, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Bexar County119 mi1976.6%0.6 pCi/L
Nueces County179 mi450.0%0.6 pCi/L
Travis County188 mi4089.3%0.8 pCi/L
Williamson County209 mi982.0%0.7 pCi/L
Bell County232 mi3514.3%1.1 pCi/L
Midland County239 mi1001.0%0.7 pCi/L
McLennan County269 mi4117.1%1.0 pCi/L
Brazos County275 mi490.0%0.2 pCi/L
Maverick County ten-year laboratory totals, against Texas' pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestTexas, pooledChange from the row before
2008 to 201720.0%0.1 pCi/L0.1 pCi/L10.2%Level
2007 to 201620.0%0.1 pCi/L0.1 pCi/L10.4%Level
2006 to 201520.0%0.1 pCi/L0.1 pCi/L11.0%Level
2005 to 201420.0%0.1 pCi/L0.1 pCi/L10.6%First on file

Pooled shares: Radon411's sum of CDC's county counts for one period.

Maverick County, Geology

The ground under Maverick County

Predicted

USGS's geologic map puts all of Maverick County's mapped land in one class: low radon potential. All of it lies in the area the map calls South Texas Plain, to which USGS gives a radon index of 7, in the low band (5 to 8).

USGS's geologic areas under Maverick County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
South Texas PlainCretaceous through Quaternary marine sandstone, shale, chalk, limestone, siltstone, clay, and lignite.Low7100%

Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.

Maverick County beside the ground around it

Across Texas 0.5% of the land is rated high; none of Maverick County's is. None of the 5 counties that border it has any moderate-potential ground either.

Share of land by USGS radon potential: Maverick County, the 5 counties bordering it and Texas
AreaEPA zoneLow potentialModerate potentialHigh potential
Maverick CountyZone 3100%NoneNone
Dimmit CountyZone 3100%NoneNone
Zavala CountyZone 3100%NoneNone
Kinney CountyZone 3100%NoneNone
Uvalde CountyZone 3100%NoneNone
Webb CountyZone 399.9%NoneNone
Texas254 counties, pooled by land areaVaries72.4%26.8%0.5%

The map rates the ground, not the air in any home.

Local help

Maverick County, Local resources

Radon testing and mitigation in Maverick County

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

Maverick County, Questions

Questions about radon in Maverick County

Are radon levels high in Maverick County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Maverick County, Texas were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.1 pCi/L. Of the 8 nearest counties with a figure, within 275 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 17.1%.

Which counties border Maverick County?

Maverick County borders 5 counties: Dimmit County, Zavala County, Kinney County, Uvalde County and Webb County.

Products

Maverick County, Products

Testing a home in Maverick County

No CDC figure names Maverick County; the nearest county with one, Bexar County (119 miles away), reported 6.6% 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 Maverick County.

Test kits and monitors3

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Best radon monitors for Maverick County homes, compared

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Maverick County, Bordering counties

Counties bordering Maverick County

Calculated by Radon411

Maverick County, Cities and towns

Cities and towns in Maverick County

The Census Bureau estimates 58,823 residents in Maverick County for July 1, 2025, 957 more than in 2020 (+1.7%). That works out to 46 people per square mile of land. Eagle Pass, its one incorporated place, has 28,926 residents, 49.2% of the total. Reported testing is thin here: 2 tests over 2008 to 2017, or under 0.1 for every 1,000 residents (2025 estimate), where Texas as a whole comes to 0.1.

Eagle Pass is the one incorporated place here; CDC publishes no figure by town, so it reads Maverick County's.

Eagle Pass, Maverick County: residents on July 1, 2025
PlaceResidentsSince 2020Share of residents
Eagle Pass28,926+2.5%49.2%

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).

Maverick County, Homes

Homes in Maverick County

Of Maverick County's 20,258 homes, 67% are detached houses, against 65% across Texas; 13% are mobile homes. Half of its homes were built before 1995, close to Texas' 1990: 8% date from before 1960 and 41% from 2000 or later. 69% 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 in Maverick County, Texas, 2019 to 2023
HomesMaverick CountyTexas
Housing units20,25811,890,808
Detached houses67%65%
In buildings of 5 or more9%21%
Mobile homes13%7%
Built before 19608%13%
Built since 200041%37%
Middle year built19951990
Owner-occupied69%63%

Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.