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Radon Levels in Andrews County, Texas

EPA puts Andrews 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

  • Highest bordering

    13.3%

    Lea County

    Lea
    13.3%
    Midland
    1.0%

    2 of 6 neighbours have 30+ tests, 2007 to 2016

  • Nearest county

    1.0%

    Midland County, 47 miles

    Midland
    1.0%
    Texas
    10.4%

    Share at 4+ pCi/L, 100 tests, 2007 to 2016

  • Ground above low

    0.1%

    27.2 pts below Texas

    Andrews
    0.1%
    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. 1
    2. 2
    3. Zone 3

    1 highest, 3 lowest

    EPA predicts under 2 pCi/L indoors

Read a result for Andrews 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.

The data

Andrews County, At a glance

Andrews County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Andrews 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

No CDC test figures here

CDC has published no radon test figures for Andrews County. Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Lea County, NM reported the largest share at or above 4 pCi/L, 13.3%, and Midland County the smallest, 1.0%.

How to read these figures

Andrews County, Compared

Andrews County radon figures, compared

Calculated by Radon411

No CDC figure names Andrews County, in any year or ten-year total; over the 2007 to 2016 laboratory totals, the agency's counts reach 140 Texas counties without it. Pooled across 140 Texas counties, 10.4% of reported tests reached that level; across every county in the country with a figure, 35.8%.

Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Lea County, NM reported the largest share at or above 4 pCi/L, 13.3%, and Midland County the smallest, 1.0%. Farther out, Lubbock County (102 miles away) at 57.8%, Randall County (188 miles away) at 71.4% and El Paso County (214 miles away) at 0.0% have figures too. 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 Andrews 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 Andrews 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
Lea County, NMborders it3013.3%2.2 pCi/L
Midland County, TXborders it1001.0%0.7 pCi/L
Ector County, TXborders it270.0%0.7 pCi/L
The nearest Texas counties to Andrews County with 30 or more tests, 2007 to 2016, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Midland County47 mi1001.0%0.7 pCi/L
Lubbock County102 mi12857.8%4.8 pCi/L
Randall County188 mi8471.4%6.2 pCi/L
El Paso County214 mi550.0%0.7 pCi/L
Potter County218 mi7020.0%1.1 pCi/L
Tarrant County314 mi31210.6%0.9 pCi/L
Bexar County314 mi1976.6%0.6 pCi/L
Bell County316 mi3514.3%1.1 pCi/L

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

Andrews County, Geology

The ground under Andrews County

Predicted

Most of the ground under Andrews County is one class on USGS's geologic map: 99.9% of its land is low radon potential, with 0.1% moderate. All of it lies in the area the map calls Southern High Plains and Plateaus, to which USGS gives a radon index of 7, in the low band (5 to 8).

USGS's geologic areas under Andrews County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Southern High Plains and PlateausPaleozoic and Mesozoic sandstone, limestone, shale.Low799.9%

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

Andrews County beside the ground around it

Across Texas 0.5% of the land is rated high; none of Andrews County's is. Of the 6 counties that border it, 3 have more moderate-potential ground, Lea County, NM the most at 88.3%.

Share of land by USGS radon potential: Andrews County, the 6 counties bordering it and Texas
AreaEPA zoneLow potentialModerate potentialHigh potential
Andrews CountyZone 399.9%0.1%None
Gaines CountyZone 399.8%0.2%None
Ector CountyZone 3100%NoneNone
Martin CountyZone 3100%NoneNone
Winkler CountyZone 3100%NoneNone
Midland CountyZone 394.9%5.1%None
Lea County, NMZone 211.7%88.3%None
Texas254 counties, pooled by land areaVaries72.4%26.8%0.5%

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

Local help

Andrews County, Local resources

Radon testing and mitigation in Andrews County

What it means

Andrews County, Questions

Questions about radon in Andrews County

Are radon levels high in Andrews County?

No CDC testing statistics are published here for Andrews County, Texas yet. Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Lea County, NM reported the largest share at or above 4 pCi/L, 13.3%, and Midland County the smallest, 1.0%.

Which counties border Andrews County?

Andrews County borders 6 counties: Gaines County, TX, Ector County, TX, Martin County, TX, Winkler County, TX, Midland County, TX and Lea County, NM.

Products

Andrews County, Products

Testing a home in Andrews County

No CDC figure names Andrews County; the nearest county with one, Midland County (47 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 Andrews County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Andrews County homes, compared

Explore

Andrews County, Bordering counties

Counties bordering Andrews County

Calculated by Radon411

Andrews County, Cities and towns

Cities and towns in Andrews County

The Census Bureau estimates 18,914 residents in Andrews County for July 1, 2025, 298 more than in 2020 (+1.6%). That works out to 13 people per square mile of land. Andrews, its one incorporated place, has 13,665 residents, 72.2% of the total. CDC publishes no radon test count for Andrews County; across Texas its counts for 2007 to 2016 come to 0.1 tests for every 1,000 residents (2025 estimate).

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

Andrews, Andrews County: residents on July 1, 2025
PlaceResidentsSince 2020Share of residents
Andrews13,665+1.1%72.2%

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).

Andrews County, Homes

Homes in Andrews County

Of Andrews County's 7,063 homes, 69% are detached houses, against 65% across Texas; 23% are mobile homes. The homes are older than Texas' as a whole: half were built before 1981 (1990 for Texas), and 22% date from before 1960. Owners live in 76% of the occupied homes (Texas: 63%), so for most households a test and a fix are their own to order.

Homes in Andrews County, Texas, 2019 to 2023
HomesAndrews CountyTexas
Housing units7,06311,890,808
Detached houses69%65%
In buildings of 5 or more3%21%
Mobile homes23%7%
Built before 196022%13%
Built since 200026%37%
Middle year built19811990
Owner-occupied76%63%

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