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Radon Levels in Ector County, Texas

EPA puts Ector County in Zone 3, its lowest radon zone, and only 27 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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  • Share at 4+ pCi/L

    3.2%

    7.4 pts below TX

    Ector
    3.2%
    Texas
    10.6%

    31 tests, 2005 to 2014

  • Median result

    0.7pCi/L

    Below action level

    Ector
    0.7 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2005 to 2014

  • Tests reported

    31

    22nd of 22 by tests

    Ector
    31
    Harris
    647

    Reported to CDC before any fix, 2005 to 2014

  • 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

  • Rank in Texas

    17 of 22

    Middle half

    Ector
    3.2%
    Randall
    62.8%

    By share, of 22 with 30+ tests

Read a result for Ector County

Starts at Ector County's median, 0.7 pCi/L

0.7pCi/L

EPA’s own thresholds; the figures are the area’s, never this home’s.

EPA’s reading of 0.7 pCi/L

Below 2 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 below 2 pCi/L, the level at which EPA says a fix should be considered. Ector County's median reported result, 2005 to 2014.

Interpret this reading

The data

Ector County, At a glance

Ector County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Ector 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 Ector County, 2008 to 2017, laboratory

CDC holds 27 reported tests for Ector County over the 2008 to 2017 laboratory totals, with a median of 0.7 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Ector County beside the counties around it is how this page reads it.

What these figures count

Only 27 tests were reported to CDC for Ector 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

Ector County, Compared

Ector County radon figures, compared

Calculated by Radon411

Only 1 of 31 radon tests reported for Ector County over the 2005 to 2014 laboratory totals reached 4 pCi/L (3.2%). The median result, 0.7 pCi/L, sits below 2, well under EPA's 4 pCi/L action level, and the top reported result was 17.6 pCi/L.

The newest figure, over the 2008 to 2017 laboratory totals, counts only 27 tests (0.0% at or above 4 pCi/L), too few to compare, so this reading uses the 31-test figure.

Across 140 Texas counties pooled together, 10.6% of tests reached that level, so Ector County runs 7.4 points below its state. Against the national pool of 36.0%, the gap is 32.8 points lower. Its place in the state: 17th of 22 Texas counties with 30 or more tests for the same period.

Zone 3 on EPA's map (predicted average under 2 pCi/L) and a 3.2% share point the same way here. Midland County, the one bordering county with a figure for the same period, reported 1.1%.

Below the action level, 27 tests (87.1%) came in under 2 pCi/L, against 79.4% statewide, and 3 tests (9.7%) fell between 2 and 4, against 10.0% statewide. USGS geology rates 100% of the county's land low radon potential.

CDC's ten-year totals for Ector County went from 31 tests (2005 to 2014) to 27 (2008 to 2017), the share going from 3.2% to 0.0%.

Ector County against Texas, the United States and nearby counties, 2005 to 2014, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Ector County
Ector County313.2%0.7 pCi/LThis county
Texas, pooled140 counties, pooled3,72110.6%Not pooled+7.4 points
United States, pooled2,655 counties, pooled1,669,35336.0%Not pooled+32.8 points
Randall Countyhighest in the state9462.8%5.6 pCi/L+59.6 points
Brazos Countylowest in the state540.0%0.5 pCi/L−3.2 points
Midland County, TXborders it931.1%0.7 pCi/L−2.1 points
Where Ector County's reported results fell, 2005 to 2014, laboratory, beside Texas and the United States
ResultEctor County testsEctor County shareTexas shareU.S. shareAgainst Texas
Under 2 pCi/L2787.1%79.4%39.8%+7.7 points
2 to 4 pCi/L39.7%10.0%24.2%−0.3 points
4 pCi/L and above13.2%10.6%36.0%−7.4 points
Ector County ranked among the 22 Texas counties with 30 or more tests, by share at or above 4 pCi/L, 2005 to 2014, laboratory
CountyRankTestsAt or above 4 pCi/LMedian
Tarrant County12 of 222876.6%0.9 pCi/L
Brazoria County13 of 22355.7%0.2 pCi/L
Bexar County14 of 221564.5%0.6 pCi/L
Harris County15 of 226473.9%0.2 pCi/L
Fort Bend County16 of 221103.6%0.2 pCi/L
Ector County17 of 22313.2%0.7 pCi/L
Williamson County18 of 22643.1%0.8 pCi/L
Midland County19 of 22931.1%0.7 pCi/L
El Paso County20 of 22610.0%0.7 pCi/L
Galveston County20 of 22590.0%0.2 pCi/L
Brazos County20 of 22540.0%0.5 pCi/L
Ector County ten-year laboratory totals, against Texas' pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestTexas, pooledChange from the row before
2008 to 2017270.0%0.7 pCi/L2.8 pCi/L10.2%Level
2007 to 2016270.0%0.7 pCi/L2.8 pCi/L10.4%Level
2006 to 2015290.0%0.7 pCi/L3.8 pCi/L11.0%−3.2 points
2005 to 2014313.2%0.7 pCi/L17.6 pCi/L10.6%First on file

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

Ector County, Geology

The ground under Ector County

Predicted

USGS's geologic map puts all of Ector County's mapped land in one class: low radon potential. 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 Ector County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Southern High Plains and PlateausPaleozoic and Mesozoic sandstone, limestone, shale.Low7100%

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

Ector County beside the ground around it

Across Texas 0.5% of the land is rated high; none of Ector County's is. Of the 6 counties that border it, 5 have more moderate-potential ground, Upton County the most at 58.8%.

Share of land by USGS radon potential: Ector County, the 6 counties bordering it and Texas
AreaEPA zoneLow potentialModerate potentialHigh potential
Ector CountyZone 3100%NoneNone
Crane CountyZone 399.1%0.9%None
Midland CountyZone 394.9%5.1%None
Andrews CountyZone 399.9%0.1%None
Winkler CountyZone 3100%NoneNone
Upton CountyZone 341.2%58.8%None
Ward CountyZone 394.5%5.5%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

Ector County, Local resources

Radon testing and mitigation in Ector 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

Ector County, Questions

Questions about radon in Ector County

Are radon levels high in Ector County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Ector County, Texas were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.7 pCi/L. Of 22 Texas counties with 30 or more tests for the same period, 16 reported a higher share; pooled, the state comes to 10.6%.

Which counties border Ector County?

Ector County borders 6 counties: Crane County, Midland County, Andrews County, Winkler County, Upton County and Ward County.

Products

Ector County, Products

Testing a home in Ector County

In Ector County, 3.2% of 31 tests reported to CDC over the 2005 to 2014 laboratory totals reached 4 pCi/L, against 10.6% pooled across Texas. 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 Ector County.

Test kits and monitors3

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Best radon monitors for Ector County homes, compared

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Ector County, Bordering counties

Counties bordering Ector County

Calculated by Radon411

Ector County, Cities and towns

Cities and towns in Ector County

Ector County is growing: the Census Bureau puts it at 173,801 residents on July 1, 2025, up 5.0% from 165,491 in 2020. That works out to 194 people per square mile of land. Odessa, the largest place on its list (122,707 residents in all), extends beyond Ector County, so no share of the total is worked out for it. Testing is reported here more often than across the state: CDC's 31 reported tests for 2005 to 2014 come to 0.2 for every 1,000 residents (2025 estimate), against 0.1 for Texas.

From Odessa to Goldsmith, CDC publishes no figure by town: each reads Ector County's.

The cities and towns in Ector County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Odessaextends beyond Ector County122,707+6.8%Counted whole
Goldsmith235−2.5%0.1%

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). A place that extends beyond Ector County is counted whole, so it has no share.

Ector County, Homes

Homes in Ector County

Of Ector County's 67,542 homes, 59% are detached houses, against 65% across Texas; 18% are mobile homes. The homes are older than Texas' as a whole: half were built before 1981 (1990 for Texas), and 23% date from before 1960. 64% 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 Ector County, Texas, 2019 to 2023
HomesEctor CountyTexas
Housing units67,54211,890,808
Detached houses59%65%
In buildings of 5 or more17%21%
Mobile homes18%7%
Built before 196023%13%
Built since 200026%37%
Middle year built19811990
Owner-occupied64%63%

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