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Radon Levels in Beaver County, Utah

EPA puts Beaver County in Zone 2, its middle radon zone, and high results are common there: 66.7% of the 42 radon tests reported to CDC (2023) came back at or above 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

How to test this homeFind a certified tester

  • Share at 4+ pCi/L

    66.7%

    30.6 pts above UT

    Beaver
    66.7%
    Utah
    36.1%

    42 tests, 2023

  • Median result

    9.3pCi/L

    Action level reached

    Beaver
    9.3 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2023

  • Tests reported

    42

    21st of 22 by tests

    Beaver
    42
    Salt Lake
    9,658

    Reported to CDC before any fix, 2023

  • EPA radon zone

    Zone 2

    Moderate potential

    1. 1
    2. Zone 2
    3. 3

    1 highest, 3 lowest

    EPA predicts 2 to 4 pCi/L indoors

  • Rank in Utah

    1 of 22

    Top quarter

    Beaver
    66.7%
    Beaver
    66.7%

    By share, of 22 with 30+ tests

Read a result for Beaver County

Starts at Beaver County's median, 9.3 pCi/L

9.3pCi/L

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

EPA’s reading of 9.3 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. Beaver County's median reported result, 2023.

Interpret this readingWhat a fix costs

The data

Beaver County, At a glance

Beaver County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Beaver County is a county: EPA's forecast for it as a whole is an average indoor of 2 to 4 pCi/L (75 to 150 Bq/m³). It describes no single address, and homes above EPA's are found in every zone, this one included.

USGS geologic potential: Moderate across 85% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Beaver County, 2023

Share of reported tests at or above 4 pCi/L, by year, Beaver County
Share of reported tests at or above 4 pCi/L, by year, Beaver County
YearShare of reported tests at or above 4 pCi/L
201480.0%
2015100.0%
201669.2%
201744.4%
201860.0%
201966.7%
202033.3%
2021100.0%
202288.9%
202366.7%

2023: 66.7%. Across these years the share ran from 33.3% to 100.0%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

These are the 42 tests reported to CDC for Beaver County over 2023, many from homes being sold or already suspected of a problem: they describe the county's reported tests, not this house.

Measured: CDC tracking data. Figure above: 2023. Measured data period: 2005 to 2023 (every CDC figure on file).

How to read these figures

Beaver County, Compared

Beaver County radon figures, compared

Calculated by Radon411

More than half: 66.7% of the 42 radon tests reported to CDC for Beaver County in 2023 read at least 4 pCi/L. That places it 1st of 22 Utah counties with 30 or more tests for the same period. That is 30.6 points above the 36.1% pooled from 29 Utah counties.

The median result, 9.3 pCi/L, sits above EPA's 4 pCi/L action level, and the top reported result was 209.9 pCi/L. The rest split 16.7% under 2 pCi/L and 16.7% from 2 to 4 (Utah: 35.4% and 28.5%). The reported tests do not follow EPA's Zone 2 label for Beaver County (predicted average between 2 and 4 pCi/L): 66.7% of them reached 4 pCi/L, fewer than that label suggests.

No bordering county with a figure for the same period reported a higher share; the closest is Millard County at 58.2%, the lowest Iron County at 21.1%. Statewide for the same period, Juab County reported the highest share (63.3%) and Washington County the lowest (9.9%).

The busiest year on file was 2022, with 81 tests reported; the quietest, 2021, had 3.

Nationally, every county with a figure for the same period pools to 33.4%; Beaver County sits 33.3 points above it. CDC also counts 8 tests taken after mitigation in Beaver County for the same period: tests in homes where a fix was already in.

Beaver County against Utah, the United States and nearby counties, 2023
AreaTestsAt or above 4 pCi/LMedianDifference from Beaver County
Beaver County4266.7%9.3 pCi/LThis county
Utah, pooled29 counties, pooled27,42236.1%Not pooled−30.6 points
United States, pooled642 counties, pooled128,74033.4%Not pooled−33.3 points
Juab Countyhighest in the state4963.3%5.0 pCi/L−3.4 points
Washington Countylowest in the state6579.9%1.3 pCi/L−56.8 points
Millard County, UTborders it5558.2%4.4 pCi/L−8.5 points
Sevier County, UTborders it10157.4%4.9 pCi/L−9.3 points
Garfield County, UTborders it1540.0%3.7 pCi/L−26.7 points
Iron County, UTborders it21321.1%2.1 pCi/L−45.6 points
Piute County, UTborders it10.0%3.3 pCi/L−66.7 points
Where Beaver County's reported results fell, 2023, beside Utah and the United States
ResultBeaver County testsBeaver County shareUtah shareU.S. shareAgainst Utah
Under 2 pCi/L716.7%35.4%41.4%−18.7 points
2 to 4 pCi/L716.7%28.5%25.2%−11.8 points
4 pCi/L and above2866.7%36.1%33.4%+30.6 points
Beaver County ranked among the 22 Utah counties with 30 or more tests, by share at or above 4 pCi/L, 2023
CountyRankTestsAt or above 4 pCi/LMedian
Beaver County1 of 224266.7%9.3 pCi/L
Juab County2 of 224963.3%5.0 pCi/L
Sanpete County3 of 2215060.0%4.6 pCi/L
Morgan County4 of 2220759.4%5.0 pCi/L
Millard County5 of 225558.2%4.4 pCi/L
Box Elder County6 of 2244957.9%4.9 pCi/L
Sevier County7 of 2210157.4%4.9 pCi/L
Cache County8 of 2299453.8%4.4 pCi/L
Wasatch County9 of 2232451.9%4.2 pCi/L
Uintah County10 of 2210451.0%4.2 pCi/L
Tooele County11 of 2257351.0%4.1 pCi/L
Beaver County radon tests by year, against Utah's pooled share
YearTestsAt or above 4 pCi/LMedianHighestUtah, pooledChange from the row before
20234266.7%9.3 pCi/L209.9 pCi/L36.1%−22.2 points
20228188.9%18.0 pCi/L232.8 pCi/L37.7%−11.1 points
20213100.0%6.2 pCi/L21.2 pCi/L34.2%+66.7 points
2020333.3%2.0 pCi/L18.8 pCi/L37.6%−33.4 points
2019366.7%15.3 pCi/L43.9 pCi/L37.7%+6.7 points
2018560.0%6.8 pCi/L103.1 pCi/L36.6%+15.6 points
20171844.4%3.5 pCi/L150.9 pCi/L38.2%−24.8 points
20161369.2%6.1 pCi/L47.5 pCi/L39.8%−30.8 points
20153100.0%10.8 pCi/L95.3 pCi/L42.3%+20.0 points
20141080.0%7.1 pCi/L71.3 pCi/L43.4%First on file

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

Beaver County, Geology

The ground under Beaver County

Predicted

Most of the ground under Beaver County is one class on USGS's geologic map: 85.3% of its land is moderate radon potential, with 14.7% high. The map puts 85.2% of Beaver County in the area it calls Basin and Range and 14.6% in High Plateau. USGS gives the first a radon index of 11, in the moderate band (9 to 11), and the second 13, in the high band (12 to 17).

USGS's geologic areas under Beaver County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Basin and RangeQuaternary sedimentary and igneous rocks.Moderate1185.2%
High PlateauTertiary volcanic and volcaniclastic rocks.High1314.6%

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

Beaver County beside the ground around it

Utah as a whole has more high-potential ground than Beaver County: 32.8% of its land, against 14.7% here. Of the 6 counties that border it, 5 have more high-potential ground, Piute County the most at 100%.

Share of land by USGS radon potential: Beaver County, the 6 counties bordering it and Utah
AreaEPA zoneLow potentialModerate potentialHigh potential
Beaver CountyZone 2None85.3%14.7%
Iron CountyZone 2None63.7%36.3%
Millard CountyZone 2None90.7%9.3%
Piute CountyZone 1NoneNone100%
Sevier CountyZone 1None3.3%96.7%
Garfield CountyZone 2None67.9%32.1%
Lincoln County, NVZone 19.2%63.7%27.1%
Utah29 counties, pooled by land areaVariesNone67.2%32.8%

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

Local help

Beaver County, Local resources

Radon testing and mitigation in Beaver County

What Utah's program says
Phone
(801) 536-0091
Disclosure when a home is sold or rented
Utah requires that sellers disclose "Hazardous Conditions: Are there any hazardous conditions on the Property such as Radon gas in house or well?"

What it means

Beaver County, Questions

Questions about radon in Beaver County

Are radon levels high in Beaver County?

In 2023, 66.7% of the radon tests reported to CDC for Beaver County, Utah were at or above 4 pCi/L, and the median reported pre-mitigation result was 9.3 pCi/L. Of 22 Utah counties with 30 or more tests for the same period, none reported a higher share; pooled, the state comes to 36.1%.

Which counties border Beaver County?

Beaver County borders 6 counties: Iron County, UT, Millard County, UT, Piute County, UT, Sevier County, UT, Garfield County, UT and Lincoln County, NV.

Products

Beaver County, Products

Testing a home in Beaver County

In Beaver County, 66.7% of 42 tests reported to CDC in 2023 reached 4 pCi/L, against 36.1% pooled across Utah. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Beaver County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Beaver County homes, compared

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Beaver County, Bordering counties

Counties bordering Beaver County

Calculated by Radon411

Beaver County, Cities and towns

Cities and towns in Beaver County

The Census Bureau estimates 7,301 residents in Beaver County for July 1, 2025, 212 more than in 2020 (+3.0%). Spread over its land, that is 2.8 people to the square mile. Beaver alone is home to 3,699 of them, 50.7% of the total. Together its 3 incorporated places hold 81.7% of those residents; the other 18.3% live outside any of them. CDC's 42 reported tests for 2023 work out to 5.8 per 1,000 residents (2025 estimate), close to Utah's 7.7.

From Beaver to Minersville, CDC publishes no figure by town: each reads Beaver County's.

The cities and towns in Beaver County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Beaver3,699+2.8%50.7%
Milford1,401−2.1%19.2%
Minersville866+6.7%11.9%

3 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).

Beaver County, Homes

Homes in Beaver County

Beaver County is a place of houses on their own lots: 93% of its 2,928 homes are detached single-family houses, against 67% across Utah. The homes are older than Utah's as a whole: half were built before 1975 (1991 for Utah), and 39% date from before 1960. Owners live in 82% of the occupied homes (Utah: 71%), so for most households a test and a fix are their own to order.

Homes in Beaver County, Utah, 2019 to 2023
HomesBeaver CountyUtah
Housing units2,9281,193,082
Detached houses93%67%
In buildings of 5 or more1%16%
Mobile homes5%3%
Built before 196039%16%
Built since 200016%37%
Middle year built19751991
Owner-occupied82%71%

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