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Arkansas Radon Map and Levels by County

Arkansas's counties span EPA Zones 2 and 3. 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

    22.7%

    13.1 pts below U.S.

    Arkansas
    22.7%
    U.S.
    35.8%

    687 tests across 60 counties, 2007 to 2016

  • Rank among states

    35 of 47

    Middle of the states

    Arkansas
    22.7%
    North Dakota
    58.7%

    By share, every state pooled the same way, 2007 to 2016

  • Counties in EPA Zone 1

    0 of 75

    None at highest potential

    Zone 1
    0
    Zone 2
    14

    Most counties sit in Zone 3; Zone 1 is the highest potential

  • Highest county

    45.8%

    Garland County

    Garland
    45.8%
    Pulaski
    6.8%

    Counties with 30+ tests, 2007 to 2016

Read a result for Arkansas

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. 22.7% of Arkansas's reported tests reached 4 pCi/L, 2007 to 2016.

Interpret this readingWhat a fix costs

The data

Arkansas, At a glance

Arkansas at a glance

Predicted: EPA radon zone

75 of 75 counties classified

EPA classifies counties, not states. Of the 75 counties in Arkansas with a zone, 14 are in Zone 2 and 61 in Zone 3.

  • Zone 2: Moderate predicted potential2 to 4 pCi/L14 of 75 counties · 18.7%
  • Zone 3: Lower predicted potentialless than 2 pCi/L61 of 75 counties · 81.3%

An EPA radon zone predicts a whole county. It is not intended to determine whether any individual home should be tested: homes with elevated levels occur in all three zones, and EPA recommends testing every home regardless of zone.

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

CDC test figures, county by county

CDC publishes Arkansas's radon test figures by county: 61 of its 75 counties have one. Each one's share is in the county list.

How to read these figures

Arkansas, Compared

Arkansas radon figures, compared

Calculated by Radon411
Arkansas, 2007 to 2016, laboratory
22.7%
of 687 tests at or above 4 pCi/L, pooled
Against the U.S.
−13.1points
35.8% pooled
Rank among the states
35 of 47
1 is the highest share
Counties with 30 or more tests
5
Highest
45.8%
Garland County
Lowest
6.8%
Pulaski County

About 2 in 10 of the 687 tests reported for Arkansas over the 2007 to 2016 laboratory totals came back at or above 4 pCi/L (22.7%, 60 counties pooled). That is 35th of 47 states with county figures for the period; Nevada (22.9%) above it and Florida (22.7%) below.

By band, 3 counties at 30% to 50%, 2 counties at 5% to 15%. Its 5 counties with 30 or more tests run from 6.8% in Pulaski County to 45.8% in Garland County; in 0 of them half or more of the reported tests reached 4 pCi/L.

EPA's 1993 map puts 0 of its 75 classified counties in Zone 1; the tests reported since bear that out at 22.7%. The national pool for the same period is 35.8%, so Arkansas runs 13.1 points below the country.

Across its 4 overlapping ten-year totals, the share went from 24.3% (2005 to 2014) to 23.2% (2008 to 2017), within 2 points, with 2005 to 2014 the highest at 24.3%.

Arkansas ranked among 47 states by pooled share of tests at or above 4 pCi/L, 2007 to 2016, laboratory
StateRankCountiesTestsAt or above 4 pCi/L
Georgia30 of 4713729,45523.9%
Massachusetts31 of 4714248,79823.6%
Rhode Island32 of 47536,35723.5%
North Carolina33 of 479970,56623.2%
Nevada34 of 471610,68422.9%
Arkansas35 of 476068722.7%
Florida36 of 476246,50822.7%
Alabama37 of 476313,18822.0%
Vermont38 of 471410,42821.9%
Alaska39 of 471078520.0%
South Carolina40 of 474625,75519.3%
Arkansas' highest counties with 30 or more tests, by share at or above 4 pCi/L, 2007 to 2016, laboratory
CountyRankTestsAt or above 4 pCi/L
Garland County1 of 54845.8%
Saline County2 of 54731.9%
Benton County3 of 514531.0%
Washington County4 of 55614.3%
Pulaski County5 of 51036.8%
Arkansas' counties with 30 or more tests, by their own share at or above 4 pCi/L, 2007 to 2016, laboratory
ShareCountiesTheir testsFor example
50% or more00None
30% to 50%3240Garland County, Saline County, Benton County
15% to 30%00None
5% to 15%2159Washington County, Pulaski County
Under 5%00None
Arkansas ten-year laboratory totals, pooled, against the United States
PeriodCountiesTestsAt or above 4 pCi/LUnited StatesChange from the row before
2008 to 20175866823.2%35.7%+0.5 points
2007 to 20166068722.7%35.8%+0.3 points
2006 to 20156066822.5%36.3%−1.8 points
2005 to 20145763524.3%36.0%First on file

Pooled shares: Radon411's sum of CDC's county counts for one period. CDC publishes no state or national figure.

Arkansas, Counties

Arkansas counties by EPA zone

Predicted

The map of Arkansas, then its 75 counties zone by zone, each with its reported share at or above 4 pCi/L and a report of its own.

Arkansas radon map by county: EPA radon zones. Map of Arkansas's 75 counties shaded by EPA radon zone: Zone 2 in amber, Zone 3 in pale sand. 0 in Zone 1, 14 in Zone 2, 61 in Zone 3.
Arkansas radon map by countyEPA radon zones for Arkansas's counties: 0 counties in Zone 1, 14 counties in Zone 2, 61 counties in Zone 3.A prediction for each county, not a reading of any home; elevated homes occur in all three zones.

The 5 highest in Arkansas, 2007 to 2016

Zone 2: moderate predicted potential14

Local help

Arkansas, Local resources

Local resources in Arkansas

Who to ask in Arkansas: its radon program, test kits and professionals.

What Arkansas's program says
Phone
501-661-2621
Email
ADH.EPI.Radon@arkansas.gov

What it means

Arkansas, Questions

Questions about radon in Arkansas

Is radon a problem in Arkansas?

Arkansas has 75 counties on EPA's Map of Radon Zones: Zone 1, the highest predicted potential, for 0; Zone 2 for 14; Zone 3 for 61. Pooled from 60 counties, 22.7% of the 687 radon tests reported to CDC over the 2007 to 2016 laboratory totals were at or above 4 pCi/L, 35th of 47 states.

Which Arkansas counties have the highest radon?

By the share of reported tests at or above 4 pCi/L, 2007 to 2016, laboratory: Garland County 45.8% (48 tests), Saline County 31.9% (47 tests), Benton County 31.0% (145 tests), Washington County 14.3% (56 tests), Pulaski County 6.8% (103 tests).

Which EPA region is Arkansas in?

Arkansas is in EPA Region 6: South Central.

Products

Arkansas, Products

Testing a home in Arkansas

22.7% of the 687 tests reported to CDC for Arkansas over the 2007 to 2016 laboratory totals reached 4 pCi/L: a short-term kit (2 to 90 days) gives a first answer in days, a long-term test the year-round average. A short-term kit (2 to 90 days) is the quick first check for a home in Arkansas; a long-term test tells the year-round average.

Test kits and monitors3

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Best radon monitors for Arkansas homes, compared

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