Skip to content
RADON411

Locations and reports

Nebraska Radon Map and Levels by County

Nebraska's counties span all three EPA radon zones. 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

    47.4%

    16.2 pts above U.S.

    Nebraska
    47.4%
    U.S.
    31.2%

    67,491 tests across 89 counties, 2016

  • Rank among states

    1 of 19

    Ten highest states

    Nebraska
    47.4%
    Nebraska
    47.4%

    By share, every state pooled the same way, 2016

  • Counties in EPA Zone 1

    53 of 93

    Most at highest potential

    Zone 1
    53
    Zone 2
    24

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

  • Highest county

    85.5%

    Dixon County

    Dixon
    85.5%
    Sheridan
    20.0%

    Counties with 30+ tests, 2016

Read a result for Nebraska

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. 47.4% of Nebraska's reported tests reached 4 pCi/L, 2016.

Interpret this readingWhat a fix costs

The data

Nebraska, At a glance

Nebraska at a glance

Predicted: EPA radon zone

93 of 93 counties classified

EPA classifies counties, not states. Of the 93 counties in Nebraska with a zone, 53 are in Zone 1, 24 in Zone 2 and 16 in Zone 3.

  • Zone 1: Highest predicted potentialgreater than 4 pCi/L53 of 93 counties · 57.0%
  • Zone 2: Moderate predicted potential2 to 4 pCi/L24 of 93 counties · 25.8%
  • Zone 3: Lower predicted potentialless than 2 pCi/L16 of 93 counties · 17.2%

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 Nebraska's radon test figures by county: 93 of its 93 counties have one. Each one's share is in the county list.

How to read these figures

Nebraska, Compared

Nebraska radon figures, compared

Calculated by Radon411
Nebraska, 2016
47.4%
of 67,491 tests at or above 4 pCi/L, pooled
Against the U.S.
+16.2points
31.2% pooled
Rank among the states
1 of 19
1 is the highest share
Counties with 30 or more tests
71
Highest
85.5%
Dixon County
Lowest
20.0%
Sheridan County

Pooled across 89 counties, 47.4% of the 67,491 radon tests reported to CDC for Nebraska in 2016 were at or above 4 pCi/L: close to half or more. That is 1st of 19 states with county figures for the period; Wisconsin (45.2%) below.

Its 71 counties with 30 or more tests run from 20.0% in Sheridan County to 85.5% in Dixon County; in 45 of them half or more of the reported tests reached 4 pCi/L. By band, 45 counties at 50% or more, 21 counties at 30% to 50%, 5 counties at 15% to 30%.

The national pool for the same period is 31.2%, so Nebraska runs 16.2 points above the country. EPA's 1993 map puts 53 of its 93 classified counties in Zone 1; the tests reported since bear that out at 47.4%.

Year by year (10 years pooled), the share went from 50.5% (2014) to 38.2% (2023), down 12.3 points, with 2015 the highest at 53.3%.

Nebraska ranked among 19 states by pooled share of tests at or above 4 pCi/L, 2016
StateRankCountiesTestsAt or above 4 pCi/L
Nebraska1 of 198967,49147.4%
Wisconsin2 of 197118,76645.2%
Connecticut3 of 1985,21745.1%
Utah4 of 19288,77539.8%
Colorado5 of 195612,07338.5%
Minnesota6 of 198733,89937.0%
Kansas7 of 199917,39435.4%
Pennsylvania8 of 1967100,43634.4%
Alaska9 of 1998932.6%
Missouri10 of 19984,25629.8%
Florida11 of 19489,60424.3%
Nebraska's highest and lowest counties with 30 or more tests, by share at or above 4 pCi/L, 2016
CountyRankTestsAt or above 4 pCi/L
Dixon County1 of 7120785.5%
Clay County2 of 7114779.6%
Franklin County3 of 7112676.2%
Gosper County4 of 719675.0%
Cedar County5 of 7144174.8%
Webster County6 of 7110273.5%
Burt County7 of 7141473.2%
Richardson County8 of 7140572.6%
Hamilton County9 of 7134572.2%
Knox County10 of 7121971.2%
Sheridan County71 of 714520.0%
Lincoln County70 of 711,10420.7%
Merrick County69 of 7111421.1%
Hall County68 of 711,15525.7%
Garfield County67 of 713327.3%
Nebraska's counties with 30 or more tests, by their own share at or above 4 pCi/L, 2016
ShareCountiesTheir testsFor example
50% or more4514,991Dixon County, Clay County, Franklin County
30% to 50%2149,842Dodge County, Platte County, Phelps County
15% to 30%52,451Garfield County, Hall County, Merrick County
5% to 15%00None
Under 5%00None
Nebraska pooled by year, against the United States
YearCountiesTestsAt or above 4 pCi/LUnited StatesChange from the row before
20238611,16338.2%33.4%+4.2 points
20228211,19334.0%23.9%−0.9 points
20218338,37034.9%24.4%−7.3 points
20208845,51642.2%25.5%−2.1 points
20198951,85844.3%29.0%−0.2 points
20188562,67644.5%29.1%−3.2 points
20179265,66747.7%31.7%+0.3 points
20168967,49147.4%31.2%−5.9 points
20158961,36253.3%35.5%+2.7 points
20148556,51750.5%34.9%First on file

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

Nebraska, Counties

Nebraska counties by EPA zone

Predicted

The map of Nebraska, then its 93 counties zone by zone, each with its reported share at or above 4 pCi/L and a report of its own.

Nebraska radon map by county: EPA radon zones. Map of Nebraska's 93 counties shaded by EPA radon zone: Zone 1 in red-orange, Zone 2 in amber, Zone 3 in pale sand. 53 in Zone 1, 24 in Zone 2, 16 in Zone 3.
Nebraska radon map by countyEPA radon zones for Nebraska's counties: 53 counties in Zone 1, 24 counties in Zone 2, 16 counties in Zone 3.A prediction for each county, not a reading of any home; elevated homes occur in all three zones.

The 12 highest in Nebraska, 2016

Zone 1: highest predicted potential53

Local help

Nebraska, Local resources

Local resources in Nebraska

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

What Nebraska's program says
Phone
(402) 471-1005
Licensing of radon professionals
If radon testing is done in schools, offices, or other places of work, it must be done by a licensed radon measurement business.

What it means

Nebraska, Questions

Questions about radon in Nebraska

Is radon a problem in Nebraska?

Nebraska has 93 counties on EPA's Map of Radon Zones: Zone 1, the highest predicted potential, for 53; Zone 2 for 24; Zone 3 for 16. Pooled from 89 counties, 47.4% of the 67,491 radon tests reported to CDC in 2016 were at or above 4 pCi/L, 1st of 19 states.

Who does radon mitigation in Nebraska?

Radon411's Nebraska directory lists 116 radon businesses for testing, mitigation or both, each with the licensing list it was read from.

Which Nebraska counties are in EPA radon Zone 1?

53 counties are in Zone 1: Adams County, Boone County, Boyd County, Burt County, Butler County, Cass County, Cedar County, Clay County, and 45 more in the county table on this page.

Which Nebraska counties have the highest radon?

By the share of reported tests at or above 4 pCi/L, 2016: Dixon County 85.5% (207 tests), Clay County 79.6% (147 tests), Franklin County 76.2% (126 tests), Gosper County 75.0% (96 tests), Cedar County 74.8% (441 tests).

Which EPA region is Nebraska in?

Nebraska is in EPA Region 7: Midwest.

Products

Nebraska, Products

Testing a home in Nebraska

47.4% of the 67,491 tests reported to CDC for Nebraska in 2016 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 Nebraska; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Nebraska homes, compared

Explore

Cities in Nebraska with their own page

Radon data is published by county, not by city. Each city page sets the figures of the counties the city lies in side by side.