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Vermont Radon Map and Levels by County

Vermont'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

How to test this homeFind a certified tester

  • Share at 4+ pCi/L

    21.7%

    14.0 pts below U.S.

    Vermont
    21.7%
    U.S.
    35.7%

    10,600 tests across 14 counties, 2008 to 2017

  • Rank among states

    38 of 47

    Ten lowest states

    Vermont
    21.7%
    North Dakota
    59.3%

    By share, every state pooled the same way, 2008 to 2017

  • Counties in EPA Zone 1

    0 of 14

    None at highest potential

    Zone 1
    0
    Zone 2
    12

    Most counties sit in Zone 2; Zone 1 is the highest potential

  • Highest county

    38.1%

    Orange County

    Orange
    38.1%
    Franklin
    11.9%

    Counties with 30+ tests, 2008 to 2017

Read a result for Vermont

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. 21.7% of Vermont's reported tests reached 4 pCi/L, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Vermont, At a glance

Vermont at a glance

Predicted: EPA radon zone

14 of 14 counties classified

EPA classifies counties, not states. Of the 14 counties in Vermont with a zone, 12 are in Zone 2 and 2 in Zone 3.

  • Zone 2: Moderate predicted potential2 to 4 pCi/L12 of 14 counties · 85.7%
  • Zone 3: Lower predicted potentialless than 2 pCi/L2 of 14 counties · 14.3%

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 Vermont's radon test figures by county: 14 of its 14 counties have one. Each one's share is in the county list.

How to read these figures

Vermont, Compared

Vermont radon figures, compared

Calculated by Radon411
Vermont, 2008 to 2017, laboratory
21.7%
of 10,600 tests at or above 4 pCi/L, pooled
Against the U.S.
−14.0points
35.7% pooled
Rank among the states
38 of 47
1 is the highest share
Counties with 30 or more tests
13
Highest
38.1%
Orange County
Lowest
11.9%
Franklin County

About 2 in 10 of the 10,600 tests reported for Vermont over the 2008 to 2017 laboratory totals came back at or above 4 pCi/L (21.7%, 14 counties pooled). That is 38th of 47 states with county figures for the period; Alabama (21.9%) above it and South Carolina (19.4%) below.

By band, 3 counties at 30% to 50%, 8 counties at 15% to 30%, 2 counties at 5% to 15%. Its 13 counties with 30 or more tests run from 11.9% in Franklin County to 38.1% in Orange County; in 0 of them half or more of the reported tests reached 4 pCi/L.

EPA's 1993 map puts 0 of its 14 classified counties in Zone 1; the tests reported since bear that out at 21.7%. The national pool for the same period is 35.7%, so Vermont runs 14.0 points below the country.

Across its 4 overlapping ten-year totals, the share went from 21.6% (2005 to 2014) to 21.7% (2008 to 2017), within 2 points, with 2007 to 2016 the highest at 21.9%.

Vermont ranked among 47 states by pooled share of tests at or above 4 pCi/L, 2008 to 2017, laboratory
StateRankCountiesTestsAt or above 4 pCi/L
Arkansas33 of 475866823.2%
Nevada34 of 471610,93022.8%
Florida35 of 476253,79422.7%
North Carolina36 of 479973,13922.6%
Alabama37 of 476512,56921.9%
Vermont38 of 471410,60021.7%
South Carolina39 of 474626,48119.4%
Alaska40 of 47983018.2%
Arizona41 of 47133,58916.8%
Delaware42 of 47312,21416.7%
Oklahoma43 of 475281412.7%
Vermont's highest counties with 30 or more tests, by share at or above 4 pCi/L, 2008 to 2017, laboratory
CountyRankTestsAt or above 4 pCi/L
Orange County1 of 1346538.1%
Caledonia County2 of 1315337.3%
Grand Isle County3 of 135335.8%
Windsor County4 of 131,35826.3%
Bennington County5 of 1373325.8%
Washington County6 of 131,35725.0%
Orleans County7 of 1311424.6%
Rutland County8 of 131,06024.5%
Lamoille County9 of 1376022.4%
Addison County10 of 1343321.7%
Vermont's counties with 30 or more tests, by their own share at or above 4 pCi/L, 2008 to 2017, laboratory
ShareCountiesTheir testsFor example
50% or more00None
30% to 50%3671Orange County, Caledonia County, Grand Isle County
15% to 30%86,942Windsor County, Bennington County, Washington County
5% to 15%22,972Chittenden County, Franklin County
Under 5%00None
Vermont ten-year laboratory totals, pooled, against the United States
PeriodCountiesTestsAt or above 4 pCi/LUnited StatesChange from the row before
2008 to 20171410,60021.7%35.7%−0.1 points
2007 to 20161410,42821.9%35.8%Level
2006 to 2015149,47421.8%36.3%+0.2 points
2005 to 2014148,58821.6%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.

Vermont, Counties

Vermont counties by EPA zone

Predicted

All 14 counties, grouped by the zone EPA predicts and ordered by their reported share at or above 4 pCi/L, under Vermont's map. Each county has a page of its own.

Vermont radon map by county: EPA radon zones. Map of Vermont's 14 counties shaded by EPA radon zone: Zone 2 in amber, Zone 3 in pale sand. 0 in Zone 1, 12 in Zone 2, 2 in Zone 3.
Vermont radon map by countyEPA radon zones for Vermont's counties: 0 counties in Zone 1, 12 counties in Zone 2, 2 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 Vermont, 2008 to 2017

Zone 2: moderate predicted potential12

Local help

Vermont, Local resources

Local resources in Vermont

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

What Vermont's program says
Phone
802-863-7220

What it means

Vermont, Questions

Questions about radon in Vermont

Is radon a problem in Vermont?

Of the 14 counties in Vermont that EPA's Map of Radon Zones classifies, 0 carry Zone 1 (the highest predicted potential), 12 Zone 2 and 2 Zone 3. Pooled from 14 counties, 21.7% of the 10,600 radon tests reported to CDC over the 2008 to 2017 laboratory totals were at or above 4 pCi/L, 38th of 47 states.

Which Vermont counties have the highest radon?

Orange County 38.1% (465 tests) leads Vermont by the share of reported tests at or above 4 pCi/L, 2008 to 2017, laboratory, then Caledonia County 37.3% (153 tests), Grand Isle County 35.8% (53 tests), Windsor County 26.3% (1,358 tests), Bennington County 25.8% (733 tests).

Which EPA region is Vermont in?

Vermont is in EPA Region 1: New England.

Products

Vermont, Products

Testing a home in Vermont

21.7% of the 10,600 tests reported to CDC for Vermont over the 2008 to 2017 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 Vermont; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Vermont homes, compared

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