22%tests ≥ 4 pCi/L
433tests on record
1.7median pCi/L
Zone 2EPA zone (1993 prediction)

Test results in Addison County

ResultShareEPA guidance
Below 2 pCi/L54%Below EPA's levels
2 to 4 pCi/L24%Consider fixing
4 pCi/L or more22%EPA recommends fixing

What the data shows

Where Addison County sits among Vermont's 14 counties with dataEach dot is a county's share of tests at or above 4 pCi/L · Radon test results from laboratories, 2008–2017
0%10%20%30%40%

How Addison County compares

Addison County ranks 6 of 8 among its neighboursShare of tests at or above 4 pCi/L · Radon test results from laboratories, 2008–2017 · whisker: 95% range
Orange County38%Windsor County26%Washington County, New Yo…26%Washington County25%Rutland County25%Addison County22%Chittenden County14%Essex County, New York11%Vermont 22%
Data table
AreaTests ≥ 4 pCi/LTests
Orange County38%465
Windsor County26%1,358
Washington County, New York26%1,593
Washington County25%1,357
Rutland County25%1,060
Addison County22%433
Chittenden County14%2,711
Essex County, New York11%133
Vermont (14 counties)22%10,600

Same source as Addison County.

What it means for your home

About 1 in 5 results in Addison County were at or above 4 pCi/L, where the EPA recommends a fix. Only a test shows your own home's level.

Levels in pCi/L from the EPA. The WHO reference level is 100 Bq/m³, about 2.7 pCi/L.

Test your home

Start with a short-term test (2–90 days) and confirm a result of 4 pCi/L or more with a second test. EPA guide

Sponsored: we earn a commission on purchases through these links. We haven't tested Airthings monitors yet.

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Fixing high radon

No local job records yet. National range: $800–$2,500, average $1,200 (EPA, 2003). Cost guide →

About this data

Source: Radon test results from laboratories (CDC Environmental Public Health Tracking Network). Period: 2008–2017. Tests: 433. Read the methodology →

These are voluntary and real-estate tests, not a random sample of homes, so they describe tested homes rather than every home.

About this page

Published by Ray Roman, editor of Radon by County. Figures are loaded from the cited source and spot-checked against it. Editorial policy · About us