50%tests ≥ 4 pCi/L
44tests on record
4.1median pCi/L
Zone 1EPA zone (1993 prediction)

Test results in Harrison County

ResultShareEPA guidance
Below 2 pCi/L18%Below EPA's levels
2 to 4 pCi/L32%Consider fixing
4 pCi/L or more50%EPA recommends fixing

What the data shows

Where Harrison County sits among Ohio's 88 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%20%40%60%80%

How Harrison County compares

Harrison County ranks 3 of 6 among its neighboursShare of tests at or above 4 pCi/L · Radon test results from laboratories, 2008–2017 · whisker: 95% range
Tuscarawas County66%Carroll County57%Harrison County50%Jefferson County50%Belmont County45%Guernsey County44%Ohio 52%
Data table
AreaTests ≥ 4 pCi/LTests
Tuscarawas County66%547
Carroll County57%486
Harrison County50%44
Jefferson County50%271
Belmont County45%697
Guernsey County44%117
Ohio (88 counties)52%98,840

Same source as Harrison County.

What it means for your home

More than half of all results in Harrison 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: 44. 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