10%tests ≥ 4 pCi/L
451tests on record
1.0median pCi/L
Zone 3EPA zone (1993 prediction)

Test results in Sussex County

ResultShareEPA guidance
Below 2 pCi/L72%Below EPA's levels
2 to 4 pCi/L18%Consider fixing
4 pCi/L or more10%EPA recommends fixing

What the data shows

How Sussex County compares

Sussex 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
Kent County17%Dorchester County, Maryla…17%Sussex County10%Caroline County, Maryland0%Wicomico County, Maryland0%Worcester County, Maryland0%Delaware 17%
Data table

Same source as Sussex County. Other bordering counties: Cape May County, New Jersey.

What it means for your home

About 1 in 10 results in Sussex 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: 451. 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