EPA Zone Data 2026
NJ Radon Levels
View EPA radon zone classifications for every county in NJ. Select your county to see detailed risk data, testing recommendations, and mitigation cost estimates.
7
Zone 1
High Risk
High Risk
11
Zone 2
Moderate
Moderate
3
Zone 3
Low Risk
Low Risk
Atlantic
Zone 3
Bergen
Zone 2
Burlington
Zone 2
Camden
Zone 2
Cape May
Zone 3
Cumberland
Zone 2
Essex
Zone 2
Gloucester
Zone 2
Hudson
Zone 2
Hunterdon
Zone 1
Mercer
Zone 1
Middlesex
Zone 2
Monmouth
Zone 1
Morris
Zone 1
Ocean
Zone 3
Passaic
Zone 2
Salem
Zone 2
Somerset
Zone 1
Sussex
Zone 1
Union
Zone 2
Warren
Zone 1
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