EPA Zone Data 2026
New Jersey Radon Map, Levels & Testing Guide
View EPA radon zone classifications for every county in New Jersey. Open your county to compare basement test meaning, EPA action thresholds, and when mitigation pricing becomes worth checking.
7
Zone 1
High Risk
High Risk
11
Zone 2
Moderate
Moderate
3
Zone 3
Low Risk
Low Risk
Already Tested
View New Jersey Cost Estimates
If you already have a radon result, skip the directory and move straight to local price guidance.
Need a Number First
Read the Testing Guide
Use the fastest valid radon test setup before you compare quotes or ask whether mitigation is worth it.
Browse Counties
Jump to the Directory
Open your county to see its EPA zone, testing meaning, and the point where mitigation becomes worth pricing.
Bergen County
Zone 2
Burlington County
Zone 2
Camden County
Zone 2
Cumberland County
Zone 2
Essex County
Zone 2
Gloucester County
Zone 2
Hudson County
Zone 2
Hunterdon County
Zone 1
Mercer County
Zone 1
Middlesex County
Zone 2
Monmouth County
Zone 1
Morris County
Zone 1
Passaic County
Zone 2
Salem County
Zone 2
Somerset County
Zone 1
Sussex County
Zone 1
Union County
Zone 2
Warren County
Zone 1
Already tested? Get your itemized mitigation cost estimate.
View New Jersey Mitigation Cost Estimates ->