EPA Zone Data 2026
Oklahoma Radon Map, Levels & Testing Guide
View EPA radon zone classifications for every county in Oklahoma. Open your county to compare basement test meaning, EPA action thresholds, and when mitigation pricing becomes worth checking.
0
Zone 1
High Risk
High Risk
9
Zone 2
Moderate
Moderate
68
Zone 3
Low Risk
Low Risk
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If you already have a radon result, skip the directory and move straight to local price guidance.
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Browse Counties
Jump to the Directory
Open your county to see its EPA zone, testing meaning, and the point where mitigation becomes worth pricing.
Adair County
Zone 2
Beaver County
Zone 2
Cherokee County
Zone 2
Cimarron County
Zone 2
Delaware County
Zone 2
Ellis County
Zone 2
Mayes County
Zone 2
Sequoyah County
Zone 2
Texas County
Zone 2
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