EPA Zone Data 2026
ME Radon Levels
View EPA radon zone classifications for every county in ME. Select your county to see detailed risk data, testing recommendations, and mitigation cost estimates.
12
Zone 1
High Risk
High Risk
4
Zone 2
Moderate
Moderate
0
Zone 3
Low Risk
Low Risk
Androscoggin
Zone 1
Aroostook
Zone 1
Cumberland
Zone 1
Franklin
Zone 1
Hancock
Zone 1
Kennebec
Zone 1
Knox
Zone 2
Lincoln
Zone 1
Oxford
Zone 1
Penobscot
Zone 1
Piscataquis
Zone 1
Sagadahoc
Zone 2
Somerset
Zone 1
Waldo
Zone 2
Washington
Zone 2
York
Zone 1
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