Hawaii Radon Levels

5 counties EPA Region 9
0Zone 1 (High)
0Zone 2 (Moderate)
5Zone 3 (Low)

All counties in Hawaii are classified as Zone 3 (lowest radon potential). However, the EPA recommends testing all homes, as elevated radon has been found in homes in every state.

CountyEPA ZoneRisk Level
Hawaii County Zone 3 Lowest Potential
Honolulu County Zone 3 Lowest Potential
Kalawao County Zone 3 Lowest Potential
Kauai County Zone 3 Lowest Potential
Maui County Zone 3 Lowest Potential

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