Delaware Radon Levels

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

No counties in Delaware are classified as Zone 1 (highest risk), but 1 counties are Zone 2 (moderate potential). The EPA recommends testing all homes regardless of zone classification, as elevated radon can occur in any zone.

CountyEPA ZoneRisk Level
Kent County Zone 3 Lowest Potential
New Castle County Zone 2 Moderate Potential
Sussex County Zone 3 Lowest Potential

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