Radon Levels in Rhode Island

5 counties — 2 high risk, 2 moderate, 1 low risk

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Zone 1 High (40.0%) Zone 2 Moderate (40.0%) Zone 3 Low (20.0%)

Rhode Island Radon Zone Map

Counties colored by EPA radon zone. Red = Zone 1, Orange = Zone 2, Green = Zone 3.

Highest-Risk Counties

Kent38.9% above action level
Washington45.8% above action level

Check Your Rhode Island ZIP Code

All 5 Counties — By Radon Risk

CountyEPA ZoneTests% Above 4 pCi/L
Kent High 36 38.9%
Washington High 24 45.8%
Newport Moderate 17 41.2%
Providence Moderate 97 37.1%
Bristol Low 9 44.4%

Sources: EPA Map of Radon Zones, CDC Environmental Health Tracking Network

Frequently Asked Questions

How many counties in Rhode Island have high radon risk?

Rhode Island has 2 counties classified as EPA Zone 1 (high radon risk), 2 as Zone 2 (moderate), and 1 as Zone 3 (low risk).

Is radon a problem in Rhode Island?

Rhode Island has 2 high-risk counties where elevated radon is likely. The EPA recommends all homes in Rhode Island be tested for radon, regardless of which zone they're in.

How do I check radon levels for my Rhode Island address?

Enter your ZIP code in the search box above to see your county's EPA radon zone and available testing data. For your specific home's radon level, you'll need a radon test kit.