Skip to content
lung.com

Radon zones in Rhode Island

The EPA assigns every county in Rhode Island to one of three radon potential zones. 2 are in Zone 1, the highest category, home to about 27% of the state's residents.

5
Counties
2
Zone 1 counties
Predicted average above 4 pCi/L
2
Zone 2 counties
Predicted average 2-4 pCi/L
1
Zone 3 counties
Predicted average below 2 pCi/L

The map

Radon potential across Rhode Island

Every county in Rhode Island, filled by the zone the EPA assigns it. Zones follow geology rather than county lines, so the colour usually changes where the bedrock does, not where the border is.

Zone 1 · 2Zone 2 · 2Zone 3 · 1

Hover a county · click to open it

County by county

All 5 Rhode Island counties

Zone 1 · > 4 pCi/LZone 2 · 2 - 4 pCi/LZone 3 · < 2 pCi/L
CountyZonePopulationCOPDSmokingLung ca. deaths
Kent County1171k7.0%12.7%39.7
Washington County1130k6.3%9.5%31.6
Newport County284k6.3%9.2%24.7
Providence County2661k6.7%12.2%32.2
Bristol County350k5.9%10.1%23.6

Zones from the EPA Map of Radon Zones. COPD and smoking are CDC PLACES model-based estimates of adult prevalence. Lung cancer death rates are age-adjusted deaths per 100,000 per year, 2019-2023, from NCI State Cancer Profiles. A dash means the source does not report a value for that county.

Highest potential

Zone 1 counties in Rhode Island

These 2 counties have a predicted average indoor radon screening level above the EPA action level. The EPA recommends every home in them be tested.

Other states

Radon zones elsewhere