EPA radon zones
Utah radon map: every county's zone
7 of Utah's 29 counties are EPA radon zone 1 (predicted average above 4 pCi/L), 22 are zone 2 and 0 are zone 3. High readings occur in every zone, so EPA recommends testing every home.
Beaver CountyZone 2
Box Elder CountyZone 2
Cache CountyZone 2
Carbon CountyZone 1
Daggett CountyZone 2
Davis CountyZone 2
Duchesne CountyZone 1
Emery CountyZone 2
Garfield CountyZone 2
Grand CountyZone 1
Iron CountyZone 2
Juab CountyZone 2
Kane CountyZone 2
Millard CountyZone 2
Morgan CountyZone 2
Piute CountyZone 1
Rich CountyZone 2
Salt Lake CountyZone 2
San Juan CountyZone 2
Sanpete CountyZone 1
Sevier CountyZone 1
Summit CountyZone 2
Tooele CountyZone 2
Uintah CountyZone 1
Utah CountyZone 2
Wasatch CountyZone 2
Washington CountyZone 2
Wayne CountyZone 2
Weber CountyZone 2
How much does radon mitigation cost?
Most single-family systems cost $800 to $2,500 installed, depending on foundation type and how many suction points are needed. A follow-up test confirms the system works.
What do the zones mean?
EPA radon zones describe counties, not houses. Zone 1 counties have a predicted average indoor level above 4 picocuries per liter (pCi/L), Zone 2 between 2 and 4, Zone 3 below 2. Homes with high levels are found in every zone, which is why EPA recommends that every home be tested, and fixed at 4 pCi/L or above.
Utah cities: water and radon
Source: EPA Map of Radon Zones.