EPA radon zones
Wyoming radon map: every county's zone
21 of Wyoming's 23 counties are EPA radon zone 1 (predicted average above 4 pCi/L), 2 are zone 2 and 0 are zone 3. High readings occur in every zone, so EPA recommends testing every home.
Albany CountyZone 1
Big Horn CountyZone 1
Campbell CountyZone 1
Carbon CountyZone 1
Converse CountyZone 1
Crook CountyZone 1
Fremont CountyZone 1
Goshen CountyZone 1
Hot Springs CountyZone 1
Johnson CountyZone 1
Laramie CountyZone 1
Lincoln CountyZone 1
Natrona CountyZone 1
Niobrara CountyZone 1
Park CountyZone 1
Platte CountyZone 2
Sheridan CountyZone 1
Sublette CountyZone 1
Sweetwater CountyZone 1
Teton CountyZone 1
Uinta CountyZone 1
Washakie CountyZone 1
Weston 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.
Source: EPA Map of Radon Zones.