EPA radon zones
Alaska radon map: every county's zone
0 of Alaska's 27 counties are EPA radon zone 1 (predicted average above 4 pCi/L), 5 are zone 2 and 22 are zone 3. High readings occur in every zone, so EPA recommends testing every home.
Aleutians East BoroughZone 3
Aleutians West Census AreaZone 3
Anchorage MunicipalityZone 3
Bethel Census AreaZone 3
Bristol Bay BoroughZone 3
Denali BoroughZone 3
Dillingham Census AreaZone 3
Fairbanks North Star BoroughZone 2
Haines BoroughZone 3
Juneau City and BoroughZone 3
Kenai Peninsula BoroughZone 2
Ketchikan Gateway BoroughZone 2
Kodiak Island BoroughZone 3
Lake and Peninsula BoroughZone 3
Matanuska-Susitna BoroughZone 2
Nome Census AreaZone 3
North Slope BoroughZone 3
Northwest Arctic BoroughZone 3
Prince of Wales-Outer Ketchikan Census AreaZone 3
Sitka City and BoroughZone 3
Skagway MunicipalityZone 3
Southeast Fairbanks Census AreaZone 2
Valdez-Cordova Census AreaZone 3
Wade Hampton Census AreaZone 3
Wrangell-Petersburg Census AreaZone 3
Yakutat City and BoroughZone 3
Yukon-Koyukuk Census AreaZone 3
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.
Alaska cities: water and radon
Source: EPA Map of Radon Zones.