EPA radon zones
Oklahoma radon map: every county's zone
0 of Oklahoma's 77 counties are EPA radon zone 1 (predicted average above 4 pCi/L), 9 are zone 2 and 68 are zone 3. High readings occur in every zone, so EPA recommends testing every home.
Adair CountyZone 2
Alfalfa CountyZone 3
Atoka CountyZone 3
Beaver CountyZone 2
Beckham CountyZone 3
Blaine CountyZone 3
Bryan CountyZone 3
Caddo CountyZone 3
Canadian CountyZone 3
Carter CountyZone 3
Cherokee CountyZone 2
Choctaw CountyZone 3
Cimarron CountyZone 2
Cleveland CountyZone 3
Coal CountyZone 3
Comanche CountyZone 3
Cotton CountyZone 3
Craig CountyZone 3
Creek CountyZone 3
Custer CountyZone 3
Delaware CountyZone 2
Dewey CountyZone 3
Ellis CountyZone 2
Garfield CountyZone 3
Garvin CountyZone 3
Grady CountyZone 3
Grant CountyZone 3
Greer CountyZone 3
Harmon CountyZone 3
Harper CountyZone 3
Haskell CountyZone 3
Hughes CountyZone 3
Jackson CountyZone 3
Jefferson CountyZone 3
Johnston CountyZone 3
Kay CountyZone 3
Kingfisher CountyZone 3
Kiowa CountyZone 3
Latimer CountyZone 3
Le Flore CountyZone 3
Lincoln CountyZone 3
Logan CountyZone 3
Love CountyZone 3
Major CountyZone 3
Marshall CountyZone 3
Mayes CountyZone 2
McClain CountyZone 3
McCurtain CountyZone 3
McIntosh CountyZone 3
Murray CountyZone 3
Muskogee CountyZone 3
Noble CountyZone 3
Nowata CountyZone 3
Okfuskee CountyZone 3
Oklahoma CountyZone 3
Okmulgee CountyZone 3
Osage CountyZone 3
Ottawa CountyZone 3
Pawnee CountyZone 3
Payne CountyZone 3
Pittsburg CountyZone 3
Pontotoc CountyZone 3
Pottawatomie CountyZone 3
Pushmataha CountyZone 3
Roger Mills CountyZone 3
Rogers CountyZone 3
Seminole CountyZone 3
Sequoyah CountyZone 2
Stephens CountyZone 3
Texas CountyZone 2
Tillman CountyZone 3
Tulsa CountyZone 3
Wagoner CountyZone 3
Washington CountyZone 3
Washita CountyZone 3
Woods CountyZone 3
Woodward CountyZone 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.
Oklahoma cities: water and radon
Source: EPA Map of Radon Zones.