Single Family Facilities
Mandatory Radon Testing Requirements for State Licensed or Regulated Facilities in Single Family Home and Duplex Buildings
Do You Test?
The 1999 legislature amended the mandatory radon testing requirement to require it only in the select counties show in the map below. For more guidance on the mandatory radon testing requirements contact the radon and indoor air program at 800-543-8279. Radon testing is required in the yellow shaded counties, while those counties shaded green are exempt. - ADA Text Equivalent (<1 KB TXT) of Map (53KB GIF).