Radon zones in Arizona
| Apache County | Arizona | 2 |
| Cochise County | Arizona | 2 |
| Coconino County | Arizona | 2 |
| Gila County | Arizona | 2 |
| Graham County | Arizona | 2 |
| Greenlee County | Arizona | 2 |
| La Paz County | Arizona | 2 |
| Maricopa County | Arizona | 2 |
| Mohave County | Arizona | 2 |
| Navajo County | Arizona | 2 |
| Pima County | Arizona | 2 |
| Pinal County | Arizona | 2 |
| Santa Cruz County | Arizona | 2 |
| Yavapai County | Arizona | 2 |
| Yuma County | Arizona | 2 |
Sources
- Arizona: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
- EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
- Arizona: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
- EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
- Arizona: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
- EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
- Arizona: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
- EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
- Arizona: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
- EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
- Arizona: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
- EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
"Secondary" marks a source used only because the official page could not be read.