Radon zones in Utah
| Beaver County | Utah | 2 |
| Box Elder County | Utah | 2 |
| Cache County | Utah | 2 |
| Carbon County | Utah | 1 |
| Davis County | Utah | 2 |
| Duchesne County | Utah | 1 |
| Emery County | Utah | 2 |
| Garfield County | Utah | 2 |
| Grand County | Utah | 1 |
| Iron County | Utah | 2 |
| Juab County | Utah | 2 |
| Kane County | Utah | 2 |
| Millard County | Utah | 2 |
| Morgan County | Utah | 2 |
| Piute County | Utah | 1 |
| Rich County | Utah | 2 |
| Salt Lake County | Utah | 2 |
| San Juan County | Utah | 2 |
| Sanpete County | Utah | 1 |
| Sevier County | Utah | 1 |
| Summit County | Utah | 2 |
| Tooele County | Utah | 2 |
| Uintah County | Utah | 1 |
| Washington County | Utah | 2 |
| Wayne County | Utah | 2 |
| Weber County | Utah | 2 |
Sources
- Utah: 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
- Utah: 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
- Utah: 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
- Utah: 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
- Utah: 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
- Utah: 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.