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State overview
Radon in Utah
Of Utah's 29 counties and county equivalents, EPA places 7 in Zone 1, 22 in Zone 2. Zones are county-wide predictions; testing is the only way to know your home's level.
Radon in the news
Utah stories
- American Lung Association encourages Utah residents to test their homes for radonKSL · 2026-04-07
- Utah homes under 4 years old are sinking, cracking and leaking radon; how to avoid this real estate nightmareYahoo Finance · 2026-03-22
- Utah students take radon awareness to Capitol HillKSL News · 2026-03-10
- Nearly half of Utah homes have dangerous radon levelsKSL News · 2026-01-27
- Could your house have radon? 1 in 3 Utah homes do, what this means for nonsmoking lung cancer riskABC4 Utah · 2026-01-27
Headlines link to the original publishers via Google News. Updated 2026-10-27.
All 29 counties
| County | EPA zone |
|---|---|
| Beaver County | Zone 2 |
| Box Elder County | Zone 2 |
| Cache County | Zone 2 |
| Carbon County | Zone 1 |
| Daggett County | Zone 2 |
| Davis County | Zone 2 |
| Duchesne County | Zone 1 |
| Emery County | Zone 2 |
| Garfield County | Zone 2 |
| Grand County | Zone 1 |
| Iron County | Zone 2 |
| Juab County | Zone 2 |
| Kane County | Zone 2 |
| Millard County | Zone 2 |
| Morgan County | Zone 2 |
| Piute County | Zone 1 |
| Rich County | Zone 2 |
| Salt Lake County | Zone 2 |
| San Juan County | Zone 2 |
| Sanpete County | Zone 1 |
| Sevier County | Zone 1 |
| Summit County | Zone 2 |
| Tooele County | Zone 2 |
| Uintah County | Zone 1 |
| Utah County | Zone 2 |
| Wasatch County | Zone 2 |
| Washington County | Zone 2 |
| Wayne County | Zone 2 |
| Weber County | Zone 2 |
Source: EPA radon zones spreadsheet (EPA 402/A-16/001).