Boulder, CO Radon Levels
Check local Boulder radon levels and find certified testing and mitigation professionals to keep your home safe
Boulder, CO Radon Facts
This area of Boulder in Boulder County has recorded an average radon level of 12.0 pCi/L, significantly exceeding the EPA action threshold and reflecting Colorado's status as one of the highest radon states in the nation. Located at zip code 80301 within the Boulder Metro, the community sits on alluvial deposits near the Rocky Mountain foothills where uranium-bearing granite and metamorphic rocks contribute to elevated radon production. Given these extreme readings, professional mitigation is typically necessary for most homes in this geological setting.
Based on 1 user-submitted radon test for homes in Boulder, CO. The EPA recommends taking action at or above 4.0 pCi/L.
Boulder, CO Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
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Boulder, CO Radon Levels
User-submitted radon test readings from homes in the Boulder area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 12 pCi/L | Boulder, CO | 21-50 Years | Full Basement |
Have a radon test result for Boulder? Submit your reading to help other homeowners.
Radon Readings Near Boulder, CO
Compare radon levels in Boulder with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Lafayette | 8.4 mi | 8.00 pCi/L | 2 |
| Erie | 10.3 mi | 20.00 pCi/L | 1 |
| Broomfield | 11.9 mi | 5.00 pCi/L | 1 |
| Longmont | 13.6 mi | 8.00 pCi/L | 4 |
| Arvada | 14.9 mi | 5.00 pCi/L | 2 |
| Lyons | 15.7 mi | 14.50 pCi/L | 2 |
| Black Hawk | 18.1 mi | 13.00 pCi/L | 4 |
| Berthoud | 21.1 mi | 12.00 pCi/L | 2 |
Boulder County Radon Profile
Boulder County falls in EPA Radon Zone 1, meaning the local uranium-bearing geology is predicted to drive average indoor radon screening levels above the EPA's 4 pCi/L action threshold. Homeowner-submitted tests from 4 cities in Boulder County average 10.17 pCi/L across 6 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Boulder County to test, as levels can differ between neighboring homes.