Littleton, CO Radon Levels
Check local Littleton radon levels and find certified testing and mitigation professionals to keep your home safe
Littleton, CO Radon Facts
Spanning multiple counties in the Denver Metro, Littleton records an average radon level of 6.0 pCi/L, exceeding the EPA's 4.0 pCi/L action level. The community sits on Pierre Shale and other geological formations known for uranium content that produces radon gas. Homes across Littleton's various ZIP codes typically feature full basements where radon can accumulate, making testing and potential mitigation crucial for resident safety.
Based on 2 user-submitted radon tests for homes in Littleton, CO. The EPA recommends taking action at or above 4.0 pCi/L.
Littleton, CO Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Need Radon Mitigation or Testing in Littleton?
- 100% Free, No-Obligation Quotes
- Matches You with State-Licensed Arapahoe County Pros
Littleton, CO Radon Levels
User-submitted radon test readings from homes in the Littleton area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 6 pCi/L | Littleton, CO | 21-50 Years | Partial Basement |
Have a radon test result for Littleton? Submit your reading to help other homeowners.
Radon Readings Near Littleton, CO
Compare radon levels in Littleton with the closest nearby cities that have user-submitted test data.
Arapahoe County Radon Profile
The bedrock and soils beneath Arapahoe County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. Homeowner-submitted tests from 4 cities in Arapahoe County average 8.40 pCi/L across 10 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Arapahoe County.