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Evergreen, CO Radon Levels

Check local Evergreen radon levels and find certified testing and mitigation professionals to keep your home safe


Evergreen, CO Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Jefferson County, CO
Zip Code 80439
Avg. User Level 10.00 pCi/L
User Tests 1

High in Jefferson County's mountain foothills within the Denver Metro area, Evergreen has recorded an average radon level of 10.0 pCi/L, well above the EPA's 4.0 pCi/L action threshold. Colorado's granite bedrock and high altitude contribute to elevated radon potential throughout the Front Range region. Residents of zip code 80439 should prioritize professional radon mitigation, as mountain communities often experience some of the state's highest indoor radon concentrations.

10.00
pCi/L average
Above EPA Action Level

Based on 1 user-submitted radon test for homes in Evergreen, CO. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Evergreen, CO Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

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Evergreen, CO Radon Levels

User-submitted radon test readings from homes in the Evergreen area.

Radon LevelCityHome AgeFoundation
10 pCi/L Evergreen, CO 21-50 Years Full Basement

Have a radon test result for Evergreen? Submit your reading to help other homeowners.

Radon Readings Near Evergreen, CO

Compare radon levels in Evergreen with the closest nearby cities that have user-submitted test data.

CityDistanceAvg User LevelReadings
Conifer 8.2 mi 9.00 pCi/L 3
Morrison 9.0 mi 5.00 pCi/L 3
Golden 11.9 mi 9.00 pCi/L 2
Black Hawk 14.3 mi 13.00 pCi/L 4
Bailey 14.8 mi 14.33 pCi/L 3
Idaho Springs 15.5 mi 4.00 pCi/L 1
Littleton 17.8 mi 6.00 pCi/L 2
Arvada 17.9 mi 5.00 pCi/L 2

Jefferson County Radon Profile

Jefferson 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 6 cities in Jefferson County average 7.50 pCi/L across 12 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 Jefferson County to test, as levels can differ between neighboring homes.

Radon FAQ for Evergreen, CO

What is the average radon level in Evergreen, CO?
Based on 1 user-submitted test, the average radon level in Evergreen is 10.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.
What EPA Radon Zone is Evergreen in?
Evergreen and the 80439 zip code are in Jefferson County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.
How much does radon mitigation cost in Evergreen?
Radon mitigation in Evergreen typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.
Should I test for radon if I'm buying a home in Evergreen?
Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.