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Sedalia, CO Radon Levels

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


Sedalia, CO Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Douglas County, CO
Zip Code 80135
Avg. User Level 20.00 pCi/L
User Tests 1

Located in Douglas County within the Denver Metro area, Sedalia sits on Front Range geology that contributes to Colorado's elevated radon levels. The community's average radon reading of 20.0 pCi/L significantly exceeds the EPA action level of 4.0 pCi/L. Residents in zip code 80135 should prioritize professional radon testing and mitigation given these elevated conditions.

20.00
pCi/L average
Above EPA Action Level

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

0
4.0 EPA
10+

Sedalia, CO Radon Mitigation

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

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Sedalia, CO Radon Levels

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

Radon LevelCityHome AgeFoundation
20 pCi/L Sedalia, CO 0-20 Years Partial Basement

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

Radon Readings Near Sedalia, CO

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

CityDistanceAvg User LevelReadings
Littleton 18.1 mi 6.00 pCi/L 2
Monument 18.5 mi 6.33 pCi/L 3
Conifer 19.6 mi 9.00 pCi/L 3
Parker 20.0 mi 5.40 pCi/L 5
Morrison 21.6 mi 5.00 pCi/L 3
Woodland Park 21.7 mi 7.00 pCi/L 1
Englewood 22.4 mi 11.00 pCi/L 2
Bailey 23.4 mi 14.33 pCi/L 3

Douglas County Radon Profile

Douglas 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 3 cities in Douglas County average 7.57 pCi/L across 7 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 Douglas County to test, as levels can differ between neighboring homes.

Radon FAQ for Sedalia, CO

What is the average radon level in Sedalia, CO?
Based on 1 user-submitted test, the average radon level in Sedalia is 20.00 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 Sedalia in?
Sedalia and the 80135 zip code are in Douglas 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 Sedalia?
Radon mitigation in Sedalia 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 Sedalia?
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.