Cotopaxi, CO Radon Levels

Q: What EPA Radon Zone is Cotopaxi in?

Cotopaxi is in Fremont County, EPA Zone 1.

Q: How much does radon mitigation cost in Cotopaxi?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

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

Cotopaxi, CO Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Fremont County, CO

Zip Code 81223

Located in Colorado's Fremont County along the Arkansas River valley, Cotopaxi sits at elevation where granite and metamorphic bedrock can contribute to radon gas production. Limited testing data for the 81223 zip code area emphasizes the importance of professional radon testing for mountain community residents. The area's high-altitude location and diverse geological conditions typical of the Colorado Rockies require individual property assessment.

11.43

pCi/L area average

Above EPA Action Level

Fremont County average: 11.43 pCi/L, based on 7 user-submitted tests across 3 cities in the county. No homeowner readings have been submitted for Cotopaxi itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Cotopaxi, CO Radon Mitigation

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

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Radon Readings Near Cotopaxi, CO

No homeowner tests have been submitted for Cotopaxi yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Salida	19.9 mi	15.50 pCi/L	4
Westcliffe	22.0 mi	6.00 pCi/L	2
Canon City	26.0 mi	10.50 pCi/L	6
Gunnison	36.9 mi	7.38 pCi/L	8
Penrose	36.9 mi	17.00 pCi/L	1
Fort Garland	38.1 mi	14.00 pCi/L	1
Florissant	39.1 mi	13.00 pCi/L	2
Buena Vista	40.7 mi	12.57 pCi/L	7

Fremont County Radon Profile

Fremont 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 Fremont County average 11.43 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 Fremont County to test, as levels can differ between neighboring homes.

Radon FAQ for Cotopaxi, CO

What EPA Radon Zone is Cotopaxi in?

Cotopaxi and the 81223 zip code are in Fremont 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.

Why are radon readings shown from areas near Cotopaxi?

No homeowner radon tests have been submitted for Cotopaxi yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Fremont County average—are the best available indicator of local conditions until Cotopaxi homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

How much does radon mitigation cost in Cotopaxi?

Radon mitigation in Cotopaxi 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 Cotopaxi?

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.