Alamosa, CO Radon Levels

Q: What EPA Radon Zone is Alamosa in?

Alamosa is in Alamosa County, EPA Zone 2.

Q: How much does radon mitigation cost in Alamosa?

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

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

Alamosa, CO Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Alamosa County, CO

Zip Code 81101

Set in the San Luis Valley in south-central Colorado, Alamosa County's high-altitude desert environment typically produces moderate radon levels due to the area's volcanic geology and well-drained soils. With testing data currently limited for the 81101 zip code, homeowners should establish baseline readings given Colorado's variable radon landscape.

9.50

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 9.50 pCi/L, based on 2 tests from 2 nearby cities. No readings have been submitted for Alamosa yet, so the closest recorded data is shown as a benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Alamosa, 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 Alamosa, CO

No homeowner tests have been submitted for Alamosa 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
Fort Garland	28.2 mi	14.00 pCi/L	1
La Veta	45.1 mi	5.00 pCi/L	1

Alamosa County Radon Profile

The soils and bedrock of Alamosa County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Few homeowner tests have been logged inside Alamosa County so far, which is why this page draws on the nearest recorded readings to illustrate regional radon levels. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Alamosa County to test, as levels can differ between neighboring homes.

Radon FAQ for Alamosa, CO

What EPA Radon Zone is Alamosa in?

Alamosa and the 81101 zip code are in Alamosa County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

Why are radon readings shown from areas near Alamosa?

No homeowner radon tests have been submitted for Alamosa yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Alamosa County average—are the best available indicator of local conditions until Alamosa 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 Alamosa?

Radon mitigation in Alamosa 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 Alamosa?

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.