Mosca, CO Radon Mitigation and Testing

Q: What EPA Radon Zone is Mosca in?

Mosca is in Alamosa County, EPA Zone 2.

Q: How much does radon mitigation cost in Mosca?

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

Alamosa County

EPA Zone 2

Positioned in Alamosa County within Colorado's San Luis Valley, Mosca sits on high-altitude desert soils over volcanic and sedimentary formations. Testing data for the 81146 zip code remains limited, making individual property testing important given Colorado's variable radon geology. The rural community's housing reflects high-altitude construction practices, with both traditional ranch homes and manufactured housing adapted to the region's extreme temperature variations.

Mosca, CO Radon Mitigation

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

Mosca, CO Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Mosca Radon Facts

Key details about the radon risk profile for Mosca and the 81146 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Alamosa County, CO

Zip Code

81146

Predicted Screening Level

2–4 pCi/L (Zone 2)

Mosca and the 81146 zip code are located in Alamosa County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Mosca, CO

What EPA Radon Zone is Mosca in?

Mosca and the 81146 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.

How much does radon mitigation cost in Mosca?

Radon mitigation in Mosca 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 Mosca?

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.

Most Active Radon Markets in Colorado

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Fairplay	12.00 pCi/L	9
Crested Butte	8.56 pCi/L	9
Denver	6.22 pCi/L	9
Montrose	9.25 pCi/L	8
Gunnison	7.38 pCi/L	8
Buena Vista	12.57 pCi/L	7
Pueblo	10.67 pCi/L	6
Grand Junction	8.17 pCi/L	6
Bayfield	6.00 pCi/L	6
Canon City	10.80 pCi/L	5
Aurora	7.40 pCi/L	5
Windsor	7.00 pCi/L	5
Telluride	6.80 pCi/L	5
Parker	5.40 pCi/L	5
Salida	15.50 pCi/L	4
Johnstown	9.50 pCi/L	4
Granby	9.00 pCi/L	4
Longmont	8.00 pCi/L	4
Edwards	6.75 pCi/L	4
Mancos	6.00 pCi/L	4