Antonito, CO Radon Levels

Q: What EPA Radon Zone is Antonito in?

Antonito is in Conejos County, EPA Zone 2.

Q: How much does radon mitigation cost in Antonito?

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

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

Antonito, CO Radon Facts

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

County Conejos County, CO

Zip Code 81120

Located in the San Luis Valley within Conejos County, Antonito sits at high elevation where volcanic and sedimentary geology creates a complex underground environment. This historic railroad town in zip code 81120 features a mix of older adobe and frame construction typical of southern Colorado communities. Given the absence of current testing data and the area's unique geological setting, homeowners should consider professional radon testing to establish baseline levels.

Antonito, CO Radon Mitigation

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

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EPA Radon Zones Near Antonito, CO

No user-submitted radon readings are available for Antonito or its immediate area yet. The table below shows the EPA radon zone — a county-level prediction of radon risk — for nearby communities. Radon still varies from home to home, so testing is the only way to confirm your level.

City	Distance	County	EPA Radon Zone
Chama	44.5 mi	Conejos County	Unknown
Center	44.9 mi	Saguache County	Zone 2
Hooper	45.0 mi	Alamosa County	Zone 2
South Fork	51.4 mi	Rio Grande County	Zone 2
Fort Garland	55.8 mi	Costilla County	Unknown
Pagosa Springs	56.3 mi	Archuleta County	Zone 2
La Veta	61.4 mi	Huerfano County	Zone 1
Moffat	67.2 mi	Saguache County	Zone 2

Conejos County Radon Profile

EPA mapping assigns Conejos County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Direct test data for Conejos County remains limited, so the closest neighboring readings are used here to represent the radon conditions homeowners are likely to encounter. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Conejos County home regardless of zone or a neighbor's results.

Radon FAQ for Antonito, CO

What EPA Radon Zone is Antonito in?

Antonito and the 81120 zip code are in Conejos 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.

What EPA radon zones surround Antonito, CO?

Antonito sits in Conejos County, which the EPA classifies as Radon Zone 2. Among the nearby communities listed above, 1 in Zone 1 (high risk, predicted above 4 pCi/L), 5 in Zone 2 (moderate risk, 2-4 pCi/L). EPA radon zones are county-level predictions of radon potential, so the EPA recommends testing every individual home regardless of its zone, since levels vary from house to house.

How much does radon mitigation cost in Antonito?

Radon mitigation in Antonito 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 Antonito?

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.