Martinsburg, MO Radon Levels

Q: What EPA Radon Zone is Martinsburg in?

Martinsburg is in Audrain County, EPA Zone 2.

Q: How much does radon mitigation cost in Martinsburg?

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

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

Martinsburg, MO Radon Facts

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

County Audrain County, MO

Zip Code 65264

Situated in Audrain County within the Jefferson City Metro area, Martinsburg lies on central Missouri's prairie geology with limestone bedrock that can contribute to radon accumulation. Testing data for zip code 65264 remains limited, though Missouri's EPA Zone 2 classification suggests moderate radon potential across the region. Homeowners should conduct baseline radon testing, as the area's geological conditions and typical housing stock of homes with full basements can facilitate radon entry and concentration.

4.00

pCi/L area average

Above EPA Action Level

Audrain County average: 4.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Martinsburg 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+

Martinsburg, MO 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 Martinsburg, MO

No homeowner tests have been submitted for Martinsburg 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
Mexico	13.1 mi	4.00 pCi/L	1
Hallsville	30.0 mi	5.00 pCi/L	2
Columbia	34.2 mi	3.00 pCi/L	2
Troy	38.3 mi	8.50 pCi/L	4
Holts Summit	40.2 mi	4.00 pCi/L	1
New Haven	43.1 mi	5.00 pCi/L	1
Hannibal	44.7 mi	6.00 pCi/L	2
Jefferson City	46.8 mi	6.00 pCi/L	1

Audrain County Radon Profile

Audrain County is mapped as EPA Radon Zone 2, where the local geology is predicted to produce moderate indoor screening levels between 2 and 4 pCi/L. Homeowner-submitted tests from 1 city in Audrain County average 4.00 pCi/L across 1 test — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Audrain County.

Radon FAQ for Martinsburg, MO

What EPA Radon Zone is Martinsburg in?

Martinsburg and the 65264 zip code are in Audrain 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 Martinsburg?

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

Radon mitigation in Martinsburg 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 Martinsburg?

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.