Laddonia, MO Radon Levels

Q: What EPA Radon Zone is Laddonia in?

Laddonia is in Audrain County, EPA Zone 2.

Q: How much does radon mitigation cost in Laddonia?

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

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

Laddonia, MO Radon Facts

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

County Audrain County, MO

Zip Code 63352

This Audrain County community sits in central Missouri where limestone formations can contribute to moderate radon potential across the region. While specific testing data isn't available for Laddonia, the area's geological characteristics suggest homeowners should prioritize radon assessment. Local housing includes both historic farmhouses and newer construction, each requiring different approaches to radon testing and mitigation.

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 Laddonia 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+

Laddonia, 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 Laddonia, MO

No homeowner tests have been submitted for Laddonia 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	14.0 mi	4.00 pCi/L	1
Hallsville	32.4 mi	5.00 pCi/L	2
Hannibal	35.0 mi	6.00 pCi/L	2
Palmyra	38.4 mi	8.00 pCi/L	1
Columbia	39.4 mi	3.00 pCi/L	2
Troy	40.2 mi	8.50 pCi/L	4
Holts Summit	49.1 mi	4.00 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 Laddonia, MO

What EPA Radon Zone is Laddonia in?

Laddonia and the 63352 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 Laddonia?

No homeowner radon tests have been submitted for Laddonia 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 Laddonia 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 Laddonia?

Radon mitigation in Laddonia 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 Laddonia?

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.