Hardenville, MO Radon Levels

Q: What EPA Radon Zone is Hardenville in?

Hardenville is in Ozark County, EPA Zone 2.

Q: How much does radon mitigation cost in Hardenville?

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

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

Hardenville, MO Radon Facts

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

County Ozark County, MO

Zip Code 65666

Located in Ozark County in Missouri's rugged Ozark Mountains, Hardenville sits in EPA Zone 2 with moderate radon potential. The region's limestone and dolomite bedrock can create variable radon conditions, particularly in homes built near karst features or cave systems. Since testing data for zip code 65666 is limited, homeowners should conduct professional radon assessments to understand their individual risk.

4.00

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 4.00 pCi/L, based on 2 tests from 2 nearby cities. No readings have been submitted for Hardenville 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+

Hardenville, 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 Hardenville, MO

No homeowner tests have been submitted for Hardenville 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
West Plains	29.3 mi	4.00 pCi/L	1
Branson	48.9 mi	4.00 pCi/L	1

Ozark County Radon Profile

EPA mapping assigns Ozark 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 Ozark 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 Ozark County home regardless of zone or a neighbor's results.

Radon FAQ for Hardenville, MO

What EPA Radon Zone is Hardenville in?

Hardenville and the 65666 zip code are in Ozark 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 Hardenville?

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

Radon mitigation in Hardenville 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 Hardenville?

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.