Franklin, MO Radon Levels

Q: What EPA Radon Zone is Franklin in?

Franklin is in Howard County, EPA Zone 2.

Q: How much does radon mitigation cost in Franklin?

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

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

Franklin, MO Radon Facts

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

County Howard County, MO

Zip Code 65250

Franklin in Howard County is part of the Columbia Metro area in central Missouri's rolling hills region. While specific radon testing data for zip code 65250 is limited, the community sits in EPA Zone 2, indicating moderate radon potential. Homeowners in this area should test their properties, as Missouri's varied geology can produce unexpected radon levels even in areas with moderate overall risk.

4.70

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 4.70 pCi/L, based on 10 tests from 8 nearby cities. No readings have been submitted for Franklin 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+

Franklin, 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 Franklin, MO

No homeowner tests have been submitted for Franklin 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
Boonville	9.1 mi	4.00 pCi/L	1
Columbia	31.3 mi	3.00 pCi/L	2
Hallsville	32.7 mi	5.00 pCi/L	2
Sedalia	33.5 mi	6.00 pCi/L	1
Carrollton	41.0 mi	6.00 pCi/L	1
Cole Camp	46.6 mi	5.00 pCi/L	1
Jefferson City	48.8 mi	6.00 pCi/L	1
Holts Summit	48.8 mi	4.00 pCi/L	1

Howard County Radon Profile

The soils and bedrock of Howard County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Few homeowner tests have been logged inside Howard County so far, which is why this page draws on the nearest recorded readings to illustrate regional radon levels. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Howard County to test, as levels can differ between neighboring homes.

Radon FAQ for Franklin, MO

What EPA Radon Zone is Franklin in?

Franklin and the 65250 zip code are in Howard 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 Franklin?

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

Radon mitigation in Franklin 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 Franklin?

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.