Bismarck, MO Radon Levels

Q: What EPA Radon Zone is Bismarck in?

Bismarck is in St Francois County, EPA Zone Unknown.

Q: How much does radon mitigation cost in Bismarck?

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

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

Bismarck, MO Radon Facts

EPA Radon Zone Unknown Unknown

County St Francois County, MO

Zip Code 63624

This St Francois County community in Missouri's Lead Belt region sits on Precambrian granite and volcanic rocks that can produce variable radon levels. With limited testing data available for Bismarck's 63624 area, residents should conduct home radon tests to understand their individual exposure risk.

7.00

pCi/L area average

Above EPA Action Level

St Francois County average: 7.00 pCi/L, based on 4 user-submitted tests across 2 cities in the county. No homeowner readings have been submitted for Bismarck 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+

Bismarck, 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 Bismarck, MO

No homeowner tests have been submitted for Bismarck 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
Farmington	10.4 mi	9.50 pCi/L	2
Bonne Terre	11.9 mi	4.50 pCi/L	2
De Soto	25.4 mi	11.00 pCi/L	1
Festus	31.4 mi	5.00 pCi/L	2
Bourbon	44.6 mi	6.00 pCi/L	1
Leasburg	44.6 mi	4.00 pCi/L	1
House Springs	45.6 mi	7.00 pCi/L	1
Imperial	46.0 mi	13.00 pCi/L	1

St Francois County Radon Profile

St Francois County has not been assigned a definitive EPA radon zone, so the agency recommends that every home be tested regardless of predicted risk. Homeowner-submitted tests from 2 cities in St Francois County average 7.00 pCi/L across 4 tests — 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 St Francois County.

Radon FAQ for Bismarck, MO

What EPA Radon Zone is Bismarck in?

Bismarck and the 63624 zip code are in St Francois County, which has an EPA assigned Radon Zone of Unknown. A zone of Unknown does not have sufficient data for classification.

Why are radon readings shown from areas near Bismarck?

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

Radon mitigation in Bismarck 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 Bismarck?

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.