Saint Joseph, MO Radon Levels

Q: What EPA Radon Zone is Saint Joseph in?

Saint Joseph is in Buchanan County, EPA Zone 1.

Q: How much does radon mitigation cost in Saint Joseph?

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

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

Saint Joseph, MO Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Buchanan County, MO

Zip Code 64501

Located in Buchanan County along the Missouri River valley, Saint Joseph spans multiple zip codes (64501, 64503-64507) with varied geological conditions including river terraces and loess deposits. The city's diverse housing stock ranges from historic Victorian homes to modern suburban developments. Testing data for these areas remains limited, making professional radon assessment particularly important given Missouri's variable radon potential.

6.25

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 6.25 pCi/L, based on 4 tests from 3 nearby cities. No readings have been submitted for Saint Joseph 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+

Saint Joseph, 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 Saint Joseph, MO

No homeowner tests have been submitted for Saint Joseph 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
Kearney	36.9 mi	5.00 pCi/L	1
Liberty	41.7 mi	6.50 pCi/L	2
Kansas City	47.5 mi	7.00 pCi/L	1

Buchanan County Radon Profile

The bedrock and soils beneath Buchanan County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. User-submitted readings are still sparse within Buchanan County itself, so the nearby measurements shown on this page provide the closest real-world picture of local radon conditions. 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 Buchanan County.

Radon FAQ for Saint Joseph, MO

What EPA Radon Zone is Saint Joseph in?

Saint Joseph and the 64501 zip code are in Buchanan County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

Why are radon readings shown from areas near Saint Joseph?

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

Radon mitigation in Saint Joseph 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 Saint Joseph?

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.