Centralia, MO Radon Levels

Q: What EPA Radon Zone is Centralia in?

Centralia is in Boone County, EPA Zone 2.

Q: How much does radon mitigation cost in Centralia?

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

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

Centralia, MO Radon Facts

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

County Boone County, MO

Zip Code 65240

Located in Boone County within both the Columbia and Jefferson City Metro areas, Centralia sits in EPA Zone 2 where moderate radon levels are expected. The region's Missouri River valley geology, with limestone bedrock beneath glacial deposits, can facilitate radon gas migration. With no current testing data for zip code 65240, homeowners should pursue radon testing to establish their property's specific radon profile.

4.00

pCi/L area average

Above EPA Action Level

Boone County average: 4.00 pCi/L, based on 4 user-submitted tests across 2 cities in the county. No homeowner readings have been submitted for Centralia 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+

Centralia, MO Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Need Radon Mitigation or Testing in Centralia?

100% Free, No-Obligation Quotes
Matches You with State-Licensed Boone County Pros

1-800-299-3578 816-463-2802 (local) Toll-free · Mon–Fri 8am–6pm ET

Radon Readings Near Centralia, MO

No homeowner tests have been submitted for Centralia 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
Hallsville	7.5 mi	5.00 pCi/L	2
Mexico	13.9 mi	4.00 pCi/L	1
Columbia	18.7 mi	3.00 pCi/L	2
Boonville	36.2 mi	4.00 pCi/L	1
Holts Summit	39.0 mi	4.00 pCi/L	1
Jefferson City	43.9 mi	6.00 pCi/L	1

Boone County Radon Profile

The soils and bedrock of Boone County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Homeowner-submitted tests from 2 cities in Boone County average 4.00 pCi/L across 4 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Boone County to test, as levels can differ between neighboring homes.

Radon FAQ for Centralia, MO

What EPA Radon Zone is Centralia in?

Centralia and the 65240 zip code are in Boone 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 Centralia?

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

Radon mitigation in Centralia 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 Centralia?

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.