Herculaneum, MO Radon Mitigation and Testing

Q: What EPA Radon Zone is Herculaneum in?

Herculaneum is in Jefferson County, EPA Zone 2.

Q: How much does radon mitigation cost in Herculaneum?

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

Jefferson County

EPA Zone 2

Situated in Jefferson County along the Mississippi River south of St. Louis, Herculaneum rests on limestone bluffs that can produce elevated radon levels in some areas. Testing data for zip code 63048 remains limited, highlighting the importance of individual home testing. Properties in this historic St. Louis Metro community range from older homes with stone foundations to newer construction, each requiring radon evaluation.

Herculaneum, MO Radon Mitigation

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

Herculaneum, MO Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Herculaneum Radon Facts

Key details about the radon risk profile for Herculaneum and the 63048 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Jefferson County, MO

Zip Code

63048

Predicted Screening Level

2–4 pCi/L (Zone 2)

Herculaneum and the 63048 zip code are located in Jefferson County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Herculaneum, MO

What EPA Radon Zone is Herculaneum in?

Herculaneum and the 63048 zip code are in Jefferson 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.

How much does radon mitigation cost in Herculaneum?

Radon mitigation in Herculaneum 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 Herculaneum?

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.

Most Active Radon Markets in Missouri

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Troy	8.50 pCi/L	4
Lees Summit	7.00 pCi/L	3
Columbia	3.00 pCi/L	2
House Springs	7.00 pCi/L	1
Kansas City	7.00 pCi/L	1
Springfield	7.00 pCi/L	1
Independence	5.00 pCi/L	1
Wentzville	No submissions	0