Monticello, MO Radon Mitigation and Testing

Q: What EPA Radon Zone is Monticello in?

Monticello is in Lewis County, EPA Zone 2.

Q: How much does radon mitigation cost in Monticello?

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

Lewis County

EPA Zone 2

Rural Lewis County in northeast Missouri sits over limestone bedrock formations that can produce variable radon levels depending on local geology. The area's mix of older farmhouses and manufactured homes presents different radon entry pathways and accumulation patterns. With limited testing data for zip code 63457, residents should conduct individual radon tests to assess their specific exposure risk.

Monticello, MO Radon Mitigation

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

Monticello, MO Radon Testing

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

Monticello Radon Facts

Key details about the radon risk profile for Monticello and the 63457 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Lewis County, MO

Zip Code

63457

Predicted Screening Level

2–4 pCi/L (Zone 2)

Monticello and the 63457 zip code are located in Lewis 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 Monticello, MO

What EPA Radon Zone is Monticello in?

Monticello and the 63457 zip code are in Lewis 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 Monticello?

Radon mitigation in Monticello 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 Monticello?

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