Farmington, MO Radon Mitigation and Testing

Q: What is the average radon level in Farmington, MO?

Based on 1 user-submitted tests, the average radon level is 10.00 pCi/L.

Q: What EPA Radon Zone is Farmington in?

Farmington is in St Francois County, EPA Zone Unknown.

Q: How much does radon mitigation cost in Farmington?

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

Avg: 10.00 pCi/L

St Francois County

EPA Zone Unknown

1 user test

Farmington is located in St Francois County, Missouri. With 1 user-submitted readings averaging 10.00 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 63640 zip code.

10.00

pCi/L average

Above EPA Action Level

Based on 1 user-submitted radon test for homes in Farmington, MO. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Farmington, MO Radon Mitigation

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

Farmington, MO Radon Testing

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

Farmington, Missouri Radon Levels

User-submitted radon test readings from homes in the Farmington area.

Radon Level	City	Home Age	Foundation	Submitted
10 pCi/L	Farmington, MO	21-50 Years	Full Basement	Jun 2018

Have a radon test result for Farmington? Submit your reading to help other homeowners.

Farmington Radon Facts

Key details about the radon risk profile for Farmington and the 63640 zip code area.

EPA Radon Zone

Unknown

County

St Francois County, MO

Zip Code

63640

Predicted Screening Level

Unknown

Avg. User Submitted Level

10.00 pCi/L

User Tests Submitted

Farmington and the 63640 zip code are located in St Francois County, which has an EPA assigned Radon Zone of Unknown. A radon zone of Unknown does not have sufficient data for classification. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Farmington, MO

What is the average radon level in Farmington, MO?

Based on 1 user-submitted test, the average radon level in Farmington is 10.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Farmington in?

Farmington and the 63640 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.

How much does radon mitigation cost in Farmington?

Radon mitigation in Farmington 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 Farmington?

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