Ballwin, MO Radon Mitigation and Testing

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

Based on 1 user-submitted tests, the average radon level is 4.00 pCi/L.

Q: What EPA Radon Zone is Ballwin in?

Ballwin is in St Louis County, EPA Zone Unknown.

Q: How much does radon mitigation cost in Ballwin?

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

Avg: 4.00 pCi/L

St Louis County

EPA Zone Unknown

1 user test

This established suburban community in St. Louis County features predominantly mid-century and newer homes with full basements typical of the St. Louis Metro region. Current radon testing data for Ballwin remains limited, emphasizing the importance of individual home testing for residents in zip codes 63011 and 63021. Missouri's limestone bedrock and clay soils can contribute to variable radon accumulation patterns throughout the area.

4.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Ballwin, MO Radon Mitigation

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

Ballwin, MO Radon Testing

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

Ballwin Radon Facts

Key details about the radon risk profile for Ballwin and the 63011 zip code area.

EPA Radon Zone

Unknown

County

St Louis County, MO

Zip Code

63011

Predicted Screening Level

Unknown

Avg. User Submitted Level

4.00 pCi/L

User Tests Submitted

Ballwin and the 63011 zip code are located in St Louis 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 Ballwin, MO

What is the average radon level in Ballwin, MO?

Based on 1 user-submitted test, the average radon level in Ballwin is 4.00 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 Ballwin in?

Ballwin and the 63011 zip code are in St Louis 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 Ballwin?

Radon mitigation in Ballwin 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 Ballwin?

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