Hazelwood, MO Radon Mitigation and Testing

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

Based on 1 user-submitted tests, the average radon level is 20.00 pCi/L.

Q: What EPA Radon Zone is Hazelwood in?

Hazelwood is in St Louis County, EPA Zone Unknown.

Q: How much does radon mitigation cost in Hazelwood?

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

Avg: 20.00 pCi/L

St Louis County

EPA Zone Unknown

1 user test

Part of St. Louis County in the St. Louis Metro area, Hazelwood recorded a notably high average radon level of 20.0 pCi/L based on testing from zip code 63042. This reading significantly exceeds the EPA's 4.0 pCi/L action threshold, reflecting the area's limestone bedrock and loess deposits that create favorable conditions for radon accumulation. Immediate professional radon mitigation is strongly recommended for all homes in this community.

20.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Hazelwood, MO Radon Mitigation

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

Hazelwood, MO Radon Testing

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

Hazelwood, Missouri Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
20 pCi/L	Hazelwood, MO	0-20 Years	Full Basement	Mar 2024

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

Hazelwood Radon Facts

Key details about the radon risk profile for Hazelwood and the 63042 zip code area.

EPA Radon Zone

Unknown

County

St Louis County, MO

Zip Code

63042

Predicted Screening Level

Unknown

Avg. User Submitted Level

20.00 pCi/L

User Tests Submitted

Hazelwood and the 63042 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 Hazelwood, MO

What is the average radon level in Hazelwood, MO?

Based on 1 user-submitted test, the average radon level in Hazelwood is 20.00 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 Hazelwood in?

Hazelwood and the 63042 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 Hazelwood?

Radon mitigation in Hazelwood 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 Hazelwood?

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