Hazelwood, MO Radon Levels

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.

Check local Hazelwood radon levels and find certified testing and mitigation professionals to keep your home safe

Hazelwood, MO Radon Facts

EPA Radon Zone Unknown Unknown

County St Louis County, MO

Zip Code 63042

Avg. User Level 20.00 pCi/L

User Tests 1

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.

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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.

St Louis County Radon Profile

St Louis County has not been assigned a definitive EPA radon zone, so the agency recommends that every home be tested regardless of predicted risk. Homeowner-submitted tests from 4 cities in St Louis County average 12.20 pCi/L across 5 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in St Louis County.

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.

Radon Levels Near Hazelwood, MO

User-submitted radon levels from the cities closest to Hazelwood with recorded test data. Explore nearby communities to compare local readings.

City	Distance	Avg User Level	Submissions
Saint Charles	10.4 mi	5.00 pCi/L	1
Saint Peters	13.8 mi	7.00 pCi/L	1
Chesterfield	14.8 mi	5.00 pCi/L	1
Ballwin	16.1 mi	4.00 pCi/L	1
O Fallon	19.9 mi	7.75 pCi/L	4
Fenton	20.1 mi	16.00 pCi/L	2
Lake Saint Louis	22.6 mi	5.00 pCi/L	2
Arnold	24.2 mi	10.50 pCi/L	2