Fenton, MO Radon Levels

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

Based on 2 user-submitted tests, the average radon level is 16.00 pCi/L.

Q: What EPA Radon Zone is Fenton in?

Fenton is in St Louis County, EPA Zone Unknown.

Q: How much does radon mitigation cost in Fenton?

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

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

Fenton, MO Radon Facts

EPA Radon Zone Unknown Unknown

County St Louis County, MO

Zip Code 63026

Avg. User Level 16.00 pCi/L

User Tests 2

Fenton in St Louis County recorded an average radon level of 14.67 pCi/L, substantially exceeding the EPA's 4.0 pCi/L action level. This suburban St. Louis community sits over limestone bedrock that commonly produces elevated radon readings throughout the metro area. Given these high levels in zip code 63026, all residents should test their homes and implement mitigation systems if readings confirm elevated radon concentrations.

16.00

pCi/L average

Above EPA Action Level

Based on 2 user-submitted radon tests for homes in Fenton, MO. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Fenton, MO Radon Mitigation

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

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Fenton, Missouri Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
12 pCi/L	Fenton, MO	51-99 Years	Full Basement	Nov 2024
20 pCi/L	Fenton, MO	21-50 Years	Full Basement	Nov 2016

Have a radon test result for Fenton? 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 Fenton, MO

What is the average radon level in Fenton, MO?

Based on 2 user-submitted tests, the average radon level in Fenton is 16.00 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 Fenton in?

Fenton and the 63026 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 Fenton?

Radon mitigation in Fenton 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 Fenton?

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 Fenton, MO

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

City	Distance	Avg User Level	Submissions
Arnold	6.6 mi	10.50 pCi/L	2
Imperial	6.7 mi	13.00 pCi/L	1
Ballwin	7.5 mi	4.00 pCi/L	1
House Springs	7.8 mi	7.00 pCi/L	1
Chesterfield	11.2 mi	5.00 pCi/L	1
Saint Charles	19.0 mi	5.00 pCi/L	1
Hazelwood	20.1 mi	20.00 pCi/L	1
Saint Peters	21.0 mi	7.00 pCi/L	1