Silex, MO Radon Levels

Q: What EPA Radon Zone is Silex in?

Silex is in Lincoln County, EPA Zone 2.

Q: Why are radon readings shown from areas near Silex?

No homeowner radon tests have been submitted for Silex yet, so readings from the closest cities and the Lincoln County average are used as the best available indicator of local conditions. The EPA recommends testing every individual home.

Q: How much does radon mitigation cost in Silex?

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

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

Silex, MO Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Lincoln County, MO

Zip Code 63377

Located in Lincoln County within the St. Louis Metro area, Silex sits on limestone bedrock typical of eastern Missouri's karst terrain. Testing data for ZIP code 63377 is currently unavailable, but the geological conditions suggest homeowners should test for radon, especially in older homes with basement foundations common to rural Missouri communities.

8.50

pCi/L area average

Above EPA Action Level

Lincoln County average: 8.50 pCi/L, based on 4 user-submitted tests across 1 city in the county. No homeowner readings have been submitted for Silex itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Silex, MO Radon Mitigation

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

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Radon Readings Near Silex, MO

No homeowner tests have been submitted for Silex yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Troy	8.9 mi	8.50 pCi/L	4
Lake Saint Louis	26.1 mi	5.00 pCi/L	2
O Fallon	27.9 mi	7.75 pCi/L	4
Saint Peters	32.2 mi	7.00 pCi/L	1
Saint Charles	35.3 mi	5.00 pCi/L	1
New Haven	38.9 mi	5.00 pCi/L	1
Chesterfield	41.2 mi	5.00 pCi/L	1
Labadie	42.1 mi	4.00 pCi/L	1

Lincoln County Radon Profile

EPA mapping assigns Lincoln County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 1 city in Lincoln County average 8.50 pCi/L across 4 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Lincoln County home regardless of zone or a neighbor's results.

Radon FAQ for Silex, MO

What EPA Radon Zone is Silex in?

Silex and the 63377 zip code are in Lincoln County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

Why are radon readings shown from areas near Silex?

No homeowner radon tests have been submitted for Silex yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Lincoln County average—are the best available indicator of local conditions until Silex homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

How much does radon mitigation cost in Silex?

Radon mitigation in Silex 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 Silex?

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.