Germantown, IL Radon Levels

Q: What EPA Radon Zone is Germantown in?

Germantown is in Clinton County, EPA Zone 2.

Q: How much does radon mitigation cost in Germantown?

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

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

Germantown, IL Radon Facts

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

County Clinton County, IL

Zip Code 62245

Germantown in Clinton County within the St. Louis Metro area benefits from Mississippi River floodplain geology, which can create variable radon conditions throughout the community. While testing data for this 62245 area remains limited, individual homes near limestone bluffs may experience elevated readings. Professional radon testing helps homeowners understand their specific indoor air quality conditions in this geologically transitional area.

13.00

pCi/L area average

Above EPA Action Level

Clinton County average: 13.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Germantown 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+

Germantown, IL 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 Germantown, IL

No homeowner tests have been submitted for Germantown 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
Carlyle	9.6 mi	13.00 pCi/L	1
Mascoutah	14.3 mi	6.50 pCi/L	2
Lebanon	14.5 mi	10.50 pCi/L	2
Highland	16.6 mi	6.00 pCi/L	1
O Fallon	19.2 mi	6.00 pCi/L	1
Troy	21.5 mi	4.00 pCi/L	1
Marissa	23.8 mi	4.00 pCi/L	1
Belleville	24.6 mi	7.33 pCi/L	3

Clinton County Radon Profile

The soils and bedrock of Clinton County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Homeowner-submitted tests from 1 city in Clinton County average 13.00 pCi/L across 1 test — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Clinton County to test, as levels can differ between neighboring homes.

Radon FAQ for Germantown, IL

What EPA Radon Zone is Germantown in?

Germantown and the 62245 zip code are in Clinton 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 Germantown?

No homeowner radon tests have been submitted for Germantown yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Clinton County average—are the best available indicator of local conditions until Germantown 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 Germantown?

Radon mitigation in Germantown 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 Germantown?

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.