Prairie Du Rocher, IL Radon Levels

Q: What EPA Radon Zone is Prairie Du Rocher in?

Prairie Du Rocher is in Randolph County, EPA Zone 2.

Q: How much does radon mitigation cost in Prairie Du Rocher?

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

Check local Prairie Du Rocher radon levels and find certified testing and mitigation professionals to keep your home safe

Prairie Du Rocher, IL Radon Facts

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

County Randolph County, IL

Zip Code 62277

This historic community in Randolph County sits within the St. Louis metropolitan area, where Mississippi River floodplain deposits overlay limestone formations that can produce moderate radon levels. Given the limited testing data available for zip code 62277, residents should prioritize radon testing to understand their individual home's risk profile.

7.68

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 7.68 pCi/L, based on 22 tests from 10 nearby cities. No readings have been submitted for Prairie Du Rocher yet, so the closest recorded data is shown as a benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Prairie Du Rocher, IL Radon Mitigation

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

Need Radon Mitigation or Testing in Prairie Du Rocher?

100% Free, No-Obligation Quotes
Matches You with State-Licensed Randolph County Pros

1-800-299-3578 217-717-8001 (local) Toll-free · Mon–Fri 8am–6pm ET

Radon Readings Near Prairie Du Rocher, IL

No homeowner tests have been submitted for Prairie Du Rocher 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
Waterloo	16.8 mi	9.20 pCi/L	5
Marissa	21.9 mi	4.00 pCi/L	1
Columbia	24.8 mi	8.00 pCi/L	4
Campbell Hill	30.2 mi	1.00 pCi/L	1
Belleville	31.6 mi	7.33 pCi/L	3
Mascoutah	31.8 mi	6.50 pCi/L	2
O Fallon	35.5 mi	6.00 pCi/L	1
Fairview Heights	35.8 mi	9.00 pCi/L	1

Randolph County Radon Profile

Randolph County is mapped as EPA Radon Zone 2, where the local geology is predicted to produce moderate indoor screening levels between 2 and 4 pCi/L. User-submitted readings are still sparse within Randolph County itself, so the nearby measurements shown on this page provide the closest real-world picture of local radon conditions. 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 Randolph County.

Radon FAQ for Prairie Du Rocher, IL

What EPA Radon Zone is Prairie Du Rocher in?

Prairie Du Rocher and the 62277 zip code are in Randolph 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 Prairie Du Rocher?

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

Radon mitigation in Prairie Du Rocher 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 Prairie Du Rocher?

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.