Pleasant Plains, IL Radon Levels

Q: What EPA Radon Zone is Pleasant Plains in?

Pleasant Plains is in Sangamon County, EPA Zone 1.

Q: How much does radon mitigation cost in Pleasant Plains?

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

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

Pleasant Plains, IL Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Sangamon County, IL

Zip Code 62677

Positioned in Sangamon County within the Springfield Metro area, Pleasant Plains sits in central Illinois where glacial till deposits over limestone bedrock create high radon potential typical of the state's EPA Zone 1 designation. Though current radon testing data for this 62677 community is limited, the geological conditions and prevalence of homes with full basements make testing particularly important. Central Illinois's glacial geology provides excellent pathways for radon gas migration from underlying carbonate formations.

5.00

pCi/L area average

Above EPA Action Level

Sangamon County average: 5.00 pCi/L, based on 6 user-submitted tests across 5 cities in the county. No homeowner readings have been submitted for Pleasant Plains 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+

Pleasant Plains, 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 Pleasant Plains, IL

No homeowner tests have been submitted for Pleasant Plains 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
Springfield	11.8 mi	6.50 pCi/L	2
Chatham	13.8 mi	3.00 pCi/L	1
Lincolns New Salem	14.4 mi	8.00 pCi/L	1
Auburn	17.9 mi	6.00 pCi/L	1
Williamsville	18.9 mi	1.00 pCi/L	1
Jacksonville	20.3 mi	9.00 pCi/L	2
Divernon	21.3 mi	7.00 pCi/L	1
Taylorville	36.3 mi	2.00 pCi/L	1

Sangamon County Radon Profile

Sangamon County falls in EPA Radon Zone 1, meaning the local uranium-bearing geology is predicted to drive average indoor radon screening levels above the EPA's 4 pCi/L action threshold. Homeowner-submitted tests from 5 cities in Sangamon County average 5.00 pCi/L across 6 tests — 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 Sangamon County to test, as levels can differ between neighboring homes.

Radon FAQ for Pleasant Plains, IL

What EPA Radon Zone is Pleasant Plains in?

Pleasant Plains and the 62677 zip code are in Sangamon County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

Why are radon readings shown from areas near Pleasant Plains?

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

Radon mitigation in Pleasant Plains 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 Pleasant Plains?

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.