La Harpe, IL Radon Levels

Q: What EPA Radon Zone is La Harpe in?

La Harpe is in Hancock County, EPA Zone 1.

Q: How much does radon mitigation cost in La Harpe?

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

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

La Harpe, IL Radon Facts

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

County Hancock County, IL

Zip Code 61450

Located in rural Hancock County along the Mississippi River corridor, La Harpe currently has limited radon testing data available for the 61450 zip code. The area's alluvial river valley soils and underlying sedimentary bedrock can create variable radon conditions across the community. Given the region's typical housing mix of older farmhouses with partial basements and newer rural construction, comprehensive radon testing is recommended for all residential properties.

9.00

pCi/L area average

Above EPA Action Level

Hancock County average: 9.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for La Harpe 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+

La Harpe, 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 La Harpe, IL

No homeowner tests have been submitted for La Harpe 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
Dallas City	8.3 mi	9.00 pCi/L	1
Stronghurst	11.8 mi	13.00 pCi/L	2
Monmouth	28.2 mi	8.00 pCi/L	1
Cuba	41.8 mi	6.00 pCi/L	1
Knoxville	42.2 mi	8.00 pCi/L	1
Quincy	48.3 mi	7.50 pCi/L	2

Hancock County Radon Profile

Hancock 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 1 city in Hancock County average 9.00 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 Hancock County to test, as levels can differ between neighboring homes.

Radon FAQ for La Harpe, IL

What EPA Radon Zone is La Harpe in?

La Harpe and the 61450 zip code are in Hancock 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 La Harpe?

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

Radon mitigation in La Harpe 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 La Harpe?

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.