Williamsport, IN Radon Mitigation and Testing

Q: What EPA Radon Zone is Williamsport in?

Williamsport is in Warren County, EPA Zone 1.

Q: How much does radon mitigation cost in Williamsport?

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

Warren County

EPA Zone 1

Williamsport lies in Warren County within the Lafayette Metro area, where Indiana's glacial till soils over limestone bedrock create favorable conditions for radon accumulation. Testing data for the 47993 zip code is currently unavailable, making radon testing essential for homeowners. The region's agricultural landscape often features homes with full basements where radon can concentrate.

Williamsport, IN Radon Mitigation

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

Williamsport, IN Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Williamsport Radon Facts

Key details about the radon risk profile for Williamsport and the 47993 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Warren County, IN

Zip Code

47993

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Williamsport and the 47993 zip code are located in Warren County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Williamsport, IN

What EPA Radon Zone is Williamsport in?

Williamsport and the 47993 zip code are in Warren 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.

How much does radon mitigation cost in Williamsport?

Radon mitigation in Williamsport 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 Williamsport?

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.

Most Active Radon Markets in Indiana

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Bloomington	8.14 pCi/L	7
Kokomo	7.40 pCi/L	5
Lafayette	15.00 pCi/L	3
Valparaiso	10.00 pCi/L	3
Avon	6.00 pCi/L	3
West Lafayette	10.50 pCi/L	2
Dyer	9.50 pCi/L	2
Columbus	7.50 pCi/L	2
Noblesville	7.00 pCi/L	2
Westfield	7.00 pCi/L	2
Fishers	6.50 pCi/L	2
Corydon	6.00 pCi/L	2
Warsaw	5.50 pCi/L	2
Indianapolis	4.00 pCi/L	2
Newburgh	8.00 pCi/L	1
Logansport	7.00 pCi/L	1
Terre Haute	5.00 pCi/L	1
Muncie	4.00 pCi/L	1
Brownsburg	No submissions	0