Franklin, IN Radon Mitigation and Testing

Q: What EPA Radon Zone is Franklin in?

Franklin is in Johnson County, EPA Zone 1.

Q: How much does radon mitigation cost in Franklin?

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

Johnson County

EPA Zone 1

Located in Johnson County south of Indianapolis, Franklin's 46131 zip code area sits within the Indianapolis Metro where glacial drift over limestone bedrock creates favorable conditions for radon gas production. Although specific testing data for this community is currently limited, residents should prioritize radon testing given the geological characteristics common to central Indiana. The area's mix of older residential neighborhoods and newer suburban developments, many with full basements, provides enclosed below-grade spaces where radon typically accumulates most readily.

Franklin, IN Radon Mitigation

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

Franklin, IN Radon Testing

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

Franklin Radon Facts

Key details about the radon risk profile for Franklin and the 46131 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Johnson County, IN

Zip Code

46131

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Franklin and the 46131 zip code are located in Johnson 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 Franklin, IN

What EPA Radon Zone is Franklin in?

Franklin and the 46131 zip code are in Johnson 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 Franklin?

Radon mitigation in Franklin 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 Franklin?

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