Westerville, OH Radon Mitigation and Testing

Q: What is the average radon level in Westerville, OH?

Based on 2 user-submitted tests, the average radon level is 14.00 pCi/L.

Q: What EPA Radon Zone is Westerville in?

Westerville is in Franklin County, EPA Zone 1.

Q: How much does radon mitigation cost in Westerville?

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

Avg: 14.00 pCi/L

Franklin County

EPA Zone 1

2 user tests

Spanning both Delaware and Franklin Counties in the Columbus Metro area, Westerville sits on glacial till over limestone and shale bedrock formations. Testing data reveals an alarming average radon level of 14.0 pCi/L, more than three times the EPA's action threshold, making immediate radon mitigation essential for homes in the 43081 and 43082 zip codes.

14.00

pCi/L average

Above EPA Action Level

Based on 2 user-submitted radon tests for homes in Westerville, OH. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Westerville, OH Radon Mitigation

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

Westerville, OH Radon Testing

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

Westerville, Ohio Radon Levels

User-submitted radon test readings from homes in the Westerville area.

Radon Level	City	Home Age	Foundation	Submitted
8 pCi/L	Westerville, OH	0-20 Years	Partial Basement	Nov 2020
20 pCi/L	Westerville, OH	21-50 Years	Partial Basement	Oct 2020

Have a radon test result for Westerville? Submit your reading to help other homeowners.

Westerville Radon Facts

Key details about the radon risk profile for Westerville and the 43081 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Franklin County, OH

Zip Code

43081

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

14.00 pCi/L

User Tests Submitted

Westerville and the 43081 zip code are located in Franklin 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 Westerville, OH

What is the average radon level in Westerville, OH?

Based on 2 user-submitted tests, the average radon level in Westerville is 14.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Westerville in?

Westerville and the 43081 zip code are in Franklin 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 Westerville?

Radon mitigation in Westerville 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 Westerville?

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 Ohio

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

City	Avg User Radon Level	Submissions
Marietta	8.00 pCi/L	5
Cincinnati	5.20 pCi/L	5
Hilliard	11.75 pCi/L	4
Wilmington	5.25 pCi/L	4
Newark	15.00 pCi/L	3
Athens	11.33 pCi/L	3
Findlay	10.33 pCi/L	3
Perrysburg	9.67 pCi/L	3
Powell	8.33 pCi/L	3
Columbus	6.00 pCi/L	3
Chagrin Falls	4.67 pCi/L	3
Hamilton	10.00 pCi/L	2
Chardon	5.50 pCi/L	2
Strongsville	4.50 pCi/L	2
Maineville	10.00 pCi/L	1
Lancaster	9.00 pCi/L	1
West Chester	9.00 pCi/L	1
Amherst	6.00 pCi/L	1
Chillicothe	6.00 pCi/L	1
Lima	5.00 pCi/L	1