Fostoria, OH Radon Mitigation and Testing

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

Based on 2 user-submitted tests, the average radon level is 13.50 pCi/L.

Q: What EPA Radon Zone is Fostoria in?

Fostoria is in Seneca County, EPA Zone 1.

Q: How much does radon mitigation cost in Fostoria?

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

Avg: 13.50 pCi/L

Seneca County

EPA Zone 1

2 user tests

Testing data from Seneca County shows Fostoria has recorded an average radon level of 13.5 pCi/L, significantly exceeding the EPA action level of 4.0 pCi/L. Located in the Toledo Metro area, this community's elevated readings reflect the region's glacial till soils over limestone bedrock that commonly produce high radon concentrations. Immediate professional mitigation is strongly recommended for homes with these elevated levels.

13.50

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Fostoria, OH Radon Mitigation

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

Fostoria, OH Radon Testing

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

Fostoria, Ohio Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
20 pCi/L	Fostoria, OH	21-50 Years	Full Basement	Dec 2025
7 pCi/L	Fostoria, OH	51-99 Years	Partial Basement	Apr 2023

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

Fostoria Radon Facts

Key details about the radon risk profile for Fostoria and the 44830 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Seneca County, OH

Zip Code

44830

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

13.50 pCi/L

User Tests Submitted

Fostoria and the 44830 zip code are located in Seneca 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 Fostoria, OH

What is the average radon level in Fostoria, OH?

Based on 2 user-submitted tests, the average radon level in Fostoria is 13.50 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 Fostoria in?

Fostoria and the 44830 zip code are in Seneca 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 Fostoria?

Radon mitigation in Fostoria 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 Fostoria?

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