Mark Center, OH Radon Mitigation and Testing

Q: What EPA Radon Zone is Mark Center in?

Mark Center is in Defiance County, EPA Zone 2.

Q: How much does radon mitigation cost in Mark Center?

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

Defiance County

EPA Zone 2

Found in Defiance County in northwestern Ohio, Mark Center sits atop glacial lake deposits that can influence radon migration patterns. Testing data for this rural community remains limited, making individual home testing particularly important for establishing baseline readings. The area's agricultural setting and typical Midwest basement construction create conditions where radon levels can vary from property to property.

Mark Center, OH Radon Mitigation

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

Mark Center, OH Radon Testing

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

Mark Center Radon Facts

Key details about the radon risk profile for Mark Center and the 43536 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Defiance County, OH

Zip Code

43536

Predicted Screening Level

2–4 pCi/L (Zone 2)

Mark Center and the 43536 zip code are located in Defiance County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Mark Center, OH

What EPA Radon Zone is Mark Center in?

Mark Center and the 43536 zip code are in Defiance County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

How much does radon mitigation cost in Mark Center?

Radon mitigation in Mark Center 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 Mark Center?

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