Stewart, OH Radon Mitigation and Testing

Q: What EPA Radon Zone is Stewart in?

Stewart is in Athens County, EPA Zone 2.

Q: How much does radon mitigation cost in Stewart?

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

Athens County

EPA Zone 2

Nestled in southeastern Ohio's Athens County, Stewart sits within the Appalachian foothills where Pennsylvanian shale and sandstone formations create moderate radon potential. Testing data for zip code 45778 remains limited, making professional radon assessment important for area homeowners. The region's hilly terrain and variable geology can produce significantly different radon levels even within the same neighborhood.

Stewart, OH Radon Mitigation

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

Stewart, OH Radon Testing

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

Stewart Radon Facts

Key details about the radon risk profile for Stewart and the 45778 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Athens County, OH

Zip Code

45778

Predicted Screening Level

2–4 pCi/L (Zone 2)

Stewart and the 45778 zip code are located in Athens 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 Stewart, OH

What EPA Radon Zone is Stewart in?

Stewart and the 45778 zip code are in Athens 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 Stewart?

Radon mitigation in Stewart 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 Stewart?

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