Portsmouth, OH Radon Mitigation and Testing

Q: What EPA Radon Zone is Portsmouth in?

Portsmouth is in Scioto County, EPA Zone 2.

Q: How much does radon mitigation cost in Portsmouth?

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

Scioto County

EPA Zone 2

Positioned along the Ohio River in Scioto County, this community sits on river valley deposits over Paleozoic bedrock formations. Testing data for zip code 45662 remains unavailable, though the area's geological setting and older housing stock suggest homeowners should pursue professional radon evaluation. River valley locations can experience variable radon levels depending on specific soil and bedrock conditions.

Portsmouth, OH Radon Mitigation

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

Portsmouth, OH Radon Testing

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

Portsmouth Radon Facts

Key details about the radon risk profile for Portsmouth and the 45662 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Scioto County, OH

Zip Code

45662

Predicted Screening Level

2–4 pCi/L (Zone 2)

Portsmouth and the 45662 zip code are located in Scioto 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 Portsmouth, OH

What EPA Radon Zone is Portsmouth in?

Portsmouth and the 45662 zip code are in Scioto 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 Portsmouth?

Radon mitigation in Portsmouth 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 Portsmouth?

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