South Portsmouth, KY Radon Levels

Q: What EPA Radon Zone is South Portsmouth in?

South Portsmouth is in Greenup County, EPA Zone 2.

Q: How much does radon mitigation cost in South Portsmouth?

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

Check local South Portsmouth radon levels and find certified testing and mitigation professionals to keep your home safe

South Portsmouth, KY Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Greenup County, KY

Zip Code 41174

Found in Greenup County as part of the Huntington Metro region, South Portsmouth lies along the Ohio River where alluvial deposits meet underlying limestone and shale formations. Radon testing data for the 41174 zip code area is currently limited, emphasizing the importance of individual home testing. The community's riverside location and varied housing types, from older riverfront homes to newer developments, can produce different radon exposure levels.

10.00

pCi/L area average

Above EPA Action Level

Greenup County average: 10.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for South Portsmouth itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

South Portsmouth, KY Radon Mitigation

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

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Radon Readings Near South Portsmouth, KY

No homeowner tests have been submitted for South Portsmouth yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Russell	21.7 mi	10.00 pCi/L	1
Ashland	25.6 mi	4.00 pCi/L	1
Catlettsburg	30.8 mi	6.00 pCi/L	1
Flemingsburg	42.1 mi	8.00 pCi/L	2

Greenup County Radon Profile

EPA mapping assigns Greenup County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 1 city in Greenup County average 10.00 pCi/L across 1 test — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Greenup County home regardless of zone or a neighbor's results.

Radon FAQ for South Portsmouth, KY

What EPA Radon Zone is South Portsmouth in?

South Portsmouth and the 41174 zip code are in Greenup 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.

Why are radon readings shown from areas near South Portsmouth?

No homeowner radon tests have been submitted for South Portsmouth yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Greenup County average—are the best available indicator of local conditions until South Portsmouth homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

How much does radon mitigation cost in South Portsmouth?

Radon mitigation in South 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 South 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.