Charleroi, PA Radon Levels

Q: What EPA Radon Zone is Charleroi in?

Charleroi is in Washington County, EPA Zone 2.

Q: How much does radon mitigation cost in Charleroi?

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

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

Charleroi, PA Radon Facts

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

County Washington County, PA

Zip Code 15022

Situated in Washington County within the Pittsburgh metropolitan area, Charleroi sits atop Pennsylvanian-era bedrock formations known for elevated radon potential throughout southwestern Pennsylvania. The community's older housing stock, much of it built during the industrial era with stone and block foundations, may provide multiple pathways for radon entry. Regular testing is essential given the region's documented radon risks.

7.80

pCi/L area average

Above EPA Action Level

Washington County average: 7.80 pCi/L, based on 5 user-submitted tests across 3 cities in the county. No homeowner readings have been submitted for Charleroi 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+

Charleroi, PA 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 Charleroi, PA

No homeowner tests have been submitted for Charleroi 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
West Newton	9.7 mi	6.00 pCi/L	1
South Park	11.3 mi	7.00 pCi/L	2
Bethel Park	14.0 mi	10.00 pCi/L	1
Mckeesport	14.6 mi	7.00 pCi/L	1
Canonsburg	15.8 mi	8.33 pCi/L	3
Irwin	16.2 mi	10.00 pCi/L	1
Washington	17.9 mi	5.00 pCi/L	1
West Mifflin	17.9 mi	9.00 pCi/L	1

Washington County Radon Profile

EPA mapping assigns Washington 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 3 cities in Washington County average 7.80 pCi/L across 5 tests — 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 Washington County home regardless of zone or a neighbor's results.

Radon FAQ for Charleroi, PA

What EPA Radon Zone is Charleroi in?

Charleroi and the 15022 zip code are in Washington 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 Charleroi?

No homeowner radon tests have been submitted for Charleroi yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Washington County average—are the best available indicator of local conditions until Charleroi 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 Charleroi?

Radon mitigation in Charleroi 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 Charleroi?

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.