Larimer, PA Radon Levels

Q: What EPA Radon Zone is Larimer in?

Larimer is in Westmoreland County, EPA Zone 1.

Q: How much does radon mitigation cost in Larimer?

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

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

Larimer, PA Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Westmoreland County, PA

Zip Code 15647

Nestled in Westmoreland County within the Pittsburgh Metro region, Larimer (15647) sits atop Pennsylvania's complex geology of shale and sandstone formations that can produce varying radon levels. Testing data for this community remains limited, making individual home testing essential for residents. Given the county's potential for elevated radon due to underlying rock formations, homeowners should prioritize professional radon measurement.

7.50

pCi/L area average

Above EPA Action Level

Westmoreland County average: 7.50 pCi/L, based on 10 user-submitted tests across 8 cities in the county. No homeowner readings have been submitted for Larimer 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+

Larimer, 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 Larimer, PA

No homeowner tests have been submitted for Larimer 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
Irwin	1.8 mi	10.00 pCi/L	1
Jeannette	6.0 mi	5.00 pCi/L	1
Mckeesport	7.3 mi	7.00 pCi/L	1
Murrysville	7.3 mi	5.00 pCi/L	1
Export	8.2 mi	7.50 pCi/L	2
West Newton	9.7 mi	6.00 pCi/L	1
Greensburg	10.0 mi	6.50 pCi/L	2
Verona	11.7 mi	12.00 pCi/L	1

Westmoreland County Radon Profile

The bedrock and soils beneath Westmoreland County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. Homeowner-submitted tests from 8 cities in Westmoreland County average 7.50 pCi/L across 10 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Westmoreland County.

Radon FAQ for Larimer, PA

What EPA Radon Zone is Larimer in?

Larimer and the 15647 zip code are in Westmoreland County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

Why are radon readings shown from areas near Larimer?

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

Radon mitigation in Larimer 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 Larimer?

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.