Grand Valley, PA Radon Mitigation and Testing

Q: What EPA Radon Zone is Grand Valley in?

Grand Valley is in Warren County, EPA Zone 2.

Q: How much does radon mitigation cost in Grand Valley?

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

Warren County

EPA Zone 2

Found in Warren County in northwestern Pennsylvania, Grand Valley sits in EPA Zone 2 where sedimentary bedrock and glacial deposits create moderate radon potential. Testing data is currently limited for the 16420 zip code area, making individual home radon testing important for residents. The region's mix of older rural homes with basements and varying foundation types can influence how radon accumulates in different properties.

Grand Valley, PA Radon Mitigation

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

Grand Valley, PA Radon Testing

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

Grand Valley Radon Facts

Key details about the radon risk profile for Grand Valley and the 16420 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Warren County, PA

Zip Code

16420

Predicted Screening Level

2–4 pCi/L (Zone 2)

Grand Valley and the 16420 zip code are located in Warren 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 Grand Valley, PA

What EPA Radon Zone is Grand Valley in?

Grand Valley and the 16420 zip code are in Warren 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 Grand Valley?

Radon mitigation in Grand Valley 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 Grand Valley?

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 Pennsylvania

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
State College	10.00 pCi/L	14
Chambersburg	10.14 pCi/L	7
Easton	12.33 pCi/L	6
Butler	12.40 pCi/L	5
Dingmans Ferry	5.80 pCi/L	5
Hanover	14.00 pCi/L	4
Mechanicsburg	13.75 pCi/L	4
Greenville	10.75 pCi/L	4
Pittsburgh	9.25 pCi/L	4
Albrightsville	9.00 pCi/L	4
Philadelphia	8.00 pCi/L	4
Lackawaxen	15.33 pCi/L	3
York	11.67 pCi/L	3
Elizabethtown	9.67 pCi/L	3
Johnstown	7.33 pCi/L	3
West Chester	6.67 pCi/L	3
Danville	5.67 pCi/L	3
Springfield	5.67 pCi/L	3
East Stroudsburg	5.00 pCi/L	3
Langhorne	4.67 pCi/L	3