Addison, PA Radon Mitigation and Testing

Q: What EPA Radon Zone is Addison in?

Addison is in Somerset County, EPA Zone 2.

Q: How much does radon mitigation cost in Addison?

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

Somerset County

EPA Zone 2

Situated in Somerset County in the Laurel Highlands region, Addison occupies mountainous terrain where Appalachian geology and coal-bearing formations can contribute to radon accumulation. With limited testing data for zip code 15411, homeowners should consider professional radon testing given the area's geological characteristics. Pennsylvania's EPA Zone 2 designation reflects moderate radon risk across this southwestern county.

Addison, PA Radon Mitigation

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

Addison, PA Radon Testing

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

Addison Radon Facts

Key details about the radon risk profile for Addison and the 15411 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Somerset County, PA

Zip Code

15411

Predicted Screening Level

2–4 pCi/L (Zone 2)

Addison and the 15411 zip code are located in Somerset 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 Addison, PA

What EPA Radon Zone is Addison in?

Addison and the 15411 zip code are in Somerset 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 Addison?

Radon mitigation in Addison 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 Addison?

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