Saint Marys, PA Radon Mitigation and Testing

Q: What is the average radon level in Saint Marys, PA?

Based on 1 user-submitted tests, the average radon level is 2.00 pCi/L.

Q: What EPA Radon Zone is Saint Marys in?

Saint Marys is in Elk County, EPA Zone 2.

Q: How much does radon mitigation cost in Saint Marys?

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

Avg: 2.00 pCi/L

Elk County

EPA Zone 2

1 user test

Saint Marys in Elk County sits within Pennsylvania's EPA Zone 2, where moderate radon potential exists due to the region's Appalachian geology. The mountainous terrain and varied bedrock formations around the 15857 zip code can create inconsistent radon conditions. Without local testing data available, homeowners should prioritize professional radon assessment to understand their specific property risk.

2.00

pCi/L average

Below EPA Action Level

Based on 1 user-submitted radon test for homes in Saint Marys, PA. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Saint Marys, PA Radon Mitigation

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

Saint Marys, PA Radon Testing

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

Saint Marys, Pennsylvania Radon Levels

User-submitted radon test readings from homes in the Saint Marys area.

Radon Level	City	Home Age	Foundation	Submitted
2 pCi/L	Saint Marys, PA	51-99 Years	Full Basement	Jun 2026

Have a radon test result for Saint Marys? Submit your reading to help other homeowners.

Saint Marys Radon Facts

Key details about the radon risk profile for Saint Marys and the 15857 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Elk County, PA

Zip Code

15857

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

2.00 pCi/L

User Tests Submitted

Saint Marys and the 15857 zip code are located in Elk 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 Saint Marys, PA

What is the average radon level in Saint Marys, PA?

Based on 1 user-submitted test, the average radon level in Saint Marys is 2.00 pCi/L. This is below the EPA's recommended action level of 4.0 pCi/L. However, we recommend all homes be tested regardless of your neighbor's results.

What EPA Radon Zone is Saint Marys in?

Saint Marys and the 15857 zip code are in Elk 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 Saint Marys?

Radon mitigation in Saint Marys 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 Saint Marys?

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	9.93 pCi/L	15
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