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Saint Marys, PA Radon Levels

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


Saint Marys, PA Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County Elk County, PA
Zip Code 15857
Avg. User Level 2.00 pCi/L
User Tests 1

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.

0
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.

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Saint Marys, PA Radon Levels

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

Radon LevelCityHome AgeFoundation
2 pCi/L Saint Marys, PA 51-99 Years Full Basement

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

Radon Readings Near Saint Marys, PA

Compare radon levels in Saint Marys with the closest nearby cities that have user-submitted test data.

CityDistanceAvg User LevelReadings
Emporium 16.5 mi 6.00 pCi/L 1
Du Bois 23.4 mi 20.00 pCi/L 1
Clearfield 28.7 mi 12.00 pCi/L 1
Reynoldsville 28.9 mi 6.00 pCi/L 1
Grampian 31.0 mi 19.00 pCi/L 1
Roulette 31.4 mi 20.00 pCi/L 1
Curwensville 32.0 mi 4.00 pCi/L 1
Brookville 33.1 mi 8.00 pCi/L 3

Elk County Radon Profile

Elk County is mapped as EPA Radon Zone 2, where the local geology is predicted to produce moderate indoor screening levels between 2 and 4 pCi/L. Homeowner-submitted tests from 1 city in Elk County average 2.00 pCi/L across 1 test — below the EPA's 4 pCi/L action level, though radon varies sharply from home to home. 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 Elk County.

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.