Upper Darby, PA Radon Levels

Q: What EPA Radon Zone is Upper Darby in?

Upper Darby is in Delaware County, EPA Zone 1.

Q: How much does radon mitigation cost in Upper Darby?

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

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

Upper Darby, PA Radon Facts

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

County Delaware County, PA

Zip Code 19082

Located in Delaware County within the Philadelphia Metro area, Upper Darby's residential community in zip code 19082 has limited radon testing data available. Given Pennsylvania's geological conditions and the state's high radon potential, homeowners should prioritize professional radon testing regardless of limited local data. Testing remains the only reliable way to determine your home's individual radon risk.

5.59

pCi/L area average

Above EPA Action Level

Delaware County average: 5.59 pCi/L, based on 22 user-submitted tests across 13 cities in the county. No homeowner readings have been submitted for Upper Darby 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+

Upper Darby, 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 Upper Darby, PA

No homeowner tests have been submitted for Upper Darby 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
Lansdowne	1.4 mi	4.00 pCi/L	1
Drexel Hill	2.0 mi	2.50 pCi/L	2
Clifton Heights	2.7 mi	5.00 pCi/L	1
Ardmore	3.4 mi	6.00 pCi/L	2
Springfield	4.0 mi	5.67 pCi/L	3
Bala Cynwyd	4.1 mi	1.00 pCi/L	1
Morton	4.6 mi	4.00 pCi/L	1
Broomall	5.0 mi	7.00 pCi/L	2

Delaware County Radon Profile

The bedrock and soils beneath Delaware 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 13 cities in Delaware County average 5.59 pCi/L across 22 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 Delaware County.

Radon FAQ for Upper Darby, PA

What EPA Radon Zone is Upper Darby in?

Upper Darby and the 19082 zip code are in Delaware 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 Upper Darby?

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

Radon mitigation in Upper Darby 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 Upper Darby?

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.