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Chadds Ford, PA Radon Levels

Check local Chadds Ford radon levels and find certified testing and mitigation professionals to keep your home safe


Chadds Ford, PA Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Delaware County, PA
Zip Code 19317

Located in Delaware County within the Philadelphia metro area, Chadds Ford sits on Pennsylvania's Piedmont plateau where metamorphic bedrock and residual soils can contribute to elevated radon potential. Although comprehensive testing data for zip code 19317 remains limited, the geological setting suggests homeowners should prioritize radon evaluation. The area's complex mix of schist and gneiss bedrock creates conditions that commonly produce elevated indoor radon concentrations.

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 Chadds Ford itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Chadds Ford, 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 Chadds Ford, PA

No homeowner tests have been submitted for Chadds Ford 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.

CityDistanceAvg User LevelReadings
Garnet Valley 4.7 mi 7.00 pCi/L 1
Glen Mills 5.1 mi 3.00 pCi/L 1
Kennett Square 6.0 mi 9.00 pCi/L 1
West Chester 6.9 mi 6.67 pCi/L 3
Aston 8.2 mi 4.00 pCi/L 1
Marcus Hook 8.5 mi 13.00 pCi/L 1
Media 10.7 mi 7.00 pCi/L 2
Landenberg 12.1 mi 9.00 pCi/L 1

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 Chadds Ford, PA

What EPA Radon Zone is Chadds Ford in?
Chadds Ford and the 19317 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 Chadds Ford?
No homeowner radon tests have been submitted for Chadds Ford 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 Chadds Ford 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 Chadds Ford?
Radon mitigation in Chadds Ford 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 Chadds Ford?
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.