Chester County, PA

ZIP 19520

In ZIP 19520, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Buckingham Preserve has 2 contaminants at or over an EPA legal limit; 10 contaminants are above health goals, led by pfoa at 700× California’s Public Health Goal.
• Nearest Superfund site: Walsh Landfill, 2.5 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Carpenter Technology Corp (50%), mostly chromium.
• Fine particles (PM2.5) average 7.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 156,614 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 19520

• Superfund sites nearbyD to F
• Factories and industrial sitesC to D
• Oil and gas wellsA
• Parks and nature nearbyA to C
• Air qualityB to C
• Drinking water qualityB to F
• Pesticide useD
• Neighborhood health statusB to D
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsD to F

Based on 7 census tracts · compiled October 25, 2026 · how each grade works and its sources

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