Chester County, PA

ZIP 19442

In ZIP 19442, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Valley Run Water System meets every EPA legal limit; 10 contaminants are above health goals, led by pfos at 2.3× California’s Public Health Goal.
• Nearest Superfund site: Kimberton, 0.3 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Carpenter Technology Corp (51%), mostly chromium compounds.
• Fine particles (PM2.5) average 7.5 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 19442

• Superfund sites nearbyF
• Factories and industrial sitesD
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityC
• Drinking water qualityF
• Pesticide useD
• Neighborhood health statusC
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsD
• Radiation signalsD

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…