York County, PA

ZIP 17402

In ZIP 17402, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Dallastown Yoe Water Auth meets every EPA legal limit; 7 contaminants are above health goals, led by bromodichloromethane at 128× California’s Public Health Goal.
• Nearest Superfund site: Modern Sanitation Landfill, 3.1 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Goodhart Sons Inc. (55%), mostly chromium.
• Fine particles (PM2.5) average 8.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 253,382 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 17402

• Superfund sites nearbyD to F
• Factories and industrial sitesD to F
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityC to F
• Drinking water qualityB to D
• Pesticide useC to D
• Neighborhood health statusB to D
• Past wildfire impactsA
• Past flood impactsB to C
• Noise levelsA to D
• Radiation signalsF

Based on 14 census tracts · compiled October 25, 2026 · how each grade works and its sources

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