York County, PA

ZIP 17321

In ZIP 17321, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Delta Boro Water Sys meets every EPA legal limit; 7 contaminants are above health goals, led by pfos at 1.8× California’s Public Health Goal.
• Nearest Superfund site: York County Solid Waste and Refuse Authority Landfill, 7.0 miles away.
• Largest share of modeled toxic air from industry: Goodhart Sons Inc. (47%), mostly chromium.
• Fine particles (PM2.5) average 7.0 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 17321

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

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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