Lehigh County, PA

ZIP 18103

In ZIP 18103, 10 of the 12 things we check have at least one part graded D or F.

• Drinking water: City Of Bethlehem meets every EPA legal limit; 7 contaminants are above health goals, led by lead at 43× California’s Public Health Goal.
• Nearest Superfund site: Voortman Farm, 3.9 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: B. Braun Medical Inc Manufacturing Div (45%), mostly ethylene oxide.
• Fine particles (PM2.5) average 8.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 91,749 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 18103

• Superfund sites nearbyD to F
• Factories and industrial sitesD to F
• Oil and gas wellsA
• Parks and nature nearbyC to F
• Air qualityC to F
• Drinking water qualityD to F
• Pesticide useC to F
• Neighborhood health statusB to D
• Past wildfire impactsA
• Past flood impactsD
• Noise levelsA to D
• Radiation signalsD to F

Based on 15 census tracts · compiled September 10, 2026 · how each grade works and its sources

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