Bucks County, PA

ZIP 18940

In ZIP 18940, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Twp Of Upper Makefield has 2 contaminants at or over an EPA legal limit; 14 contaminants are above health goals, led by pfos at 5.8× California’s Public Health Goal.
• Nearest Superfund site: Naval Air Development Center (8 Waste Areas), 4.6 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Linde Gas & Equipment Inc. (48%), mostly ethylene oxide.
• Fine particles (PM2.5) average 8.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 73,480 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 18940

• Superfund sites nearbyA to F
• Factories and industrial sitesB to C
• Oil and gas wellsA
• Parks and nature nearbyC to D
• Air qualityA to D
• Drinking water qualityC to F
• Pesticide useD
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to D
• Radiation signalsC to F

Based on 12 census tracts · compiled September 10, 2026 · how each grade works and its sources

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