Mercer County, NJ

ZIP 08628

In ZIP 08628, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Pa American Water Co Yardley has 2 contaminants at or over an EPA legal limit; 13 contaminants are above health goals, led by lead at 50× California’s Public Health Goal.
• Nearest Superfund site: Roebling Steel Co., 9.5 miles away.
• Largest share of modeled toxic air from industry: Linde Gas & Equipment Inc. (64%), mostly ethylene oxide.
• Fine particles (PM2.5) average 8.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 26,104 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 08628

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

Based on 6 census tracts · compiled September 10, 2026 · how each grade works and its sources

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