Mercer County, NJ

ZIP 08520

In ZIP 08520, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Nj American Water - Raritan has 1 contaminant at or over an EPA legal limit; 24 contaminants are above health goals, led by pfos at 3.9× California’s Public Health Goal.
• Nearest Superfund site: Jis Landfill, 7.5 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Linde Gas & Equipment Inc. (29%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.4 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 08520

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

Based on 8 census tracts · compiled September 10, 2026 · how each grade works and its sources

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