Mercer County, NJ

ZIP 08691

In ZIP 08691, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Aqua Nj - Hamilton Square has 2 contaminants at or over an EPA legal limit; 13 contaminants are above health goals, led by pfoa at 971× California’s Public Health Goal.
• Nearest Superfund site: Friedman Property, 5.5 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Linde Gas & Equipment Inc. (90%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 48,569 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 08691

• Superfund sites nearbyA to D
• Factories and industrial sitesB to D
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityA to C
• Drinking water qualityB to F
• Pesticide useB to D
• Neighborhood health statusA to C
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to D
• Radiation signalsB to C

Based on 7 census tracts · compiled October 25, 2026 · how each grade works and its sources

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