Mercer County, NJ

ZIP 08609

In ZIP 08609, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Trenton Water Works meets every EPA legal limit; 11 contaminants are above health goals, led by trichloroacetic acid at 166× California’s Public Health Goal.
• Nearest Superfund site: Roebling Steel Co., 6.3 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Linde Gas & Equipment Inc. (83%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.9 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 08609

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

Based on 8 census tracts · compiled October 25, 2026 · how each grade works and its sources

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