Mercer County, NJ

ZIP 08534

In ZIP 08534, 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: Montgomery Township Housing Development, 7.7 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Custom Alloy Corp (47%), mostly chromium.
• Fine particles (PM2.5) average 6.8 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 08534

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

Based on 4 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…