Middlesex County, NJ

ZIP 08840

In ZIP 08840, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Middlesex Water Company has 1 contaminant at or over an EPA legal limit; 20 contaminants are above health goals, led by lead at 68× California’s Public Health Goal.
• Nearest Superfund site: Chemical Insecticide Corp., 3.0 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Eto Sterilization (30%), mostly ethylene oxide.
• Fine particles (PM2.5) average 8.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 26,553 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 08840

• Superfund sites nearbyF
• Factories and industrial sitesD
• Oil and gas wellsA
• Parks and nature nearbyD to F
• Air qualityD to F
• Drinking water qualityF
• Pesticide useB
• Neighborhood health statusA to B
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsC to D
• Radiation signalsB to C

Based on 5 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…