Sussex County, NJ

ZIP 07843

In ZIP 07843, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Hopatcong Water Dept has 2 contaminants at or over an EPA legal limit; 17 contaminants are above health goals, led by lead at 33× California’s Public Health Goal.
• Nearest Superfund site: Mansfield Trail Dump, 1.9 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Howmet Castings & Services-Casting Div (29%), mostly ethylene oxide.
• Fine particles (PM2.5) average 6.5 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 38,595 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 07843

• Superfund sites nearbyF
• Factories and industrial sitesB
• Oil and gas wellsA
• Parks and nature nearbyB to D
• Air qualityA
• Drinking water qualityF
• Pesticide useC to D
• Neighborhood health statusB
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsD to F

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

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