Morris County, NJ

ZIP 07930

In ZIP 07930, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Mt Olive Twp Tinc Farm has 2 contaminants at or over an EPA legal limit; 10 contaminants are above health goals, led by nitrate at 1.6× https://journals.plos.org/water/article?id=10.1371/journal.pwat.0000329, https://www.polkcountyiowa.gov/media/lixlchbz/ciswra-currents-of-change_final-scientific-assessment-of-source-water-research-report_jun272025.pdf#page=222.
• Nearest Superfund site: Combe Fill South Landfill, 1.5 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Howmet Castings & Services-Casting Div (34%), mostly cobalt.
• Fine particles (PM2.5) average 6.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 21,359 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 07930

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

Based on 6 census tracts · compiled October 25, 2026 · how each grade works and its sources

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