Winnebago County, WI

ZIP 54985

In ZIP 54985, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Oshkosh Waterworks meets every EPA legal limit; 13 contaminants are above health goals, led by lead at 22× California’s Public Health Goal.
• Closer to Superfund sites than 66% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: A P Nonweiler Co Inc (98%), mostly diisocyanates.
• Fine particles (PM2.5) average 7.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 82,862 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 54985

• Superfund sites nearbyD
• Factories and industrial sitesD
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityB
• Drinking water qualityD
• Pesticide useD
• Neighborhood health statusC
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsD

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

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