Oconto County, WI

ZIP 54101

In ZIP 54101, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Oconto Falls Waterworks meets every EPA legal limit; 8 contaminants are above health goals, led by arsenic at 565× California’s Public Health Goal.
• Closer to Superfund sites than 80% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Astro Industries Inc (27%), mostly chromium.
• Fine particles (PM2.5) average 6.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 94,505 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 54101

• Superfund sites nearbyD to F
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityA
• Drinking water qualityA to C
• Pesticide useF
• Neighborhood health statusC to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsB

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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