Walworth County, WI

ZIP 53191

In ZIP 53191, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Interlaken Resort And Village meets every EPA legal limit; 7 contaminants are above health goals, led by arsenic at 2,095× California’s Public Health Goal.
• Nearest Superfund site: Delavan Municipal Well #4, 5.1 miles away.
• Largest share of modeled toxic air from industry: Arnold Magnetic Technologies - Arnold Engineering (56%), mostly cobalt.
• Fine particles (PM2.5) average 6.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 187,205 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 53191

• Superfund sites nearbyC to D
• Factories and industrial sitesB to C
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityA to B
• Drinking water qualityA to C
• Pesticide useD to F
• Neighborhood health statusC
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsF

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

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