Dane County, WI

ZIP 53559

In ZIP 53559, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Lake Mills Waterworks meets every EPA legal limit; 10 contaminants are above health goals, led by arsenic at 191× California’s Public Health Goal.
• Nearest Superfund site: Stoughton City Landfill, 9.5 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Evonik Corp (35%), mostly ethylene oxide.
• Fine particles (PM2.5) average 6.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 204,309 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 53559

• Superfund sites nearbyA to C
• Factories and industrial sitesB
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityB
• Drinking water qualityB to D
• Pesticide useF
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsC to F

Based on 5 census tracts · compiled October 25, 2026 · how each grade works and its sources

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