Sauk County, WI

ZIP 53578

In ZIP 53578, 2 of the 12 things we check have at least one part graded D or F.

• Drinking water: Spring Green Waterworks meets every EPA legal limit; 6 contaminants are above health goals, led by arsenic at 73× California’s Public Health Goal.
• Closer to Superfund sites than 57% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Milwaukee Valve Co LLC (98%), mostly nickel.
• Fine particles (PM2.5) average 6.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 162,947 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 53578

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

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

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