Waukesha County, WI

ZIP 53058

In ZIP 53058, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Cambridge Place Of Delafield has 2 contaminants at or over an EPA legal limit; 4 contaminants are above health goals, led by arsenic at 151× California’s Public Health Goal.
• Nearest Superfund site: Oconomowoc Electroplating Co., Inc., 5.2 miles away.
• Largest share of modeled toxic air from industry: Milwaukee Precision Casting (16%), mostly chromium.
• Fine particles (PM2.5) average 6.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 69,527 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 53058

• Superfund sites nearbyA to D
• Factories and industrial sitesC
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityB
• Drinking water qualityC to F
• Pesticide useB to D
• Neighborhood health statusB
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to B
• Radiation signalsD

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

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