Waukesha County, WI

ZIP 53045

In ZIP 53045, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Pewaukee City Water And Sewer Utility has 2 contaminants at or over an EPA legal limit; 16 contaminants are above health goals, led by pfos at 8× California’s Public Health Goal.
• Nearest Superfund site: Waste Management of Wisconsin, Inc. (brookfield Sanitary Landfill), 0.3 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Metaltek International-Wisco Nsin Centrifugal Div (26%), mostly chromium.
• Fine particles (PM2.5) average 7.6 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 53045

• Superfund sites nearbyF
• Factories and industrial sitesD
• Oil and gas wellsA
• Parks and nature nearbyD
• Air qualityC
• Drinking water qualityD to F
• Pesticide useC to D
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to F
• Radiation signalsC to D

Based on 7 census tracts · compiled September 10, 2026 · how each grade works and its sources

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