Milwaukee County, WI

ZIP 53209

In ZIP 53209, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: North Shore Water Commission meets every EPA legal limit; 8 contaminants are above health goals, led by pfos at 2× California’s Public Health Goal.
• Nearest Superfund site: Moss-American Co., Inc. (kerr-Mcgee Oil Co.), 6.0 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Stainless Foundry & Engineering Inc (22%), mostly chromium.
• Fine particles (PM2.5) average 8.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 4,052 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 53209

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

Based on 22 census tracts · compiled October 25, 2026 · how each grade works and its sources

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