Oakland County, MI

ZIP 48340

In ZIP 48340, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Auburn Hills meets every EPA legal limit; 6 contaminants are above health goals, led by lead at 33× California’s Public Health Goal.
• Nearest Superfund site: J & L Landfill, 8.4 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Sms Group Technical Services Warren Div (19%), mostly chromium compounds.
• Fine particles (PM2.5) average 8.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 21,843 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 48340

• Superfund sites nearbyA
• Factories and industrial sitesC to D
• Oil and gas wellsA
• Parks and nature nearbyD to F
• Air qualityD
• Drinking water qualityD to F
• Pesticide useB to D
• Neighborhood health statusB to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D

Based on 8 census tracts · compiled September 10, 2026 · how each grade works and its sources

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