Oakland County, MI

ZIP 48009

In ZIP 48009, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Troy meets every EPA legal limit; 6 contaminants are above health goals, led by lead at 19× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Oerlikon Metco (US) Troy/Oerlikon Metco (US) Troy (35%), mostly chromium compounds.
• Fine particles (PM2.5) average 8.8 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 48009

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

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

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