Lapeer County, MI

ZIP 48421

In ZIP 48421, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Lapeer, City Of has 1 contaminant at or over an EPA legal limit; 4 contaminants are above health goals, led by arsenic at 6,367× California’s Public Health Goal.
• Nearest Superfund site: Forest Waste Products, 6.5 miles away.
• Largest share of modeled toxic air from industry: General Motors LLC Orion Assembly Center (42%), mostly formaldehyde.
• Fine particles (PM2.5) average 6.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 127,424 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 48421

• Superfund sites nearbyA to D
• Factories and industrial sitesA to B
• Oil and gas wellsA to D
• Parks and nature nearbyB to C
• Air qualityA to B
• Drinking water qualityA to F
• Pesticide useD to F
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsB to C

Based on 8 census tracts · compiled October 25, 2026 · how each grade works and its sources

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