Shiawassee County, MI

ZIP 48872

In ZIP 48872, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Williamston, City Of meets every EPA legal limit; 10 contaminants are above health goals, led by lead at 125× California’s Public Health Goal.
• Nearest Superfund site: Shiawassee River, 9.9 miles away.
• Largest share of modeled toxic air from industry: Mahle Engine Components USA Inc (38%), mostly chromium compounds.
• Fine particles (PM2.5) average 7.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 163,688 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 48872

• Superfund sites nearbyA to D
• Factories and industrial sitesA to B
• Oil and gas wellsA to B
• Parks and nature nearbyC to D
• Air qualityB
• Drinking water qualityD to F
• Pesticide useF
• Neighborhood health statusC to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to C
• Radiation signalsC

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

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