Shiawassee County, MI

ZIP 48418

In ZIP 48418, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Argentine Care Center meets every EPA legal limit; 4 contaminants are above health goals, led by arsenic at 1,542× California’s Public Health Goal.
• Nearest Superfund site: Shiawassee River, 5.7 miles away.
• Largest share of modeled toxic air from industry: Diamond Chrome Plating Inc (47%), mostly chromium compounds.
• Fine particles (PM2.5) average 6.8 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 48418

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

Based on 5 census tracts · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…