Clinton County, MI

ZIP 48879

In ZIP 48879, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: St. Johns, City Of has 1 contaminant at or over an EPA legal limit; 9 contaminants are above health goals, led by arsenic at 3,177× 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: Mahle Engine Components USA Inc (98%), mostly chromium compounds.
• Fine particles (PM2.5) average 6.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 246,359 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 48879

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

Based on 12 census tracts · compiled September 10, 2026 · how each grade works and its sources

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