Monroe County, MI

ZIP 49270

In ZIP 49270, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Monroe South County meets every EPA legal limit; 6 contaminants are above health goals, led by lead at 106× California’s Public Health Goal.
• Nearest Superfund site: Novaco Industries, 0.6 miles away.
• Largest share of modeled toxic air from industry: Ohio Refining Co (48%), mostly cobalt compounds.
• Fine particles (PM2.5) average 7.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 242,446 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 49270

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

Based on 5 census tracts · compiled September 10, 2026 · how each grade works and its sources

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