Monroe County, MI

ZIP 48131

In ZIP 48131, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Dundee has 1 contaminant at or over an EPA legal limit; 4 contaminants are above health goals, led by pfoa at 1,171× California’s Public Health Goal.
• Nearest Superfund site: Novaco Industries, 7.4 miles away.
• Largest share of modeled toxic air from industry: Ohio Refining Co (49%), mostly cobalt compounds.
• Fine particles (PM2.5) average 7.0 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 48131

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

Based on 6 census tracts · compiled October 25, 2026 · how each grade works and its sources

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