Washtenaw County, MI

ZIP 48167

In ZIP 48167, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: South Lyon, City Of meets every EPA legal limit; 6 contaminants are above health goals, led by tthm at 42× Peer-Reviewed Research.
• Nearest Superfund site: Rasmussen's Dump, 9.6 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Michigan Seamless Tube LLC (18%), mostly chromium compounds.
• Fine particles (PM2.5) average 8.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 123,801 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 48167

• Superfund sites nearbyA to C
• Factories and industrial sitesB to C
• Oil and gas wellsC to D
• Parks and nature nearbyB to C
• Air qualityC to F
• Drinking water qualityA to B
• Pesticide useA to D
• Neighborhood health statusA to C
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to C
• Radiation signalsC to D

Based on 14 census tracts · compiled October 25, 2026 · how each grade works and its sources

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