Oceana County, MI

ZIP 49420

In ZIP 49420, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Pentwater meets every EPA legal limit; 4 contaminants are above health goals, led by lead at 34× California’s Public Health Goal.
• Closer to Superfund sites than 54% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Howmet Corp - Plants 1& 3 (69%), mostly cobalt.
• Fine particles (PM2.5) average 5.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 359,087 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 49420

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

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

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