Ionia County, MI

ZIP 48851

In ZIP 48851, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Portland has 1 contaminant at or over an EPA legal limit; 14 contaminants are above health goals, led by pfos at 5× California’s Public Health Goal.
• Nearest Superfund site: Ionia City Landfill, 2.5 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Ventra Ionia Main LLC (85%), mostly nickel compounds.
• Fine particles (PM2.5) average 7.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 197,812 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 48851

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

Based on 3 census tracts · compiled September 10, 2026 · how each grade works and its sources

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