Mason County, MI

ZIP 49405

In ZIP 49405, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Ludington meets every EPA legal limit; 5 contaminants are above health goals, led by pfos at 2.4× California’s Public Health Goal.
• Nearest Superfund site: Packaging Corp. of America, 9.9 miles away.
• Largest share of modeled toxic air from industry: Packaging Corp Of America (96%), mostly benzene.
• Fine particles (PM2.5) average 5.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 137,842 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 49405

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

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

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