Olmsted County, MN

ZIP 55934

In ZIP 55934, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Saint Charles has 1 contaminant at or over an EPA legal limit; 9 contaminants are above health goals, led by arsenic at 125× California’s Public Health Goal.
• Nearest Superfund site: Olmsted County Sanitary Landfill, 7.8 miles away.
• Largest share of modeled toxic air from industry: Crenlo Engineered Cabs LLC - Plant 2 (69%), mostly chromium.
• Fine particles (PM2.5) average 7.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 214,333 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 55934

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

Based on 4 census tracts · compiled September 10, 2026 · how each grade works and its sources

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