Olmsted County, MN

ZIP 55905

In ZIP 55905, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Rochester has 1 contaminant at or over an EPA legal limit; 14 contaminants are above health goals, led by lead at 19× California’s Public Health Goal.
• Nearest Superfund site: Olmsted County Sanitary Landfill, 5.3 miles away.
• Largest share of modeled toxic air from industry: Crenlo Engineered Cabs LLC - Plant 2 (79%), mostly chromium.
• Fine particles (PM2.5) average 7.6 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 55905

• Superfund sites nearbyA
• Factories and industrial sitesC
• Oil and gas wellsA
• Parks and nature nearbyD
• Air qualityC
• Drinking water qualityD
• Pesticide useF
• Neighborhood health statusB
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsD

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

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