St. Louis County, MN

ZIP 55808

In ZIP 55808, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Proctor meets every EPA legal limit; 6 contaminants are above health goals, led by arsenic at 125× California’s Public Health Goal.
• Nearest Superfund site: St. Louis River Site, 2.2 miles away.
• Largest share of modeled toxic air from industry: Sappi Cloquet LLC (65%), mostly formaldehyde.
• Fine particles (PM2.5) average 6.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 4,289 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 55808

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

Based on 4 census tracts · compiled October 25, 2026 · how each grade works and its sources

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