Hennepin County, MN

ZIP 55431

In ZIP 55431, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Richfield meets every EPA legal limit; 6 contaminants are above health goals, led by lead at 9.1× California’s Public Health Goal.
• Nearest Superfund site: Freeway Sanitary Landfill, 1.3 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: St Paul Park Refining Co LLC (19%), mostly chromium.
• Fine particles (PM2.5) average 8.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 37,606 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 55431

• Superfund sites nearbyD to F
• Factories and industrial sitesD
• Oil and gas wellsA
• Parks and nature nearbyC to F
• Air qualityD
• Drinking water qualityD
• Pesticide useB to D
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to C
• Radiation signalsD

Based on 7 census tracts · compiled September 10, 2026 · how each grade works and its sources

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