Hennepin County, MN

ZIP 55446

In ZIP 55446, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Plymouth meets every EPA legal limit; 14 contaminants are above health goals, led by lead at 15× California’s Public Health Goal.
• Nearest Superfund site: Reilly Tar & Chemical Corp. (st. Louis Park Plant), 6.5 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Buhler Group (16%), mostly chromium.
• Fine particles (PM2.5) average 8.1 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 55446

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

Based on 6 census tracts · compiled September 10, 2026 · how each grade works and its sources

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