Wright County, MN

ZIP 55328

In ZIP 55328, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Rockford meets every EPA legal limit; 6 contaminants are above health goals, led by arsenic at 178× California’s Public Health Goal.
• Nearest Superfund site: Spring Park Municipal Well Field, 7.0 miles away.
• Largest share of modeled toxic air from industry: Minncast Inc (15%), mostly chromium.
• Fine particles (PM2.5) average 6.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 147,966 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 55328

• Superfund sites nearbyA to D
• Factories and industrial sitesA to C
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityB
• Drinking water qualityC
• Pesticide useC to F
• Neighborhood health statusA to C
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsC to D

Based on 5 census tracts · compiled October 25, 2026 · how each grade works and its sources

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