Nicollet County, MN

ZIP 56074

In ZIP 56074, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Lafayette meets every EPA legal limit; 11 contaminants are above health goals, led by arsenic at 317× California’s Public Health Goal.
• Nearest Superfund site: Lehillier/mankato, 8.4 miles away.
• Largest share of modeled toxic air from industry: Tbei - Truck Bodies & Equipment International (Lake Crystal) (96%), mostly chromium.
• Fine particles (PM2.5) average 6.5 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 196,301 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 56074

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

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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