Blue Earth County, MN

ZIP 56001

In ZIP 56001, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: North Mankato meets every EPA legal limit; 10 contaminants are above health goals, led by lithium at 3.4× the USGS health-based screening level.
• Nearest Superfund site: Lehillier/mankato, 1.8 miles away.
• Largest share of modeled toxic air from industry: Tbei - Truck Bodies & Equipment International (Lake Crystal) (97%), mostly chromium.
• Fine particles (PM2.5) average 7.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 311,953 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 56001

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

Based on 14 census tracts · compiled October 25, 2026 · how each grade works and its sources

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