Otter Tail County, MN

ZIP 56567

In ZIP 56567, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Wadena meets every EPA legal limit; 10 contaminants are above health goals, led by di(2-ethylhexyl) phthalate at 48× California’s Public Health Goal.
• Nearest Superfund site: Perham Arsenic Site, 6.7 miles away.
• Largest share of modeled toxic air from industry: Green Plains Otter Tail LLC (100%), mostly acrolein.
• Fine particles (PM2.5) average 6.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 460,050 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 56567

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

Based on 5 census tracts · compiled September 10, 2026 · how each grade works and its sources

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