Cass County, NE

ZIP 68366

In ZIP 68366, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Greenwood, Village Of meets every EPA legal limit; 4 contaminants are above health goals, led by arsenic at 603× California’s Public Health Goal.
• Nearest Superfund site: Nebraska Ordnance Plant (former), 9.7 miles away.
• Largest share of modeled toxic air from industry: Tri-Con Industries Ltd (31%), mostly nickel compounds.
• Fine particles (PM2.5) average 6.5 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 360,420 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 68366

• Superfund sites nearbyA to C
• Factories and industrial sitesC to D
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityA
• Drinking water qualityA to F
• Pesticide useF
• Neighborhood health statusA to C
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsF

Based on 3 census tracts · compiled October 25, 2026 · how each grade works and its sources

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