Butler County, KS

ZIP 66840

In ZIP 66840, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Marion Co Rwd 4 meets every EPA legal limit; 8 contaminants are above health goals, led by lead at 53× California’s Public Health Goal.
• Nearest Superfund site: Pester Refinery Co., 9.8 miles away.
• Largest share of modeled toxic air from industry: 3P Processing LLC (48%), mostly chromium compounds.
• Fine particles (PM2.5) average 6.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 196,070 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 66840

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

Based on 4 census tracts · compiled September 10, 2026 · how each grade works and its sources

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