Leavenworth County, KS

ZIP 66086

In ZIP 66086, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Kansas City Board Of Public Utilities meets every EPA legal limit; 12 contaminants are above health goals, led by lithium at 5.3× the USGS health-based screening level.
• Closer to Superfund sites than 55% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Harcros Chemicals Inc (78%), mostly ethylene oxide.
• Fine particles (PM2.5) average 6.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 68,272 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 66086

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

Based on 6 census tracts · compiled October 25, 2026 · how each grade works and its sources

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