Johnson County, KS

ZIP 66226

In ZIP 66226, 6 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.
• Nearest Superfund site: Doepke Disposal (holliday), 2.6 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Harcros Chemicals Inc (79%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 49,881 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 66226

• Superfund sites nearbyD
• Factories and industrial sitesF
• Oil and gas wellsD
• Parks and nature nearbyB to C
• Air qualityB to C
• Drinking water qualityC
• Pesticide useC to D
• Neighborhood health statusA to B
• Past wildfire impactsA
• Past flood impactsB
• Noise levelsA to D
• Radiation signalsF

Based on 7 census tracts · compiled October 25, 2026 · how each grade works and its sources

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