Johnson County, KS

ZIP 66018

In ZIP 66018, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Desoto, City Of meets every EPA legal limit; 10 contaminants are above health goals, led by lead at 44× California’s Public Health Goal.
• Nearest Superfund site: Chemical Commodities, Inc., 8.7 miles away.
• Largest share of modeled toxic air from industry: Harcros Chemicals Inc (73%), 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 49,881 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 66018

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

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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