Johnson County, MO

ZIP 65336

In ZIP 65336, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Johnson County Pwsd 1 meets every EPA legal limit; 8 contaminants are above health goals, led by lithium at 11× the USGS health-based screening level.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Owens Corning Insulating Systems LLC (34%), mostly manganese compounds.
• Fine particles (PM2.5) average 6.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 148,448 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 65336

• Superfund sites nearbyA
• Factories and industrial sitesA to C
• Oil and gas wellsA to B
• Parks and nature nearbyB to D
• Air qualityB
• Drinking water qualityA to C
• Pesticide useD to F
• Neighborhood health statusA to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsC to D

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

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