St. Louis County, MO

ZIP 63126

In ZIP 63126, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Kirkwood Pws meets every EPA legal limit; 8 contaminants are above health goals, led by lead at 146× California’s Public Health Goal.
• Nearest Superfund site: Valley Park TCE, 5.8 miles away.
• Largest share of modeled toxic air from industry: Control Devices (66%), mostly cobalt.
• Fine particles (PM2.5) average 9.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 18,909 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 63126

• Superfund sites nearbyD
• Factories and industrial sitesB to C
• Oil and gas wellsA to C
• Parks and nature nearbyC
• Air qualityF
• Drinking water qualityC to D
• Pesticide useA to B
• Neighborhood health statusA to C
• Past wildfire impactsA
• Past flood impactsC to F
• Noise levelsA to D
• Radiation signalsC

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

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