St. Louis city, MO

ZIP 63103

In ZIP 63103, 9 of the 12 things we check have at least one part graded D or F.

• Drinking water: St Louis City Pws meets every EPA legal limit; 15 contaminants are above health goals, led by pfoa at 171× California’s Public Health Goal.
• Nearest Superfund site: Sauget Area 2, 3.5 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Veolia N.A. Inc. (19%), mostly chloroform.
• Fine particles (PM2.5) average 9.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.

Grades for ZIP 63103

• Superfund sites nearbyF
• Factories and industrial sitesF
• Oil and gas wellsD
• Parks and nature nearbyD to F
• Air qualityF
• Drinking water qualityD
• Neighborhood health statusA to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsB to D
• Radiation signalsC to D

Based on 7 census tracts · compiled September 10, 2026 · how each grade works and its sources

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