St. Louis County, MO
ZIP 63045
In ZIP 63045, 5 of the 12 things we check have at least one part graded D or F.
- Drinking water: Mo American St Louis St Charles Counties meets every EPA legal limit; 10 contaminants are above health goals, led by lithium at 3.8× the USGS health-based screening level.
- Nearest Superfund site: Westlake Landfill, 0.2 miles away (2 within 10 miles).
- Largest share of modeled toxic air from industry: Wood River Refinery (27%), mostly chromium compounds.
- Fine particles (PM2.5) average 8.9 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 63045
- Superfund sites nearbyF
- Factories and industrial sitesD
- Oil and gas wellsA
- Parks and nature nearbyC
- Air qualityF
- Drinking water qualityC
- Pesticide useA
- Neighborhood health statusD
- Past wildfire impactsA
- Past flood impactsA
- Noise levelsD
- Radiation signalsC
Based on 1 census tract · compiled October 25, 2026 · how each grade works and its sources
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