Bexar County, TX
ZIP 78023
In ZIP 78023, 6 of the 12 things we check have at least one part graded D or F.
- Drinking water: Summit Ridge meets every EPA legal limit; 7 contaminants are above health goals, led by bromodichloromethane at 286× California’s Public Health Goal.
- Nearest Superfund site: Bandera Road Ground Water Plume, 5.9 miles away.
- Largest share of modeled toxic air from industry: Arvin Sango (59%), mostly chromium.
- Fine particles (PM2.5) average 8.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
- About 154,767 kg of agricultural pesticides are applied in the county each year.
Grades for ZIP 78023
- Superfund sites nearbyA to D
- Factories and industrial sitesA to B
- Oil and gas wellsA
- Parks and nature nearbyB to D
- Air qualityB to D
- Drinking water qualityC to D
- Pesticide useB to F
- Neighborhood health statusB to D
- Past wildfire impactsA
- Past flood impactsA to C
- Noise levelsA to C
- Radiation signalsB to C
Based on 9 census tracts · compiled September 10, 2026 · how each grade works and its sources
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