Bexar County, TX

ZIP 78238

In ZIP 78238, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: San Antonio Water System meets every EPA legal limit; 11 contaminants are above health goals, led by bromodichloromethane at 152× California’s Public Health Goal.
• Nearest Superfund site: Bandera Road Ground Water Plume, 1.2 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Arvin Sango (49%), mostly chromium.
• Fine particles (PM2.5) average 8.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 58,581 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 78238

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

Based on 9 census tracts · compiled October 25, 2026 · how each grade works and its sources

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