Bexar County, TX

ZIP 78235

In ZIP 78235, 5 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: R & H Oil/tropicana Energy, 5.6 miles away.
• Largest share of modeled toxic air from industry: The San Antonio Refinery LLC (93%), mostly benzene.
• Fine particles (PM2.5) average 8.4 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 78235

• Superfund sites nearbyD
• Factories and industrial sitesF
• Oil and gas wellsD
• Parks and nature nearbyB
• Air qualityD
• Drinking water qualityC
• Pesticide useB
• Neighborhood health statusB
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsD
• Radiation signalsA

Based on 1 census tract · compiled October 25, 2026 · how each grade works and its sources

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