Bexar County, TX

ZIP 78252

In ZIP 78252, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Pioneer Estates meets every EPA legal limit; 6 contaminants are above health goals, led by lead at 32× California’s Public Health Goal.
• Nearest Superfund site: R & H Oil/tropicana Energy, 7.3 miles away.
• Largest share of modeled toxic air from industry: Arvin Sango (86%), mostly chromium.
• Fine particles (PM2.5) average 8.2 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 78252

• Superfund sites nearbyA to D
• Factories and industrial sitesA to C
• Oil and gas wellsD to F
• Parks and nature nearbyC
• Air qualityB to D
• Drinking water qualityC to F
• Pesticide useD
• Neighborhood health statusB to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsB to C

Based on 6 census tracts · compiled September 10, 2026 · how each grade works and its sources

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