Bexar County, TX

ZIP 78222

In ZIP 78222, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Oak Hills Wsc meets every EPA legal limit; 7 contaminants are above health goals, led by lithium at 3.3× the USGS health-based screening level.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Calaveras Power Station (43%), mostly chromium compounds.
• Fine particles (PM2.5) average 8.6 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 78222

• Superfund sites nearbyA
• Factories and industrial sitesD to F
• Oil and gas wellsD
• Parks and nature nearbyB to C
• Air qualityB to D
• Drinking water qualityB to C
• Pesticide useB to C
• Neighborhood health statusC to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsA to B

Based on 7 census tracts · compiled October 25, 2026 · how each grade works and its sources

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