Aransas County, TX

ZIP 77950

In ZIP 77950, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Town Of Bayside meets every EPA legal limit; 6 contaminants are above health goals, led by lead at 32× California’s Public Health Goal.
• Closer to Superfund sites than 54% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Union Carbide Corp Seadrift Plant (42%), mostly ethylene oxide.
• Fine particles (PM2.5) average 6.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 116,896 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 77950

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

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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