Comal County, TX

ZIP 78163

In ZIP 78163, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Sjwtx Triple Peak Plant has 1 contaminant at or over an EPA legal limit; 19 contaminants are above health goals, led by pfos at 4.6× California’s Public Health Goal.
• Nearest Superfund site: Eldorado Chemical Co., Inc., 7.1 miles away.
• Largest share of modeled toxic air from industry: Central Texas Iron Works - Schertz (94%), mostly chromium.
• Fine particles (PM2.5) average 6.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 13,106 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 78163

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

Based on 5 census tracts · compiled September 10, 2026 · how each grade works and its sources

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