Val Verde County, TX

ZIP 78840

In ZIP 78840, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Lago Vista Water System meets every EPA legal limit; 10 contaminants are above health goals, led by lead at 79× California’s Public Health Goal.
• 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: US Cbp Del Rio Border Patrol Sector Training Facility Tx1156 (100%), mostly lead.
• Fine particles (PM2.5) average 9.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 18,725 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 78840

• Superfund sites nearbyA
• Factories and industrial sitesA
• Oil and gas wellsA to D
• Parks and nature nearbyB to D
• Air qualityC to F
• Drinking water qualityC to F
• Pesticide useD to F
• Neighborhood health statusA to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsC

Based on 14 census tracts · compiled September 10, 2026 · how each grade works and its sources

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