Hidalgo County, TX

ZIP 78516

In ZIP 78516, 9 of the 12 things we check have at least one part graded D or F.

• Drinking water: City Of Weslaco has 1 contaminant at or over an EPA legal limit; 13 contaminants are above health goals, led by pfos at 5.3× California’s Public Health Goal.
• Nearest Superfund site: Donna Reservoir and Canal System, 0.9 miles away.
• Largest share of modeled toxic air from industry: Ge Engine Services Mcallen LP (100%), mostly cobalt.
• Fine particles (PM2.5) average 9.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 764,635 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 78516

• Superfund sites nearbyC to F
• Factories and industrial sitesB to F
• Oil and gas wellsD to F
• Parks and nature nearbyC to D
• Air qualityF
• Drinking water qualityC to D
• Pesticide useC to F
• Neighborhood health statusA to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsB

Based on 13 census tracts · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…