Hidalgo County, TX

ZIP 78579

In ZIP 78579, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: North Alamo Wsc meets every EPA legal limit; 21 contaminants are above health goals, led by lead at 55× California’s Public Health Goal.
• Nearest Superfund site: Donna Reservoir and Canal System, 4.9 miles away.
• Largest share of modeled toxic air from industry: Ge Engine Services Mcallen LP (99%), 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 78579

• Superfund sites nearbyA to C
• Factories and industrial sitesB
• Oil and gas wellsD
• Parks and nature nearbyD
• Air qualityF
• Drinking water qualityD to F
• Pesticide useF
• Neighborhood health statusC to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA

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

Loading the full report, with every source…