Hidalgo County, TX

ZIP 78565

In ZIP 78565, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Agua Sud meets every EPA legal limit; 11 contaminants are above health goals, led by lithium at 4.8× the USGS health-based screening level.
• 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: Ge Engine Services Mcallen LP (100%), mostly cobalt.
• Fine particles (PM2.5) average 8.8 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 78565

• Superfund sites nearbyA
• Factories and industrial sitesB
• Oil and gas wellsF
• Parks and nature nearbyC
• Air qualityF
• Drinking water qualityC
• Pesticide useD
• Neighborhood health statusD
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA

Based on 1 census tract · compiled October 25, 2026 · how each grade works and its sources

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