Cameron County, TX

ZIP 78578

In ZIP 78578, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: East Rio Hondo Wsc has 2 contaminants at or over an EPA legal limit; 23 contaminants are above health goals, led by pfos at 5.1× 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: Bluewing One LLC (82%), mostly benzene.
• Fine particles (PM2.5) average 9.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 257,100 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 78578

• Superfund sites nearbyA
• Factories and industrial sitesB
• Oil and gas wellsC to D
• Parks and nature nearbyB to D
• Air qualityD to F
• Drinking water qualityD to F
• Pesticide useD to F
• Neighborhood health statusC to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to B
• Radiation signalsC

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

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