Maricopa County, AZ

ZIP 85339

In ZIP 85339, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Copper Mountain Ranch Cfd has 1 contaminant at or over an EPA legal limit; 9 contaminants are above health goals, led by lead at 31× California’s Public Health Goal.
• Nearest Superfund site: Nineteenth Avenue Landfill, 5.3 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Cornellcookson (50%), mostly chromium compounds.
• Fine particles (PM2.5) average 9.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 812,658 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 85339

• Superfund sites nearbyA to D
• Factories and industrial sitesB to F
• Oil and gas wellsA to B
• Parks and nature nearbyB to D
• Air qualityC to F
• Drinking water qualityD to F
• Pesticide useC to F
• Neighborhood health statusB to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsD

Based on 15 census tracts · compiled September 10, 2026 · how each grade works and its sources

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