Maricopa County, AZ

ZIP 85373

In ZIP 85373, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Epcor - Sun City West meets every EPA legal limit; 10 contaminants are above health goals, led by lead at 30× California’s Public Health Goal.
• Nearest Superfund site: Luke Air Force Base, 9.8 miles away.
• Largest share of modeled toxic air from industry: Cornellcookson (78%), mostly chromium.
• Fine particles (PM2.5) average 8.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 1,094,686 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 85373

• Superfund sites nearbyA
• Factories and industrial sitesB
• Oil and gas wellsB
• Parks and nature nearbyC to F
• Air qualityD to F
• Drinking water qualityD to F
• Pesticide useC to F
• Neighborhood health statusA to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsC to D

Based on 7 census tracts · compiled September 10, 2026 · how each grade works and its sources

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