Maricopa County, AZ

ZIP 85322

In ZIP 85322, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Belmont Mountain Dairy meets every EPA legal limit; 3 contaminants are above health goals, led by arsenic at 2,375× California’s Public Health Goal.
• Nearest Superfund site: Hassayampa Landfill, 3.6 miles away.
• Largest share of modeled toxic air from industry: Cornellcookson (94%), mostly chromium.
• Fine particles (PM2.5) average 6.5 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 85322

• Superfund sites nearbyC to D
• Factories and industrial sitesA to B
• Oil and gas wellsA to B
• Parks and nature nearbyB
• Air qualityA
• Drinking water qualityB to C
• Pesticide useC to D
• Neighborhood health statusC to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsD

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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