Maricopa County, AZ

ZIP 85343

In ZIP 85343, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Triple G Dairy meets every EPA legal limit; 2 contaminants are above health goals, led by arsenic at 263× 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 85343

• Superfund sites nearbyD
• Factories and industrial sitesB
• Oil and gas wellsB
• Parks and nature nearbyB
• Air qualityA
• Drinking water qualityB to C
• Pesticide useD
• Neighborhood health statusC
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsD

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

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