Maricopa County, AZ

ZIP 85298

In ZIP 85298, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Greenfield Ranchettes meets every EPA legal limit; 5 contaminants are above health goals, led by lead at 95× California’s Public Health Goal.
• Nearest Superfund site: Williams Air Force Base, 5.8 miles away.
• Largest share of modeled toxic air from industry: Kloeckner Metals Corp (55%), mostly chromium.
• Fine particles (PM2.5) average 8.3 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 85298

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

Based on 13 census tracts · compiled September 10, 2026 · how each grade works and its sources

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