Pinal County, AZ

ZIP 85143

In ZIP 85143, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Epcor - San Tan Anthem has 1 contaminant at or over an EPA legal limit; 6 contaminants are above health goals, led by lead at 45× California’s Public Health Goal.
• Nearest Superfund site: Williams Air Force Base, 9.0 miles away.
• Largest share of modeled toxic air from industry: Kloeckner Metals Corp (65%), mostly chromium.
• Fine particles (PM2.5) average 8.1 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 85143

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

Based on 11 census tracts · compiled September 10, 2026 · how each grade works and its sources

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