Pinal County, AZ

ZIP 85142

In ZIP 85142, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Epcor - San Tan has 1 contaminant at or over an EPA legal limit; 13 contaminants are above health goals, led by lead at 23× California’s Public Health Goal.
• Nearest Superfund site: Williams Air Force Base, 3.1 miles away.
• Largest share of modeled toxic air from industry: Zf Passive Safety Systems Inc - Mesa Operations (51%), mostly chromium compounds.
• 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 85142

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

Based on 23 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…