Maricopa County, AZ

ZIP 85307

In ZIP 85307, 9 of the 12 things we check have at least one part graded D or F.

• Drinking water: Liberty Water Lpsco has 2 contaminants at or over an EPA legal limit; 13 contaminants are above health goals, led by arsenic at 1,662× California’s Public Health Goal.
• Nearest Superfund site: Luke Air Force Base, 5.5 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Parker Hannifin Corp (50%), mostly 1-bromopropane.
• Fine particles (PM2.5) average 8.4 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 85307

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

Based on 5 census tracts · compiled October 25, 2026 · how each grade works and its sources

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