Maricopa County, AZ

ZIP 85258

In ZIP 85258, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Tempe City Of has 2 contaminants at or over an EPA legal limit; 24 contaminants are above health goals, led by pfos at 24× California’s Public Health Goal.
• Nearest Superfund site: Indian Bend Wash Area, 7.1 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Kloeckner Metals Corp (59%), mostly chromium.
• Fine particles (PM2.5) average 9.8 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 85258

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

Based on 9 census tracts · compiled September 10, 2026 · how each grade works and its sources

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