Maricopa County, AZ

ZIP 85256

In ZIP 85256, 6 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, 8.2 miles away.
• Largest share of modeled toxic air from industry: Kloeckner Metals Corp (59%), mostly chromium.
• 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 85256

• Superfund sites nearbyD
• Factories and industrial sitesC
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityD
• Drinking water qualityD to F
• Pesticide useF
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsB
• Radiation signalsD

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…