Pima County, AZ

ZIP 85734

In ZIP 85734, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Adoc Tucson meets every EPA legal limit; 4 contaminants are above health goals, led by arsenic at 1,008× California’s Public Health Goal.
• Nearest Superfund site: Tucson International Airport Area, 5.8 miles away.
• Largest share of modeled toxic air from industry: Swan Rd. Asphalt Plant (85%), mostly polycyclic aromatic compounds.
• Fine particles (PM2.5) average 6.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 77,498 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 85734

• Superfund sites nearbyD
• Factories and industrial sitesB
• Oil and gas wellsD
• Parks and nature nearbyC
• Air qualityA
• Drinking water qualityC
• Pesticide useB
• Neighborhood health statusA
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsD

Based on 1 census tract · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…