Pima County, AZ

ZIP 85746

In ZIP 85746, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Summit Water Coop meets every EPA legal limit; 3 contaminants are above health goals, led by lead at 34× California’s Public Health Goal.
• Nearest Superfund site: Tucson International Airport Area, 6.5 miles away.
• Largest share of modeled toxic air from industry: Caid Industries A Div Of Samuel Son & Co. (USA) (53%), mostly chromium.
• Fine particles (PM2.5) average 8.3 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 85746

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

Based on 14 census tracts · compiled September 10, 2026 · how each grade works and its sources

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