Pima County, AZ

ZIP 85757

In ZIP 85757, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Metropolitan Dwid - Diablo Village meets every EPA legal limit; 5 contaminants are above health goals, led by lithium at 5.3× the USGS health-based screening level.
• Nearest Superfund site: Tucson International Airport Area, 7.6 miles away.
• Largest share of modeled toxic air from industry: Swan Rd. Asphalt Plant (46%), mostly polycyclic aromatic compounds.
• Fine particles (PM2.5) average 7.2 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 85757

• Superfund sites nearbyA to D
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyA to C
• Air qualityB
• Drinking water qualityC
• Pesticide useB
• Neighborhood health statusA to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsD

Based on 6 census tracts · compiled October 25, 2026 · how each grade works and its sources

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