Pima County, AZ

ZIP 85721

In ZIP 85721, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Tucson City Of meets every EPA legal limit; 7 contaminants are above health goals, led by arsenic at 706× California’s Public Health Goal.
• Nearest Superfund site: Tucson International Airport Area, 7.8 miles away.
• Largest share of modeled toxic air from industry: Caid Industries A Div Of Samuel Son & Co. (USA) (38%), mostly chromium.
• Fine particles (PM2.5) average 7.4 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 85721

• Superfund sites nearbyD
• Factories and industrial sitesC
• Oil and gas wellsC
• Parks and nature nearbyC
• Air qualityC
• Drinking water qualityC
• Pesticide useB
• Neighborhood health statusA
• Past wildfire impactsC
• Past flood impactsA
• Noise levelsD
• Radiation signalsD

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

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