Pima County, AZ

ZIP 85749

In ZIP 85749, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Mt Lemmon Dwid meets every EPA legal limit; 8 contaminants are above health goals, led by bromodichloromethane at 139× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Caid Industries A Div Of Samuel Son & Co. (USA) (45%), mostly chromium.
• Fine particles (PM2.5) average 7.8 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 85749

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

Based on 7 census tracts · compiled October 25, 2026 · how each grade works and its sources

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