Pima County, AZ

ZIP 85743

In ZIP 85743, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Marana Municipal - Airline Lambert meets every EPA legal limit; 7 contaminants are above health goals, led by lead at 144× California’s Public Health Goal.
• Closer to Superfund sites than 53% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Johns Manville (89%), mostly chromium.
• Fine particles (PM2.5) average 8.2 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 85743

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

Based on 13 census tracts · compiled September 10, 2026 · how each grade works and its sources

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