La Paz County, AZ

ZIP 85334

In ZIP 85334, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Cibola Water Improvement District has 1 contaminant at or over an EPA legal limit; 2 contaminants are above health goals, led by arsenic at 488× 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: US Army Garrison Yuma Proving Ground (99%), mostly nitroglycerin.
• Fine particles (PM2.5) average 5.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 275,415 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 85334

• Superfund sites nearbyA
• Factories and industrial sitesA to C
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityA
• Drinking water qualityA to D
• Pesticide useF
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsF

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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