Navajo County, AZ

ZIP 86047

In ZIP 86047, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Blue Ridge Dwid meets every EPA legal limit; 1 contaminant is above health goals, led by lead at 650× 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: Cholla Power Plant (100%), mostly chromium compounds.
• Fine particles (PM2.5) average 4.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 69,587 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 86047

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

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

Loading the full report, with every source…