San Bernardino County, CA

ZIP 92392

In ZIP 92392, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Sbdno County Service Area 70j meets every EPA legal limit; 6 contaminants are above health goals, led by arsenic at 1,120× California’s Public Health Goal.
• Nearest Superfund site: George Air Force Base, 5.3 miles away.
• Largest share of modeled toxic air from industry: Cemex Construction Materials Pacific LLC (69%), mostly chromium.
• Fine particles (PM2.5) average 8.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 52,223 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 92392

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

Based on 15 census tracts · compiled October 25, 2026 · how each grade works and its sources

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