San Bernardino County, CA

ZIP 92327

In ZIP 92327, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Golden State Water Co - Barstow meets every EPA legal limit; 18 contaminants are above health goals, led by lead at 35× California’s Public Health Goal.
• Closer to Superfund sites than 94% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Cemex Construction Materials Pacific LLC (52%), mostly chromium.
• Fine particles (PM2.5) average 7.3 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 92327

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

Based on 3 census tracts · compiled September 10, 2026 · how each grade works and its sources

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