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: Knoll Enterprises has 2 contaminants at or over an EPA legal limit; 6 contaminants are above health goals, led by arsenic at 7,184× 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 nearbyA to B
- Air qualityA to C
- Drinking water qualityA to F
- Pesticide useB to C
- Neighborhood health statusF
- Past wildfire impactsA
- Past flood impactsA to D
- Noise levelsA to D
- Radiation signalsD to F
Based on 3 census tracts · compiled October 25, 2026 · how each grade works and its sources
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