San Bernardino County, CA

ZIP 92408

In ZIP 92408, 9 of the 12 things we check have at least one part graded D or F.

• Drinking water: East Valley Water District has 2 contaminants at or over an EPA legal limit; 21 contaminants are above health goals, led by lead at 45× California’s Public Health Goal.
• Nearest Superfund site: Norton Air Force Base (lndfll #2), 0.0 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Sterigenics-Ontario Facility (78%), mostly ethylene oxide.
• Fine particles (PM2.5) average 12.1 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 92408

• Superfund sites nearbyF
• Factories and industrial sitesD
• Oil and gas wellsC
• Parks and nature nearbyD to F
• Air qualityF
• Drinking water qualityF
• Pesticide useB to C
• Neighborhood health statusB to F
• Past wildfire impactsC to F
• Past flood impactsC
• Noise levelsB to F
• Radiation signalsD

Based on 9 census tracts · compiled September 10, 2026 · how each grade works and its sources

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