San Bernardino County, CA

ZIP 92398

In ZIP 92398, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Helendale Community Service District has 2 contaminants at or over an EPA legal limit; 10 contaminants are above health goals, led by pfos at 19× California’s Public Health Goal.
• Nearest Superfund site: Barstow Marine Corps Logistics Base, 9.5 miles away.
• Largest share of modeled toxic air from industry: Cemex Construction Materials Pacific LLC (50%), 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 92398

• 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 qualityB to F
• Pesticide useA to C
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsA to C
• Noise levelsA to D
• Radiation signalsF

Based on 3 census tracts · compiled October 25, 2026 · how each grade works and its sources

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