San Bernardino County, CA

ZIP 92301

In ZIP 92301, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Helendale Community Service District has 4 contaminants at or over an EPA legal limit; 12 contaminants are above health goals, led by lead at 39× California’s Public Health Goal.
• Closer to Superfund sites than 97% 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 (62%), mostly chromium.
• Fine particles (PM2.5) average 8.1 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 92301

• Superfund sites nearbyD to F
• Factories and industrial sitesB to C
• Oil and gas wellsA
• Parks and nature nearbyB to F
• Air qualityB to D
• Drinking water qualityD to F
• Pesticide useB
• Neighborhood health statusB to F
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to B
• Radiation signalsD

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

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