Orange County, CA

ZIP 92841

In ZIP 92841, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: City Of Westminster has 1 contaminant at or over an EPA legal limit; 17 contaminants are above health goals, led by pfos at 4.5× California’s Public Health Goal.
• Nearest Superfund site: Ralph Gray Trucking Co., 2.1 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Certified Alloy Products Inc (52%), mostly cobalt.
• Fine particles (PM2.5) average 11.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 206,209 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 92841

• Superfund sites nearbyD
• Factories and industrial sitesF
• Oil and gas wellsC to F
• Parks and nature nearbyF
• Air qualityF
• Drinking water qualityF
• Pesticide useC to D
• Neighborhood health statusB to C
• Past wildfire impactsC
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsC

Based on 16 census tracts · compiled September 10, 2026 · how each grade works and its sources

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