Orange County, CA

ZIP 92845

In ZIP 92845, 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., 3.1 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Certified Alloy Products Inc (49%), mostly cobalt.
• Fine particles (PM2.5) average 12.7 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 92845

• Superfund sites nearbyD
• Factories and industrial sitesF
• Oil and gas wellsF
• Parks and nature nearbyD to F
• Air qualityF
• Drinking water qualityD to F
• Pesticide useD
• Neighborhood health statusB
• Past wildfire impactsA to C
• Past flood impactsA
• Noise levelsB to D

Based on 5 census tracts · compiled September 10, 2026 · how each grade works and its sources

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