Orange County, CA

ZIP 92655

In ZIP 92655, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Midway City Mutual Wc meets every EPA legal limit; 7 contaminants are above health goals, led by arsenic at 516× California’s Public Health Goal.
• Nearest Superfund site: Ralph Gray Trucking Co., 0.8 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Certified Alloy Products Inc (58%), 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 92655

• Superfund sites nearbyA to D
• Factories and industrial sitesF
• Oil and gas wellsF
• Parks and nature nearbyC
• Air qualityF
• Drinking water qualityC
• Pesticide useB
• Neighborhood health statusA to C
• Past wildfire impactsC
• Past flood impactsA
• Noise levelsC to D

Based on 4 census tracts · compiled October 25, 2026 · how each grade works and its sources

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