Orange County, CA

ZIP 92656

In ZIP 92656, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: El Toro Water District meets every EPA legal limit; 12 contaminants are above health goals, led by bromodichloromethane at 161× California’s Public Health Goal.
• Nearest Superfund site: El Toro Marine Corps Air Station, 5.2 miles away.
• Largest share of modeled toxic air from industry: Certified Alloy Products Inc (75%), mostly cobalt.
• Fine particles (PM2.5) average 9.6 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 92656

• Superfund sites nearbyC to D
• Factories and industrial sitesC to D
• Oil and gas wellsC to D
• Parks and nature nearbyC to F
• Air qualityD to F
• Drinking water qualityD
• Pesticide useC to D
• Neighborhood health statusA to B
• Past wildfire impactsD
• Past flood impactsA
• Noise levelsA to C
• Radiation signalsC

Based on 12 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…