Orange County, CA
ZIP 92688
In ZIP 92688, 7 of the 12 things we check have at least one part graded D or F.
- Drinking water: Santa Margarita Water District meets every EPA legal limit; 8 contaminants are above health goals, led by lithium at 4.2× the USGS health-based screening level.
- Nearest Superfund site: El Toro Marine Corps Air Station, 7.6 miles away.
- Largest share of modeled toxic air from industry: Acra Aerospace (27%), mostly chromium.
- Fine particles (PM2.5) average 9.0 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 92688
- Superfund sites nearbyC to D
- Factories and industrial sitesC to D
- Oil and gas wellsA to C
- Parks and nature nearbyA to B
- Air qualityD to F
- Drinking water qualityC
- Pesticide useB to D
- Neighborhood health statusA to B
- Past wildfire impactsD to F
- Past flood impactsA
- Noise levelsA to D
- Radiation signalsC to D
Based on 10 census tracts · compiled October 25, 2026 · how each grade works and its sources
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