Orange County, CA
ZIP 92677
In ZIP 92677, 7 of the 12 things we check have at least one part graded D or F.
- Drinking water: Santa Margarita Water District-Id9 has 2 contaminants at or over an EPA legal limit; 10 contaminants are above health goals, led by pfoa at 1,114× California’s Public Health Goal.
- Nearest Superfund site: El Toro Marine Corps Air Station, 7.8 miles away.
- Largest share of modeled toxic air from industry: Applied Medical Resources Corp (26%), mostly chromium.
- Fine particles (PM2.5) average 9.3 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 92677
- Superfund sites nearbyA to D
- Factories and industrial sitesC to F
- Oil and gas wellsC to F
- Parks and nature nearbyA to C
- Air qualityD to F
- Drinking water qualityC to F
- Pesticide useB to C
- Neighborhood health statusA to C
- Past wildfire impactsD
- Past flood impactsA
- Noise levelsA to D
Based on 17 census tracts · compiled October 25, 2026 · how each grade works and its sources
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