Orange County, CA

ZIP 92807

In ZIP 92807, 9 of the 12 things we check have at least one part graded D or F.

• Drinking water: Serrano Water District has 2 contaminants at or over an EPA legal limit; 13 contaminants are above health goals, led by lithium at 2.2× the USGS health-based screening level.
• Nearest Superfund site: Orange County North Basin, 3.9 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Sterigenics-Ontario Facility (19%), mostly chromium.
• Fine particles (PM2.5) average 13.3 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 92807

• Superfund sites nearbyC to F
• Factories and industrial sitesD to F
• Oil and gas wellsF
• Parks and nature nearbyA to C
• Air qualityF
• Drinking water qualityC to F
• Pesticide useB to D
• Neighborhood health statusA to B
• Past wildfire impactsD to F
• Past flood impactsA to C
• Noise levelsA to D
• Radiation signalsC to D

Based on 16 census tracts · compiled October 25, 2026 · how each grade works and its sources

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