Orange County, CA

ZIP 92624

In ZIP 92624, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Smwd - Sj Ground Water Plant has 5 contaminants at or over an EPA legal limit; 18 contaminants are above health goals, led by nitrite at 11× https://pmc.ncbi.nlm.nih.gov/articles/PMC4535738/.
• Closer to Superfund sites than 65% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Steris Inc (30%), mostly ethylene oxide.
• Fine particles (PM2.5) average 9.1 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 92624

• Superfund sites nearbyD
• Factories and industrial sitesB
• Oil and gas wellsC
• Parks and nature nearbyC to D
• Air qualityD to F
• Drinking water qualityC to F
• Pesticide useC to D
• Neighborhood health statusB to C
• Past wildfire impactsC
• Past flood impactsA
• Noise levelsA to D

Based on 3 census tracts · compiled September 10, 2026 · how each grade works and its sources

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