Ventura County, CA

ZIP 93004

In ZIP 93004, 10 of the 12 things we check have at least one part graded D or F.

• Drinking water: United Wtr Cons Dist meets every EPA legal limit; 15 contaminants are above health goals, led by pfos at 2.8× California’s Public Health Goal.
• Nearest Superfund site: Halaco Engineering Company, 8.5 miles away.
• Largest share of modeled toxic air from industry: U.S. Navy Nbvc Naval Air Station Point Mugu (35%), mostly naphthalene.
• Fine particles (PM2.5) average 9.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 2,496,015 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 93004

• Superfund sites nearbyA
• Factories and industrial sitesC to D
• Oil and gas wellsF
• Parks and nature nearbyC to F
• Air qualityB to F
• Drinking water qualityD to F
• Pesticide useF
• Neighborhood health statusB to D
• Past wildfire impactsD to F
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsC to D

Based on 8 census tracts · compiled September 10, 2026 · how each grade works and its sources

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