Kern County, CA

ZIP 93307

In ZIP 93307, 11 of the 12 things we check have at least one part graded D or F.

• Drinking water: Wini Mutual Water Company has 3 contaminants at or over an EPA legal limit; 11 contaminants are above health goals, led by pfos at 15× California’s Public Health Goal.
• Nearest Superfund site: Brown & Bryant, Inc. (arvin Plant), 1.2 miles away.
• Largest share of modeled toxic air from industry: Kern Energy (82%), mostly benzene.
• Fine particles (PM2.5) average 10.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 9,409,038 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 93307

• Superfund sites nearbyA to F
• Factories and industrial sitesB to F
• Oil and gas wellsD to F
• Parks and nature nearbyB to F
• Air qualityD to F
• Drinking water qualityB to F
• Pesticide useF
• Neighborhood health statusA to F
• Past wildfire impactsA to F
• Past flood impactsA
• Noise levelsA to F
• Radiation signalsC to F

Based on 42 census tracts · compiled October 25, 2026 · how each grade works and its sources

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