Imperial County, CA

ZIP 92257

In ZIP 92257, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Mitchells Camp Family Assoc. has 3 contaminants at or over an EPA legal limit; 6 contaminants are above health goals, led by pfos at 8.5× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: US Army Garrison Yuma Proving Ground (56%), mostly nitroglycerin.
• Fine particles (PM2.5) average 8.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 2,702,670 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 92257

• Superfund sites nearbyA
• Factories and industrial sitesA to C
• Oil and gas wellsA to C
• Parks and nature nearbyA to C
• Air qualityA to F
• Drinking water qualityC to F
• Pesticide useF
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsD

Based on 3 census tracts · compiled October 25, 2026 · how each grade works and its sources

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