Imperial County, CA

ZIP 92249

In ZIP 92249, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Heber Public Utility District meets every EPA legal limit; 9 contaminants are above health goals, led by lithium at 5.9× the USGS health-based screening level.
• Nearest Superfund site: Stoker Chemical, 7.7 miles away.
• Largest share of modeled toxic air from industry: Spreckels Sugar Co Inc. (65%), mostly ammonia.
• Fine particles (PM2.5) average 9.9 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 92249

• Superfund sites nearbyA to C
• Factories and industrial sitesC to D
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityD to F
• Drinking water qualityC
• Pesticide useF
• Neighborhood health statusA to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsB

Based on 4 census tracts · compiled October 25, 2026 · how each grade works and its sources

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