Caribou County, ID

ZIP 83276

In ZIP 83276, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Bear Lake West Poa has 1 contaminant at or over an EPA legal limit; 4 contaminants are above health goals, led by arsenic at 25,500× California’s Public Health Goal.
• Nearest Superfund site: Kerr-Mcgee Chemical Corp. (soda Springs Plant), 5.0 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: P4 Production LLC (100%), mostly chromium compounds.
• Fine particles (PM2.5) average 5.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 346,489 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 83276

• Superfund sites nearbyC to F
• Factories and industrial sitesB to C
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityA
• Drinking water qualityB to F
• Pesticide useF
• Neighborhood health statusC to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsC to D

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

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