Salt Lake County, UT

ZIP 84109

In ZIP 84109, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Emigration Improvement District has 1 contaminant at or over an EPA legal limit; 10 contaminants are above health goals, led by lead at 33× California’s Public Health Goal.
• Nearest Superfund site: 700 South 1600 East PCE Plume, 2.1 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Kennecott Utah Copper Smelter & Refinery (53%), mostly arsenic compounds.
• Fine particles (PM2.5) average 8.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 11,147 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 84109

• Superfund sites nearbyD to F
• Factories and industrial sitesC to D
• Oil and gas wellsA
• Parks and nature nearbyB to F
• Air qualityA to D
• Drinking water qualityC to F
• Pesticide useB to C
• Neighborhood health statusB to C
• Past wildfire impactsA to D
• Past flood impactsA
• Noise levelsA to C
• Radiation signalsD to F

Based on 13 census tracts · compiled September 10, 2026 · how each grade works and its sources

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