Salt Lake County, UT

ZIP 84101

In ZIP 84101, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Salt Lake City Water System meets every EPA legal limit; 12 contaminants are above health goals, led by pfos at 2.1× California’s Public Health Goal.
• Nearest Superfund site: Utah Power & Light/american Barrel Co., 0.9 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Kennecott Utah Copper Smelter & Refinery (50%), mostly arsenic compounds.
• Fine particles (PM2.5) average 7.9 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 84101

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

Based on 6 census tracts · compiled October 25, 2026 · how each grade works and its sources

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