Tooele County, UT

ZIP 84074

In ZIP 84074, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: South Rim Water System meets every EPA legal limit; 2 contaminants are above health goals, led by arsenic at 350× California’s Public Health Goal.
• Nearest Superfund site: International Smelting and Refining, 3.6 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Kennecott Utah Copper Smelter & Refinery (52%), mostly chromium compounds.
• Fine particles (PM2.5) average 5.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 10,523 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 84074

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

Based on 15 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…