重工業
Heavy industry and the resulting pollution of the air, soil, and groundwater has affected the region in several ways. The US Environmental Protection Agency has reported that Tooele-based US Magnesium discharges dangerous toxins and cancerous byproducts. In 2008, the US Government considered listing the area as a Superfund site. Tooele County was listed in 1989 as having the worst air in Utah, according to Federal agencies and environmental groups. The Tooele County Health Department notes that the chemical output of the heavy industry can be particularly dangerous in the winter, because the region's climate and setting create winter inversions, suspending the toxins in the air, and posing "serious health concerns".