Drinking water supply and sanitation in the United States in White Pine County, north of the city straddling the Utah border and other areas, pumping it to Las Vegas through a US$2 billion pipeline. Phoenix draws about half of its drinking water from the Salt River–Verde River watershed, and about 40% from the Colorado River further downstream at Lake Havasu through the Central Arizona Project. Los Angeles obtains about half of its drinking water from the Owens River and Mono Lake through the Los Angeles Aqueduct, with additional supplies from Lake Havasu through the Colorado River Aqueduct. San Diego imports nearly 90 percent of its water from other areas,
Transportation in Salt Lake City County and passes the Salt Lake City International Airport before merging with I-15 west of downtown. The merge continues south for about before I-80 splits east again. It passes through largely residential areas through northern South Salt Lake and the Sugar House neighborhood of Salt Lake City before entering Parley's Canyon, passing through Summit County, and leaving the state on its northeast corner. Interstate 215, known as the "Belt Route", forms a 270° loop around Salt Lake City and its first-ring suburbs. It enters the Rose Park neighborhood in northwestern Salt Lake City from Davis County (where it recently split