Southwest Gas is engaged in the business of purchasing, transporting and distributing the environmental fuel of choice - natural gas. The Company serves more than 1.9 million customers in Arizona, California and Nevada. Being a distributor of natural gas in Nevada and Arizona, it serves the Las Vegas, Phoenix and Tucson metropolitan areas. In addition, Southwest Gas transports and distributes natural gas as in portions of California, including areas in Lake Tahoe and San Bernardino County.