Waste Management 

WM, previously known as Waste Management, ranks as the largest integrated provider of traditional solid waste services in the United States, operating 257 active landfill sites and about 342 transfer stations that help with transporting waste efficiently and economically. The company serves residential, commercial, industrial, and medical end markets for waste collection, transfer, and disposal. The company also has an energy business emanating from the beneficial use of landfill gas and is a leading recycler in North America.