This is a list of landfills in the United States. A landfill is a site for the disposal of waste materials by burial and is the oldest form of waste treatment. Historically, landfills have been the most common method of organized waste disposal and remain so in many places around the world. Superfund sites are recognized by the government as being contaminated with hazardous substances as well as broadly defined "pollutants or contaminants" and in need of cleanup.