A Landfill site is a location that has been prepared for the purpose of dumping waste, rubbish or debris. Modern landfills are well-engineered and well-managed facilities that are disposal sites for solid waste. These sites are placed in designated areas and are actively monitored to comply with federal regulations. One goal of using landfill sites is to prevent potential contaminants from entering the environment.

Municipal Solid Waste Landfills (MSWLFs) are specifically designed to receive household waste, as well as other types of nonhazardous wastes. Bioreactor Landfills are a type of MSWLF that operates to rapidly transform and degrade organic waste.