To safeguard against groundwater contamination, sanitary landfills are lines with plastic and clay.
Sanitary landfills are such sites where we dump waste yet the waste here is isolated from the environment until it becomes safe. These landfills are considered when the waste has completely degraded chemically, biologically, and physically. This isolation is better achieved in high-income countries.
A sanitary landfill has four important components to secure it- a bottom liner, a groundwater collection system, a cover, and the natural hydrogeologic setting. The natural setting can be chosen in order to minimize the possibility of wastes escaping to groundwater below the landfill.
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