What is the primary reason for using a liner in a Sanitary Landfill?

The primary reason for using a liner in a sanitary landfill is to prevent groundwater contamination. Liners are critical components designed to create a barrier between the waste materials contained within the landfill and the surrounding environment, particularly the soil and groundwater. By preventing leachate, which is a liquid that results from the decomposition of waste, from escaping into the groundwater, liners help protect water quality and human health. This is especially important because groundwater is a vital resource for drinking water and agricultural use.

While managing leachate is also an essential aspect of landfill operations, it is a separate but related concern. The liner's primary function is to contain the waste and prevent any harmful substances from migrating into the groundwater system. Thus, it serves as a fundamental safeguard against environmental pollution caused by landfill operations.