What is one of the environmental concerns related to landfilling?

Groundwater contamination is a significant environmental concern related to landfilling because when waste materials are deposited in landfills, they can leach hazardous substances into the surrounding soil and ultimately reach the groundwater. This leachate, which is formed from the decomposition of organic waste, can carry chemicals, heavy metals, and pathogens that pose serious risks to both the environment and human health.

The potential for contamination is heightened if landfills are not properly designed or managed, as they may lack adequate liners or monitoring systems. Contaminated groundwater can migrate to surrounding areas, adversely impacting drinking water sources and local ecosystems. Therefore, addressing groundwater contamination is a critical part of landfill management and environmental protection efforts.

In contrast, while excessive energy production and soil erosion are important environmental issues, they are less directly associated with the operation of landfills compared to the risks posed by groundwater contamination.