In sewer maintenance, what is a pig?

The term "pig" in the context of sewer maintenance refers to a ball that is used to clean or maintain sewer lines. These pigs are typically made of rubber or some other flexible material and are pushed through the pipeline using water or air pressure. As the pig moves along the sewer line, it scrapes the walls and helps remove debris, buildup, and blockages, thereby improving the flow of wastewater and maintaining the integrity of the infrastructure.

This method is commonly used because it is effective at cleaning without the need for mechanical equipment that could damage the pipes. Using pigs for maintenance ensures that sewer lines are kept clear, which is crucial in preventing overflows and ensuring the proper functioning of the sewage system. Understanding the role of pigs is important for those involved in sewer maintenance, as effective cleaning and maintenance practices are essential for the longevity and efficiency of sewer systems.