What is another term for large mains in a water distribution system?

In a water distribution system, large mains are referred to as primary feeders. These are the primary pipelines that transport water from the water treatment facility or source to various distribution points within the system. Primary feeders play a crucial role in maintaining water pressure and ensuring that an adequate flow of water is available for firefighting, domestic use, and other needs.

The distinction between primary feeders and other components of the water distribution system, such as secondary feeders, distribution mains, and service lines, is important for understanding the hierarchy and functionality of water infrastructure. Secondary feeders are smaller lines that branch off from primary feeders to supply water to different areas, while distribution mains encompass all types of pipes that distribute water throughout the system. Service lines are the final connections that deliver water from the distribution mains to individual consumers. Understanding these terms helps in identifying the system's layout and operation, particularly during emergencies like firefighting.