What is the role of a distribution system in public water supply?

The distribution system plays a crucial role in the public water supply by serving as the infrastructure that delivers treated drinking water from the treatment plant to consumers. This system includes a network of pipes, pumps, valves, and storage facilities that transport water to homes, businesses, and other facilities where it is needed.

Once water has been treated to meet safety and quality standards at the treatment plant, the distribution system ensures that this potable water reaches consumers in a safe, efficient, and reliable manner. This includes maintaining appropriate pressure within the system to ensure adequate flow, as well as preventing contamination during transport.

While other options touch on important aspects of water management and safety, they do not accurately describe the primary function of the distribution system. For instance, treatment of water is conducted at the treatment plant, not within the distribution system itself. Similarly, monitoring water quality and storing water for emergencies are important functions in the overall water management system, but they are not the main roles associated with the distribution infrastructure. Thus, option B accurately captures the essence of what a distribution system is designed to do within the context of public water supply.