What is the primary issue with a dead-end water distribution system?

The primary issue with a dead-end water distribution system is that water does not flow continuously due to dead ends. In such systems, water can become stagnant at the ends of the distribution lines where there are no outlets or further connections for flow. This lack of movement can lead to several problems, including reduced water quality due to the potential for contamination, sediment buildup, and inadequate service during peak demand.

Unlike interconnected systems where water can flow through multiple pathways, a dead-end system relies on flowing in one direction and can result in insufficient pressure and flow rates if not managed properly. Keeping water moving is crucial for maintaining its quality and ensuring adequate delivery to consumers. Since the other options refer to aspects that do not typically apply to dead-end systems, they don't accurately capture the central issue of stagnant water flow.