Which of the following is NOT a key component of a water distribution system?

A water distribution system is designed specifically to deliver potable water to consumers, and its key components include pipes, valves, and storage tanks.

Pipes are the primary means through which water is transported from treatment facilities to consumers. Valves are crucial for controlling flow and pressure within the system, allowing for maintenance and management of the water distribution system. Storage tanks play an essential role in holding water to ensure there’s always a supply available for distribution, even during peak demand times or emergencies.

While sewage systems are important for managing wastewater and ensuring public health, they are not part of the potable water distribution system. Therefore, identifying sewage systems as not a key component aligns correctly with the understanding of water distribution infrastructure.