What is the purpose of a valve box in the water distribution network?

The purpose of a valve box in the water distribution network is primarily to provide access to valves for operation and maintenance. Valves are crucial components in managing water flow and pressure within the system, and the valve box is designed to protect these valves while allowing operators to easily reach them for necessary adjustments or repairs. This access is essential for ensuring that the water distribution system operates efficiently and that any issues can be promptly addressed.

Other options, such as storing excess water or monitoring water quality, do not accurately reflect the role of a valve box. In addition, while preventing the freezing of pipes is important in colder climates, the valve box itself is not specifically designed to serve that purpose; its main function is focused on access and maintenance of the valves.