What is the role of valves in a water distribution system?

Valves play a critical role in managing the flow of water within a distribution system by allowing operators to control and isolate sections of the network. This control is necessary for various operational needs, such as maintenance, repairs, and during emergencies, allowing for specific areas to be shut off without disrupting the entire system.

For instance, if a pipeline needs repair, valves can be closed to isolate that section, ensuring that the flow of water can be redirected, protecting both the workers and the surrounding infrastructure. This ability to manage flow is essential for maintaining system safety, ensuring consistent service, and optimizing water supply management, particularly during peak usage or shortages.

The other options focus on activities that are not directly related to the primary function of valves. While linking different distribution systems can be a functional requirement, it is not the primary role of valves themselves. Additionally, filtering the water supply involves other equipment, such as filtration systems, and measuring water consumption is typically handled by different instruments, such as water meters, rather than valves.