Why is it important to document the exercising of all system valves in water distribution systems?

Documenting the exercising of all system valves in water distribution systems is crucial for ensuring operational reliability. Regularly exercising valves helps to prevent them from becoming stuck due to sediment buildup or corrosion. By keeping valves operational, water distribution systems can maintain proper flow and pressure, which is essential during emergencies, maintenance, or system repairs. This proactive approach helps to ensure that valves function as intended when needed, thereby minimizing the risk of system failures and interruptions in service. Proper documentation also provides a clear record of maintenance activities, which can be important for regulatory compliance and for assessing the condition of the infrastructure over time. This comprehensive approach ultimately supports the overall reliability and efficiency of the water distribution system.