What feature is essential for monitoring the operation of a water system for safety?

The essential feature for monitoring the operation of a water system for safety is the Automatic Leak Control Valve. This component plays a crucial role in ensuring the integrity of the water system by detecting leaks promptly. When a leak is detected, the valve can automatically shut off the water supply to prevent further water loss and potential damage. This capability not only protects the water system but also prevents contamination and unsafe conditions that might arise from a malfunctioning system.

In contrast, while management of startup procedures, the disinfection process, and pre-filtration systems are critical for the overall operation of a water system, they do not specifically relate to the monitoring aspect of safety in real-time. Startup procedures are primarily about initiating the operations of the system correctly, the disinfection process focuses on ensuring water quality by neutralizing harmful microorganisms, and the pre-filtration system aims to remove larger particles and contaminants before the water undergoes further treatment. However, these features do not inherently provide the same level of continuous monitoring and immediate response that an automatic leak control valve does.