What is the operator responsible control (ORC) requirement during operation?

The requirement for the operator responsible for control (ORC) during operation is a critical aspect of water system management, ensuring that safe and efficient practices are consistently maintained. The correct answer indicates that the operator must be on site 20% of the time. This requirement is typically based on the operational needs of the facility and is designed to ensure that there is a qualified individual available to monitor, manage, and respond to any situation that may arise during the water treatment process.

Having the ORC on site at this specified percentage of time supports effective oversight of operations, allowing for timely adjustments to processes and ensuring compliance with regulatory standards. It is part of a broader framework to protect public health and the environment by ensuring that operations are conducted safely and according to established guidelines.

This required presence also helps in conducting routine maintenance, troubleshooting issues, and implementing emergency response procedures, demonstrating the importance of having a qualified operator actively engaged in day-to-day operations.