The main distribution system performance catagories that are included in the distribution system operator objective are _________

• A. Cost effectiveness and energy use
• B. Water quality and reliability
• C. Public satisfaction and ease of access
• D. Volume and velocity

Answer: (B)

This question tests what performance categories the distribution system operator focuses on. The emphasis is on water quality and reliability because the operator’s primary duty is to deliver safe drinking water and provide a dependable supply to customers. Water quality covers meeting regulatory standards, controlling contaminants, maintaining proper residual disinfectants, and ensuring safe taste and odor. Reliability means maintaining adequate pressure, ensuring continuous service, and keeping the system resilient to outages through good maintenance and redundancy. Those two aspects directly reflect the essential services customers rely on: safe water and a reliable, continuous supply. While cost effectiveness, energy use, public satisfaction, ease of access, and flow characteristics like volume and velocity matter in operations, they are not the fundamental performance categories that define the distribution system operator objective.