Cross-Connection Specialist — a certified specialist responsible for managing a cross-connection control program.

• A. Backflow Assembly Tester (BAT)
• B. Water Purveyor
• C. University of Southern California (USC)
• D. Cross-Connection Specialist (CCS)

Answer: (D)

Understanding who is responsible for managing a cross-connection control program is the key idea. A Cross-Connection Specialist is the certified professional whose duties center on developing, implementing, and overseeing the cross-connection control program, coordinating surveys, tracking backflow prevention devices, ensuring regulatory compliance, and protecting public health by preventing backflow events. This role is specifically about managing the program as a whole, not just performing tests or providing water service. A Backflow Assembly Tester focuses on testing individual backflow devices, but doesn’t oversee the entire program. A Water Purveyor refers to the utility that supplies water, not a certification title or program manager. The University of Southern California is unrelated to this certification or the program role.