What is a significant advantage of using a CCTV system in sewer maintenance?

The choice highlighting the ability to record infiltration water flow in action stands out as a significant advantage of using a CCTV system in sewer maintenance. This technology allows maintenance personnel to visually inspect pipelines by capturing real-time video footage of the inside of sewage lines. By using CCTV, operators can identify issues such as infiltration points where groundwater enters the sewer system, which is crucial for both maintenance planning and environmental protection.

This documentation of water flow also aids in assessing the condition of the sewer infrastructure, helping to determine the need for repairs or rehabilitation. Using this method allows for a non-invasive inspection, making it safer and more efficient compared to traditional inspection methods.

In contrast, other options like replacing pipes, controlling sewage odors, or injecting cleaning agents are functions not directly associated with the primary advantages of a CCTV system. While CCTV may inform decisions regarding pipe replacement, it does not execute the replacement itself. Similarly, controlling odors and injecting cleaning agents are maintenance processes that may be informed by CCTV inspections but are not the direct capabilities of the system. The focus on real-time recording of infiltration underscores the essential role of CCTV in effective sewer maintenance and management.