What is NOT required to be included in photographs taken for a Legionella water management plan of decorative fountains?

The correct choice reflects the fact that the equalizing line, while part of a hydraulic system, is not a critical component to document in the context of a Legionella water management plan for decorative fountains. When developing such a plan, the focus is primarily on elements that directly relate to water management, water quality control, and potential points of contamination.

Photographs taken for this purpose typically include the water basin to assess the size and maintenance needs, the piping arrangement to understand how water flows through the system, and overflow outlets to ensure that the fountain’s design prevents stagnant water, which is conducive to Legionella growth.

Including the equalizing line may not provide significant information on the operational or maintenance aspects necessary for managing Legionella risks. Therefore, it is not required in the documentation process aimed at ensuring safe water management for decorative fountains.