What measurements must be taken when providing potable water on a job site?

The correct answer emphasizes the importance of ensuring that potable water on a job site is stored in a clean and sanitary container with an adequate amount of water. This is a fundamental requirement for maintaining health and safety standards, as contaminated water can lead to serious health risks for workers. By ensuring the container is clean and the water is safe to drink, workers are protected from waterborne illnesses.

The other measurements, while they may have their own relevance in specific contexts, do not directly relate to the fundamental requirements for providing safe drinking water on a job site. For instance, knowing the water temperature may be important in some scenarios, but it does not ensure the potability of the water itself. Similarly, water depth and flow rate are typically more relevant for water management practices rather than for assessing the suitability of water for consumption.