Which of the following colors is NOT appropriate for potable water hoses?

Potable water hoses are designated for delivering safe drinking water, and specific colors are typically used to identify them for clear recognition and to prevent contamination. The use of white is commonly associated with hoses used for potable water, as it is widely accepted as the standard color that indicates safety for drinking purposes.

In contrast, orange is typically reserved for hoses related to non-potable water applications, while brown may also indicate non-drinkable fluids. Blue is generally accepted as a color for potable water hoses, although it can vary based on local regulations and practices. Therefore, while white is appropriate for drinking water applications, it is the other colors, particularly orange and brown, that signal potential restrictions on potable use.

This understanding of color coding is crucial in preventing cross-contamination and ensuring safety in water handling processes, especially in scenarios involving both drinking and non-drinking water systems.