Which factor should not be considered when placing a backflow prevention device?

Placing a backflow prevention device is a critical aspect of plumbing design, and various factors must be considered to ensure its proper functionality. Among these, the proximity to a water source is not a primary concern when determining the placement of a backflow prevention device.

The main purpose of a backflow prevention device is to prevent the reverse flow of contaminated water into the potable water supply. In this context, the focus should be on factors such as the need to prevent high pressure drops, which could affect system performance. Additionally, ensuring that there is no debris obstructing the check valves is crucial, as any blockage could render the device ineffective. Furthermore, the capability to handle high relief discharge rates is also significant, as it ensures that the device can manage the flow during backflow conditions without failure.

Considering these factors helps maintain water quality and system reliability in plumbing designs. Therefore, while proximity to a water source may influence other aspects of plumbing layout, it is not a determining factor when placing a backflow prevention device.