What is an essential requirement for the installation of non-potable water systems?

The essential requirement for the installation of non-potable water systems being that they must discharge indirectly is crucial for public health and safety. Non-potable water systems are designed to handle water that is not safe for human consumption, such as gray water or reclaimed water. By requiring these systems to discharge indirectly, the risk of contamination to potable water supplies is minimized.

Indirect discharge means that waste or non-potable water is directed to a drain or a treatment system where it cannot backflow or mix with potable water sources. This helps to ensure that there is a clear separation between potable and non-potable systems, which is critical in preventing health risks related to waterborne diseases or contamination.

While being visible to users, having an emergency shutoff, and color-coding are certainly important considerations for safety and awareness, the primary focus for non-potable systems revolves around their design and discharge methods to protect drinking water from contamination.