What color is the piping for alternate water sources supposed to be?

The color coding of piping for alternate water sources is a critical aspect of plumbing and water resource management. In this context, purple is designated for non-potable water systems, which includes reclaimed or recycled water. This specific color helps prevent confusion with potable water systems, which are typically marked differently, thereby reducing the risk of cross-connection that could lead to contamination of drinking water supplies.

The use of purple piping for alternate water sources is standardized in many jurisdictions, making it easier for contractors, plumbers, and even the general public to identify and distinguish between different types of water systems quickly. This practice reinforces safety and promotes awareness about the proper handling and use of non-potable water.

Other colors such as white, blue, and yellow are associated with different systems; for instance, blue commonly denotes potable water, yellow is often used for gas lines, and white can refer to various forms of drainage systems. Each color has its purpose, and using purple specifically for non-potable systems plays a crucial role in maintaining safe plumbing practices across the board.