What color is used to mark reclaimed water infrastructure?

• A. Blue
• B. Purple
• C. Green
• D. Orange

Answer: (B)

The color purple is designated for marking reclaimed water infrastructure. This standardization helps ensure that reclaimed water, which is treated wastewater used for various purposes such as irrigation or industrial processes, is easily identifiable and differentiated from potable (drinkable) water supply systems. Using purple for reclaimed water helps prevent cross-connections, which could lead to contamination of drinking water sources and enhances public safety by making sure that everyone, from utility workers to the general public, can recognize and respect the purpose of the infrastructure. This color coding is part of broader color-coding systems used for various types of piping to convey specific meanings about the contents they carry, ensuring safe practices in construction and maintenance activities.