What color is used to denote Reclaimed Water in the safety color-coding scheme?

• A. Red
• B. Yellow
• C. Blue
• D. Purple

Answer: (D)

Purple is the color used to denote reclaimed water. In safety color-coding, colors help people instantly recognize what kind of water is in use and avoid cross-connections. Reclaimed water has been treated and is reused for non-potable purposes like irrigation or industrial processes, so it’s colored purple to distinguish it from drinking water (blue) and from other systems that use red or yellow for different hazards or services. Purple provides a clear, consistent cue that the water is non-potable and not for drinking, reducing the risk of accidental contamination.