How is unsafe water indicated in plumbing systems?

Unsafe water in plumbing systems is indicated by a 4" equilateral triangle tag. This specific tagging system is employed to clearly communicate the status of the water supply. The use of a triangular tag serves as a visual warning to plumbing professionals and consumers, alerting them that the water may be contaminated or not safe for consumption.

This method of indication is critical for ensuring public health and safety, as it provides a standardized way to signal the potential hazards associated with the water supply, allowing for appropriate actions to be taken to address the issue.

Other tagging systems, such as red or yellow tags, might be used for different purposes within plumbing or maintenance, but the equilateral triangle specifically denotes unsafe water, making it unique and significant in relation to water safety assessments.