Arizona Plumbing Practice Exam

What color is typically used for excavator markings in plumbing?

1. Red

2. Blue

3. White

4. Green

The correct answer is: White

In plumbing, excavator markings typically use white paint or flags to indicate proposed excavation areas. This color helps communicate to workers and others involved that digging or excavation work is planned, ensuring that they can take precautions against hitting existing underground utilities. White markings are essential in contributing to safety protocols by providing visual warnings about excavation sites, allowing for proper planning and risk management in construction and plumbing projects. While other colors, such as red or blue, are commonly associated with specific types of utilities—like red for electric lines and blue for potable water—white is the designated color for marking out the area where excavations are intended. This distinction is important for regulating safe practices within the industry and minimizing hazards during excavation work.