USIC Nicor Practice Test

According to APWA (American Public Works Association) standards, the color assigned to "Sewer" is green. APWA color codes are used for marking underground utilities to help ensure safe excavation practices. Each utility type has a designated color, facilitating easy identification by workers in the field.

Sewers are critical infrastructure, and using green color coding helps to reduce the risk of accidental damage during digging and construction. This coding allows workers to recognize sewer lines quickly and take the necessary precautions, preventing costly repairs and potential safety hazards. The clarity and consistency provided by these standards are essential in promoting safe practices in utility management and construction.