Backflow Prevention Practice Exam

According to ANSI standard, potable water pipe marking requirements are _____ lettering.

1. Blue background with white

2. Green background with yellow

3. White background with blue

4. Green background with white

The correct answer is: Green background with white

Potable water pipe marking requirements according to ANSI standards are established to ensure clear identification of drinking water lines. The correct answer involves a green background with white lettering. This combination is specifically designated for potable water systems, enhancing visibility and understanding for those working with or around these pipes. The green signifies the safety of the water being transported within the pipes, while the white lettering provides a high contrast that is easy to read. This standard is vital in preventing potential cross-connections with non-potable water sources, thus protecting public health. Proper identification through these markings helps maintenance personnel, workers, and emergency responders quickly recognize potable water lines in various environments, ensuring compliance and safety in plumbing and utility management.