Which color line indicates sewage?

Which color line indicates sewage?

• A. Yellow
• B. Blue
• C. White
• D. Green

Answer: (D)

Green is used to mark sanitary sewer or wastewater lines in many utility color-coding schemes. This color coding helps workers quickly identify what type of underground line they’re dealing with, reducing the risk of digging into a sewer line or making cross-connections. So when you see green markings or a green-lined pipe, you should treat it as sewage and follow the proper safety and excavation procedures, including verifying the line with utility locates and taking appropriate containment measures. For contrast, other colors are assigned to different systems (for example, yellow often indicates gas and blue indicates potable water), which is why green specifically points to sewage in these codes.

Green is used to mark sanitary sewer or wastewater lines in many utility color-coding schemes. This color coding helps workers quickly identify what type of underground line they’re dealing with, reducing the risk of digging into a sewer line or making cross-connections. So when you see green markings or a green-lined pipe, you should treat it as sewage and follow the proper safety and excavation procedures, including verifying the line with utility locates and taking appropriate containment measures. For contrast, other colors are assigned to different systems (for example, yellow often indicates gas and blue indicates potable water), which is why green specifically points to sewage in these codes.