Con Edison Gas Operations LDP Practice Test

Which color line is associated with water utilities?

Red Green Purple Blue

Correct Answer:

Blue

Explanation:

Color coding underground utilities helps crews identify what’s buried and prevent damage. Water systems are shown with blue lines, signaling potable water so workers don’t dig into or contaminate mains. This convention distinguishes water from other services: electric power lines are typically red, sewer or drainage lines are green, and purple is used for reclaimed water or irrigation in some schemes. So blue is the color line associated with water utilities.

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