
Underground Utility Color Code
What do the different colored flags mean?

White
Proposed Excavation

Pink
Temporary Survey Markings

Green
Sewer and Drain Lines

Blue
Potable Water

Red
Electrical Power Lines, Cables, Conduit and Lighting Cables

Yellow
Gas, Oil, Steam, Petroleum or Gaseous Materials

Orange
Communications, Alarm or Signal Lines, Cables or Conduit

Purple
Irrigation and Slurry Lines, Reclaimed Water