What are the utility color codes?
As a quick refresh, the APWA color code for utility marking is:
- Red: electric power lines, cables, conduit and lighting cables.
- Orange: telecommunication, alarm or signal lines, cables or conduit.
- Yellow: natural gas, oil, steam, petroleum or other flammable.
- Green: sewers and drain lines.
- Blue: potable drinking water.
What color are underground power lines?
Red
Color Code for Marking Underground Utility Lines
| Red | Electric power lines, cables, conduit, and lighting cables |
|---|---|
| Orange | Telecommunication, alarm or signal lines, cables, or conduit |
| Yellow | Natural gas, oil, steam, petroleum, or other gaseous or flammable material |
| Green | Sewers and drain lines |
| Blue | Drinking water |
What do the colors mean for utilities?
RED – Electric Power Lines, Cables, Conduit and Lighting Cables. YELLOW – Gas, Oil, Steam Petroleum or Gaseous Materials. ORANGE – Communication, Cable TV, Alarm or Signal Lines, Cables or Conduit. BLUE – Water, Irrigation and Slurry Lines. GREEN – Sewers and Drain Lines.
What is the designated color for drainage systems?
Green
| Red | Electric power lines, cables, conduit, and lighting cables |
|---|---|
| Yellow | Natural gas, oil, steam, petroleum, or other gaseous or flammable materials |
| Green | Sanitary sewers and drain lines |
| Orange | Telecommunication, alarm or signal lines, cables, or conduits |
| Blue | Potable water |
What Colour are underground services?
Underground ducting colour codes explained
| Colour | Use |
|---|---|
| Red | High voltage electric cable |
| Yellow | Service and mains gas cable (ducting is perforated to allow for gas venting) |
| Blue | Water pipes installed at least 750mm below surface |
| Green | Broadband, telephone and non-motorway CCTV cables |
How do you read underground utility markings?
What do the Utility Marking Colors Mean
- Before You Dig: Color Coding for Underground Infrastructure.
- Pink indicates temporary survey markings.
- Red is the color for electrical equipment.
- Yellow Means natural gas, petroleum, or steam.
- Orange indicates communications.
What color are utility flags?
Utility Flag Marking Cheatsheet
| Flag Color | Use |
|---|---|
| Red | Electrical utilities like power lines |
| White | Excavation |
| Pink | Temporary survey markings |
| Yellow | Gas lines like petroleum, steam |
What are the utility flag colors?
Utility Flag Marking Cheatsheet
| Flag Color | Use |
|---|---|
| Yellow | Gas lines like petroleum, steam |
| Orange | Communication lines |
| Blue | Water lines |
| Purple | Undrinkable water lines |
What utility is marked pink?
Temporary survey markings
Utility Flag Marking Cheatsheet
| Flag Color | Use |
|---|---|
| Pink | Temporary survey markings |
| Yellow | Gas lines like petroleum, steam |
| Orange | Communication lines |
| Blue | Water lines |
How are underground services marked on site?
Electromagnetic locating It’s most useful for utilities like water, natural gas, fuel lines, electricity and telephone. In order to detect underground services, a traceable current is passed through the service by directly connecting or coupling a cable with a ring clamp.
How do I identify an underground service?
Before work commences, the position of the buried service should be marked on the ground using paint, or similar. Where there is uncertainty about a pipe’s position, particularly plastic pipes, hand-dig trial holes to confirm the location of the service, the type of service, and the condition of the pipe or cable.
What are the color markings for utilities?
Pink is strictly used by land surveying companies to state where the temporary survey markings are. The color codes for locating utilities, conduit or rebar in concrete can present slightly different colors depending on the surface. Most often used are the colors red, yellow, blue and black.
What do the utility marking colors mean?
Utility color codes are used to identify existing underground utilities in construction areas, to protect them from damage during excavation. Colored lines, flags, or both are used to mark the location and denote the type of underground utility.
What is uniform color code system?
UNIFORM COLOR CODE. RED – Electric Power Lines, Cables, Conduit and Lighting Cables YELLOW – Gas, Oil, Steam, Petroleum or Gaseous Materials ORANGE Communication, Alarm or Signal Lines, Cables or Conduit BLUE – Potable Water GREEN – Sewers and Drain Lines PURPLE – Reclaimed Water, Irrigation and Slurry Lines.