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Subsurface Utilities Engineering
Use the 811 utility locate codes below to determine what types of utilities have been located after they have been marked on your job site.
Subsurface Utilities Engineering Utilities | 811 Electric Utility Color Code
Subsurface Utilities Engineering Utilities | 811 Electric Utility Color Code
Red: electric power lines, cables, conduit, and lighting cables.
Subsurface Utilities Engineering Utilities | 811 Communications Utility Color Code
Subsurface Utilities Engineering Utilities | 811 Communications Utility Color Code
Orange: telecommunication, alarm or signal lines, cables, or conduit.
Subsurface Utilities Engineering Utilities | 811 Gas Oil Steam Utility Color Code
Subsurface Utilities Engineering Utilities | 811 Gas Oil Steam Utility Color Code
Yellow: natural gas, oil, steam, petroleum, or other gaseous or flammable material.
Subsurface Utilities Engineering Utilities | 811 Sewer Drainage Utility Color Code
Subsurface Utilities Engineering Utilities | 811 Sewer Drainage Utility Color Code
Green: sewers and drain lines.
Subsurface Utilities Engineering Utilities | 811 Potable Water Utility Color Code
Subsurface Utilities Engineering Utilities | 811 Potable Water Utility Color Code
Blue: drinking water.
Subsurface Utilities Engineering Utilities | 811 Reclaimed Water Utility Color Code
Subsurface Utilities Engineering Utilities | 811 Reclaimed Water Utility Color Code
Purple: reclaimed water, irrigation, and slurry lines.
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