Call 811 Utilities

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.
 

Colorado Utility Contractor Utilities | 811 Electric Utility Color Code

Colorado Utility Contractor Utilities | 811 Electric Utility Color Code

Red: electric power lines, cables, conduit, and lighting cables.

Colorado Utility Contractor Utilities | 811 Communications Utility Color Code

Colorado Utility Contractor Utilities | 811 Communications Utility Color Code

Orange: telecommunication, alarm or signal lines, cables, or conduit.

Colorado Utility Contractor Utilities | 811 Gas Oil Steam Utility Color Code

Colorado Utility Contractor Utilities | 811 Gas Oil Steam Utility Color Code

Yellow: natural gas, oil, steam, petroleum, or other gaseous or flammable material.

Colorado Utility Contractor Utilities | 811 Sewer Drainage Utility Color Code

Colorado Utility Contractor Utilities | 811 Sewer Drainage Utility Color Code

Green: sewers and drain lines.

Colorado Utility Contractor Utilities | 811 Potable Water Utility Color Code

Colorado Utility Contractor Utilities | 811 Potable Water Utility Color Code

Blue: drinking water.

Colorado Utility Contractor Utilities | 811 Reclaimed Water Utility Color Code

Colorado Utility Contractor Utilities | 811 Reclaimed Water Utility Color Code

Purple: reclaimed water, irrigation, and slurry lines.