Fact Sheet

  • JULIE, Inc. (Joint Utility Locating Information for Excavators), also known as the “Illinois One-Call System,” is a not-for-profit organization that provides professional and non-professional (i.e. homeowners) excavators with a free service to contact for the locating and marking of underground utility facilities. Simply call 8-1-1 or 800-892-0123 or go online for self service options at www.illinois1call.com. Based in Joliet, Illinois, JULIE, Inc. is open 24/7 and has approximately 100 employees during peak seasons.
  • JULIE, Inc. is not a utility and neither owns nor marks any underground facilities. JULIE, Inc. serves as a message handling service for its underground utility facility members, taking information about planned excavations and distributing this information to its membership.  It is then the responsibility of each member utility to mark the location of their underground facilities at the excavation site.  Currently, more than 1,935 members fully support JULIE based upon their message volume.
  • Professional excavators and homeowners are required by state law to notify JULIE at least two business days (excluding weekends and holidays) in advance of the start of their project. The call to and service provided by JULIE members are free. Simply call 8-1-1 or 800-892-0123.
  • Since its inception in 1974, JULIE has logged over 30 million calls and its annual call volume makes it one of the largest industry one-call systems in the United States. More than 60 percent of notifications are now entered online by professional excavators and homeowners through self-service options.  Because one call to JULIE, Inc. can result in communication with multiple members, the more than 1.55 million notifications to JULIE, Inc. in 2017 resulted in 9 million notification messages being transmitted to members.
  • JULIE was formed by the owners and operators of underground utility facilities as a means of reducing damage to those facilities. JULIE began operations in 1974 in Will County and expanded its coverage to include all of Illinois as of Dec. 1, 1980, except for the city of Chicago, which is served by 811 Chicago at (312) 744-7000.
  • In 1976, the JULIE System was accepted by the Illinois Commerce Commission as compliance with the one-call notification section of General Order 185. The Illinois General Assembly enacted the Illinois Underground Utility Facilities Damage Prevention Act on January 1, 1991.  Changes to the Act became effective in 2002, 2003, 2004, 2005 and 2009.  The law requires anyone excavating to contact the Illinois One-Call System before digging and requires owners and operators of underground utilities to be members of the one-call system.