The Illinois Underground Utility Facilities Damage Prevention Act (the Act) was enacted in 1991 and amended several times, most recently in 2026. The Act is designed to protect public safety, reduce the risk of injuries and damages, prevent service disruptions, and support the safe expansion of essential public services.
Below is an overview of some key requirements of the Act you need to understand so you can comply with Illinois law and keep your digging projects moving safely.
You must submit a locate ticket at least 2 days—but no more than 10 days—prior to your proposed excavation. Weekends, JULIE recognized holidays, and the day you submit the locate ticket do not count toward the notification timeline. Your locate ticket is valid for 25 days including the day of the request, with extensions allowed between day 20 and 25.
Pre-marking your proposed dig site is required for all excavation projects. It helps utility locators identify where work will take place and streamlines the process. Illinois law allows pre-marking to be done physically or verbally if calling 811 or (800) 892-0123. Electronic white lining will be available soon.
Using JULIE’s online Positive Response system is mandatory—whether you’re a utility facility owner or operator, a contractor or a homeowner. It’s an efficient way for all parties to communicate regarding the status of a locate ticket.
Understanding your responsibilities under the Act isn’t always easy. If you have questions about safe digging requirements or how they apply to your project, JULIE has resources and Damage Prevention Managers available to help.
The Illinois Commerce Commission (ICC) is responsible for enforcing the Act. This state regulatory agency reviews reports of alleged violations, determines whether a violation occurred and assesses penalties accordingly.