Regardless of your project’s size, you are legally required to contact Colorado 811 at least three
business days before you dig. Fortunately, our free and efficient service makes it easy to
request information regarding the location of underground public utility lines.
Contact 811
Visit colorado811.org or call 811 to request a free underground public utility line locate. This service protects public underground utilities such as gas, electricity, water, sewer, and internet lines. Remember, “privately owned utilities” won’t be included in this service.
Wait and Track your Ticket
Wait at least 3 full business days and track your ticket on colorado811.org. Utility companies will respond with a message indicating the status of your request.
Respect the Marks
If utilities are present, the location of the utility line will be identified by paint and/or flags. Once marked, maintain the marks to ensure they remain visible while digging so you do not hit the lines below.
Dig Safely, Dig Carefully
Dig with care, using extra caution near markings. Always dig cautiously with hand tools when digging within 18 inches of a mark or flag for a public utility line. Ask your landscaper or excavator do to the same.
New Colorado 811 Exactix Ticketing System
Colorado 811 is moving from the Norfield system to Exactix, a modern web-based ticket management platform trusted by 811 centers and damage prevention professionals nationwide. This transition was made to overcome technology limitations, offer greater flexibility, and allow easier in-house adjustments and integration with existing software used across Colorado. With robust reporting features and a user-friendly design, Exactix will streamline locate requests and enhance communication between excavators, utility operators, and Colorado 811—ultimately improving service for the entire excavation community.
Exactix for Professional ExcavatorsExactix for Facility Owner/OperatorsOn-demand education and events
Stayed informed on excavation safety, see upcoming events, and schedule personalized damage prevention training.
Learn More


