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Locate Utility Lines

To protect yourself from possible injury and from costly repairs, call the Utility Notification Center of Colorado (UNCC) at 811 before you dig.

UNCC acts as a communication center between excavators and underground facility operators by notifying the city utility for water and sewer line locations as well as the appropriate companies for gas and electric, phone and cable. They will also advise you if you need to contact anyone else.

Unless it's an emergency situation, you must allow 48 hours response time

Flag Color Codes
White Proposed Excavation
Red Electric
Yellow Gas-Oil-Steam
Orange Communication, CATV
Blue Water
Green Sewer
Pink Temporary Survey


After calling 811, crews will come by and mark the ground with flags like these, showing where infrastructure lines are underneath.