Utility operators maintain the underground pipes and wires that serve your home. Part of their maintenance program is to mark their lines whenever someone places a “notice” or “ticket” with the Virginia 811 center. Utility operators mark any underground line that is directly in the way of construction, or even near it. If your lawn is marked and you didn’t know about it, then either your neighbors are planning some work, a utility operator is planning maintenance or repair, or the Virginia Department of Transportation, or your Town, City, or County is planning excavation work.Utility color codes are used to identify existing underground utilities in construction areas with the intent of protecting them from damage during excavation. This is done with either flags or a special spray paint, neither of which will cause long-term harm to your lawn.
The American Public Works Association (APWA) Uniform Color Codes for temporary marking of underground utilities are listed below:
 Red electric power lines, cables, conduit, and lighting cables
Red electric power lines, cables, conduit, and lighting cables
 Orange telecommunication, alarm or signal lines, cables, or conduit
Orange telecommunication, alarm or signal lines, cables, or conduit
 Yellow natural gas, oil, steam, petroleum, or other gaseous or flammable material
Yellow natural gas, oil, steam, petroleum, or other gaseous or flammable material
 Green sewers and drain lines
Green sewers and drain lines
 Blue potable (drinkable) water
Blue potable (drinkable) water
 Purple reclaimed water, irrigation, and slurry lines
Purple reclaimed water, irrigation, and slurry lines
 White proposed excavation limits or route
White proposed excavation limits or route
For ALL Excavation work ANYWHERE in Virginia! Call 811 or 1-800-552-7001 or visit va811.com