PLUMBING CODE
(AWPA COLOR CODE)
Underground facilities to be marked with the following colors
Plumbing Color Code
White
Proposed Excavation
Pink
Temporary Survey Markings
Red
Electric Power Lines, Cables, Conduit, and Lightning Cables
Yellow
Gas, Oil, Steam, Petroleum, or Gaseous Materials
Orange
Communication, Alarm or Signal Lines, Cables, or Conduit
Blue
Potable Water
Purple
Reclaimed Water, Irrigation, and Slurry Lines
Green
Sewers and Drain Lines
