Contents

Uniform Color Code of the American Public Works Association

Color Feature Identified
White – Proposed Excavation
Pink – Temporaty Survey Markings
Red – Electric Power Lines, Cables, Conduit and Lighting 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

USA (Canada)

  • National Call Before You Dig (811)
  • Phone: 811 - This is a national call number where you can locate individual state/area numbers. When digging in any state always check the rules for that state because they will vary.

Alberta

British Columbia

Ontario

Quebec

Saskatchewan

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