Buried utilities are marked with flags, paint, or stakes in accordance with the Ohio universal marking standards. Distinct colors are used for each utility type based on the following American Public Works Association (APWA) Uniform Color Code:

Color Codes

  • White – Proposed Excavation

  • Pink – Temporary 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 or Slurry Lines

  • Green – Sewers and Drain Lines