These flags mark the location of underground utilities so that a given contractor can avoid hitting them. Please do not remove these flags as they are for everyone’s safety. Below are the different flag colors with a description of what they are marking:
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.
Pink - Temporary survey markings.
White - Proposed excavating.
Ohio Utilities Protection Service