City of Fairfield, Ohio
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City of Fairfield, Ohio

Call Before You Dig

The Ohio Utilities Protection Service (O.U.P.S.) provides a state-of-the-art call center that operates 24 hours a day, seven days a week, to answer calls from anyone who intends to dig in the State of Ohio. Visit for more information on this service, or call (800) 362-2764 before you dig.


Color Codes

The American Public Works Association encourages public agencies, utilities, contractors, other associations, manufacturers and all others involved in excavation to adopt the ULCC Uniform Color Code using ANSI standard Z53.1 safety colors as shown below.


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.