Ever noticed a bunch of spray-painted lines on the street? Of course you have (I’m not talking about graffiti).
What do these strange markings mean?
The standard color-coding system used by most utilities is:
Red: Electric power lines, cables or conduit; lighting cables.
Yellow: Gas, oil, steam, petroleum or other hazardous liquids or gases.
Orange: Communication, cable TV, alarms or other types of signal lines, cables or conduits.
Blue: Water and irrigation lines.
Green: Sewer lines, storm sewer facilities or other drain lines.
Just thought you should know.
Source: Before digging anything else, dig this – By Paul Bianchina, Inman News, by way of The Boston Globe