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APPENDIX
A1 APWA Marking Colors - The following color markings have been
established by the American Public Works Association (APWA):
Conductor
Color
______________________________________________
Electric power lines, cables,
or conduits
Red
______________________________________________
Communication lines, cables,
conduits, CATV
Orange
______________________________________________
Gas, oil, petroleum, or other
gaseous materials
Yellow
______________________________________________
Sewers, storm and sanitary,
drain lines
Green
______________________________________________
Water, irrigation, or
slurry lines
Blue
Note: If you have any questions regarding marking requirements or
procedures in the United States, please call you local One Call Center.
International customers: please check with your local regulatory
authorities or utility companies. Required color markings may vary
between different countries.
