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Understand the American Public Works Association (APWA) uniform color codes used to mark underground utilities. Learn what each color, including red, yellow, and blue, represents to …

What do the colors mean? Locators use the APWA Uniform color code to mark underground facilities. Each color used represents a different type of utility. The chart depicts what each …

If you have questions regarding the APWA Uniform Color Code, we recommend contacting your state's Utility Notification Center. For contact information, please choose your state above and …

APWA Uniform Color Codes for temporary marking of underground utilities RED – Electric Power Lines, Cables, Conduit, and Lighting Cables YELLOW – Gas, Oil, Steam, Petroleum, or …

Color Code: A uniform color code and set of marking symbols is adopted nation wide. The following APWA uniform color code (ANSI Z535.1) shall be adopted as the uniform color code …

To better understand what type of utility was marked, refer to the APWA color code chart—each color corresponds to a different utility (e.g., red for electric, yellow for gas). Use this chart as a …

The American Public Works Association encourages public agencies, utilities, contractors, other associations, manufacturers and all others involved in excavation to adopt the APWA Uniform …

Utility color codes are used to identify existing underground utilities in construction areas with the intent of protecting them from damage during excavation. This is done with either flags or a …

APWA Uniform Color Codes The American Public Works Association (APWA) recommends the following guidelines be used when marking underground facilities.