Brian Holder

Brian Holder

Mr. Holder has over 15 years of subsurface utility engineering and utility locating experience on various engineering and construction phase projects across a variety of market sectors including DOT / Highway, Pharmaceutical, Energy, and Commercial / Industrial properties.

Speak with an Industry Expert Now

Our Services

What is the APWA Uniform Color Code?

Share on linkedin
Share on facebook
Share on twitter
Share on pinterest
Share on email
Share on print

The American Public Works Administration (APWA®) is a non-profit organization of companies, public works agencies, and individuals, and is headquartered in Kansas City, MO. APWA® also has a field office located in Washington, D.C.

The APWA® Uniform Color Code is a marking guideline that is universal and should be used by all professional underground utility locating companies. It provides universal understanding of the marking of underground utilities for both construction and engineering projects. It helps to prevent accidents and damage to subsurface utilities by contractors, excavators, and anyone else digging around underground utilities.

Having a uniform color code, companies and individuals always know what to expect when working around a colored line, because the color has meaning.

  • Red is used to denote high and low voltage electric.
  • Yellow is used to designate natural gas, steam, propane, and other fuel or heating products such as fuel oil.
  • Orange is used to illustrate Telephone, Fiber Optics, Cable TV, Satellite, and other types of Communications lines.
  • Blue is used to mark out potable (drinkable) water sources such as City, Municipal, and Domestic Water.
  • Green is used to designate storm and sanitary sewer pipes, both gravity and forced.
  • Purple is used to signify non-potable (non-drinkable) water sources such as grey water, pond water, irrigation, and slurry lines.
  • Pink is generally used by surveyors for temporary survey markings. Utility Locator, LLC uses pink to designate Unknown Utilities.
  • White should be used by the excavation company performing work to mark out the area that needs to be surveyed.

Share This Article

Share on linkedin
LinkedIn
Share on facebook
Facebook
Share on twitter
Twitter
Share on pinterest
Pinterest
Share on email
Email
Share on print
Print

Speak With an Industry Expert Now

(888) 792-5353

SHARE YOUR COMMENTS

More to explorer

What is an Unlocatable Utility
Damage Prevention
Brian Holder

What is an Unlocatable Utility?

A while back we published an article titled What is an Unknown Utility? The publication covered the topic of unknown utilities, and what they mean. In this article,

Read More »