Locating a Pipeline

For safety reasons, most of our pipelines are buried. To identify them, look for the line markers like those shown below. We install markers at roads, rail and river crossings, and other places along the right of way. Markers show the line’s approximate location, and they also provide emergency contact information.

comm_env_plmarkersMarkers do not provide information on the depth or number of pipelines in the vicinity and do not indicate the exact position of the pipeline. Pipelines may not follow a straight path between markers. Pipeline markers are generally yellow, black and red in color. Look for these signs:

  • Painted metal or plastic posts
  • Signs located near roads, railroads and along pipeline right-of-ways
  • Pipeline casing vent
  • Marker for pipeline patrol airplane

Be smart — familiarize yourself with pipeline markers on or near your property. If you knock over a marker, please call us so we can replace it. If you would like more pipeline markers on your property, give us a call.

In case of an emergency, call 911 or your local emergency response number and our 24-hour emergency number listed on the line markers near your home or business. Even minor dents, chips or scrapes to the pipeline are serious and may cause future leaks if they are not repaired.

In addition to looking for markers, the public can search for pipelines in their community by referencing the National Pipeline Mapping System. The National Pipeline Mapping System (NPMS) is an online mapping system created to educate the public about pipelines in their community. Enter your ZIP code and NPMS provides a list of pipelines, their location, general commodities transported and operator contact information.