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Click Before You Dig — Landowners

United States



Whether you’re planting a tree, digging a trench or building a fence, it is important to be aware of what’s under the ground, like water, gas and sewer lines, before you dig.

Safe digging is as simple as contacting 01-800-111-3333 before starting your job. A TC Energy representative will come to your property and mark the pipeline(s) with flags and/or paint to ensure you are aware of their location before digging. The service is free and will help protect you and your neighbors.

Crossings and encroachments

A crossing or encroachment is a temporary or permanent structure across, on, along or under a pipeline facility or pipeline right-of-way. A crossing can also mean equipment or machinery crossing over the pipeline right-of-way or facility site.  Like excavations, crossings and encroachments can pose a threat to the pipeline. Always call 01-800-111-3333 before crossing our pipelines.

I won't put a post in the ground without making sure you guys have been here and marked everything.”

Hugo Bonjean
Owner of Spirit Hills Winery

Signs of a potential pipeline leak

Although a pipeline leak is rare, it is important to know how to recognize the signs. Use your senses of smell, sight and hearing to detect a potential pipeline leak.


What you may smell

Natural gas
  • Transmission lines that transport natural gas across Mexico are rarely odorized, but may have a slight hydrocarbon smell. Distribution lines that transport natural gas to homes and businesses are odorized and could smell skunk-like or similar to rotten eggs.


What you may see

Natural gas
  • Dead or dying vegetation on or near a pipeline in a normally green area
  • Water bubbling or blowing into the air at a pond, creek or river
  • Dirt being blown or appearing to be thrown into the air
  • An accumulation of ice or frost over the pipeline (in the summer)


What you may hear

Natural gas
  • A hissing, roaring or bubbling sound

Steps to take in the event of a pipeline leak

If you witness any of the signs listed above, or any other unusual sights, sounds or smells near a pipeline location, follow these steps immediately:

  1. Leave the area on foot – don’t use motor vehicles or any equipment that could be a potential ignition source.
  2. Move to a safe location and call ‘911’.
  3. Call TC Energy's emergency number. The emergency number can also be found on all TC Energy pipeline marker signs.
  4. Warn others to stay away.


We’re here to answer your questions. For general questions, you can contact us by email, but for a quicker response, please call us directly.

Call Before You Dig
Call before you dig in Mexico: 01-800-111-3333
Emergency Response
Our commitment to the safety of our people, pipelines and facilities is unwavering. In case of an emergency, please call the appropriate 24-hour toll-free hotline:
Emergency Response Contacts: Contact Us: Emergencies