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Call before you clear

If you're experiencing a blocked sewer, it could be more than just a clog

On rare occasions, a natural gas line may have been unintentionally installed through a sewer service line. Also called cross bores, these intersecting lines can go undetected and co-exist safely until the clearing of a blocked sewer damages the pipeline. If damaged, natural gas can travel through the sewer system and into homes and businesses, risking public safety and potentially costing money for repairs.

That’s why it’s important to find out if natural gas lines may be intersecting the sewer line before beginning work to clear.

Blocked sewer? Call before you clear.

Do not begin clearing the sewer with rotating equipment or water jets until inspection has ruled out the presence of a cross bore. Even if you do not use natural gas, always call BC One Call as natural gas lines could be nearby.
  • Call or ask your sewer clearing professional to call BC One Call at 1-800-474-6886. The service is free, easy and available 24 hours a day.
  • Let the agent know that you’re calling about a “sewer service line blockage.” 
  • BC One Call will notify FortisBC immediately and we will make every effort to
    respond within two hours or less.
  • If found, cross bores are removed, and gas and sewer pipes are repaired at no cost to you.

Watch this video to learn more and stay safe:


If you have questions about cross bore safety, contact BC One Call toll free at 1-800-474-6886 or FortisBC’s natural gas emergency line (24 hours) at 1-800-663-9911.