Natural gas lines can sometimes intersect with sewer lines beyond the outside wall of your home or building, which is known as a cross bore. In these cases, clearing a blocked sewer line with
When left undisturbed, cross bores do not pose a safety risk.
Before clearing a blocked sewer line, call Ontario One Call at 1-800-400-2255 to arrange a free sewer safety inspection. Your gas utility will respond within two hours. For more information, call customer service, Monday
Learn more about this topic from our web page on sewer cross bores or watch the brief video below.