Ontario One Call (ON1Call) was formed in 1996 to establish a call centre that receives excavation locate requests and notifies registered owners of underground facilities within the vicinity of the dig-site of the planned excavation. Ontario One Call became a Not-For-Profit corporation August 11, 2011, and the 'Limited' in its original name was discontinued accordingly.

Call Before You Dig 24/7 For A FREE Locate 1-800-400-2255

Natural Gas Sewer Safety Inspections

Before any work starts to clear a blocked sewer beyond the walls of a building, it is very important that you or your plumber contact Ontario One Call at 1-800-400-2255.

It’s possible that some natural gas lines could intersect with sewer service lines. A serious safety issue may result if the tools used to clear the sewer service line damage a natural gas line, causing a gas leak.

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ON1Call is recruiting for 3 positions in Northern Ontario. Please CLICK HERE to review the positions and the application process!

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Vision Statement

To reduce damages to underground facilities and promote safe excavation practices through the operation of a state of the art One Call Centre for all facility owners in Ontario.

Mission Statement

We will accomplish this by:

  • Increasing membership & understanding our member needs
  • Maintaining a mutually healthy alliance relationship with our service providers
  • Focusing on providing a cost-effective and high quality service to stakeholders
  • Promoting damage prevention initiatives in Ontario and industry wide
  • Providing an open and dependable communication channel for all stakeholders
  • Enhance call centre operational excellence through consistent, repeatable processes
  • Adopt best practices