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

For a list of our Members CLICK HERE

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.

Latest News – 02/19/2014

- Schedule 2 of By-law No 2 – Members Terms and Conditions

- An important notice from ON1Call regarding the new Contractor Bridge

ON1Call has produced useful information for excavators and infrastructure owners to help in understanding the new Ontario Underground Infrastructure Notification Systems Act 2012

For any of the above CLICK HERE

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Please visit the Resource Centre for documents pertaining to ON1Call’s Governance.

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