Requesting a locate through Ontario One Call is free.

What Is Ontario One Call?

If you are planting a tree, building a fence or a deck, digging a new garden, or doing any project that requires you to dig, you must contact Ontario One Call at least 5 days before.

Ontario One Call will notify buried infrastructure owners that you plan to dig. Reps from each underground buried infrastructure owner will come out to mark the location of buried underground lines and cables on your property so that you can dig safely.

Contacting Ontario One Call is free and will help protect your property and your loved ones.

5 Steps to safe digging

Step 1 Step 1


Contact Ontario One Call (for free) a minimum of 5 business days before your dig. Provide required information: who, when, where, maximum depth, type of work (fence, pool, landscaping, etc) and method (machine or hand).

Step 2 Step 2


Wait for utility and buried infrastructure companies to mark (locate) or clear your digging area.

Step 3 Step 3


Confirm all buried infrastructure companies have responded to your request and marked the dig area properly.

Check your email!

Step 4 Step 4


Respect these marks.
These marks will be colour-coded and each buried infrastructure company will provide instructions that relate to your locate.

Step 5

Hiring a Contractor?

If you have hired a contractor, make sure your contractor has contacted Ontario One
Call before they start your project. If you are a contractor click here

Requesting a locate through
Ontario One Call is free

You must contact Ontario One Call a minimum of 5 business days (excluding weekends and holidays) before digging.

There are two ways to make a locate request

Use our web portal to save time and make the most accurate locate request

Call our customer service agents