If you are planning to dig, build or excavate on your property, it is important you locate all of your utilities first. It is the law under Ontario legislation.
Ontario One Call: Responds to excavation locate requests and notifies registered owners of underground facilities within the vicinity of the dig-site of the planned excavation.
Call at least one week before you plan to dig to be sure you get the information you need in time.
Remember to obtain the necessary permits before you start any work.