Call Before You Dig

Ontario One Call Ltd. or ON1Call is a Non-For-Profit corporation formed 1996 to establish a call centre to receive excavator locate requests within the Province of Ontario and to notify the members with underground facilities in the vicinity of the dig.

For information about ON1Call, please visit

The purpose of the system is 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.