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Call before you dig

Before any digging, drilling or excavation in Niagara, you're required by law to contact Ontario One Call to have underground utilities located and marked — at no cost to you.

A shovel

Ontario One Call

Contact to request a locate 24 hours a day, 7 days a week

1-800-400-2255

Submit a locate request online

Who needs to call

Contractors and excavators

Homeowners doing yard work

Landscaping companies

Drilling and blasting crews

Construction project managers

Anyone augering or boring

How it works

1
Call or submit online at least five business days before you plan to dig.
Ontario One Call is free and available any time.
2
Utility owners are notified.
This includes Niagara Region for water transmission mains, sanitary trunk sewers and traffic signal conduit.
3
Underground lines are marked at your dig site using standardized colour codes before your project start date.
4
Dig safely within the marked boundaries.
You remain responsible for hand-digging near marked lines.

Legal requirement

The Ontario Occupational Health and Safety Act requires that all underground services be accurately located and marked before any excavation begins (O. Reg 213/91, Section 228).

Failure to locate underground utilities before digging can result in serious injury, death and interruption of essential services, including drinking water and wastewater service for Niagara residents. Contractors and employers may face fines and liability if this requirement is not met.