Water and Irrigation Lines
Ontario Regulation 213/91: Construction Projects states the following about precautions to be done before excavation:
the employer excavating shall ensure that all gas, electrical and other services in and near the area to be excavated are located and marked.
Water and irrigation lines are the main systems that deliver water to your house, building, institution, etc., for your daily use and your irrigation needs. Locating watermain and irrigation lines is very important as breaking these underground lines will cost you time and thousands of dollars to fix. The best way to eliminate this risk is to request a utility line locate before you commence your work. This will give you the clearance you need to have before starting any digging in the intended area of construction. And as the old saying goes, CALL BEFORE YOU DIG!