Register as a Contractor

There are four categories of contractors that can register under the Backflow Prevention program to carry out functions listed in the Backflow Prevention By-law including:

  1. Plumbing companies
  2. Sprinkler and Fire Protection Installers
  3. Professional engineers
  4. Corporations

We issue one permit number per company. The Master Plumber  or  P. Eng. must do all registrations. In the case of a corporation, the corporation has to register the qualified trades in person for in house work only.

The company pays a registration fee of $140.69 every year. It is your responsibility to ensure that all licenses are kept up to date with the City or you will be classified as inactive and unable to submit any documentation under your permit number.

How to register as a contractor

You must register in person as a contractor at:

City of Hamilton
Public Works, Hamilton Water Division
330 Wentworth Street North
Hamilton, Ontario L8L 5W2

To register as a contractor you need to bring copies of the following documents with you for our records:

The Master Plumber must complete the registration.  You can register any Journeyman Plumbers and Apprentice Plumbers under your company. You need to provide copies of the following documents:

  • City of Hamilton Master Plumbing License
  • City of Hamilton Contractors License
  • Journeyman Plumbers: Journeyman’s License along with an OWWA or ASSE Testers Certificate
  • Apprentice Plumbers: Contract of Apprenticeship along with an OWWA or ASSE Testers Certificate
  • Calibration Certificate for your backflow device test equipment

The Master Sprinkler and Fire Protection Installer must complete the registration. You can register under your company any:

  • Journeyman Sprinkler and Fire Protection Installer
  • Sprinkler and Fire Protection Installer
  • Apprentice Sprinkler and Fire Protection Installer

You need to provide copies of the following documents:

  • City of Hamilton Master Sprinkler and Fire Protection Installer License
  • City of Hamilton Contractors License
  • Journeyman Sprinkler and Fire Protection Installer:Journeyman’s License along with an OWWA or ASSE Tester Certificate
  • Apprentice Sprinkler and Fire Protection Installer:Contract of Apprenticeship along with an OWWA or ASSE tester Certificate
  • Calibration certificate for your backflow device test equipment

The P. Eng. must complete the registration. You can register any certified Engineering Technologists under your company. You need to provide copies of the following documents:

  • Your P. Eng. Diploma or wallet card along with an OWWA or ASSE testers certificate
  • CET: your CET certificate along with your OWWA or ASSE testers certificate
  • Calibration certificate for your backflow device test equipment

The corporation must complete the registration.You can register under your corporation any:

  • Journeyman
  • Plumbers or Apprentice Plumbers
  • Journeyman Sprinkler and Fire Protection Installer
  • Apprentice Sprinkler and Fire Protection Installer

You need to provide copies of the following documents:

  • A letter on company letterhead indicating that the corporation authorizes the individuals to carry out functions for in house use only
  • Journeyman Plumbers: Journeyman’s plumbing license along with an OWWA or ASSE Testers Certificate
  • Apprentice Plumbers: Contract of apprenticeship along with an OWWA or ASSE Testers Certificate
  • Journeyman Sprinkler and Fire Protection Installer: Journeyman’s license along with an OWWA or ASSE Tester Certificate
  • Apprentice Sprinkler and Fire Protection Installer: Contact of Apprenticeship along with an OWWA or ASSE Tester Certificate
  • Calibration certificate for your backflow device test equipment

When you register, we give you a Registered Backflow Testers Permit form with your license numbers and expiry dates.