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Log in to BPC Online
- Apply for and manage building permits (replaces BAMS)
- Apply for and maintain registration
- Keep insurance up to date
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Log in to BAMS
- Apply for building permit numbers (BPNs)
- Process levy payments
- Submit relevant building surveyor monthly reports for prescribed events
- Amend BPN records and building permit details
- Advise changes to the cost of buildding work
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- Purchase and manage compliance certificates
- Create and amend drain inpection bookings
- Submit and track a building or plumbing complaint
- Submit, manage and track an owner-builder application
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- Apply for a plumbing licence and/or registration
- Renew a plumbing licence or registration
- Update plumber persional details
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- Purchase domestic building insurance (DBI)
- View certificates of insurance
- Access your DBI letter of eligibility
- Check current job limits and premium rates
What is backflow prevention work?
Get to know the regulation
Under Part 5 of the Plumbing Regulations 2018, Backflow Prevention work is the repair, alteration, maintenance, testing or commissioning of a backflow prevention device, which is capable of being tested and is listed in Column 1 of Table 4.4.1 of AS/NZS 3500.1.
Typical backflow prevention work
Backflow Prevention work protects a property's drinking water supply from contamination that may be caused by backflow. Experienced backflow prevention plumbers typically do the following work:
- Selecting appropriate backflow prevention devices.
- Installing and testing backflow prevention devices.
- Maintaining and repairing backflow prevention devices.
- Completing required compliance documentation when the backflow device is commissioned.
As a registered practitioner in this class, you must understand and apply the compliance requirements of backflow prevention work. These requirements include the compliance requirements for the parent class of water supply work, plus:
- AS/NZS 2845.1 – Water Supply – Backflow prevention devices
- AS/NZS 2845.3, Part 3: Field testing and maintenance of testable devices
- AS/NZS 3500 National plumbing and drainage.
To undertake backflow prevention work to a safe and competent standard, you must also be able to:
- Read a site or building plan and identify water supply lines and locations.
- Identify testing and commissioning requirements.
- Read, interpret and apply manufacturer specifications for installing backflow prevention devices.
- Understand the range of backflow prevention devices available and select those applicable to the hazard rating.
- Perform accurate measurements and calculations and document results of work undertaken.
What do you need to become registered or licenced in this class?
- Be registered or licenced in the class of water supply work
- Have successfully completed the unit Commission and maintain backflow prevention devices (CPCPWT4022A or CPCPWT4022).
- Successfully complete the BPC exam for this class.
Licencing
To be eligible to become licenced in this class, you must be:
- Licenced in the class of water supply work.
- Eligible to hold or currently hold registration in this class.
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Last updated 30 June 2026