What is a Form 4

What is a Form 4

We are frequently asked by clients why we are charging them for a Form 4. The simple answer is because it’s the law.

The reality is the Form 4 system for plumbing and drainage work has existed for over 20 years.

Originally licenced plumbers were required to submit a Form 4 to the local authority plumbing inspectors. On the Gold Coast that meant we submitted them to City of Gold Coast’s Plumbing and Drainage section when undertaking replacement of part of the sewer house drain or water main or replacing a hot water service.

In 2012 legislative changes required that we lodge them with the Department of Housing and Public Works through the Plumbing Industry Council, (PIC) and for the first time we had to pay a fee for lodging a Form 4 of $25.90. In 2014 the QBCC took over the Form 4 process as part of their assuming responsibility for plumbing occupational licensing.

Once a Form 4 is lodged, then it is subject to a random compliance auditing process to ensure the work is compliant with the Plumbing and Drainage Act 2018 and the Plumbing and Drainage Regulation 2019. This is undertaken to ensure the work is being conducted to the highest standards to protect everyone’s wellbeing, health and safety.

Whywait Plumbing has always supported the Form 4 process as it ensures that all work on your property is compliant and is registered with both QBCC and City of Gold Coast. If you have a significant insurance claim involving a plumbing failure, an accessor can quickly backtrack to ensure that the work was undertaken legally and compliantly.

Ultimately a Form 4 is there for the homeowner’s protection.

What is plumbing & drainage work notifiable work?

The definitions of notifiable work changed on 1 July 2019. These changes were to ensure clarity and usability, coupled with cost-effective plumbing laws and regulations for plumbers and property owners.

There are essentially twelve categories of notifiable plumbing and drainage work that require a Form 4 which are:

  1. Extending water supply pipes – this is any work on water reticulation pipes other than a fire service on an existing building
  2. Extending or removing a fire service – this applies to any class 2-9 building with a development approval as per schedule 2 of the Building Act 1975
  3. Existing sanitary plumbing – this any work on an existing building where sanitary plumbing is removed, replaced, altered or extended
  4. Existing sanitary drainage – this any work on an existing class 1 to class 10 building involving extending, replacing, altering or removing any part of the sanitary drain system apart from a combined sanitary drain plus it also applies to extensions or alterations to a class 1 building
  5. Temperature control devices – this is any work with a TMV or tempering valves in any existing building requiring installing, replacing or removing a valve plus it also applies to extensions or alterations to a class 1 building
  6. Water heaters – this is any work undertaken in any existing building requiring installing, replacing or removing a hot water heater plus it also applies to extensions or alterations to a class 1 building
  7. Backflow prevention devices – this is any work with a testable backflow device or dual check valve in any existing building requiring installing, replacing or removing a valve plus it also applies to extensions or alterations to a class 1 building
  8. Greywater treatment plants – this any work involving the installation of a greywater use system that includes a greywater treatment plant installed in a sewered area where the plant generates less than 3kL of greywater daily or for replacing a greywater plant
  9. Fixtures in class 1 or class 10 building – this is any work required for installing a new fixture or relocating an existing fixture in an existing class 1 or class 10 building plus it also applies to extensions or alterations to a class 1 building
  10. Fixtures for class 2 to 9 buildings of 1 or 2 storeys – this is for all work other than sanitary drainage required for installing or relocating a fixture provided the work is for an existing class 2 to 9 building up to two storeys above ground
  11. Sanitary drains – this is any work undertaken to seal a sanitary drain after the connection point to the council sewer or a treatment plant
  12. Sealing supply pipes – this is any work undertaken to seal a water supply pipe after the council water meter provided the work is for an existing class 2 to class 9 building

The QBCC publish simple guides to what is notifiable work and the definitions of building classes as defined in the Building Code of Australia which you can download below:

Form 4 notifiable work compliance

Every reputable professional plumber, I know 100% supports the notifiable work system. It ensures for homeowners and property owners that all work undertaken on their property is performed to the standards required.

If you have had plumbing or drainage work undertaken that you have not been supplied with a Form 4 as per the form shown above and is covered in the categories listed then, you need to report it to the QBCC now or call them on 139333. Ultimately high-quality plumbing and drainage protects your health.

If you are uncertain or need assistance contact us on (07) 5580 4311 and we will give you our considered opinion. Ultimately all plumbing work is not about guesswork; it is about compliance with the law, and the law is the Plumbing and Drainage Act 2018.

Why Do I Need A TMV or Tempering Valve?

Why Do I Need A TMV or Tempering Valve?

Every week we have clients asking why we are required to install a TMV or tempering valve to their hot water system. The short, simple answer is because it’s the law.

The longer answer is because it’s about safety. A TMV or tempering valve reduces the risk of scalding. This is because storage type gas, electric, solar and heat pump systems are storing hot water at between 60° C and 75° C. You need to be aware a severe hot water burn can occur in one second when the water is delivered at 60° C or higher. Hot water burns like fire because:

  • At 60°C, a severe burn can happen in 1 second
  • At 55°C, a severe burn would take 10 seconds
  • At 50°C, a severe burn would happen after 5 minutes

What is a TMV?

TMV or thermostatic mixing valve installed by Whywait Plumbing Services Gold Coast

TMV or thermostatic mixing valve installed by Whywait Plumbing

A TMV is a thermostatic mixing valve but is commonly referred to as a TMV. The role of a TMV is to mix hot and cold water together to provide you with hot water delivery at your tap that is at a consistent temperature.

When we install your TMV, we set the temperature to deliver the hot water in all bathrooms at 45°C in aged care or childcare facilities or 50°C in all other bathrooms.

A TMV is compulsory for use when used in common areas for aged care or childcare. A TMV is very accurate and very responsive to fluctuations in incoming water temperatures keeping the temperature to within 1° C of the temperature that it has been set at when we install it.

Accuracy of temperature in the TMV is delivered by a thermally sensitive element which expands and contracts in response to the temperature fluctuations of the incoming cold and hot water. This expansion and contraction regulate the temperature by controlling how much cold water mixes with the hot water. An added safety feature of a TMV is that if cold water flows become too low, they shut down to prevent 60°C plus water being delivered.

What is a Tempering Valve?

illegal tempering valve installation replaced by Whywait Plumbing

Non-compliant tempering valve installation connected with flexihoses replaced by Whywait Plumbing

A tempering valve’s role is also to mix hot and cold water together to provide you with hot water delivery at your tap that is at a consistent temperature.

The tempering valve is a simple three-way valve that is temperature actuated to mix the hot and cold water. These days most come preset at 50°C and when we install them, we test them by measuring the temperature of the water from your hot taps in the bathroom.

A tempering valve is commonly used in residential homes as a one-off valve at the hot water service. A tempering valve is slower to respond to temperature fluctuations compared to a TMV plus it will deliver water to within 3°C of the temperature that it has been set at when we install it.

Which Valve do you Require?

The Plumbing Code of Australia in AS/NZS 3500.4:2018 is very specific about water temperature is section 1.11, which states:

  • To avoid the likelihood of legionella bacteria growth, an installation shall store water at a temperature of not less than 60°C
  • All new heated water installations shall deliver heated water not exceeding 45°C for the aged, the sick, children or people with disabilities in healthcare, aged care, early childhood, schools and nursing homes. For all other situations, heated water shall be delivered not exceeding 50°C.

Ultimately when we are installing a temperature control device, we are legally obliged to comply with the requirements above and much more as they are prescribed in AS/NZS 3500.4:2018.

Overall a TMV is more expensive to install initially compared to a tempering valve. However, a TMV has a much longer working life span compared to a tempering valve as they are more accessible to service and replace the working parts. A tempering valve, by comparison, is usually just replaced when it stops working as they are not easy to service or replace parts in.

In Queensland, all work undertaken on a TMV or tempering valve is reportable to the QBCC and must have a compliant Form 4 submitted. For your protection always demand a copy of your Form 4.

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