Fixtures and fittings

BASIX assesses fittings, fixtures and appliances based on:

WELS water efficiency rating for all showerheads;

WELS water efficiency rating for all toilets;

WELS water efficiency rating for all kitchen and bathroom taps; and

for multi-dwelling unit developments (but not groups of single dwellings or townhouses), the water efficiency of water-using appliances.

Please note that the rating selected MUST match the rating of the fittings and fixtures installed in the development and this needs to be signed off by the certifier.

In the BASIX multi-unit tool the values selected will be applied to all dwellings in the dwelling type. If you wish to apply values to specific dwellings, select them individually using the checkbox to the left of the dwelling numbers.

Water ratings

Since 1 July 2006, water efficiency labelling for water-related fixtures and appliances has been mandatory. Under the Water Efficiency Labelling and Standards Scheme (WELS) all toilets, showerheads, taps, clothes washers and dishwashers are registered and rated in accordance with Australian and New Zealand Standard AS/NZS6400:2005 and must be labelled to show their water efficiency before they may be supplied for sale in Australia.

Appliances

For BASIX, water-efficient and energy-efficient clothes washers and dishwashers are available to unit developments only, to help meet the water and greenhouse gas targets. Appliances are not available for non-unit developments using the multi-dwelling tool (i.e. groups of single dwellings, townhouses etc.) or for applications within the single dwelling tool.

This interim concession was introduced on 1 July 2005 to assist unit developments in meeting water and greenhouse gas targets while appropriate alternative technologies and legislative frameworks are developed to support the wide-spread adoption of alternatives such as on-site recycled water systems and co-generation.

Clothes washers and dishwashers must be labeled according to the Water Efficiency Labeling and Standards Scheme (WELS) before they may be supplied for sale in Australia. If you will be utilizing water efficient appliances as part of your multi-unit development's water savings you need to nominate the efficiency or star rating in the on-line tool. Please note that the rating selected MUST match the rating of the appliances installed in the development and this needs to be signed off by the certifier.

Fittings, fixtures and appliances

BASIX assesses fittings, fixtures and appliances based on:

  • WELS water efficiency rating for all showerheads;
  • WELS water efficiency rating for all toilets;
  • WELS water efficiency rating for all kitchen and bathroom taps; and
  • for multi-dwelling unit developments (but not groups of single dwellings or townhouses), the water efficiency of water-using appliances.

Please note that the rating selected MUST match the rating of the fittings and fixtures installed in the development and this needs to be signed off by the certifier.

In the BASIX multi-unit tool the values selected will be applied to all dwellings in the dwelling type. If you wish to apply values to specific dwellings, select them individually using the checkbox to the left of the dwelling numbers.

 

Water efficiency labelling and standards (WELS) scheme

Since 1 July 2006, water efficiency labelling for water-related fixtures and appliances has been mandatory. Under the Water Efficiency Labelling and Standards Scheme (WELS) all toilets, showerheads, taps, clothes washers and dishwashers are registered and rated in accordance with Australian and New Zealand Standard AS/NZS 6400:2016 and must be labelled based on how efficiently they use or deliver water before they may be sold in Australia.

The label shows:
  • zero to six-star rating that allows a quick comparative assessment of the product's water efficiency
  • a figure relating to the water consumption/flow rate of the product, based on laboratory tests.

The testing requirements to determine water flow rates for the WELS ratings of showerheads and taps cover both high pressure (at or above 150kPa) and low pressure (under 150kPa) conditions. The tap or fixture installed should be rated in accordance with the pressure available.

Products currently covered by WELS scheme:
  • showerheads
  • taps and tap outlets (excluding taps exclusively over baths)
  • toilet suites or matched cistern and pan sets
  • appliances (unit developments only)

The more stars a water fixture or appliance has, the greater the water efficiency of that fixture and the greater the BASIX water target savings.

In addition, choosing more efficient hot water-using fixtures, such as showerheads and taps, will have a positive impact on your BASIX energy score.

Example of WELS water rating labelExample of WELS water rating label

 

Find more information on the Water Efficiency Labelling and Standards (WELS) Scheme

Waterless toilets

Waterless toilets do not require any water for flushing purposes. Waterless toilets are also referred to as 'waterless composting toilets'.

If you nominate a waterless toilet in BASIX, every toilet in your development must be a waterless toilet.

NSW Health are responsible for accrediting waterless toilets for various purposes and a list of accredited waterless toilets can be viewed on the NSW Health website.

Please be aware that you will also require approval from your local council to install a waterless toilet in your development.

Note: that BASIX still requires a connection to be nominated within the tool in order to complete the calculations. Please leave 'town supply' as the selection for your toilets. This does not impact on your BASIX commitments and your development still receives the full savings for a waterless toilet.

Hot water recirculation systems

  • Hot water recirculation systems circulate the water in the hot water pipes back to the water heating system until the hot water at the fixture reaches the set temperature. All of the water is saved.
  • On-demand hot water recirculation systems are triggered by operation of the hot water tap, a switch or a sensor. There is a moderate amount of additional energy for the circulation pumping.
  • Continuous or timed hot water recirculation systems circulate the water continuously or for a period of time each day that is set on a timer. These systems can be nominated in BASIX will not improve your water because of the detrimental impact on energy consumption.

The installation of a hot water recirculation system will require discussion with your plumber/hydraulic designer, to ensure they understand the plumbing requirements for these systems, and factor this in during design/installation stages of the development. The system must be permanently connected to every hot water-using fixture located within the dwelling.

Further information and installation advice is available from the respective manufacturers of these systems.

Note: a hot water recirculation system is NOT an instantaneous hot water system. For further information on hot water systems, refer to the help notes within the 'Energy' section.

Showerheads

The Plumbing Code of Australia sets a minimum requirement for showerheads with a flowrate of not more than 9 litres per minute in new developments. This is equivalent to a WELS rating of 3 stars.

AS6400:2016 defines WELS ratings of showerheads based on their nominal flow rates and compliance with spray force and coverage tests. A showerhead with a nominal flowrate of not more than 7.5 litres per minute is rated WELS 4 stars if it complies with spray force and coverage tests.

BASIX users can nominate the specific flow rate of the 3-star showerheads selected for their development and receive the appropriate water savings for these selections. The choices available are:

  • more than 7.5 litres per minute but not more than 9.0 litres per minute
  • more than 6.0 but not more than 7.5 litres per minute
  • more than 4.5 but not more than 6.0 litres per minute.

For 4-star showerheads, the following choices are available:

  • more than 6.0 but not more than 7.5 litres per minute
  • more than 4.5 but not more than 6.0 litres per minute.

Note: These flow rates will need to be certified during the approval process. If you are not sure of the flow rate of showerheads in your development you should select the least efficient flow rate (more than 7.5 litres per minute but not more than 9.0 litres per minute).