Install low flow taps

Installing low flow taps and fixing leaks are quick and easy ways to save water.

Choose low flow taps

Choose taps with built-in flow restriction devices. They are an excellent way to reduce water use, especially in high traffic areas, such as change rooms and shared facilities.


Read a transcript of this video

Recommended flow rates

  • Taps used to fill baths and sinks – 9 litres per minute
  • Taps used for hand washing – 1.5 litres per minute

Payback scenario

This calculation is based on replacing 1 typical hand basin tap (20L/min) with a WELS 6 star low flow tap (3.5L/min) and demonstrates the savings associated with reduced water and sewer charges and the payback period for the cost of the upgrade. 

Calculation: litres/minute x 0.25 minutes (15 seconds) x 80 uses/day x 5 days  x 50 weeks

Flow rate Water
$2.06/kL
Sewer
$3.01/kL
discharge factor 95%
Total water &
sewer charges
Water use
(kL)
20 L/min $206 $286 $492 100 kL
3.5 L/min
$36 $50 $86 17.5 kL
Savings $406 123.75 kL
Upgrade cost $250
Payback period = ($250/$406) x 12 months
7.4 months

For a facility with 10 taps, this represents a saving of 1,237 kilolitres and over $6,000 annually! The savings increase even further, when you factor in reduced hot water energy costs.

Find WELS 6 star taps

When choosing your low flow taps consider:

  • Quarter turn taps with ceramic seats – they provide greater flow control and are less prone to leaks
  • Fixed flow taps - such as push-button taps deliver a fixed quantity of water
  • Spring-loaded taps - shut off when user lets go
  • Infrared sensor taps – turn on when motion is detected and deliver a fixed quantity of water

Spring loaded taps, push button taps or infrared sensor taps are best suited for public amenity areas, such as change rooms, where taps can be left running.

Install a flow regulator

A flow regulator, which regulates the flow of water to a predetermined flow rate, may be a good alternative to installing new taps at your facility.

How to choose a flow regulator

Flow regulators include tap outlet aerators, tap inserts, in-line regulators and trigger operated nozzles.

  • Tap aerators – reduce flow rate by up to 50% by adding air to the flow stream. The spray-like flow maintains washing effectiveness and reduces splashing. It most cases it's the easiest way to upgrade your existing taps as the aerator is connected to the tap outlet.
  • Flow restrictors – reduce flow rate by up to 50% and they are fitted within your existing plumbing on the connecting pipe under your sink taps. Flow restrictors reduce the amount of water that passes through the pipe and are a low-cost alternative to replacing your existing fixtures with low-flow taps. 
  • Trigger hose nozzles – they use less water and deliver a high pressure stream at a regulated flow rate and shut off when the trigger is released. To further increase water savings, dry sweep the area first and use the hose as a final rinse.
  • Food service trigger hose nozzles – provide a spray pattern specifically designed to remove food scraps with little water and shut off when the trigger is released.

Your plumber can advise on the most suitable device for your business.

Repair leaking taps

Repairing just 1 dripping tap can save up to 20,000 litres of water each year. Worn washers are the most common causes of leaks. If you have a leak, contact a Waterwise Plumber.




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