WELS: The water efficiency labelling scheme began in 2006 and has a range of products for water efficiency to save water and money.
A standard showerhead uses about 15 to 25 litres per minute. That's at least 120L of water per average 4-8 minute shower. A water flow efficient model uses less than 72L, 40% less water. That would save you about 14,500 litres per household per year.
A typical tap discharges 15 to 18 litres per minute. Fitting flow restrictors or water efficient aerators to your taps can save up to 50% of water on your kitchen, bathroom and laundry taps.
Toilets are notorious for their hidden and silent water waste. they are commonly one of the biggest sources of water loss. A small invisible toilet leak of two tablespoons per minute turns into 40 litres per day, 280 litres per week or 15,000 litres per year.
9 or 12 litre flush cisterns are outdated. A 4.5 litre full flush / 3 litre half flus system will save you around 30,000 to 40,000 litres per year.