- Toilet flushing - 5L/flush for a dual flush system, 11L/flush for single flush system
- Leaking toilet - up to 308 L/week
- Shower - 7.5L/min for a water saver showerhead, up to 20L/min for others
- Washing machine - 40-120L/load depending on size and water efficiency
- Tap - up to 30L/min depending on type and how far it is turned on
- Leaking tap - up to 200L/day
These are just a few figures - plenty more information is available on the web. Can you identify areas where you can reduce water usage around your home? Even savings of a few L/day per person will add up in the long run.
For a more detailed calculation of household water usage, have a look at the water calculator created by Melbourne water. http://www.melbourne.vic.gov.au/rsrc/PDFs/Water/CalculatorWaterMark.pdf