Daily Water Supply
| Related Links | |
|---|---|
 | Water Storage in Perth's Dams |
| | Statewide Dam Storage Levels - Current storage information for all our dams and reservoirs |
 | Streamflow Graph - Streamflow for Major Surface Water Sources (including include Stirling, Wokalup and Sampson Brook Dams) |
| | Yearly Streamflow - Yearly Streamflow for Major Surface Water Sources |
| | Explanation of the units used to specify water consumption. |
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Water Supplied Daily to the Perth Metropolitan Area plus part of the South West Region for the 24 hrs up to 9am on 6 September 2010
The total supplied today: 537 megalitres (ML)
Water Supplied Daily to the Perth Metropolitan area (plus parts of the South West Region) during the last Seven Days
| Date | 31 Aug | 1 Sep | 2 Sep | 3 Sep | 4 Sep | 5 Sep | 6 Sep |
| Supplied to Perth metropolitan area | 451.9 | 430.4 | 465.8 | 425.5 | 442.8 | 455.6 | 503.4 |
| Supplied to Other Areas * | 26.7 | 27.9 | 29.1 | 25.8 | 30.8 | 27.1 | 33.6 |
| Total supplied daily (ML) | 478.6 | 458.3 | 494.9 | 451.3 | 473.6 | 482.7 | 537 |
* Only includes water provided by Perth's dams to parts of Harvey, Mandurah, Pinjarra and Carcoola.
The most water supplied to the Perth Metropolitan area (excluding Mandurah/Pinjarra) during any single day was 1,259 ML on 31 January 1991. The temperature on that day was 45.8 degrees.
In the 2008/2009 financial year, the average daily volume of scheme water used by each household in Perth was 734 litres. The residential per capita consumption (the amount of scheme water each person used) was 280 litres each day. This is down from 296 litres per person in 2004/05.
Remember, Be Waterwise
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Waterwise information - Use water wisely in your home and garden. Help to conserve Perth's precious water resources for the future |
Sources of Perth's Water
Water in the metropolitan area comes from three sources:
- Surface water is obtained from dams (storage reservoirs) on rivers in the Darling Range. Surface water sources supply 25-45% of the Perth region's water.
The dams supplying water to Perth, Mandurah, Pinjarra and the Goldfields and Agricultural regions are Canning, Serpentine, Serpentine Pipehead, Conjurunup Pipehead, Victoria, Mundaring Weir, South Dandulup, North Dandalup, Wungong, Stirling and Churchman's Brook. Note that Mundaring Weir normally only supplies water to the Goldfields and Agricultural Region. - Groundwater, supplying approximately 35-50% through the integrated system, is obtained from huge natural reservoirs in the deep sands of the coastal plain. Groundwater is treated at groundwater treatment plants at Jandakot, Mirrabooka, Wanneroo, Neerabup, Lexia and Gwelup.
- The Perth Seawater Desalination Plant in Kwinana, opened by the Premier Mr Alan Carpenter on 18 April 2007, is now Perth's largest single source of water, supplying 15-20% of the city's water needs.
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Sources of Perth's water |
Units Used to Specify Water Supply
Water Supply is quoted in Megalitres (ML)
| One Gigalitre | = | one thousand Megalitres | |
| One Gigalitre | = | one million kilolitres | |
| One Megalitre | = | one thousand kilolitres | |
| One Megalitre | = | one million litres | |
| One kilolitre | = | one thousand litres | |
| One kilolitre of water | = | one thousand kilograms | = one tonne |
