Metro weekly water update 12 July 2019

 

	Target	Actual
July water use to date	7 billion litres	7 billion litres
Dam storage levels	N/A	46 per cent
Weekly streamflow into dams	N/A	3.7 billion litres
July rainfall to date	146.6 mm (July average rainfall 1994-2017)	66.80 mm
Note: 1 billion litres = approx. 400 Olympic swimming pools. Please note the figures in this table are rounded (except for rainfall) to the nearest whole number.

 

 

 

 

 

 

 

 

 

 

 

Water use

 

Average water use over the last week was 568 million litres per day, which was below the forecast of 572 million litres.

 

Daily water use for the last five days
Date	Actual water use (million litres)	Forecast (million litres)
12/07/2019	566	572
11/07/2019	559	572
10/07/2019	567	572
09/07/2019	581	572
08/07/2019	597	571
Note: water use is calculated up to 8am each day for the previous 24 hour period

 

Since 1 July 2019, we have used 6.2 billion litres of water – this is on track for what we had forecast for this period.

 

Dam level (total for 15 dams)

The dam storage levels have remained stable this week and are sitting at a combined 46 per cent* of full capacity.

 

*Please note some dams are filled from different sources - dam levels include the transfer of groundwater and desalinated seawater from treatment plants as well as streamflow (that comes from rainfall).  As we use many different sources of water, dams are no longer an accurate indicator of the health of Perth's overall water supply situation.

 

Streamflow (total for 15 dams)

 

From 1 May 2019 the dams have received 8.2 billion litres of streamflow.  The post-1975 average for the May to April period (called the streamflow year) is 187.2 billion litres.

 

Sprinkler roster compliance

 

The Winter Sprinkler Switch-off is now in place.  This means you need to ensure your sprinklers are kept switched off until the end of winter.

 

Our team of inspectors issued 141 warnings and 13 fines this week.  Since 1 January 2019, we have taken a total of 4800 actions (warnings + fines) compared with 5234 actions for the same period in 2018.

 

Annual rainfall

 

Perth has received 354.4 mm of rainfall since 1 January 2019.  The cumulative average (1994-2017) rainfall for the January to July period is 450.1 mm.

 

General water news

 

This week we launched a new interactive tool on our website called: “Perth’s Water Supply – Where does Perth’s Drinking Water Come From?”

 

If you’ve ever wondered how your drinking water gets to you – or where it goes once it’s flushed down the drain – then this tool will be right up your alley.

 

All you need to do is enter your address at the link below…

 

https://www.watercorporation.com.au/water-supply/perths-water-supply