• August water use is 4.16 billion litres versus a target of 4.03 billion litres. This is 3 per cent above what we would expect.


  • Dam storage levels are 35.1%.


  • Flow into dams – 25.8 billion litres of streamflow since 1 May 2017. 


  • August rainfall – 87.80mm to date.  Average rainfall for the month of August is 133.1mm.


Perth’s water use slightly higher than forecast for the time of year


The Integrated Water Supply Scheme delivers water to Perth, parts of the south west, Agricultural and Goldfields regions.  More than two million people are connected to the Scheme who together used an average of 578 million litres of water per day last week.  This is slightly more than we would expect to supply at this time of year (566 million litres per day). 


Financial year to date water use is 22.95 billion litres, which is slightly more than the 22.55 billion litres of water use we had forecasted.


The Winter Sprinkler roster is in place between 1 June and 31 August. In total this week we issued 112 warnings and 41 infringements in the metro region.  This is compared to 143 warnings and 31 infringements last week.  With more rain forecast for the next seven days our gardens won’t need any extra watering – so please keep your sprinkler systems switched off.


There has been some reasonable rainfall this week, which brings the annual total since 1 January to 625.4mm. This is below the average (678mm) for the same period.


Perth’s dam storage levels increased from 33.8% to 35.1% (1.3 percentage points) over the last seven days.  Our dams received about 9 billion litres of inflow from streams this week, which brings the total to 25.8 billion litres since 1 May 2017.  The post-1975 average for streamflow for the period 1 May to 31 August is 65 billion litres.   

You may have seen an article by Daniel Mercer at The West Australian this week about approval from the Department of Health to recharge the Leederville and Yarragadee aquifers with water from our new Advanced Water Recycling Plant.  

The approval was granted on the basis that water produced by the plant meets Australian guidelines for drinking water quality.  We hope to start recharge soon pending a license to operate the plant from the Department of Water and Environmental Regulation.

We call this new source of water ‘Groundwater Replenishment’ and it is part of Water Corporation’s long-term plan to further secure water supplies in response to climate change.  You can find out more about our plans for the future and Groundwater Replenishment on our website.

Media Enquiries:

Contact: Clare Lugar

Position: Media & Strategic Communications Manager

Phone: 9420 2555