Target Actual
February water use to date 12.4 billion litres
11.6 billion litres
Dam storage levels N/A 45.2 per cent
Monthly streamflow into dams N/A 0 billion litres
February rainfall to date 12.5 mm (January average rainfall 1876-2016) 37.0 mm
Note: 1 billion litres = approximately 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 past week was 836 million litres per day, which was below the forecast of 1,032 million litres

Daily water use for the last 5 days

Table showing daily water use for the last 5 days
Date Actual water use (million litres) Forecast water use (million litres)
12/02/2021 905 1,027
11/02/2021 837 1,027
10/02/2021 906 1,027
9/02/2021 774 1,027
8/02/2021 802 1,038
Note, water use is calculated up to 8am each day for the previous 24 hour period.

Since 1 July 2020 to date, we have used 180.97 billion litres of water – which is 1.31 billion litres above the forecast target for this period.


Dam levels (total for 15 dams)

The dam storage levels have increased slightly this week and are sitting at a combined 45.2 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 2020 the dams have received 42.5 billion litres of streamflow.  The post-1975 average for the May to April period (called the streamflow year) is 175.79 billion litres.


Sprinkler roster compliance

Since 1 January 2021, we have taken a total of 822 actions (warnings + fines) compared with 1,291 actions for the same period in 2020.


Annual rainfall

Perth has received 37.2 mm of rainfall since 1 January 2021. The average (1994-2019) rainfall for the same period to the end of February is 31.8 mm.


General water news


Bushfire relief support


Our thoughts are with everyone affected by the Wooroloo bushfire, and we thank the emergency services and volunteers who worked tirelessly to protect the community during this time.


Earlier this week, we activated our emergency assistance package for residential and business customers affected by the fire. This package includes an allowance on your bill for extra water used for:


  • Defending your property from bushfire
  • Cleaning up your property or assisting with repairs
  • Temporarily housing bushfire evacuees (business customers)


Additional support will also be provided to customers who lost their property.


A number of our customers have been directly affected by the fire, which is why we’re here to help, where we can. To find out more or to apply, please visit our Wooroloo bushfire customer assistance page.