Perth
11.6 Delivery of desalinated water to urban water system
Supporting Information
This line item refers to the volume of desalinated water supplied to the urban water system from the Perth Seawater Desalination Plant.
Quantification Approach
Data Source
Provided by
Method
Total desalinated water used for urban water supply is based on measured outflow data at the Perth Seawater Desalination Plant, located in Kwinana.
Assumptions, Limitations, Caveats and Approximations
It is assumed that all desalinated water is supplied directly to the urban water supply system. However, desalinated water may be stored in surface water storages prior to transfer into the urban water system.
Uncertainty Information
Expected error for water meters is +/– 5%.
The Department of Water requires that all water meters, when tested in situ conditions, must be within 5% accuracy across the full flow rate range (Guidelines for water meter installation 2009).
Comparative year
The following table presents substantive changes in the line item reported in this 2011 Account with the corresponding line item in the 2010 Account.
2011 Account line item |
2010 Account line item |
2011 Account volume for the 2009–10 year (ML) |
2010 Account volume for the 2009–10 year (ML) |
Change from the 2010 Account to the 2011 Account |
11.6 Delivery of desalinated water |
19.5.1 Delivery of desalinated water transferred-in to urban water supply system |
47,693 |
47,693 |
Change in line item name and number |