Sydney
11.6 Delivery of desalinated water to urban water system
Supporting Information
During the 2010–11 year, Sydney's desalination plant at Kurnell supplied 77,102 ML to the Sydney Water Corporation's (SWC) urban water system. In order to produce this volume, an estimated volume of 193,507 ML of sea water was drawn. The residual hypersaline concentrate (approximately 118,809 ML) was returned to the sea.
Quantification Approach
Data Source
Provided by
Method
The volume was derived from flow meter data on the outflow of desalinated water from the plant.
The flow meter data are continually monitored and recorded. Flow meters are maintained and calibrated according to meter manufacturers' specifications. The data are stored within a complex data management system. Adjustments are made to the data (if necessary) to correct any interruptions, errors and so on. Data have been extracted for the 2010–11 year from the data management system.
Assumptions, Limitations, Caveats and Approximations
Uncertainty Information
The volume is based on measured data. Estimated uncertainty based on meter accuracy is +/– 2%.
Comparative year
The following table compares the value for the 2009–10 year reported in this account with the corresponding value reported in the 2010 Account.
2011 Account line item |
2010 Account line item |
Value reported in the 2010 Account (ML) |
Value reported in the 2011 Account (ML) |
Additional information |
11.6 Delivery of desalinated water to urban water system |
19.5.1 Delivery of desalinated water transferred in to urban water supply system |
19,952 |
19,952 |
Change in line item name |