3.1 Urban water supply system
Volume could not be quantified in a way that is complete, neutral and free from material error therefore, it was not reported in the water accounting report. The omission of the volume is not expected to have a material impact on this water accounting report.
This item corresponds to line item 5.1 Urban potable water supply system reported in the 2010 Account. This line item was also unquantified in the 2010 Account.