Canberra
19.4 Delivery to urban water system users

Supporting Information

This line item is made up of the potable, non-potable and recycled water provided for residential, commercial, industrial and municipal uses, and individual agricultural users. Volumes were calculated for each water quality and each user category for both ActewAGL and Queanbeyan City Council (QCC). This information can be seen in the following table.

Break down of urban water class and usage in the Canberra region

Organisation

Type of water based on water quality

Water usage

Volume (ML)

ActewAGL Potable Residential

25,204

Commercial, industrial, municipal

8,644

Other including agriculture  
Environment  
Recycled
Residential  
Commercial, industrial, municipal

158

Other including agriculture  
Environment  
Subtotal for ActewAGL   

34,006

QCC Potable Residential

2,414

Commercial, industrial, municipal

547

Other including agriculture  
Environment  
Recycled Residential  
Commercial, industrial, municipal  
Other including agriculture

48

Environment  
Subtotal for QCC  

3,009

Total

37,015

Quantification Approach

(1) Queanbeyan City Council

Data Source

Queanbeyan City Council (QCC) billing data.

Provided by

QCC.

Method

Data with a residential charge code were extracted from the billed metered consumption for 2010–11. The value is derived from measured data, with some postprocessing of the data. There is potential for errors in the data; for example, where an incorrect charge code has been applied to some meters.

Assumptions, Limitations, Caveats and Approximations

The uncertainty is estimated to be of the order of +/– 10%.

Uncertainty Information

The uncertainty estimate was not quantified.

(2) ActewAGL

Data Source

ActewAGL billing data.

Provided by

ActewAGL.

Method

Data were extracted from the billed metered consumption for 2010–11 and sorted into categories according to charge codes. The value is derived from measured data, with some post processing of the data. There is potential for errors in the data; for example, where an incorrect charge code has been applied to some meters.

Assumptions, Limitations, Caveats and Approximations

Nil.

Uncertainty Information

The uncertainty is estimated to be of the order of +/– 10%.

Comparative year

In the 2010 Account, water use was not included within the Water accounting statements, but was included within the urban water notes. A change of scope in the 2011 Account has resulted in the inclusion of potable, non–potable and recycled water use within line item 19.4 Delivery to urban water system users.