Ord
9.9 Discharge from urban water system

Supporting Information

The volume recognised in the water accounting statements (591 ML) represents the discharge of wastewater from Wyndham Wastewater Treatment Plant to the King River as well as from Kununurra Wastewater Treatment Plant to the M1 Channel.

A breakdown of the source of wastewater is provided in the table below.

Sources of wastewater in the Ord region

Source of Wastewater

Volume (ML)

201011

Volume (ML)

200910

Wyndham Wastewater Treatment Plant

62

77

Kununurra Wastewater Treatment Plant

529

Total

591

77

Data for Kununurra Wastewater Treatment Plant were not reported in the 2010 Account.

 

Quantification Approach

Data Source

Water Corporation (WA) Operational Data Storage System database.

Provided by

Water Corporation (WA).

Method

The volume of treated wastewater is based on measured discharge data collected by flow meters installed at the treatment plants.

Assumptions, Limitations, Caveats and Approximations

Nil.

Uncertainty Information

Derived from measured data. Uncertainty range +/– 10%.

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.

Comparative information from the 2010 Account for line item 9.9

2011 Account line item

2010 Account line item

Value reported in the 2010 Account (ML)

Value reported in the 2011 Account (ML)

Additional information

9.9 Discharge from urban water system

13.7.1 Discharge of urban wastewater to connected surface water

77

77

Change in line item name and number

 The 2010 Account did not report on wastewater discharge from the Kununurra Wastewater Treatment Plant.