9.9 Discharge from urban water system

Supporting information

The volume recognised in the water accounting statements (114 ML) represents the volume of wastewater discharged from the Katherine Wastewater Treatment Pond to the Katherine River during the 2011–12 year.

Quantification approach

Data source

Operational database.

Provided by

Power and Water Corporation.


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

Assumptions, limitations, caveats and approximations


Uncertainty information

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