Adelaide

                                                                                                   

20.4.1 Wastewater discharge to connected surface water

                             

Supporting information   


The volume reported in the water accounting statements (2,097 ML) represents discharge from several wastewater treatment plants (WWTPs) operated by SA Water into rivers. The breakdown of wastewater discharge by WWTP is presented in the table below.

Wastewater treatment plant

Discharge (ML)

Angaston

40

Bird-in-Hand

263

Hahndorf

316

Heathfield

687

Victor Harbor

791

Total

2,097

 

Quantification approach   


Data source

SA Water: WWTP records.

 

Data provider

SA Water.

 

Method

Several WWTPs discharge treated wastewater to rivers within the Adelaide region, specifically:

  • Hahndorf
  • Bird-in-Hand
  • Angaston
  • Heathfield
  • Victor Harbor.

The metered discharge for 2009–10 from these WWTPs was supplied from WWTP records held by SA Water. These metered flows are manually read and recorded by plant operators.

 

Uncertainty

Uncertainty is +/-10% based on meter calibrations.

 

Assumptions, approximations and caveats/limitations

  • Treated effluent from the Victor Harbor WWTP was discharged to Hindmarsh Reservoir for summer storage and then released to Inman River in winter months.
  • The line item does not include any discharge from community waste management schemes, including the Port Elliot WWTP, which are managed by local councils.