Adelaide
11.4 Wastewater collected

This volume reported (92,024 ML) represents wastewater inflow into the Adelaide region's wastewater treatment plants (WWTPs). This volume included increases from wastewater discharge to sewer by consumers and any groundwater or stormwater ingress into the system.

The metered inflow to each WWTP within the Adelaide region was supplied from WWTP records held by SA Water. Most metered flows were manually read and recorded by plant operators. Inflows for each WWTP were aggregated.

• This does not include wastewater collected for individual community wastewater management systems.
  
• This includes wastewater collected from outside of the Adelaide region and delivered to the Bird-in-Hand WWTP. Data on the breakdown between wastewater collected within and outside the region were not available. However, the volume from outside the region is assumed to be negligible.

This volume is metered. The uncertainty is estimated to be +/– 10%.

This line item was not reported in the 2010 Account. In the 2010 Account, the urban users were included in the regions definition. In the Account 2011, the urban users were excluded from the regions definition. This change was made to allow reporting, in the water accounting statements, on urban water use (as a water asset decrease) and wastewater collection (as a water asset increase), as both were considered useful information to the National Water Account users. The restated comparative year volume is 87,771 ML.