Sydney
11.9 Delivery of water to urban water system under inter-region agreement

Supply from the Fish River Water Supply Scheme (FRWSS), which is an inter-basin transfer, during the 2010–11 year is shown in the following table. The supply was made through Duckmaloi Water Treatment Plant.

Water supply from the FRWSS is based on water supply agreements between NSW State Water Corporation and its customers, including Lithgow City Council and Delta Electricity. NSW State Water Corporation has a 'deemed' water management licence for the FRWSS and operates it in collaboration with the Customer Council, of which Lithgow City Council and Delta Electricity are members.

Volumes are calculated from annual allocation, carry-over volume and metered supply data. Metered supply data are based on flow measurements by NSW State Water Corporation using ABB Magflow meters.

• Delta Electricity: nil.
• Lithgow City Council: nil.
  

The volume is based on measured data. Estimated uncertainty based on meter accuracy is +/– 2%. Meters are calibrated annually by ABB (meter supplier).

The following table compares the value for the 2009–10 year reported in this account with the corresponding value reported in the 2010 Account.