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National Water Account 2018

Sydney: Statement of Changes in Water Assets and Water Liabilities

for the year ended 30 June 2018

  • Water availability decreased by about 24% during 2017–18. This follows a small decrease in water availability the previous year.
  • The change in water available is represented by the change in net water assets.

 

SYD_KeyMessage 

 

The Statement of Changes in Water Assets and Water Liabilities is provided in the table below. The statement presents the changes in water assets and water liabilities that occurred during the year, including accrual transactions (e.g. allocations and forfeitures) and actual water flows, both natural and engineered.

 

 

Select comparative year

 2018 ML2017 ML2016 ML2015 ML2014 ML2013 ML
Water asset increases
Surface water increases1,429,5694,663,0255,132,4395,490,2542,152,5935,187,641
Precipitation80,591173,155139,962155,84891,668134,391
Runoff1,280,6124,357,3644,909,5295,239,5111,986,9284,968,033
Discharge: user81828082,4854,860
Claims: inter-region11,83411,83411,83411,83411,83411,834
Discharge: wastewater*55,21777,92471,11483,05359,678**68,523
Flood return1,23441,920
 
Urban water system increases1,502,0961,602,5701,588,371**1,587,597**1,522,411**1,549,486
Wastewater collected461,542562,042547,783547,009480,243507,638
Delivery: desalinated water000000
Claims: surface water*1,040,5541,040,5281,040,5881,040,5881,040,5881,040,588
 
Total water asset increases2,931,6656,265,595 6,720,810 7,077,851 3,675,0046,737,127
Water liability decreases
Surface water liability decreases578,118617,633 624,368 632,246 600,042 620,289
Adjustment and forfeiture: individual users144,738140,849138,889 134,553 116,485 122,416
Adjustment and forfeiture: urban water system*433,380476,784485,479 497,693 483,557 497,873
 
Total water liability decreases578,118617,633 624,368 632,246 600,042620,289
Water asset decreases
Surface water decreases1,440,8304,383,810 4,226,406 4,611,953 1,930,582 4,411,383
Evaporation179,549189,060 150,271 166,963 168,947 141,766
Outflow551,7663,888,675 4,036,219 4,403,694 1,724,770 4,232,133
Diversion: statutory rights32,25732,257 32,530 32,530 32,530 32,529
Leakage: groundwater663,398 – – – –
Claims: inter-region2,6198,122 7,386 8,766 4,335 4,955
Overbank flow11,241265,696 – – – –
 
Urban water system decreases1,485,0331,594,586 1,573,155 **1,575,132 **1,506,155 **1,539,539
Leakage: groundwater47,26241,670 37,665 37,210 40,390 44,889
Supply system delivery: urban users532,632502,178 491,281 478,372487,104 495,132
Recycled water delivery: urban users14,39413,596 17,502 20,515 22,018 –
Wastewater and recycled water discharge: surface water*55,21777,924 71,114 83,053 59,678 –
Discharge: sea384,874456,190 432,491 443,546 394,499 402,455
Claims: surface water*433,380476,784485,479 497,693 483,557 497,873
Other supply system decreases12,03611,076 10,113 14,743 15,153 30,657
Discharge: landscape094 – – – –
Other wastewater and recycled water system decreases5,23815,074 27,510 0 3,756 –
 
Total water asset decreases2,925,8635,978,396 5,799,5616,187,085 3,436,737 5,950,922
Water liability increases
Surface water liability increases1,199,9431,199,922 1,199,978 1,200,068 1,200,0501,200,050
Allocation: individual users159,389159,394159,390 159,480 159,462 159,462
Allocation: urban water system*
1,040,5541,040,528 1,040,588 1,040,588 1,040,588 1,040,588
 
Total water liability increases1,199,9431,199,922 1,199,978 1,200,068 1,200,050 1,200,050
 
Unaccounted-for difference(30,138)164,564 (189,050) **(46,048)**(88,573) **(148,582)
 
 
Change in net water assets      
Change in net surface water assets(646,161)(130,526) 156,589 **276,896(450,314) 57,862
Change in net urban water assets00 0 0 0 0
Total change in net water assets(646,161)(130,526) 156,589 276,896 (450,314)57,862
 

* between-store flows and claims 

** different to published volume in historical accounts (see Governance section for more information)