Sewer spill containmentInvestigate first
32.2%
Contained within five hours
−67.4 percentage pointsvs 2023–24
GREATER WESTERN WATER
Latest service outcomes
Results against the commitments made to customers.
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2024–25 BASELINE ASSESSMENT
Reported water lossesEstimated
100L
Per service connection, per day
+25% reported increasevs 2023–24
Water restorationImproving
92.0%
Unplanned interruptions restored within five hours
+2.8 percentage pointsvs 2023–24
WHERE TO FOCUS
Recommended priorities
01
Restore timely sewer spill containment
Review slow containment and recurring blockage locations.
02
Validate losses and target recurring failures
Confirm the water balance before directing investment.
03
Shorten lengthy water outages
Improve restoration for the customers affected.
Priorities identify what to investigate. Internal asset and incident records are needed to locate repairs.
INSIGHT IN FOCUS
Containment needs attention
32.2%
GWW's five-hour sewer containment result fell from 99.6% in 2023–24.
GWW32.2%
South East Water98.8%
Yarra Valley Water99.6%
Failure frequency is only part of the picture
GWW has fewer water main breaks than the other Melbourne retailers. Slow containment and lengthy incidents deserve separate attention.