A water supply disruption emergency can occur due to failures that impact the delivery (quantity) of water, or its quality, particularly potable water for drinking.
Examples of significant water supply disruption in Victoria include:
- the Millennium Drought, thirteen consecutive years of drought between 1997 and 2009 leading to severe water shortages in many areas in 2016-17
- undisinfected water entering the water supply system due to storm damage in August 2020, leading to 88 suburbs being instructed not to use water, unless boiled.
The Managing Extreme Water Shortage in Victoria: Lessons from the Millennium Drought report documented the experiences of water managers across Victoria during the drought.