Non-residential customers account for approximately 30 per cent of total demand for water in Melbourne.  Victoria’s non-residential sector - which includes industrial, commercial and institutional customers - is becoming increasingly water efficient.

Melbourne’s non-residential customers have made significant water savings, reducing their per capita daily water consumption by about 41 per cent per capita compared to the 1990s averages. This is in line with Melbourne’s overall reduction of about 38 per cent compared to the 1990s averages.

The WaterMAP program includes all non-residential customers across Victoria consuming more than 10 million litres per annum. In the 2008/09 year, waterMAP customers across the State saved approximately 5 billion litres of water. Combined with the 10 billion litres of water savings made over 2007/08, waterMAP customers have saved around 15 billion litres of water since the program’s inception in 2007.

Melbourne's businesses of all sizes are encouraged to participate in Support 155 - a program which aims to help business save water through water use assessments, ideas for working with employees to save water and other assistance. Over 3,600 businesses have signed up for the Support 155 program.

Victoria’s non-residential water users are also subject to drought response measures similar to residential water users, including Stage 1-4 restrictions. In some instances, non-residential users can have their water use restricted entirely (for example, in the case of some car washing and turf growing businesses).