We provide some of the world’s best quality water to our customers.
Our drinking water is clean and safe. It also meets the standards in:
- Victoria's Safe Drinking Water Act 2003
- Safe Drinking Water Regulations 2015
The Australian Drinking Water Guidelines (developed by the National Health and Medical Research Council) provide over 250 guidelines for water utilities to follow. The Guidelines are some of the strictest water quality guidelines in the world.
Melbourne Water is the wholesaler who supplies our drinking water. They are responsible for harvesting, storing and treating water before it arrives in our system.
Our water supply comes from three large reservoirs:
These reservoirs form a part of Melbourne’s overall and well-established catchment and reservoir system.
You can learn more about Melbourne’s water catchments on Melbourne Water’s website.
Plumbing and fittings
We are responsible for the:
- water mains
- water meter that supply water to your property.
Property owners are responsible for the other:
- fittings inside their property.
The installation of plumbing fittings in Victoria is overseen by plumbing regulatory agencies. Always use a licensed plumber when conducting works on your property.
In some instances, metals including copper, lead and nickel can dissolve into drinking water from some plumbing fittings. For more information and good practices for householders refer to enHealth Guidance Statement.
Water quality monitoring and reporting
To maintain high quality water supply, we arrange independent, day-to-day water sampling and testing. Taking place at around 460 supply points throughout our service area.
Each year, over 3,000 microbiological and 800 physical/chemical samples are collected and tested. An independent, specialised laboratory (accredited by the National Association of Testing Authorities) collects and tests on our behalf.
We present the test results in our Annual Drinking Water Quality Report, published annually in mid-October.
View our current Water Quality Report for more information, including more details on common water quality concerns.
Water quality issues
Our customers can expect drinking water that meets regulations that is clear and free from objectionable taste and odour. If you do experience an issue with your drinking water, before you contact Greater Western Water, please read the below frequently asked questions.
If your question is not answered in the FAQs, call us on 13 44 99.