Keeping water mains clean
From time to time, we use a water mains cleaning method known as ice pigging. This technique uses an ice and water slurry mix, sent through the pipes to help remove unwanted debris and sediment. This is a gentle method of water mains cleaning that doesn’t damage the pipes. It’s also eco-friendly and minimises water waste. The ice mixture is pushed through the system via water hydrants, before being collected by trucks to be disposed of.
Will my water supply be interrupted?
Yes, if your area is scheduled to be cleaned, resulting in a water supply interruption for your property, you will receive a notification telling you what day and time water mains cleaning will start in your street. Sometimes we’re able to carry out water mains cleaning without impacting your water supply, in which case you won’t receive a direct notification.
How does this affect you?
When we have conducted ice pigging in your area, you may temporarily experience dirty or cloudy looking water from your tap. This is completely normal and can be removed by running the tap at the front of your property for a few minutes until the water is clear. Your water is safe to drink throughout the water mains cleaning process.
If your water supply does not clear after five minutes, please call us on 1300 361 644.
Why 'pigging'?
Traditional pipe-cleaning involved sending a solid tool—originally made of straw, wire, and leather—through a pipeline to scrape away debris. Early versions made a squealing sound as they travelled, earning them the nickname "pigs".