Each year we carry out routine cleaning of water main networks to ensure we continue to deliver safe drinking water and high-quality services to our customers, and maintain our supply network infrastructure.
Upcoming water mains cleaning programs
How we clean your mains
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Air Scouring
Air scouring is a cleaning technique which uses a mix of compressed air and water forced into the water main, removing the sediment from the pipes.
Click this tile to read more about our air scouring program for May 2024, when we'll be cleaning mains in Kennington, Strathdale, Quarry Hill, Flora Hill and Cohuna.
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Free Chlorination
Free chlorination is a traditional water-main flushing method using chloramines or chlorine only, the primary disinfectants used in public water systems.
Why mains need cleaning
The ongoing maintenance of our water and sewer network:
- helps prevent blockages
- improves the efficiency and reliability of our service
- ensures we deliver safe drinking water and meet Australian Drinking Water Guideline.
- helps prevent issues such as sewer overflows or leaks.
Once the program is completed it is hoped that turbidity indicators and chlorine residuals will improve in the network.