A: This process is called ‘flushing’ and it is an essential management tool used by water utilities. Delivering fresh, clean water that is a food grade product is a complex undertaking, and one we don’t often consider when we turn on a tap.
On its path to your home, occasionally our water quality detectors pick up that the chlorine levels in the water have dropped. This has serious implications for water hygiene. In other instances, sometimes the mains that carry the water to you break and the water becomes contaminated. This can also cause water quality and hygiene issues.
The way we deal with this is by flushing the dirty water out of the pipes and drawing chlorine through the pipework to ensure your water will meet the Australian Drinking Water Guidelines. We undertake this task as a requirement of our Drinking Water Management Plan.
During water restrictions, we make every possible effort to reduce the amount of water we need to flush while still ensuring your water quality meets the required hygiene standard. It's not economical to capture the water we flush for reuse, because the cost of providing the special equipment and transporting the water, along with the time it would take, is prohibitive.