Wingecarribee Shire Council has a responsibility to provide safe drinking water to the community. To reduce the risk of contamination to our drinking water supply, we have implemented a Backflow Prevention Policy.
It is the responsibility of all property owners to ensure that they do not impact the water supply with any contaminated water from their property.
Through working together with our customers, we can better protect public health and the environment.
For more information on our Backflow Prevention Policy, please click here.
The water supply system is designed so the water flows out of your tap under pressure in one direction. Backflow is when water flows backwards into the water supply. This could possibly occur if:
- There is a sudden drop in pressure, e.g. from a burst pipe inside or outside the property.
- Water pressure in the main is lower than at the property (e.g. pump on site).
To prevent this from occurring, backflow prevention devices are installed to stop the water flowing back into the water supply system. There are different types of devices available with varying elements to prevent water flowing backwards.
Example of Backflow Prevention Device
What is a cross-connection?
A cross-connection is any connection between the water supply and a source of potential contamination. This could be from a faulty plumbing fixture, pool, storage tank, that when used, might enter the drinking water supply.
An example would be to use a hose to clean a grease arrestor, if there is a sudden drop in water pressure (e.g. due to a water mains break) this could siphon the contaminated water into your water pipes and therefore, the drinking water supply.
Which properties require backflow prevention?
Properties identified as having a potential backflow risk (e.g., commercial, industrial or farmland) will require a backflow prevention device to be installed. This is determined by the potential contaminants on the property and the level of risk or hazard they pose to the drinking water supply.
We will determine and consult with the property owner the risk level for the hazards or potential contaminants on the property. We will also advise on the most suitable backflow prevention device required to be installed.