Plumber backflow; Backflow testing Perth; Backflow prevention testing; Backflow services; Backflow testing

An example of water siphonage prevented by backflow prevention devices

Backflow Testing Perth

Our Backflow services include the annual backflow testing of Backflow prevention devices.

What is backflow?

Backflow is a reversal of the normal direction of water flow in a water supply plumbing system. It occurs when the water delivery main is at a lower pressure than the internal plumbing system (back siphonage).  In situations when there is a burst or ruptured water main, or  periods of excessive and high demand, such as during fire-fighting operations, back siphonage can occur.

Backflow can also occur when contaminated water sources are crossed with the potable water supply.  For this reason appliances and services such as dishwashers, bidet sprays and bores, should all have backflow prevention devices installed.

If a property’s drinking water supply is inadvertently connected with a source of pollution, either through a cross connection or simply a hose submerged in a container of liquid, then these pollutants could enter the water supply and pose a very serious health risk.

Why install a backflow prevention device?

Contaminated water can cause health problems or death, therefore obligations  to install a backflow prevention device are legislated.  The Water corporation is responsible for administering the regulations.  They also assess back flow requirements for properties and fire services.

Penalties such as fines and disconnection of services can be imposed for non compliant properties.


Installation and maintenance of backflow prevention device

Edge Plumbing Design is fully licensed to test and maintain you backflow device.

The Water Corporation require annual testing of registered devices. Lodgement of your Backflow Prevention Testing report has never been easier than when completed by Edge Plumbing Design.

All of our tests are completed with a straightforward process online saving you time through the immediate receipt of results by the Water Corporation.

Using the latest equipment and processes our reports are both reliable and accurate.  Should any back flow prevention device maintenance be identified during diagnostics, be assured that our license plumber can deal with it promptly.

Contact us today to book any back flow services and to discuss your backflow prevention strategy.


Many of our customers have remained with us since our beginnings in the 1980s. We attribute this to our honest service and our involvement in our local community.