Plumbco offers the most reliable and cost-effective backflow testing Perth homes and business trust and depend on.

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). Back siphonage can occur when there is a burst or ruptured water main, or due to excessive demand during fire-fighting operations or other periods of high demand.

Backflow can also occur if a water pump, such as a bore pump, is cross connected to the internal water plumbing system, and is pumping bore water at a higher pressure than the water mains pressure (back pressure).

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 when there is an overpressure on the private property side or a sudden drop in water mains pressure.

This is why it is critical to get the best backflow testing Perth and the rest of Western Australia has to offer. Book your appointment today!

Plumbco provides the highest quality backflow testing device installation Perth and the rest of Western Australia has to offer.

Who can install a backflow prevention device?

Only a fully licenced plumbing contractor like Plumbco may install backflow prevention devices.

When should I install a backflow prevention device?

The following building application types will be assessed for backflow risk:

• >> New developments
• >> Redevelopments of existing facilities
• >> Changes to any existing water service
• >> Additions and alterations (includes where no water service applications are included, applicable only if the property has existing meters)
• >> Multiple residence and/or commercial (includes where no water service applications are included, applicable only if the property has existing meters)
• >> Any applications that involve a fire service
• >> Any applications where the minimum water service size applied for is greater than 25mm in size (except fire services, where the backflow advice applies regardless of the service size)

At the time of approval, the applicant will be informed of the property’s initial backflow risk rating. Site-specific activity will determine the final level of backflow risk and for certain commercial and industrial processes may default the property risk rating to high

New Water Corporation meters 20mm and 25mm in size come with integral dual check valves incorporated within them. This means low risk properties such as residential only; with only metered services (excluding fire services) of this size already have sufficient backflow prevention. Fire services are medium rated regardless of size.

Get the best backflow testing device installation. Book your appointment with Plumbco today!