Question 1

What is backflow testing?

Accepted Answer

Backflow testing is a process of checking the water pressure in a building's water supply to ensure that it is strong enough to push water up and out of the building, instead of allowing it to flow back down into the water supply. Tests involve using valves on a backflow testing device.

Backflow can potentially contaminate a building's potable water supply with harmful bacteria, chemicals, or other pollutants, so it's important to have regular backflow testing to ensure the safety of the residents and staff.

Question 2

Does every house have a backflow preventer?

Accepted Answer

Yes, in Western Australia, Water Corporation requires every property to have an approved backflow prevention device installed. The backflow device requires installation by a licensed plumber and must be registered. Due to the serious risk contaminated water has to health, there is legislation in place that also mandates backflow prevention devices and testing.

Question 3

Is backflow prevention testing necessary?

Accepted Answer

Commercial and Industrial properties that have Restricted Pressure Zone Devices (RPZD) installed, require annual testing. This is a mandatory requirement.

Question 4

How do I know if my house has a backflow valve?

Accepted Answer

If your house is in Perth, it likely has a backflow prevention device installed. To check that yours is working properly, you should call a licensed plumber to carry out a backflow inspection.

Question 5

What causes backflow?

Accepted Answer

There are two main causes of backflow. These are known as backsiphonage and backpressure. Backpressure Backpressure is a situation that can arise when water from a non-potable water supply becomes greater than the pressure of your main water supply. This can cause dirty or polluted water to flow back into your potable water system and contaminate it. Backpressure can also be caused by a blocked drain, which will prevent normal drainage and create excessive backpressure. Backsiphonage Backsiphonage is the process of water being forced back up into a home or building's water supply line due to higher water pressure in the main supply line. This can happen when there is a break in the main supply line, or when there is an excessive demand on the system (such as during a fire). Backsiphonage can contaminate the water supply with bacteria and other pollutants and can cause significant damage to plumbing fixtures and appliances.

Question 6

What backflow device do I need for my property?

Accepted Answer

Backflow devices are chosen based on a property’s risk rating for potential contamination. Once our plumber has identified your backflow risk rating, a backflow prevention system suitable for your property will be installed.

Backflow Prevention &#038; Inspection Perth

Backflow Prevention & Inspection Perth