Backflow is probably not something most property owners think about until they receive a testing notice, discover a problem with an existing device, or start planning building work. At that point, a common question is: do I actually need a specialist backflow plumber, or can a regular plumber handle it?
The answer depends on the property, its water connections, the level of backflow risk and the type of device installed. Here’s what to know before arranging backflow work in Sydney.
What Does a Backflow Plumber Actually Do?
A backflow-accredited plumber deals with the specialist assessment and testing work needed to protect the drinking water supply from unintended reverse flow.
This can include assessing a property’s hazard rating, determining the appropriate backflow protection, testing applicable devices and identifying problems that may require attention. Sydney Water requires an accredited backflow plumber to assess a site’s hazard rating, while relevant medium- and high-hazard devices must be tested by a backflow-accredited plumber.
That’s why simply booking a general plumbing service isn’t always enough when backflow compliance is involved.
When Might You Need a Backflow Plumber in Sydney?
There are several situations where specialist backflow assistance may be required.
You already have a testable backflow device.
If your property has a testable containment device, it may need regular testing by a backflow-accredited plumber. Sydney Water keeps a register of applicable devices and sends reminders when annual testing is due.
You’re developing or renovating a property.
Construction and renovation work can introduce additional risks to the water supply. Sydney Water requires water supplies on construction sites to have suitable backflow containment, so it’s worth addressing the requirement before work begins rather than discovering a compliance issue later.
The way your property uses water has changed.
A change in site activities can change the level of risk. For example, a property that begins using water for a different commercial or industrial process may need its hazard rating reassessed. Sydney Water specifically says hazard ratings should be reassessed when site activities change.
You’ve received a Sydney Water notice.
A notice shouldn’t simply be put aside. It may mean an applicable device is due for testing or that a compliance issue needs to be addressed.
How Often Does Backflow Testing Need to Be Done?
This is where a lot of property owners get confused because not every property has identical backflow requirements.
Sydney Water currently requires high- and medium-hazard backflow containment devices to be tested when installed and every year afterwards. The test must be carried out by an appropriately accredited backflow plumber, and the test results must be lodged with Sydney Water within two days. Property owners should also ask for a copy of the report for their records.
So, if you have an annual testing requirement, waiting until the device is overdue isn’t a good strategy. Sydney Water can arrange testing when annual requirements aren’t met, with applicable charges potentially passed on to the property owner.
What If Your Backflow Device Fails the Test?
A failed test doesn’t automatically mean your entire plumbing system needs replacing.
The first step is to determine why the device failed. Depending on its condition and the issue identified, it may need servicing, repair or replacement. Once the necessary work has been completed, the device may need to be tested again and the appropriate documentation submitted.
The important thing is not to ignore a failed result. A backflow prevention device is there to protect the water supply, so a fault should be dealt with promptly and by someone qualified to perform the required work.
Do You Need a Backflow-Accredited Plumber or a Regular Plumber?
This is an important distinction.
A licensed plumber can carry out plumbing installation work within their licensing requirements, including installing the appropriate backflow device.
A backflow-accredited plumber has the additional accreditation needed for relevant backflow assessment and testing work. Sydney Water states that only licensed plumbers with backflow containment prevention accreditation can inspect, commission and test medium- and high-hazard backflow devices.
If you’re arranging a backflow test, therefore, don’t just ask whether someone is a plumber. Ask whether they hold the relevant backflow accreditation.
What Should You Ask Before Booking?
Before arranging a backflow service, it helps to ask a few straightforward questions:
- Is the plumber licensed in NSW?
- Do they hold the relevant backflow accreditation?
- Can they test the device installed at your property?
- Will the required test report be lodged with Sydney Water?
- If the device fails, can they explain what needs to happen next?
You can also check Sydney Water’s online register when looking for an accredited backflow plumber in your area.
Still Unsure What Your Property Needs?
If you’re not sure whether your property needs backflow testing, assessment or specialist assistance, it’s better to check than make assumptions. Backflow Testing Sydney provides backflow testing services across Greater Sydney, including testing of common devices and Sydney Water test-result lodgement.
If you need specialist help with your property’s requirements, you can speak with a Backflow Plumber Sydney professional and clarify what testing or compliance work is appropriate for your situation.
Frequently Asked Questions
Does every property in Sydney need annual backflow testing?
No. Requirements depend on the property’s hazard rating and the type of backflow device installed. Sydney Water specifically requires annual testing for applicable medium- and high-hazard containment devices.
Can any licensed plumber test a backflow prevention device?
Not necessarily. Relevant medium- and high-hazard backflow devices must be tested by a licensed plumber who also holds the required backflow accreditation.
What happens if a backflow device fails its test?
The device should be assessed to determine the cause of the failure. Depending on the problem, repair or replacement may be required, followed by any necessary retesting and reporting.
