Tradie Forms: finish the backflow test report at the device and lodge a clean Form 9 with council before you leave site. These guides help QLD plumbers keep records straight; the same on-site habits apply as we add more Australian trade templates.
You have just tested the reduced pressure zone device on a commercial site, the readings are written on the back of a job card, and the customer wants proof the device passed. In Queensland that proof is the Form 9 backflow report, and it needs to reach the local council within a set window. Get the readings, the device details, and your tester endorsement onto the form correctly and the job is closed. Miss a field or use the wrong version of the form and it comes back to you.
This guide covers what a Queensland backflow test involves, who is allowed to do it, and how to complete and lodge the Form 9 so council accepts it the first time.
If you are writing up a test today, open the guided Queensland Form 9 backflow test report. Browse other QLD plumbing forms or read the QLD plumbing forms list to see where Form 9 sits alongside permit and inspection paperwork.
What a backflow test actually involves
Backflow prevention stops contaminated water flowing back into the drinking supply when pressure drops or reverses. A testable device has test points, and the point of the annual test is to prove the check valves and relief valve still hold pressure the way the device was designed to.
The devices you test and report on a Form 9 include:
Reduced pressure zone devices (RPZD). High hazard protection with two check valves and a relief valve. You record the pressure drop across each check and the opening point of the relief valve.
Double check valve assemblies (DCV). Medium hazard protection where you confirm each check valve holds against back pressure.
Pressure type vacuum breakers. You verify the air inlet opens and the check valve seals at the required pressures.
Registered air gaps and break tanks are also covered by the same registration and reporting system, even though they are physical separation rather than a mechanical valve you gauge. The Form 9 has room for each of these so one report can cover the device arrangement on the site.
Before you take a single reading, the test kit matters. Your gauge needs current calibration, because a report backed by an out of date kit is easy to challenge. Record the test kit serial number and its last verification date on the form so the reading has something to stand on.
Who can test a backflow device in Queensland
Not every licensed plumber can sign a backflow report. Under the Plumbing and Drainage Regulation 2019, testable backflow prevention devices must be tested at least once a year by a licensed plumber who holds a backflow endorsement. The endorsement is the part that authorises you to test and certify these devices, on top of your plumbing licence.
If you are the property owner rather than the tester, your job is to make sure an endorsed tester does the work. The Backflow Prevention Association of Australia keeps a directory of endorsed testers, which is where owners are often pointed when they need someone.
The distinction that catches people out is between doing plumbing work and being endorsed to certify a backflow device. A general plumbing licence lets you install and repair. The backflow endorsement is what lets you put your name to the annual test result. Check that your endorsement is current before you accept the job, not after you have gauged the device.
When testing is due and how devices are registered
Two obligations run in parallel in Queensland, and they land on different people.
The owner registers each testable device with the council and pays the annual fee. Section 102(2) of the Plumbing and Drainage Regulation 2019 puts the registration duty on the owner, and section 101 requires the council to keep a program for registering, maintaining, and testing every backflow device in its area. That registration is what generates the annual reminder and the fee notice.
The endorsed plumber does the test at least once every calendar year and reports the result. The exact date each year is up to the owner and the tester, so long as it happens within the calendar year. Devices on new installations are also tested and reported when they are commissioned, then fall into the annual cycle after that.
Owners who let registration or testing lapse can be fined, so the annual test is not a formality that can drift. When you finish a test, the clock starts on lodging the report.
What the Form 9 report covers
The full name of the form is the Form 9 registration and report on inspection and testing of backflow prevention devices, registered air gaps, and registered break tanks. It is a structured record, and completing it in order keeps the readings tied to the right device.
Working through it, a Form 9 captures:
Description of the land and the owner or occupier. The property the device protects, and the contact who holds the registration. Getting the address and owner details right is what lets council match the report to the registered device.
Test criteria. The level of protection required, the device type, and the type of test being carried out. This sets the pass or fail thresholds for everything that follows.
Device location, mains pressure, and time of test. Where the device sits on the site, the supply pressure, and when you tested. These frame the readings so anyone reviewing the report can see the conditions.
The device and its test results. The main device readings, and where fitted, a bypass device, a pressure type vacuum breaker, or a registered air gap or break tank measurement. Each result needs to be complete, not left blank because the value looked obvious on the day.
Test kit and authorised tester. Your identity and endorsement, plus the test kit serial number and last verification date. This is the evidence layer that backs the numbers.
Declaration. Your signature, the result, and the date. The declaration is you standing behind the test, so it should only go on once the readings are in and correct.
Lodging the Form 9 with council
Once the test is done, the report has to reach the council within 10 business days of the inspection or test. Most Queensland councils accept the Form 9 through an online portal or by email, and some ask for the device registration number so it lands against the right record. Brisbane City Council, for example, takes the form through its portal or by email to its backflow inbox.
There is a second lodgement that is easy to forget. The licensed plumber lodges a Form 9 with the council and a Form 4 with the Queensland Building and Construction Commission for the notifiable work. Some councils ask you to include a copy of the Form 4 with the Form 9 for their records, so keep both together when you close the job.
Use the current form. Queensland amended the Form 9 on 15 May 2024, and councils have only accepted the amended version since 31 August 2024. An old template pulled from a saved folder is one of the simpler ways to have a report knocked back, so make sure you are working from the current version on the Business Queensland site.
Common backflow testing report mistakes
These are the ones that turn a passed test into a return trip or a rejected report.
Using the superseded form. The pre-2024 Form 9 is no longer accepted. If your template predates the amendment, replace it.
Incomplete readings. A blank pressure drop or relief valve figure makes the report unverifiable. Every applicable field on the tested device needs a value.
An out of date test kit. If the gauge calibration has lapsed, the readings carry no weight. Record the last verification date and keep the kit current.
Wrong protection level or device type. Nominating the wrong hazard level changes the pass thresholds. Confirm the required protection for the site before you record results against it.
Late lodgement. Ten business days moves quickly when the paperwork sits in the ute. Lodging the report at the device closes the job while the detail is fresh.
Most of these come down to the same thing. The report is written up away from the device, from memory or a scrap of paper, hours or days later. The fix is to complete it on site while the readings and the device are in front of you.
Finish the Form 9 on site
Tradie Forms turns the Form 9 into guided sections that follow the order of the official report. You nominate the protection level, device type, and test type, record the readings for the main device and any bypass, vacuum breaker, air gap, or break tank, and enter the test kit and tester details as you go.
Your business and licence details are saved and reused, so the tester and contractor fields are not retyped on every job. The form flags missing fields before you download, which is what catches the blank reading or the empty test kit date before council does. You preview the entries mapped onto the official Form 9 PDF layout, then download the finished report to lodge with council and hand the owner their copy.
Tradie Forms maps your entries onto the official layout. The endorsed tester still checks the work, the readings, and the exported PDF before it goes to council.
Start the Queensland Form 9 backflow test report at the device, or browse more QLD plumbing forms for the rest of your Queensland paperwork.
Official references
Check the Business Queensland plumbing and drainage forms and templates page for the current Form 9, Brisbane City Council backflow prevention and testing for lodgement, and the Plumbing and Drainage Regulation 2019 for the registration and testing requirements. Council processes vary, so confirm the local lodgement method and your current backflow endorsement before you certify a device.