Got a Plumbing Emergency? Call us now: 0437 922 889



Got a Plumbing Emergency? Call us now: 0437 922 889

Got a Plumbing Emergency? Call us now: 0437 922 889


Backflow Testing

Backflow Testing & Prevention

JH Plumbing & Gas are experts in Backflow testing. We also do Certification, Installation & Maintenance of Backflow prevention devices. Your professional backflow plumber will submit the completed test report to the relevant water authority or council on your behalf.

Backflow Testing & Prevention

All backflow prevention devices must have annual testing; this includes RPZ Valves, Backflow Prevention Devices and Dual Check Valves.

  • Potential sources of water contamination include:
    Air-conditioning units
  • Chemical injection areas
  • Fire hose reels (FHR)
  • Irrigation
  • Painting booths
  • Ponds / dams
  • Swimming pools
  • Vehicle / bin-washing bays
  • Vehicle-maintenance pits


Backflow Prevention Devices require annual testing by a licensed plumbers. The backflow testing we provide ensures the device is operating correctly, if there is a faulty a number of problems may occur:

  • The device may not prevent contamination from entering the drinkable water supply.
  • You may notice reduced water pressure supplying your property.
  • There may be leaking and waste water causing an excess water bill, which we can provide a “Form 4” allowing you to claim some of the water bill back.



JH Plumbing & Gas are backflow prevention accredited and are fully licensed plumber. Simply call us and we will book you in. Once we have done the backflow testing we will send the completed inspection report to the local council and give you a copy for your records.

For the sake of your health and the health of your family, it’s important to make sure the water you drink is clean. Backflow testing is about ensuring that it is. “Backflow” occurs when the water in your home (or local area) begins to flow in reverse. It’s a serious problem because it can cause dirty, contaminated water to infiltrate clean potable water.

If you’re in the Toowoomba region, JH Plumbing & Gas can carry out testing on your property in order to ensure your water is sanitary and safe to drink


Did you know the water in your home is kept to a standard pressure in order to allow smooth movement from one area of the house to another, whether it’s the kitchen, the bathroom or the shower? If something goes wrong and interferes with this process, like a pipe that freezes or bursts, backflow is often the result. Get started today. Check out the contact details below and get in touch with one of our friendly customer service representatives in order to get your backflow tested by the pros.

Some of the most common potential courses of backflow in your home include:


This is one of the main causes of backflow. Sometimes inefficient vents or outlets in heaters cause the pressure to rise while the water is heating up. This pushes the water in the wrong direction.  


This is another one of backflow’s main causes and it frequently occurs in sinks and toilets. It occurs when the water pressure drops, becoming lower than the external pressure. This can happen when there is a stoppage in the water supply for any reason.


When the pipes that carry water from your home to the water system experience damage (even normal, age-related wear and tear) backflow can be the unfortunate result.


There are times when the issue isn’t with your own plumbing but with the local area. This is a more difficult situation to resolve and requires cooperation from your local authorities. However, JH Plumbing can still assist you with your personal backflow issues.

There are some common potential causes of backflow in your water system including:

  • Swimming pools and ornamental ponds
  • Irrigation systems
  • Fire hose reels
  • Vehicle maintenance pits

Yes. We can install and repair all kinds of backflow prevention devices including all major brands such as Ames, Caleffi, Conbraco (Apollo), Febco, Flomatic, Tyco, Wilkins, Watts and Valvtec, and more.

Just about every property that isn’t residential housing needs backflow testing, for example:Just about every property that isn’t residential housing needs backflow testing, for example:
 Botanic gardens
 Car and plant-washing facilities
 Caravan parks
 Club houses for sports
 Day care centres and kindergartens
 Dry-cleaners and laundries
 Hospitals and funeral parlours
 Medical and dental surgeries
 Motels and unit complexes
 Pest control and water-carrying vehicles
 Retail & Shops
 Vehicle-repair workshops

There are a couple of steps you can take to potentially prevent backflow. One is to leave an air gap (i.e. an empty space) between implements such as valves and faucets and any place that water may have a chance to collect. Another is to use a backflow prevention device such as a valve at any particular location in your plumbing system that has a chance of being impacted by contaminated water.

While backflow prevention devices can be very useful and effective, they’re unfortunately not 100% guaranteed to prevent backflow. You may still require the services of JH Plumbing. Luckily we’re professionals in this industry and know exactly what we’re doing and how to fix your backflow problems.

At JH Plumbing, we’ll get your backflow issues sorted and get you and your family back to enjoying clean drinking water in no time.

We pride ourselves on being Toowoomba’s plumbing professionals. Backflow is just one area that we can assist with among a range of others. It’s essential to have professionals in your local area that you can trust and here at JH Plumbing, we aim to fulfill that role for the people of Toowoomba.

Even if you haven’t seen any evidence of a problem with your drinking water, it’s important to get the backflow tested regularly. That’s where Jh Plumbing fits into the picture. Give us a call and book a time. We’ll soon come around to your home or business and perform a backflow test to make sure that your water is heading in the right direction. We can install or repair backflow devices, identify any present or potential further issues and make sure your water supply is thoroughly drinkable. We have the knowledge, the training, the techniques, and the skills to carry out proper backflow testing for your property. And we won’t make you pay through the nose for doing it either.

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