
Backflow Prevention Devices and Inspections
Backflow is the reversal flow of water in your pipes. If Power and Water’s water supply system drops pressure it can cause the flows direction to change and become contaminated.
A severe blackflow incident can put you and your families health, and lives, at risk.
Backflow Testing and Services
Tap & Drain Doctor NT are backflow accredited plumbers and can assess your property to define the hazard level. Our devices are tested and maintained annually to ensure that there will no contamination.
There are a number of approved devices available, including:
- A break tank with a registered air gap
- Reduced Pressure Zone Device (RPZD)
- Double Check Valve (DCV)
- Dual Check Valve (DuCV)
We will perform all works start to finish and provide documentation directly to power and water. If works do not pass, we will provide a hazard test report and quote on further repairs.
What Can Cause a Blockflow of Water:

❌ A water supply systems pressure dropping due to a break.
❌ An excess of water pumped from the water main causing the pressure to drop.
❌ A connected pump that causes a reverse flow.
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Devices to Prevent Water Blackflow
If your property does not have a backflow prevention device installed, we can come to site and provide a free quote to get the system to current standards.
We will then put you on a yearly maintenance schedule where our office will contact you every year to schedule your backflow test as per Power and Water requirements.
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Why Choose Us To Fix Your Burst Pipes?

Up Front Pricing
Know exactly what you're paying for and how much it is.
Fast & Friendly Service
We arrive with a smile so we can leave you with a smile.
On-Time Service
We won't give you a vague time slot, so you can plan your day.
Satisfaction Guaranteed
We will get the job done right.
Highly Trained Plumbers
Our plumbers are experienced experts that can tackle any job.
Available 24 / 7
We're ready for any plumbing emergencies you may have.
Territory Owned & Operated
We've been serving the territory for over 17 years.