Backflow Prevention Plumbers

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Our Services

Residential Plumbing Hot Water Gas Fitters Plumber Commercial Plumbing Commercial Gas Fitting Backflow Prevention Thermostatic Mixing Valves Storm Water Management Fire Hydrant & Hose Reels Drainage Plumbers

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Contact us today for a free, no-obligation quote on your plumbing needs.

  • 1300 793 962
  • 299E Morayfield Rd, Morayfield QLD 4506
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Yearly Backflow Prevention Device Testing

If your property has a backflow prevention device, whether it’s an RPZ valve, a registered airgap, or a thermostatic mixing valve — Queensland regulations require it to be tested every 12 months by an endorsed, licensed plumber. Creek to Coast Plumbing holds the correct endorsements to carry out your annual backflow testing, submit compliance reports to your local authority, and handle any repairs or replacements on the spot.
We service residential homes, commercial properties, strata buildings, and industrial facilities across Moreton Bay, North Brisbane, and Caboolture. One call and we’ll sort your testing schedule, paperwork, and certification, so you stay compliant without the headache.

What Is Backflow and Why Does It Matter?

Backflow happens when water in a plumbing system reverses direction — either from a sudden pressure drop or when the pressure on your side of the meter exceeds the mains supply. When that happens, contaminated water can be drawn back into the clean water supply, introducing bacteria, chemicals, and other pollutants.
Backflow prevention devices are mechanical valves installed at key points in your plumbing to stop this from happening. They’re required on properties with irrigation systems, fire sprinkler systems, commercial kitchens, bidet installations, car washes, hospitals, and anywhere else contamination risk exists.

Types of Backflow Prevention Devices We Test & Install

The type of device required depends on the hazard level associated with your property or installation. Our backflow-endorsed plumbers install, test, and certify all major device types:

  • Atmospheric Vacuum Breaker (AVB): A simple, cost-effective device commonly used in residential irrigation. Uses an air inlet valve to break the siphon and prevent reverse flow.
  • Pressure Vacuum Breaker (PVB): Used in moderate-risk applications. Installed above ground, combining a spring-loaded check valve and air inlet valve..
  • Double Check Valve Assembly (DCVA): Two independently operating check valves — suitable for commercial and industrial settings where higher protection is needed.
  • Reduced Pressure Zone (RPZ) Assembly: The most reliable device for high-hazard situations, using check valves and a relief valve for maximum protection.
  • Thermostatic Mixing Valves (TMV): Required in aged care, healthcare, and childcare settings. Must be tested annually to maintain compliance.
  • Registered Airgap: A physical gap between the water supply outlet and the receiving vessel — simple and reliable for specific applications.

To ensure the continued effectiveness of a backflow prevention device, yearly backflow prevention device testing and maintenance are crucial. These devices should be tested annually by a certified backflow prevention specialist to verify that they are functioning correctly and in compliance with local regulations.

Skilled Plumbers

Our licensed plumbers bring years of experience, ensuring reliable workmanship and dependable results on every plumbing job.

Quality Materials

We only use trusted, high-quality parts and fittings to guarantee lasting performance and long-term value for your plumbing system.

Modern Equipment

With advanced tools and proven methods, our team delivers efficient solutions for homes, businesses, and rental properties.

Plumbing Problems at Home or Work?

Let our licensed plumbers handle it with fast, reliable, and affordable solutions that protect your property, your comfort, and your peace of mind—today and for years to come.

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Roca Bidet Seat

Annual Backflow Testing What’s Involved?

Annual testing is a legal requirement under Queensland plumbing regulations. Our service vehicles carry calibrated testing equipment — calibrated yearly as required — so we complete accurate testing without delays.
During your annual test, our technician will:

  • Inspect each section of the device for wear, damage, or deterioration
  • Test pressures throughout the device
  • Check all seals, valves, and components for correct function
  • Carry out any necessary repairs or part replacements on the spot
  • Provide compliance certification and submit reports to your local authority on your behalf

Once testing is complete, we provide all documentation needed for your renewal paperwork, no chasing us up required.

Backflow Testing for Bidet Installations

Bidet seats and bidet trigger sprayers are classified as high-hazard backflow risk under Australian plumbing standards. A correctly rated backflow prevention device must be installed, and tested annually, whenever a bidet is connected to your plumbing.
Creek to Coast supplies and installs a full range of bidet seats, including the Roca Multiclean and Roca Multiclean Premium.
Our backflow-endorsed plumbers ensure the correct device is fitted at installation and can schedule your annual compliance testing from there.

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Our Backflow Prevention Services

  • Device Testing & Certification: Annual testing by backflow-endorsed plumbers, with compliance certification and authority reporting included.
  • Device Installation: Correct device for your property, use case, and hazard level — residential, commercial, and industrial.
  • Device Repairs & Replacements: Only a backflow-endorsed plumber can legally repair a backflow device. Most repairs completed in a single visit.
  • Testing Schedule Management: We track your annual testing dates and contact you when it’s due.
  • TMV Testing: For aged care, childcare, and healthcare facilities in line with AS 4032.1.
  • Airgap Testing & Registration: Testing and registration of airgap installations..

Why Choose Creek to Coast?

  • Backflow-endorsed and QBCC licensed: Licence No. 1199436
  • Gas Licence L40747
  • Members of the Master Plumbers Association of Queensland
  • Fully stocked vehicles with calibrated testing equipment
  • We submit compliance reports to your local authority on your behalf
  • Available 24 hours a day for emergency plumbing
  • Serving Moreton Bay, North Brisbane & Caboolture since 2012
  • Winner: Best Plumbing in Moreton Bay, Quality Business Awards 2025
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Plumbing Problems at Home or Work?

Let our licensed plumbers handle it with fast, reliable, and affordable solutions that protect your property, your comfort, and your peace of mind—today and for years to come.

1300 793 962 Book Online

Get In Touch With Us

Have a plumbing problem or need a quote? Fill out the form below and our friendly team will get back to you quickly.
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How We Handle Your Plumbing Enquiry

Plumbing problems shouldn’t be a hassle. Our team responds quickly with clear communication, reliable solutions, and quality service from the very first call.

Step 1: Book Your Job

Call us or submit your booking online. We’ll ask for a few details and arrange the best time to attend

Step 2: Confirmed ETA

You’ll receive a confirmation with your technician’s name, arrival window, and a live update when we’re on the way.

Step 3: On-Site Diagnosis

We arrive on time, assess the issue, and provide you with an upfront, fixed-price quote before any work begins

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Step 4: We Get It Done

Our fully equipped vans carry everything needed to do the job with no runarounds or delays..

Step 5: Clean-Up & Wrap-UP

We leave your home neat and tidy, walk you through the completed work, and issue a clear invoice with warranty details.

Step 6: Follow-Up (If Needed)

We check in to ensure everything’s working as it should. If there’s a problem, we’ll make it right — no dramas.

Working With Trusted Brands

We use only reputable plumbing brands and proven products, ensuring every installation is durable, reliable, and built to last.

Backflow Prevention FAQ’s

Here are answers to the most common plumbing questions—clear, practical, and easy to understand for peace of mind.

Every 12 months. Annual testing is a legal requirement under Queensland plumbing regulations. The test must be carried out by a backflow-endorsed licensed plumber, and a compliance certificate submitted to your local water authority.

Only a licensed plumber with a backflow endorsement can legally test, repair, or certify a backflow prevention device in Queensland. Creek to Coast Plumbing holds the required endorsements — QBCC Licence 1199436.

Our plumber will identify the issue and carry out repairs on the spot in most cases. We carry common parts on our vehicles. Once repaired and retested, we provide the compliance certificate and submit the report to your local authority.

Yes. Bidet seats and trigger sprayers are classified as a high-hazard backflow risk under Australian Standards. A correctly rated backflow prevention device must be installed and tested annually. Creek to Coast installs bidets and handles the full compliance requirements.

Yes, if your irrigation system is connected to the mains water supply a backflow prevention device is required and must be tested annually. The type of device depends on your setup and hazard level.

An RPZ (Reduced Pressure Zone) valve is the highest level of backflow protection available. Required in high-hazard situations — commercial properties, irrigation systems with fertiliser injection, and industrial facilities. Must be tested annually by a backflow-endorsed plumber.

Yes. Once testing is complete, we handle the compliance documentation and submit the required reports to your local authority on your behalf.