Backflow Testing & Thermostatic Mixing Valves

Ensure your plumbing system is compliant with Tweed Coast, Byron and Gold Coast Council regulations with our backflow prevention and thermostatic mixing valve testing services.

We provide expert installation, testing, servicing, and repairs, ensuring your system runs smoothly and meets all local compliance standards.

Protecting Your Water Supply For Compliance

Backflow prevention is a critical part of any commercial plumbing system. It protects your potable (drinking) water from contamination by preventing the reverse flow of water from any harmful sources.

At Plumb-Jet & Gas-Jet, we provide certified backflow prevention device installation, testing and servicing for businesses and commercial facilities across Tweed Heads, the Gold Coast and surrounding areas. If your site has irrigation systems, rainwater tanks, mechanical pits or any potential contaminants near a water outlet, you’ll likely need a backflow device to remain compliant with council regulations, and to ensure your water stays safe.

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What Is Backflow and Why Does It Matter?

Backflow happens when the normal flow of water is reversed due to a sudden drop or change in water pressure. This reversal can allow contaminated water from external sources, such as chemicals, waste, or dirty water, to enter the clean drinking water supply.

It’s a serious health risk and the reason why councils require commercial properties to have backflow prevention measures in place.

Do You Need a Backflow Prevention Device?

Your property may need a backflow prevention device if:

You have an irrigation system (e.g. for landscaping or agriculture)
You use underground rainwater tanks connected to mains water
You operate a site with a mechanical pit or wash-down area
You have fire hose reels or large commercial plumbing setups
There are chemical storage areas near water outlets
Your premises is in a high-risk commercial or industrial zone

Not sure if your site needs one? Our qualified team can assess your plumbing and advise on the right solution.

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Council Requirements for Testing and Compliance

Tweed Shire Council, Byron Bay Council and Gold Coast City Council require that all registered backflow prevention devices are tested annually by a qualified and licensed plumber. This is a legal requirement to maintain compliance.

Once tested, the results must be submitted to council. If your backflow device is found to be faulty or non-compliant, it must be repaired or replaced immediately.

At Plumb-Jet & Gas-Jet, we handle the entire process:

Annual backflow testing
Device maintenance or replacement if needed
Submitting test reports to council
Providing a compliance record for your files

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FAQ’S

A backflow prevention device stops contaminated water from flowing back into the clean water supply. It’s essential for protecting drinking water from chemicals, waste, and other pollutants. You could need one if your property has irrigation systems, underground rainwater tanks, or areas like mechanical pits that pose a contamination risk.

Yes. These three councils require commercial properties with certain risk factors to have a backflow prevention device installed and tested every 12 months by a licensed plumber. Plumb-Jet can handle the testing, reporting, and compliance for you.

Council regulations require that all registered backflow devices be tested annually by a qualified and licensed plumber.

If your device fails, we can usually repair or replace it on the spot to restore compliance.

If your business uses irrigation, rainwater tanks connected to mains water, has fire hose reels, mechanical wash-down areas, or stores chemicals near water outlets, you’ll most likely require a backflow device.