When a backflow device needs commissioning, annual testing or a check after maintenance, clear records and site access details can make the process easier. Find a Master Plumber connects commercial and industrial customers with plumbing businesses associated with Master Plumbers WA for backflow testing and related work.
At Bonza Complete Plumbing and Gas, our core belief revolves around people. We promise not to overcharge you or push unnecessary services. That’s just how friends treat each other! As skilled plumbers and genuinely good people, we always provide straightforward advice. If you need a plumber in the southern suburbs, don’t settle for just anyone –... reach out to us!
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Benchmark Hydraulics & Civil is a Western Australian owned and operated plumbing, hydraulic and civil services business based in O’Connor, servicing commercial, civil, mining, resources, remote area and new housing clients across Western Australia. The company has more than 40 years of experience within the plumbing industry and provides... commercial plumbing, drainage, civil works, mining and remote area hydraulic services, sewer and water mains, stormwater, sanitary plumbing, gas services, backflow prevention and water treatment-related works.
With a strong focus on quality service, safe work practices and compliance with industry standards, Benchmark Hydraulics & Civil supports projects of all sizes with experienced site and office personnel, strong project management and practical communication. The business aims to deliver work successfully, on time and on budget, while meeting client documentation, regulatory, budget and schedule requirements.
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Wizard Plumbing is a Perth-based plumbing, gas and drainage contractor providing maintenance, emergency and project plumbing services across the metropolitan area. Operating from O’Connor, the business services residential, commercial and property maintenance clients with a strong focus on quality workmanship and customer service.
Led by owner... Scott Healy, who brings more than 35 years of experience across commercial, civil, residential and maintenance plumbing, Wizard Plumbing has built a reputation for delivering reliable, honest and professional plumbing solutions. The business has been operating for more than 10 years and is built on the core values of integrity, professionalism, excellence and customer focus.
The company specialises in plumbing maintenance, gas fitting, blocked drains, leak detection, hot water systems, backflow testing, roof plumbing and emergency plumbing services. Its licensed and qualified team combines practical expertise with modern diagnostic equipment to deliver efficient and cost-effective solutions.
Known for transparent pricing, strong communication and dependable service, Wizard Plumbing is trusted by homeowners, property managers and commercial clients throughout Perth for both routine maintenance and complex plumbing projects.
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Commercial Plumbing Co Pty Ltd is a Bibra Lake-based plumbing business specialising in industrial, commercial and mining projects across Western Australia. The business provides design, installation and maintenance services, with capability across hydraulic systems, civil drainage design and plumbing works required to comply with Australian... Standards.
With a strong focus on safe and effective project delivery, Commercial Plumbing Co Pty Ltd supports clients with commercial plumbing, civil drainage, hydraulic design and project-based plumbing services. The company operates from Unit 2, 52 Cocos Drive, Bibra Lake WA 6163, and holds Plumbing Licence PL 8947.
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Hilton Plumbing is an award-winning, family-run Perth plumbing business established in 1980. Based in Bibra Lake, the team provides domestic and commercial plumbing, gasfitting, hot water, blocked-drain, leak-detection and emergency services across metropolitan Perth. Recognised by MPAWA as Employer of the Year and for Excellence in Customer... Service in both 2024 and 2025, Hilton Plumbing is committed to honest advice, upfront pricing and dependable workmanship.
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Wilcox & Co Plumbing is a Perth-based hydraulic services contractor with more than 50 years of experience delivering commercial plumbing and hydraulic infrastructure projects throughout Western Australia.
Established in 1974, the business specialises in the design, coordination and installation of hydraulic services for commercial, industrial,... government and institutional developments, working closely with builders, architects, engineers and project teams to deliver high-quality outcomes.
Known for its technical expertise and long-standing industry reputation, Wilcox & Co Plumbing has successfully delivered hydraulic solutions across a wide range of major construction projects, providing reliable, compliant and efficient plumbing infrastructure.
With a strong focus on professionalism, quality workmanship and project delivery, Wilcox & Co Plumbing continues to be a trusted partner for complex commercial developments across Western Australia.
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Holborn Plumbing & Gas is an O’Connor-based plumbing and gas fitting business servicing residential, commercial, construction and maintenance clients across Perth Metro to Mandurah. The business provides practical plumbing and gas support across emergency plumbing, general maintenance, backflow testing, hot water systems, blocked drains, leak... detection, burst pipes and leaking taps.
With Managing Director Clinton Holborn starting in the plumbing industry in 1988, Holborn Plumbing & Gas brings extensive industry experience and practical trade knowledge to domestic and commercial plumbing work. The business is focused on honest, prompt and reliable service, with fully licensed tradespeople and a strong customer service approach.
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Fairview Plumbing & Civil Pty Ltd is a Perth-based commercial, industrial and civil plumbing specialist delivering professional plumbing solutions across Western Australia.
Established in 2011 by Directors Joel Fienberg and Luke Burwood, Fairview has developed a reputation as a trusted plumbing contractor for builders, developers, government,... commercial and industrial clients.
With more than 30 years of combined industry experience, Fairview specialises in commercial plumbing, civil drainage, Water Corporation infrastructure, fire services, industrial maintenance, gas services and complex plumbing installations.
Driven by quality, safety and strong client relationships, Fairview Plumbing & Civil delivers reliable outcomes from project commencement through to completion.
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Backflow testing helps confirm whether a testable backflow prevention device is still protecting the drinking water supply as intended. For businesses, facilities and industrial sites, the task often sits alongside asset management, access controls and the need to limit disruption to normal operations.
Testable devices have moving parts, seals, springs, check valves, relief valves and test points. Over time, components can wear, become fouled with debris, leak or stop holding pressure correctly. A field test provides a practical check of device performance and can identify whether repair, replacement or further investigation may be needed.
When backflow testing may be required
Backflow testing may be arranged following installation, as part of ongoing device management, or after maintenance, repair or replacement. It can also be relevant when a device is leaking or discharging, when records need updating, or when a site needs a current test report for its own administrative requirements.
In Western Australia, Water Corporation requires boundary containment backflow devices to be registered and tested at commissioning. Subsequent testing is required annually or after maintenance. Water Corporation states that test reports must be submitted through its online lodgement system by an accredited backflow tester permitted to test those devices.
Water Corporation also states that installation, commissioning and repair of backflow prevention devices must be carried out by a licensed plumbing contractor, while accredited backflow testers can test testable devices. Confirm the scope of your particular job with the plumbing business you choose.
What happens during commercial backflow testing
Commercial backflow testing involves inspection and field testing of the device. The tester may record the device condition and readings, assess whether its operation aligns with expected performance, and identify whether servicing, repair, replacement or further investigation is appropriate.
Depending on the device and its condition, related work may involve cleaning strainers or internal components, replacing seals, springs, check valves or relief-valve parts, or investigating a failed test. A failed result does not by itself determine the final solution; the condition of the device and the site circumstances need to be considered.
For commercial backflow prevention testing, ask how test results and any recommended follow-up work will be documented. This supports clearer communication between site contacts, maintenance teams and the plumbing business.
Information that helps a plumbing business prepare
Good information before attendance can help a plumbing business understand the asset, arrange appropriate access and work around operational restrictions. Useful details include:
the device make, model, size, serial number and asset ID, where available;
previous test reports, maintenance history and Water Corporation registration details;
the exact device location, photographs of the valve assembly and any visible labels;
whether the device is leaking or discharging, and whether water can be isolated;
site contact details, access instructions, induction requirements and permitted working hours;
shutdown restrictions, tenant or business continuity considerations, and the person authorised to approve repairs; and
the report format needed and the reason for the test, such as routine compliance, a fault, water loss, sale or insurance.
For an industrial backflow testing enquiry, also flag relevant safety permits, process impacts, environmental controls, confined-space risks, hot works requirements and critical production impacts. These details help the plumbing business assess the practical conditions before attending.
Testing, repairs and installation are different jobs
Service
What it addresses
Backflow testing
Inspection and field testing to assess whether a testable device is operating as intended.
Repairs and maintenance
Attention to worn, leaking, damaged or failed components and devices.
Installation
Work associated with fitting and commissioning a backflow prevention device.
Knowing which outcome you need helps direct the enquiry. If the immediate requirement is a test but the device fails, the plumbing business can discuss the appropriate follow-up work and any site considerations.
Products and equipment you may encounter
Backflow assemblies, components and testing equipment can be associated with a range of brands and supply channels. Examples customers may encounter include Watts, Febco, Zurn, Wilkins, Apollo, RMC, AVG, Bermad, Ames and Enware. Reece, Galvins, Tradelink, Parkwood Plumbing Centre, Bunnings and Plumbing Plus are also among the supply channels associated with backflow products.
Names on an existing device, valve assembly or test equipment can be useful reference details when making an enquiry. They do not, on their own, establish the condition of a device or the work required.
Choose a Master Plumber with the right information
Find a Master Plumber is backed by the Master Plumbers and Gasfitters Association of Western Australia. It connects customers with Master Plumbers and plumbing businesses associated with Master Plumbers WA, helping customers make a more informed choice of plumbing business for a property or project.
For a commercial backflow device testing request, be clear about the device, site and operational constraints rather than relying on a broad description. This gives the plumbing business a more useful starting point for discussing the testing work and any likely follow-up.
It is the inspection and field testing of a testable backflow prevention device to confirm whether it is still protecting the drinking water supply as intended.
When are boundary containment devices tested in Western Australia?
Water Corporation requires registered boundary containment backflow devices to be tested at commissioning, then annually or after maintenance.
What if a device fails its test?
A failed test can indicate a need for fault diagnosis, servicing, repair, replacement or further investigation. The appropriate next step depends on the device condition and site circumstances.
Who can test a registered device?
Water Corporation states that test reports for these devices must be submitted through its online lodgement system by an accredited backflow tester permitted to test them.
What should I provide before testing is arranged?
Provide available device and asset details, prior reports, the location, access requirements, site restrictions, isolation information and the appropriate site contact.
Use Find a Master Plumber to choose a plumbing business for commercial or industrial backflow testing. Have your device details, previous reports and site access requirements ready to support a clearer enquiry.
