Cooke & Dowsett is a national commercial and industrial plumbing business with a Western Australian office based in Malaga. The company services the construction industry across a wide range of sectors, including accommodation, commercial, defence, education, health, infrastructure, retail, sports and leisure. With a history dating back to 1992, Cooke & Dowsett has built a strong reputation for delivering professional plumbing services on major construction projects across Australia and New Zealand. The business specialises in commercial plumbing, design and construction, hydraulic systems, gas services, fire services, civil drainage, prefabrication and project management of plumbing services.
Repairs and Maintenance in Dianella, WA 6059
Clinton & Co. Plumbers and Gasfitters Pty Ltd is a family owned and operated plumbing and gas fitting business based in Malaga, servicing domestic, commercial and industrial clients across Perth. Established in 1998, the business provides plumbing, gas fitting and backflow solutions, with a focus on dependable service, honest advice, reliable workmanship and quality-guaranteed outcomes. With experience across private industry, mining, resources and government projects, Clinton & Co supports clients with plumbing installation, maintenance and specialised plumbing solutions. The business promotes itself with the message “Think plumbing, only BETTER,” reflecting its focus on professional service and long-term client relationships.
Advertise with us
Allscope Plumbing & Gas is a Western Australian plumbing and gas business specialising in commercial, construction, industrial and civil sector work. Established in 2021 by Carl Walsh and Matthew Edwards, the company brings more than 38 years of combined experience and provides installation, construction, upgrades, service and maintenance, preventative maintenance and project management services across WA.
Buckenara Plumbing Gas & Electrical is a Perth-based plumbing, gas fitting, electrical and maintenance business servicing residential and commercial clients across the Perth metropolitan area. Known as one of Perth’s premier plumbing, gas, electrical and maintenance specialists, the company provides support across commercial plumbing, residential plumbing, emergency plumbing, hot water systems, blocked drains, burst pipes, electrical work and preventative maintenance. With a strong focus on reliable service, safe workmanship and practical solutions, Buckenara Plumbing Gas & Electrical provides fast support for urgent repairs as well as scheduled maintenance to help homes and businesses reduce breakdowns, improve safety and keep essential systems running efficiently. Their licensed team offers 24/7 emergency support, same-day hot water system solutions and preventative maintenance programs designed to identify issues before they become costly problems.
VTPG (VT Plumbing Group) is a Perth-based commercial plumbing and maintenance contractor delivering plumbing, gas and hydraulic services across commercial, construction, government and residential sectors. Founded by Jake Veaudry and Steven Tompsett, the business has grown into a well-established team of more than 40 staff, including experienced project managers, licensed tradespeople and apprentices. Training, development and staff retention remain key focuses of the business. VTPG specialises in commercial plumbing construction, building maintenance, gas services, drainage, fire services, backflow prevention and hydraulic infrastructure projects, while also providing reactive maintenance and residential plumbing support. Known for its professionalism, efficiency and strong safety culture, VTPG combines modern project management systems, quality workmanship and a customer-focused approach to deliver reliable plumbing solutions across Perth. With extensive industry experience, a growing apprentice workforce and a commitment to continuous improvement, VTPG has built a reputation for delivering high-quality outcomes across both service and project work.
Rodgers Plumbing is a Western Australian plumbing contractor operating as part of The Rodgers Group of Companies Pty Ltd, delivering commercial plumbing, maintenance, drainage, gas fitting, and backflow prevention services throughout metropolitan Perth and regional Western Australia and National if required. Led by Cameron Rodgers, Managing Director and licensed plumber and gasfitter with more than 30 years of industry experience, the company is recognised for providing reliable, professional, and compliant plumbing solutions across projects of all sizes. Specialising in Domestic, Industrial and Commercial Plumbing, Drainage Installation and Repairs Gas Fitting Services fitting and testing Backflow Prevention Testing and installation CCTV Drain Inspections Water Jetting and Drain Cleaning Civil and Underground Plumbing Works Hydraulic Consulting National, Regional and Metropolitan Project Delivery With experienced leadership, qualified personnel, robust safety systems, and extensive equipment resources, Rodgers Plumbing has the capability to successfully deliver small, medium, and large-scale plumbing projects across Western Australia.
Snap Plumbing & Construction is a Western Australian owned plumbing, gas and maintenance contractor with more than 20 years of experience servicing commercial, healthcare, aged care, education and construction sectors. Based in Malaga, the business provides commercial plumbing, gas fitting, preventative maintenance, asset management, CCTV drainage services and 24/7 emergency response throughout the Perth metropolitan area. Known for its customer-focused approach and specialist expertise in healthcare and aged care environments, Snap Plumbing has built a strong reputation for delivering reliable, compliant and high-quality plumbing solutions across a diverse range of industries.
Urbico Plumbing & Gas is a Perth based licensed plumbing contractor delivering high-quality commercial, residential, and specialist plumbing solutions across Perth’s northern suburbs and surrounding regions. With over 25 years of industry experience, Urbico is led by a fully licensed tradesman with an extensive background in plumbing, gas fitting, heating, and hydronic systems.
Streamline Plumbing is a leading Western Australian hydraulic services contractor specialising in commercial, industrial and civil plumbing solutions. Established in 1998, the company delivers expert services across water, sewer, drainage, gas, fire and mechanical systems for projects throughout WA. Based in Malaga, Streamline Plumbing works across sectors including healthcare, education, government, retail, multi-residential and infrastructure developments. With more than 25 years of experience, the company has built a reputation for technical expertise, quality workmanship and delivering reliable hydraulic solutions on complex projects.
Find a Master Plumber for commercial backflow support
Keep backflow devices working as intended
A backflow device that is leaking, discharging, damaged or not holding pressure correctly needs informed attention. In commercial and industrial settings, the practical challenge is often bigger than the device itself: access arrangements, shutdown restrictions, tenant activity, asset records and site controls can all affect how repairs and maintenance are planned.
Commercial backflow repairs and maintenance focus on testable backflow prevention devices used to protect the potable water supply from contamination. These devices have moving parts, seals, springs, check valves, relief valves and test points. Over time, components can wear, foul with debris or stop operating correctly.
When backflow valve servicing may be needed
Regular commercial backflow maintenance may be arranged as part of asset upkeep, or it may follow a test result that identifies a fault. A device may also need attention after it has been repaired, maintained or replaced.
Useful reasons to seek assistance include:
- a device that is leaking or discharging;
- a device that fails field testing;
- visible damage to the assembly or surrounding pipework;
- concerns that the device is not holding pressure correctly;
- debris or fouling affecting internal components; and
- a need to arrange ongoing servicing or testing records for a site asset.
Testing confirms whether a device is still protecting the drinking water supply as intended. Repair work and testing are connected but distinct tasks: a licensed plumbing contractor installs, commissions and repairs backflow prevention devices, while an accredited backflow tester can test testable devices.
What repairs and maintenance can involve
The work required depends on the device condition and the result of testing. Backflow preventer maintenance can involve inspection, field testing, fault diagnosis, cleaning and repair of components, with testing after relevant work has been completed.
- commissioning tests after installation;
- annual field testing of registered testable devices;
- testing after repair, maintenance or replacement;
- cleaning strainers or internal components;
- replacement of seals, springs, check valves or relief-valve parts;
- diagnosis of a failed test result; and
- repair or replacement of leaking, damaged or non-compliant devices.
For boundary containment backflow devices in Western Australia, Water Corporation requires registration and testing at commissioning, followed by testing annually or after maintenance. Test reports must be submitted through Water Corporation’s online lodgement system by an accredited backflow tester permitted to test those devices.
Plan the work around your site
Backflow work at a business, facility or industrial site can require coordination with building operations. Before engaging a plumbing business, identify whether water can be isolated and whether a shutdown window, access arrangement or authorisation is needed. This gives the plumbing business a clearer starting point and helps them understand operational constraints before attending.
Details that can help with an enquiry
- the device make, model, size, serial number and asset ID, where available;
- the device location, plant-room reference and access instructions;
- previous test reports, service records, manuals or drawings;
- Water Corporation registration details where relevant;
- photos of the valve assembly, labels and surrounding pipework;
- whether the device is leaking or discharging, and when the issue began;
- whether water isolation is possible and any business or tenant shutdown restrictions;
- site induction, permit, parking, loading and permitted-hours requirements; and
- the person authorised to approve repairs if the device fails.
For industrial operations, it may also be important to identify process impacts, safety permits, environmental controls and critical production constraints.
Brands and equipment you may encounter
Asset labels, previous reports and supplier records may refer to a range of backflow products, components, pipe systems and test equipment. Examples customers may encounter include RMC, AVG, Watts, Febco, Zurn, Wilkins, Apollo, ValvCheQ, Bermad and Ames. Supply channels and related products may also be associated with Reece, Galvins, Tradelink, Enware, Galvin Engineering, Kembla, Viega, Iplex, Vinidex and Rehau.
Device make, model, size and serial number can be particularly useful when arranging commercial backflow repairs. Test instruments may also appear in site records under names such as Testo, Fluke, Rothenberger or RIDGID. These are examples only; the equipment present at a property and the condition of the device determine the information most useful for servicing discussions.
Choose a plumbing business with the right information in hand
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 their property or project.
When comparing options for backflow repairs and maintenance, explain the device issue, site constraints and the outcome you need. Ask whether the plumbing business can consider the available device details, access conditions and timing restrictions before work is arranged. Clear records and a nominated contact person can be especially valuable where an asset is managed across multiple stakeholders.
Related backflow needs may involve Backflow Installation or Backflow Testing.
Frequently asked questions
What does backflow repairs and maintenance involve?
It can involve inspection, field testing, fault diagnosis, cleaning internal components or strainers, replacing worn parts, and repairing or replacing a leaking, damaged or non-compliant device. The required work depends on the device condition and test outcome.
Why might a backflow device fail?
Testable devices contain moving parts, seals, springs, check valves and relief valves. These components can wear, foul with debris or stop holding pressure correctly over time. A test helps identify whether the device is still operating as intended.
When are boundary containment devices tested in Western Australia?
Water Corporation requires boundary containment backflow devices to be registered and tested at commissioning, then annually or after maintenance.
Who can repair and test a backflow prevention device?
Water Corporation states that a licensed plumbing contractor must install, commission and repair backflow prevention devices. An accredited backflow tester can test testable devices.
What should I provide when requesting commercial backflow maintenance?
Provide the device details and location where available, previous reports, photos, access instructions, isolation and shutdown information, and the contact authorised to approve repairs. Site induction and permit requirements may also be relevant.
Do test reports need to be lodged?
For the relevant Water Corporation devices, reports must be submitted through Water Corporation’s online lodgement system by an accredited backflow tester permitted to test them.
Use Find a Master Plumber to choose a plumbing business for commercial and industrial backflow repairs, maintenance, installation or testing. Providing clear asset and access information can help start a more productive discussion.