Backflow Prevention Testing — Melbourne CBD & Inner Suburbs

Melbourne’s Backflow Prevention Specialists, Backed by 30+ Years in Business.

Certified backflow prevention testing, RPZ testing and annual inspections for strata, commercial and industrial buildings across Melbourne — every report lodged with your water authority on your behalf.

  • RNo obligation, no pushy sales
  • RFree site assessment
  • RFast Melbourne response
4.7
Over 350+ Google reviews

2,000+ Commercial Clients
30+ Years experience

OUR PARTNERS:

Explore Our Services

Butler Plumbing’s Complete Backflow Prevention Services

From annual backflow testing and RPZ testing to urgent backflow inspection after a failed-test notice, our certified backflow testing team covers every testable device on your site — and we’re the backflow prevention specialist Melbourne managers count on.

Installation

Supply and installation of backflow prevention devices for new and existing buildings.

Annual Backflow Testing

Certified testing for all device types; compliance report lodged with your water authority on the day.

Repairs & Remediation

Same-day repair and recommissioning where possible after a failed test; remediation completed within the 20-business-day requirement.

Asset Protection

Backflow devices and water meters are often located in public areas; we recommend and supply protective cages to safeguard your assets.

Compliance Management

We add your building to our compliance schedule so you never miss your annual deadline; a 12-month reminder is included as standard.

Due for your annual backflow prevention testing?

Book today and we’ll lodge the paperwork with your water authority immediately.

We lodge compliance reports with all Victorian water authorities

What Is Backflow?

Contaminated water flowing the wrong way into the public mains

Backflow occurs when water flows in the wrong direction through your meter assembly — syphoning potentially contaminated water back into the public drinking supply.

The risks are real: serious illness, injury claims and significant liability exposure for the building owner. A properly tested backflow prevention device is what stands between your building and that risk.

Your Legal Obligation

Annual backflow testing is compulsory — not optional.

Under Regulation 12 of the Water (Estimation, Supply and Sewerage) Regulations 2014, the owner or occupier must ensure correct backflow devices are installed and tested annually by a licensed backflow plumber.
  • RAS/NZS 3500 + National Plumbing & Drainage compliance
  • RAnnual inspection, test and certified report
  • RReport lodged with your water authority on your behalf

What We See In Melbourne Buildings

The three compliance gaps that catch owners out

Water authorities are increasing enforcement — penalties and disconnection are now genuinely on the table.

01

No annual test records

A backflow device is installed, but there’s no documentation of annual testing being completed or lodged.

02

Wrong device for the risk

A device is fitted, but it’s the wrong type for the building’s actual hazard rating and won’t pass inspection.

03

No device fitted at all

The building has never had a backflow prevention device installed — leaving owners exposed to penalties and liability.

Also Available

Other commercial plumbing services

Beyond backflow prevention testing, our team supports Melbourne buildings with the full range of commercial plumbing services.

A proactive commercial plumbing maintenance program — delivered by a dedicated commercial plumber team — saves money, reduces emergencies and avoids costly damage from floods, gas leaks and burst pipes. We keep your building compliant with detailed records and documentation your insurers and OC committees rely on.

  • Roof, downpipe & gutter inspection and cleaning
  • Sewer & stormwater drainage inspection and cleaning
  • Hot water unit & gas appliance servicing
  • Backflow prevention & thermostatic mixing valve testing
  • CCTV drain inspections with footage supplied
  • Flexi hose inspection & replacement
  • Common area bathroom & fixture inspections
  • Pump inspections and odour investigations

A leaking roof starts small but escalates fast — from stained ceilings to structural damage and major repair bills. Our master plumbers are experts in commercial roof plumbing across Melbourne, repairing leaks and guttering, photographing the problem so you can see it for yourself, and recommending the right mix of repairs and ongoing maintenance to prolong the life of your roof.

  • Roof leak investigation and repairs of all sizes
  • Broken or blocked guttering and spouting repair and replacement
  • Tiled, corrugated iron, Zincalume, Colorbond and metal roofs
  • Flashing repairs and replacement
  • Box gutter, downpipe and stormwater solutions
  • Preventative maintenance and roof condition inspections
  • Cleaning of roof, gutters and downpipes
  • Photographic reporting for managers and OC committees

Licensed gas fitting and safety servicing that helps landlords and building managers meet their obligations under Victoria's Residential Tenancies Act. We improve appliance efficiency, minimise the danger of CO leaks and extend the life of every gas appliance — with a full Gas Service Report on completion.

  • Biennial Gas Safety Inspection Checks for landlords
  • Carbon Monoxide (CO) emission & negative pressure testing
  • Gas leak detection and emergency isolation
  • Burner inspection, cleaning & pilot ignition testing
  • Heat exchanger inspection and filter cleaning
  • Heater service & tune for optimal efficiency
  • Commercial kitchen & appliance installation
  • Gas Service Reports & compliance certification

From recurrent blockages to full drain rehabilitation, we use CCTV inspection, high-pressure jetting and targeted repairs to keep stormwater and sewer systems flowing — minimising tenant disruption and protecting building assets.

  • CCTV drain inspections with footage supplied
  • High-pressure jet cleaning and rodding
  • Drain repairs, relining and replacement
  • Stormwater & sewer management for commercial sites

Design, installation and servicing of commercial hot and cold water systems. We resolve pressure issues, replace ageing infrastructure and maintain hot water plants so tenants never notice a problem.

  • Hot water plant installation & repair
  • Tempering valve servicing for healthcare & aged care
  • Pressure balancing across multi-storey buildings
  • Rapid replacement of failed units to minimise downtime

Targeted repair and upgrade of ageing pipework throughout the building. Whether it's a single failed riser or a staged copper-to-modern-material upgrade, we deliver works with minimal disruption to occupants and clear committee reporting.

  • Burst pipe repairs and emergency isolation
  • Staged pipe replacement programs
  • Copper, PEX and HDPE upgrade specialists
  • Coordinated works around tenanted operating hours

Stay ahead of every compliance deadline across your entire property portfolio. We manage annual backflow prevention and thermostatic mixing valve (TMV) testing end to end — with automated scheduling so nothing is missed, certified testing by licensed technicians and direct lodgement of results with the relevant water authority. One provider, one schedule and full compliance across every building you manage.

  • Annual backflow prevention device testing
  • Automated scheduling and renewal reminders
  • Portfolio-wide compliance tracking and reporting
  • Failed-device remediation and re-testing
  • Thermostatic mixing valve (TMV) testing and servicing
  • Direct lodgement with the relevant water authority
  • Certified technicians with full documentation supplied

Looking for an emergency commercial plumber or commercial plumbers near me in Melbourne? Our commercial plumber team is available 24/7 across the Inner North and CBD. Our process is simple: we come to you, make an assessment, sort your problem and be on our way — no hassle, no worries. Call 03 9416 1726 any time.

  • 24/7 emergency response across Melbourne
  • Burst pipes, leaks & blocked drains
  • Hot water & heater repair and replacement
  • Gas leak detection, isolation & repair
  • Toilet, bathroom & fixture emergencies
  • Roof plumbing & storm damage callouts
  • Priority service for facilities managers & OC committees
  • Live updates and follow-up reporting to managers

Routine Maintenance

A proactive commercial plumbing maintenance program — delivered by a dedicated commercial plumber team — saves money, reduces emergencies and avoids costly damage from floods, gas leaks and burst pipes. We keep your building compliant with detailed records and documentation your insurers and OC committees rely on.

  • Roof, downpipe & gutter inspection and cleaning
  • Sewer & stormwater drainage inspection and cleaning
  • Hot water unit & gas appliance servicing
  • Backflow prevention & thermostatic mixing valve testing
  • CCTV drain inspections with footage supplied
  • Flexi hose inspection & replacement
  • Common area bathroom & fixture inspections
  • Pump inspections and odour investigations

Roof Plumbing

A leaking roof starts small but escalates fast — from stained ceilings to structural damage and major repair bills. Our master plumbers are experts in commercial roof plumbing across Melbourne, repairing leaks and guttering, photographing the problem so you can see it for yourself, and recommending the right mix of repairs and ongoing maintenance to prolong the life of your roof.

  • Roof leak investigation and repairs of all sizes
  • Broken or blocked guttering and spouting repair and replacement
  • Tiled, corrugated iron, Zincalume, Colorbond and metal roofs
  • Flashing repairs and replacement
  • Box gutter, downpipe and stormwater solutions
  • Preventative maintenance and roof condition inspections
  • Cleaning of roof, gutters and downpipes
  • Photographic reporting for managers and OC committees

Gas Fitting & Compliance

Licensed gas fitting and safety servicing that helps landlords and building managers meet their obligations under Victoria's Residential Tenancies Act. We improve appliance efficiency, minimise the danger of CO leaks and extend the life of every gas appliance — with a full Gas Service Report on completion.

  • Biennial Gas Safety Inspection Checks for landlords
  • Carbon Monoxide (CO) emission & negative pressure testing
  • Gas leak detection and emergency isolation
  • Burner inspection, cleaning & pilot ignition testing
  • Heat exchanger inspection and filter cleaning
  • Heater service & tune for optimal efficiency
  • Commercial kitchen & appliance installation
  • Gas Service Reports & compliance certification

Commercial Drainage Solutions

From recurrent blockages to full drain rehabilitation, we use CCTV inspection, high-pressure jetting and targeted repairs to keep stormwater and sewer systems flowing — minimising tenant disruption and protecting building assets.

  • CCTV drain inspections with footage supplied
  • High-pressure jet cleaning and rodding
  • Drain repairs, relining and replacement
  • Stormwater & sewer management for commercial sites

Hot & Cold Water Supply

Design, installation and servicing of commercial hot and cold water systems. We resolve pressure issues, replace ageing infrastructure and maintain hot water plants so tenants never notice a problem.

  • Hot water plant installation & repair
  • Tempering valve servicing for healthcare & aged care
  • Pressure balancing across multi-storey buildings
  • Rapid replacement of failed units to minimise downtime

Pipe Repairs & Upgrades

Targeted repair and upgrade of ageing pipework throughout the building. Whether it's a single failed riser or a staged copper-to-modern-material upgrade, we deliver works with minimal disruption to occupants and clear committee reporting.

  • Burst pipe repairs and emergency isolation
  • Staged pipe replacement programs
  • Copper, PEX and HDPE upgrade specialists
  • Coordinated works around tenanted operating hours

Portfolio Compliance Management

Stay ahead of every compliance deadline across your entire property portfolio. We manage annual backflow prevention and thermostatic mixing valve (TMV) testing end to end — with automated scheduling so nothing is missed, certified testing by licensed technicians and direct lodgement of results with the relevant water authority. One provider, one schedule and full compliance across every building you manage.

  • Annual backflow prevention device testing
  • Automated scheduling and renewal reminders
  • Portfolio-wide compliance tracking and reporting
  • Failed-device remediation and re-testing
  • Thermostatic mixing valve (TMV) testing and servicing
  • Direct lodgement with the relevant water authority
  • Certified technicians with full documentation supplied

Emergency Commercial Plumber

Looking for an emergency commercial plumber or commercial plumbers near me in Melbourne? Our commercial plumber team is available 24/7 across the Inner North and CBD. Our process is simple: we come to you, make an assessment, sort your problem and be on our way — no hassle, no worries. Call 03 9416 1726 any time.

  • 24/7 emergency response across Melbourne
  • Burst pipes, leaks & blocked drains
  • Hot water & heater repair and replacement
  • Gas leak detection, isolation & repair
  • Toilet, bathroom & fixture emergencies
  • Roof plumbing & storm damage callouts
  • Priority service for facilities managers & OC committees
  • Live updates and follow-up reporting to managers

Who We Help

Built for the people managing complex buildings.

Whether you manage a single tower or a portfolio of properties, our commercial plumber team tailors every job to your operating model — with the reporting, response times and compliance documentation each role demands. One commercial plumber, one direct line, every building.

Body Corporates

Reduce surprise costs and protect property values.
  • Budget certainty
  • Committee reports

Building Managers

Reliable reporting and rapid response that makes your job easier.
  • Rapid response
  • One point of contact

Student Accommodation

Keep tenants comfortable and minimise disruptions.
  • Out-of-hours works
  • Bulk amenities

Aged Care Facilities

Protect vulnerable residents with reliable infrastructure.
  • TMV testing
  • Compliance ready

Hotels & Commercial

Maintain guest experience and operational continuity.
  • 24/7 availability
  • Discreet attendance

About Us

Your Trusted Melbourne Commercial Plumber — Delivering With Integrity.

Butler Plumbing is a commercial plumber and commercial plumbing maintenance specialist dedicated to building managers, OC committees and facility teams.

With 30+ years operating across Melbourne CBD & inner suburbs, we’re the commercial plumber Melbourne managers search for when they want responsive service, clear reporting and compliance support for properties of all sizes.

Building Trust Through Three Decades of Service.

Fast Response Times

Rapid attendance within Melbourne CBD and inner suburbs.

Compliance Documentation

Detailed reporting and documentation for all works completed.

Clear Committee Reporting

Professional communication tailored for OC committees and managers.

Reliable Ongoing Maintenance

Proactive strategies that protect assets and reduce risk.

Accreditations & Credentials

Accredited. Insured. Independently recognised.

Every commercial plumber on our team works under the licences, memberships and industry accreditations that commercial property owners, OC committees and insurers expect — backed by a 30+ year reputation as the commercial plumber Melbourne managers recommend.

Master Plumbers Association

Victoria’s peak plumbing body

Building & Plumbing Commission

Licensed & registered plumber
Licence No. 25910

Backflow Prevention Assoc.

Certified backflow specialists

Public Liability & WorkCover

Fully Insured

Coverage on every job, every site.

Established 1987

30+ Years

Three decades serving Melbourne.

Independent & Accountable

Family Owned

Answering to clients, not shareholders.

The Challenge

Small plumbing issues become major building problems.

In commercial and high-density buildings, minor issues compound fast — quiet leaks, blocked drains and missed compliance turn into structural damage, insurance headaches and emergency callouts. The difference is having a commercial plumber looking after the building between problems, not just a commercial plumber rushed in afterwards.
  • Reactive onlyWithout proper maintenance
  • Frequent emergency callouts & rising repair costs
  • Slow, hidden leaks discovered after damage is done
  • Compliance & insurance gaps when it matters most
  • Unhappy tenants and shorter asset lifespan
  • With Butler PlumbingA proactive partner
  • Proactive prevention & better budget forecasting
  • Early detection before small issues spread
  • Compliance-ready documentation on every job
  • Clear committee reporting & longer asset life
Book Backflow Testing    No obligation · Melbourne CBD & inner suburbs

Why Butler Plumbing

Built for buildings that can’t wait

Everything an owners corporation, building manager or facility team needs from a commercial plumbing partner.

Rapid CBD response

Local teams across Melbourne
Most jobs attended in 24-48 hrs

Fully licensed & insured

BPC-licensed commercial plumbers
Compliance-first on every job

100+ verified 5-star reviews

Trusted by OC committees
Building managers & facility teams

Dedicated office team

A real person answers, schedules the job, and explains rates upfront.
No waiting for a tradie callback

Professional written report

Photos & notes for every visit
Committee-ready documentation

Commercial & strata specialists

Hotel, aged care, officers, OCs
Tailored maintenance plans

Eyes and ears on site

An on-site extension of the building manager
for day-to-day oversight.

Site knowledge that matters

Thea team arrives already familiar with your building,
reducing delays and improving service quality.

How We Work With You

What is involved in getting a backflow test

Backflow testing shouldn’t be a hassle. From booking through to lodging your compliance report with the water authority, you’ll work with the same small team of licensed backflow plumbers — accredited, accountable and on your side, so your building stays compliant year after year.

Owner-operated · Melbourne fleet
01

We book in the service

We book in the service, including any concerns you may have, and discuss the potential that the water may need to be turned off.

  • Concerns noted upfront
  • Possible water shut-off

02

Our licensed plumber attends

Our licensed plumber attends the property — we locate and verify every device on site against your authority registration records.

  • Licensed plumber
  • Verified against records

03

We isolate and pressure-test each device

We isolate and pressure-test each device — field testing in accordance with AS/NZS 2845.3 using calibrated equipment. Depending on the set-up, this may involve having the water turned off.

  • AS/NZS 2845.3
  • Calibrated equipment

04

Pass or fail determination on the day

You get a pass or fail determination on the day. If a device fails, we discuss repair or replacement options immediately — remediation must be completed within 20 business days.

  • Result on the day
  • 20-business-day remediation

05

We lodge your compliance report

We lodge the compliance report with your water authority and send a copy to you for your records — and we provide information on any other suggested recommendations.

  • Lodged with your authority
  • Copy for your records

06

We log you in our maintenance schedule

We log you in our maintenance schedule, so you stay compliant moving forward and never have to worry about it.

  • Always compliant
  • We track it for you

Customer Reviews

The Backflow Prevention Specialist Trusted By Property & Facility Managers Across Melbourne.

When managers search for backflow prevention specialist they end up working with us — and stay on for annual backflow prevention testing and water backflow testing across their portfolio.

4.7
Google Reviews

FAQ

Backflow prevention testing answers for committees,
managers & building owners.

Common questions about backflow testing cost, RPZ testing, annual backflow prevention testing and what to expect when you book a backflow inspection. Can’t find what you need? Speak to our team directly.

What is backflow prevention testing and why is it required?

Backflow prevention testing is the mandatory annual inspection of your building's backflow prevention device to ensure contaminated water cannot flow back into the drinking water supply. Water authorities require certified backflow testing reports each year to keep your building compliant.

Do you provide backflow testing near me in Melbourne?

Yes. Butler Plumbing delivers backflow testing across Melbourne CBD and inner suburbs. If you've been searching for backflow prevention testing near me, our certified backflow inspection team can usually attend within 24–48 hours.

What devices does your backflow testing cover?

We provide RPZ testing, double check valve testing, pressure vacuum breaker testing and full backflow prevention testing for all certified device types fitted in commercial, strata and industrial properties.

Do you handle backflow testing and repairs together?

Yes. If our backflow inspection identifies a faulty device, our team can repair, recommission and re-test the backflow prevention device on the same visit wherever possible — minimising downtime and follow-up call-outs.

What is RPZ testing?

RPZ testing is the annual inspection of a Reduced Pressure Zone (RPZ) backflow prevention device — the highest level of backflow protection, used where the contamination risk is high. As accredited testers we pressure-test each RPZ valve with calibrated equipment in accordance with AS/NZS 2845.3, confirm the relief valve and check valves are operating correctly, and issue a certified report lodged with your water authority. RPZ devices must be tested every year, the same as other testable backflow prevention devices.

Do you need to turn the water off for backflow testing?

Usually only briefly, if at all. Each device takes a few minutes to test and the supply is restored straight afterwards. Depending on your site's set-up, the test may require a short isolation of the water to that device or section of the building. We confirm any likely shut-off with you when booking and work in with your operating hours so disruption to tenants and residents is kept to a minimum.

What happens if my building fails a backflow test?

If a device fails, we let you know on the day and explain the issue in plain language. Wherever possible we repair, recommission and re-test the backflow prevention device on the same visit. Where a replacement is needed we provide an upfront quote and arrange the works promptly — a failed device must be brought back into compliance within 20 business days, so we prioritise remediation and re-lodge the passing certified report with your water authority once it is rectified.

How much does backflow testing cost?

Backflow testing cost in Melbourne typically ranges based on device type, location and the number of devices on site. We provide upfront, fixed-price quotes for backflow prevention testing — no surprises and no hidden water backflow testing fees.

Do you offer discounted backflow testing for multiple devices?

Yes. Properties with multiple backflow prevention devices, or portfolios with several buildings, receive bundled backflow testing rates. We also schedule annual recurring backflow inspections so you never miss a compliance deadline.

Is the backflow testing report included in the price?

Always. Every backflow prevention testing job includes the certified test report lodged with your water authority and a copy emailed to you and your committee — included in the quoted backflow testing cost.

Are you certified to check backflow prevention devices?

Yes. Our backflow testing technicians are accredited backflow testers, so every backflow inspection and certified test report is recognised by Melbourne water authorities and councils for compliance purposes.

How often is backflow prevention testing required?

Backflow prevention testing is required annually on all testable devices. We track every device we test and send proactive reminders so your backflow prevention testing never lapses.

Do you lodge the backflow testing report with the water authority?

Yes. After each backflow inspection we lodge the certified test report directly with the relevant water authority on your behalf and provide you with a stamped copy for your records.

Is backflow testing compulsory in Victoria?

Yes. Under Regulation 12 of the Water (Estimation, Supply and Sewerage) Regulations 2014, the owner or occupier of a property fitted with a testable backflow prevention device must have it installed and tested annually by a licensed backflow plumber, with the certified report lodged with the relevant water authority. It is a legal obligation, not optional, and failing to comply can lead to penalties and the water authority taking further action.

Who is responsible for backflow testing in a strata building?

In a strata or owners corporation building, responsibility generally sits with the owners corporation for devices protecting common property and the shared water supply, while individual lot owners are responsible for any device serving their own lot. In practice the owners corporation or building manager arranges annual testing for all common-property devices. We coordinate access, testing, reporting and lodgement on behalf of committees and managers so nothing is missed.

Which areas do you cover for backflow testing?

We provide backflow prevention testing across Melbourne CBD, inner suburbs and surrounding industrial precincts — usually within approximately 20km of the city for the fastest backflow testing response times.

How quickly can you attend for backflow testing?

For routine backflow prevention testing we typically schedule within 24–48 hours. Urgent backflow inspections — for example after a failed test notice — are prioritised and often attended same day.

Can you handle backflow testing across a property portfolio?

Yes. We manage backflow prevention testing for strata managers, facility teams and asset managers with multiple buildings — coordinating site access, reporting and renewals across the entire portfolio.
Still need to speak to our backflow prevention specialist about your building? Call our commercial plumber team

Looking For Backflow Prevention Specialist In Melbourne You Can Trust?

Whether you need an urgent backflow inspection, an upfront quote on backflow testing cost or scheduled annual backflow prevention testing, Butler Plumbing is the backflow prevention specialist Melbourne building managers rely on to keep their property compliant and protected.

  • RFast local response across Melbourne CBD
  • RClear reporting for committees & owners
  • RTailored maintenance plans