Backflow isn’t just a plumbing issue — it’s a serious health and safety risk. When contaminated water flows backwards into your drinking supply, it can expose your home, business or facility to dangerous pollutants, chemicals, bacteria and wastewater.

Jayco Plumbing provides fully certified backflow prevention services across Greater Sydney. With over 20 years of experience, we test, install, repair and certify all types of backflow prevention devices to ensure your property stays compliant, safe and fully protected.

Whether you run a commercial site, a strata building, a café, a medical facility or a residential property with irrigation or storage tanks — we keep your backflow system operating safely and legally.

CALL 0485 900 361 Book online

Our Backflow Prevention Services

We handle every aspect of backflow compliance.
If your council has issued a notice or reminder — we can take care of everything.

Annual backflow testing

Book Service

Backflow prevention installation

Book Service

RPZ valve installation & repairs

Book Service

Double-check valve (DCV) installs

Book Service

Pressure vacuum breaker (PVB) installs

Book Service

Thermostatic mixing valve (TMV) testing

Book Service

Backflow device repairs & upgrades

Book Service

Backflow risk assessments

Book Service

Compliance reports & certificates

Book Service

Council submissions

Book Service

Emergency repairs

Book Service

Strata and commercial compliance schedules

Book Service

Get a free quote

Have an Emergency? Call 0485 900 361

    Why Backflow Prevention Matters

    Backflow occurs when water pressure drops and contaminated water flows back into clean water lines.

    This can draw in contaminants such as:

    • Fertilisers
    • Chemicals
    • Greywater
    • Sewage
    • Industrial waste
    • Soil, dirt & bacteria
    • Rust & corrosion

    A functioning backflow device blocks this from entering your drinking water supply. In Sydney, annual testing is mandatory for commercial, industrial and certain residential properties.

    Why Choose Jayco Plumbing for Backflow Prevention?

    Your compliance and water safety are our priority.

    Licensed plumbers

    Licensed backflow-certified plumbers

    Full compliance

    Full compliance with Sydney Water regulations

    20+ years

    20+ years of backflow testing & installation experience

    Fast certification

    Fast certification & report submission

    Upfront pricing

    Upfront pricing with no hidden extras

    certify all devices

    We test, repair, replace & certify all devices

    Emergency response

    Emergency response for failed or leaking devices

    professional service

    Friendly, professional service

    5721+

    5721+ plumbing jobs completed this year

    Family-owned

    Family-owned, Sydney-based company

    Types of Backflow Devices We Install & Test

    • 1. Reduced Pressure Zone Device (RPZD / RPZ Valve)

    Required for high-risk properties such as:

    Hospitals

    Restaurants

    Manufacturing sites

    Irrigation systems

    Multi-storey buildings

    • 2. Double Check Valve (DCV)

    Used for medium-risk connections.

    • 3. Pressure Vacuum Breaker (PVB)

    Common in irrigation and outdoor systems.

    • 4. Single Check Valves

    Used for low-risk applications.

    We test and certify all device types according to Sydney Water’s standards.

    Who Needs Annual Backflow Testing in Sydney?

    • Irrigation systems
    • Commercial food premises
    • Medical facilities
    • Industrial properties
    • Fire hose reels
    • Cooling towers
    • Swimming pools
    • Rainwater tank connections
    • Chemical injection systems
    • Multi-residential complexes
    • Car washes
    • Hair salons
    • Laundromats

    Sydney Water issues reminders yearly — but even if you haven’t received one, testing is still mandatory.

    Our Backflow Prevention Process

    1.

    Assessment & Device Identification

    We identify your device type, risk category and condition.

    2.

    Backflow Testing

    We use certified testing equipment to check:

    • Pressure levels
    • Valve performance
    • Non-return function
    • Sealing integrity

    3.

    Repairs / Adjustments

    If your device fails, we repair or replace components immediately.

    4.

    Certification & Reporting

    We submit the official compliance report directly to Sydney Water.

    5.

    Compliance Reminder Setup

    We notify you before your next annual test so you never miss a deadline.

    Common Backflow Issues We Repair

    • Failed test results
    • Worn seals
    • Damaged check valves
    • Leaking relief valves
    • Incorrect installation
    • Rust/corrosion
    • Pressure loss
    • Device failure due to age
    • Non-compliant or outdated devices

    Most devices can be repaired on the spot.

    CALL 0485 900 361 Book online

    Customer Feedback Means Everything to Us

    Samantha

    “Extremely knowledgeable and carried out the work with great care. Will definitely call again.”

    Gavid

    Highly recommended Jayco Plumbing for all plumbing needs.

    Tony

    “Quick, easy to work with. A quality job at a fair price. Will use again!”

    Rami

    I couldn’t recommend this business more highly enough.

    Stephanie

    “JJ came at short notice and did a terrific job. Highly recommend this business.”

    Tasnem

    Highly recommend them for anyone needing reliable plumbing services!

    We take pride in the trust our customers place in us — and we earn it every day.

    Proudly Serving the Entire Sydney Region

    Jayco Plumbing covers all of:

    • Sydney CBD
    • Inner West
    • Eastern Suburbs
    • Western Sydney
    • Northern Beaches
    • North Shore
    • Hills District
    • St George
    • Sutherland Shire
    • South West Sydney
    • Penrith & surrounds

     

    Check Our Service Areas

    Frequently Asked Questions

    Got more questions?

    CALL 0485 900 361

    Need Certified Backflow Testing or Installation? Call Jayco Plumbing.

    Fast, compliant, professional backflow services anywhere in Sydney.
    Keep your water supply protected and your property fully compliant.