Backflow Prevention
& Testing In Sydney

Annual compliance, done properly

$0* call-out fee

Licensed backflow testing

Annual compliance certificates

Testable device install

Get a fast free quote

What our customers say

      EXCELLENT  
   Based on 256 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Caitlin Stanbury 
 19 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. We had a detected gas leak along with other taps and showers leaking throughout the house. Adam came out to do all the repairs in a timely professional manner, would recommend this company for affordable, fast and friendly service.
  
 
      Posted on Google  
   
   Nathan Howe 
 16 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. We had the team out to unblock a grease build up. Cohen was efficient and quick. He left our property tidy and completed the job successfully!
  
 
      Posted on Google  
   
   Michael Bell 
 15 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Julian fixed our leaking shower. He got the job done and provided a friendly, professional service. Thanks!
  
 
      Posted on Google  
   
   Jacqueline Karauwan 
 14 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. The job was completed very quickly, and the staff were very friendly and professional. Excellent service overall!
  
 
      Posted on Google  
   
   Attia Asad 
 9 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. There was very great service.
  
 
      Posted on Google  
   
   kriti chitranshi 
 8 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Great experience. Punctual, polite and the job was done very professionally.
  
 
      Posted on Google  
   
   Carmy A 
 7 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. We couldn’t be happier with the work and service we received. The young plumber was professional, reliable and clearly took pride in doing the job properly. The work was completed to a very high standard, everything was left clean and tidy, and the whole process was handled efficiently and with care.
It’s such a relief to find someone you can genuinely trust to do a great job without any fuss. We would absolutely recommend them to anyone looking for a skilled, honest and professional plumber.
Thank you for the fantastic work — we really appreciate it! 👏🔧

What Is Backflow Prevention?

Under normal conditions, water flows one way, from the mains into your property. Under certain pressure conditions, water can flow backwards. If that happened with contaminated water from an irrigation system or swimming pool, it’s a public health issue. Backflow prevention devices are one-way valves that physically prevent reverse flow.

Who needs backflow testing and why it’s important

Backflow testing is essential where there’s a chance of contamination entering the drinking water supply. If you have a backflow preventer on your property, regular testing is required by NSW and water authority regulations.

This generally applies to:

Commercial and industrial buildings

Cafes, restaurants, and food establishments

Medical and
dental offices

Properties with irrigation systems or fire services

Certain residential properties

Annual testing ensures your backflow device is working correctly and helps you stay compliant, reducing the risk of council notices, fines, or service restrictions.

Our backflow testing process

We keep it simple and effective.

Inspecting the backflow preventer and spotting any cross-connection risks
Conducting backflow device testing with calibrated equipment
Issuing certification once the device passes the test
Ensuring compliance with council and water authority standards
Sending reminders for future annual testing

Do You Need a Backflow Preventer?

Sydney Water requires testable backflow prevention devices for: properties with irrigation systems connected to the mains / properties with swimming pools or spas topped up from the mains / commercial premises / multi-storey buildings and certain residential developments.

If you’ve received a notice from Sydney Water or your council, call us on (02) 9784 2401. We carry out the installation and handle all compliance documentation.

Safe Hands. Reliable Service. Champion Results.

Champion Plumbing Services

Blocked Drains

Blocked drain backing up at home. We’ll clear it the same day, with upfront pricing before we start.

Hot Water Plumbing

No hot water. We stock parts for most brands and often fix it on the spot, $200 off replacements.

Gas Plumbing

Smell gas in the house. Don’t touch a switch, call us. Licensed gas fitters on call 24/7.

Leak Detection

Water bill creeping up with no visible leak. We locate it without tearing up your property.

Pipe Relining

Cracked or root-damaged pipes underground. We reline from inside, no digging your yard. Built to last 40 to 50 years.

Emergency Plumbing

Plumbing emergency right now. We aim to arrive within the hour, day or night.

FREQUENTLY ASKED
QUESTIONS

How much does backflow testing cost in Sydney?

Annual backflow compliance testing is a fixed-price service for residential properties with a backflow prevention device. We submit the results to Sydney Water on your behalf. $0* call-out fee. See our full pricing.

Why do I need backflow testing on my property?

Sydney Water requires annual testing on backflow prevention devices to confirm they’re still stopping water from your property contaminating the mains supply. Properties with irrigation systems, pools, and certain hot water configurations need a registered backflow device tested every 12 months.

How long does backflow testing take?

On-site testing takes 30 to 60 minutes for a standard residential device. We then submit the test certificate to Sydney Water within their compliance window. Call us today to book your annual test.

Are you accredited to test backflow devices in NSW?

Yes. The team holds the backflow prevention accreditation required by Sydney Water, alongside the Licence No. 371639C plumbing licence. Test certificates are lodged with Sydney Water automatically once the device passes. Lifetime labour guarantee on any repair work needed if the device fails.

Get a 15-minute callback

No call out fee. Plumber dispatched same-day.

Call now for immediate assistance.

Backflow Prevention
& Testing In Sydney