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 243 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Jorge Arias 
 2 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. The Team at Champion Plumbing & Drains were great to deal with. They were prompt and very professional at helping us deal with our toilet blockage. If your looking for a great service then these are the plumbers to call!!!
  
 
      Posted on Google  
   
   Muhammad Hakim 
 1 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Cohen was doing a great job. Happy days
  
 
      Posted on Google  
   
   Roslyn Garcia 
 30 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. Excellent service replacing my toilet today by Jeremiah and Joey.  Thanks guys really appreciate your help and professionalism.  All mess removed and super happy
  
 
      Posted on Google  
   
   emmy french 
 29 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. I would high recommend, I had great experience and no issue since my repairs
  
 
      Posted on Google  
   
   preet kahlon 
 28 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. Highly recommended.. fully fixed our bathtub and kitchen taps . thank u for fixing it and made our life easier
  
 
      Posted on Google  
   
   BECK PAIK 
 25 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. Cohen is super professional, friendly, genuine, and efficient. He quickly identified the issue and fixed it in no time. Highly recommended!
  
 
      Posted on Google  
   
   Emeline Wiramihardja 
 24 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. Thank you for your professionalism and friendly service, Cohen! You have fixed the blocked drain in my kitchen today. I’d definitely recommend Champion Plumbing & Drains to my family and friends!
  
 
      Posted on Google  
   
   Miranda Formosa 
 23 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. Julian arrived within the timeframe provided. He was efficient, polite and professional.

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