Backflow Testing & Prevention By Certified Backflow Plumbers – Auckland Wide Including the North Shore                   

What is backflow?

Backflow is when water flows backward into the public water supply network. This is caused when water pressure drops in the water distribution system causing water to flow in the opposite direction.

Backflow is one of the biggest risks to the water supply. It is a potential source of contamination that can seriously affect the quality and safety of our drinking water.


IQP Annual Backflow Testing

Auckland Council require that as part of the annual Building Warrant Of Fitness (BWOF), all backflow prevention devices must be inspected and tested annually by an Independently Qualified Person (IQP). This applies to commercial buildings and also some residential buildings if they are deemed a “high or medium risk site”.

MCB Plumbing offer a reliable & professional Backflow Testing service in Auckland at competitive rates. For your annual Backflow Testing or if you are unsure of your obligations, talk to the experts at MCB.


Backflow Prevention

NZ building code requires that every property owner must prevent backflow either by providing an adequate air gap or by using a backflow prevention device. Commercial properties are required to include backflow prevention as part of the Auckland council consent process.

MCB Plumbing are experienced in all aspects of backflow prevention services. We offer expert advice on the regulations and options available. We can supply the appropriate backflow preventer device for the property requirements, and offer a cost-effective installation service.


Backflow Testing & Prevention services:

  • Annual Backflow Testing
  • Backflow Device Inspections
  • Backflow Prevention Assessment & Advice
  • Backflow Plumbing Services
  • Backflow Preventer Device Supply & Installation


Auckland Wide Service – North Shore, Central Auckland Suburbs, West Auckland & East Auckland.


For all your plumbing needs, including backflow testing, repairs, installation & maintenance call us on 0800 002 314 or email us at




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