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Backflow prevention and testing
Backflow testing for your property.
EKORP can inspect and test backflow devices, then discuss any repair work that may be needed. Confirm your site's requirements with the relevant water authority.
Where’s the job?
Backflow prevention exists for one reason: to stop contaminated water flowing backwards into the clean supply your taps use. Whether a property needs a device or regular testing depends on its plumbing setup and the requirements of the relevant water authority.
EKORP can inspect and test devices, then explain the results and any repair options. Before booking, confirm the testing and reporting requirements that apply to your site.
What happens during the test
Your tester isolates the device and connects calibrated test equipment to assess its operation. The exact process depends on the device and site. The plumber will explain what they are checking and what the result means.
We test and install the main device classes: Reduced Pressure Zone Devices, Double Check Valves, Pressure Vacuum Breakers and dual check valves. The right device for a site depends on its plumbing and authority requirements.
Who needs a backflow device
Any property connected to a council water main with certain fixtures or connections may need one. Confirm what applies to your property with the relevant water authority. Common examples can include:
- In-ground irrigation systems connected to mains water
- Fire sprinkler or hose reel systems
- Swimming pools with mains top-up connections
- Commercial equipment such as dishwashers or cooling towers
- Any connection involving chemicals or non-potable water
Not sure where you stand? Check with your water authority, then call EKORP to discuss the plumbing work your property may need.
What backflow testing costs
Costs depend on the device, the site and the work required. EKORP can discuss the job and provide a quote before the proposed work begins.
If your device fails
The plumber will explain the issue and the available repair or replacement options. Confirm any follow-up testing or reporting requirements with your water authority.

Call to discuss your site and the backflow work you need.
Call 02 8667 5354Contact us →Backflow services
Understand your backflow requirements.
Backflow requirements can vary by property and water authority. EKORP can help you understand the work involved.
The team can inspect your backflow device and discuss the work your site may need.
If repairs or replacement are needed, the team will explain the options and cost before work begins.
Confirm your site's testing, reporting and timing requirements with the relevant water authority.
Questions
Common backflow prevention questions.
Here are clear answers to common questions. Call us if you need help with something else.
What is backflow prevention and why is it important?
Backflow devices help protect the drinking-water supply from water flowing in the wrong direction. Requirements depend on the property, its plumbing and the local water authority.
How often does a backflow device need testing in NSW?
Testing requirements vary by device, site and water authority. Confirm the current requirements and timing for your property with the relevant authority.
How do I know if my property requires backflow prevention devices?
Some irrigation, fire-service, pool and commercial-water connections may need a backflow device. Speak with your water authority and a qualified plumber about your specific site.
What happens if my backflow device fails testing?
If a device needs repair or replacement, the plumber can explain the condition, available options and the work required. Check any reporting requirements with your water authority.
What are the costs involved with backflow testing and repairs?
Costs depend on the device, site access and work required. Contact EKORP to discuss your site and receive a quote for the proposed work.
