Homeowner services
Backflow prevention and RPZ valves
Backflow is when water flows the wrong way and can bring hazardous substances into your clean water supply, a serious health risk for your family and home.
A backflow prevention device protects your supply from things like sprinkler and irrigation systems, water pumps and wastewater connections. These devices need regular testing and inspection to keep working and stay compliant.
We inspect, install, test, repair and maintain a range of backflow prevention devices. Our accredited testers handle the test and the paperwork, and lodge the report with Sydney Water for you.
Backflow prevention
When you need backflow prevention
Backflow prevention devices protect the clean water supply from contamination. These are common situations where a device, or testing of an existing device, is needed.
- Irrigation or garden watering systems connected to mains water
- Pumps, rainwater tank top-ups or fire systems connected to the supply
- Properties with connections that could let water flow back into the mains
- An existing device that is due for its regular test
- A device that is leaking or has failed its test
- New work that requires a device to meet local requirements
Backflow prevention
How we do it
- 1
Inspection
We assess the condition of your backflow prevention system.
- 2
Installation
RPZ valves and backflow devices installed to code.
- 3
Testing
Regular testing to confirm it's working.
- 4
Maintenance
Routine servicing to prevent problems.
Why TM Pro
Why choose us for backflow prevention
Accredited testers
Experienced, accredited backflow testers.
Local compliance
Devices installed and tested to local requirements.
The right tools
Proper equipment for RPZ valve installs.
Reports lodged for you
We lodge your test reports with Sydney Water.
Licensed and insured
Licensed, insured plumbers on every job.
Ongoing maintenance
Regular servicing to keep devices working long term.
Frequently asked questions
Backflow prevention FAQs
What is backflow?
Backflow is when water flows the wrong way through the pipes. It can draw contaminated water back into your clean supply.
What is an RPZ valve?
An RPZ (reduced pressure zone) valve is a type of backflow prevention device used where the risk of contamination is higher. It stops water from flowing back into the supply.
Do backflow devices need testing?
Yes. Backflow devices need regular testing to make sure they're working and to stay compliant.
Who lodges the test report?
Our accredited backflow testers carry out the test and lodge the report with Sydney Water for you.
Service areas
Areas we service
We provide backflow prevention and RPZ valve services across Sydney, including Wolli Creek, St George and Sutherland Shire, Inner West, Central Sydney, Eastern Suburbs, Lower North Shore and Campbelltown.
Related services
Backflow prevention
Need a plumber? Get a quote.
Monday to Friday, 7am to 5pm. Up-front pricing with no hidden extras.