
Your water safety is non-negotiable
Protect Your Water Supply & Stay Compliant
Protect your business and meet authority requirements with our certified back-flow prevention and TMV testing services across Wollongong to Sydney.
✓ Certified testing and compliance documentation
✓ Annual testing for all device types
✓ Installation of new prevention systems
✓ Complete authority submission paperwork
✓ Protect against water contamination
Certified Testing & an Installation You Can Trust
Our certified technicians provide comprehensive back-flow prevention and TMV testing services that protect your family's health while keeping you compliant with authority regulations. We handle everything from annual testing requirements to new device installations, ensuring your water systems meet all safety standards.
Trust Above & Below for testing that counts. We're fully qualified to test and certify all back-flow prevention devices and thermostatic mixing valves, providing complete documentation for authority submission. With our efficient service, accurate reporting, and competitive pricing, you'll maintain compliance without the hassle - plus gain confidence that your water supply is properly protected.
Our Installation Process
Step 1: Free Consultation & Quote
We assess your space, discuss your needs and preferences, and provide a detailed quote with no hidden costs.
Step 2: Design & Planning
Our team creates a detailed installation plan, helps you select fixtures, and schedules the work around your availability.
Step 3: Professional Installation
Licensed plumbers complete the installation using quality materials, following all relevant codes and regulations.
Step 4: Final Inspection & Handover
We conduct thorough testing, provide care instructions, and ensure you're completely satisfied with the finished result.

Quality Plumbing When You Need It
Your Peace of Mind Guaranteed
-
Upfront Pricing
There are no surprises when it comes to cost. We will provide a quote before the commencement of any work.
-
Lifetime Labour Warranty
We guarantee our high quality workmanship by providing a lifetime labour warranty. Our team are highly skilled and dedicated.
-
Constant Communication
From guaranteed response times to your initial enquiry to the completed job, we will keep in touch throughout the project.
-
Cleanliness
Our team prides itself on cleanliness and will never leave a mess. We will leave your home or site just as we found it.
-
Back-flow prevention stops contaminated water from flowing back into your clean water supply. It's required by law in many situations to protect public health. Back-flow can occur when water pressure drops or pumps create reverse flow, potentially contaminating drinking water with chemicals, bacteria, or other harmful substances.
-
Testing is typically required annually for commercial properties, properties with irrigation systems, swimming pools, fire sprinkler systems, medical facilities, and industrial connections. Residential properties may need testing if they have certain appliances or connections. Local councils set specific requirements.
-
Thermostatic Mixing Valves (TMVs) blend hot and cold water to deliver safe temperatures, preventing scalding. They're mandatory in aged care facilities, childcare centers, schools, and many commercial buildings. Regular testing ensures they're functioning correctly and meeting safety temperature requirements.
-
Back-flow prevention devices typically require annual testing, though some high-risk installations may need more frequent testing. TMVs generally need annual testing, but healthcare facilities may require more frequent checks. We'll advise on the specific requirements for your property type.
-
If devices fail testing, we'll explain the issues found, provide quotes for necessary repairs or replacements, and can often perform the work immediately. We'll also provide temporary solutions if needed and ensure you meet compliance requirements as quickly as possible.
-
Yes, we provide complete documentation including test certificates, compliance reports for council submission, detailed test results, recommendations for any required actions, and maintenance schedules. We keep records for your ongoing compliance requirements.
-
Absolutely. We're qualified to install, test, and maintain all types of back-flow prevention devices including RPZ valves, double check valves, and reduced pressure assemblies. We'll assess your requirements and recommend the appropriate device for your situation.
-
Testing starts at $220 for the first device, with pricing depending on complexity. When multiple devices are tested during the same visit, we offer discounted rates for the additional units. Installation of new devices are quoted separately based upon specific requirements. Contact us to find out more.
Frequently Asked Questions
Don’t Take Our Word For It
What Our Clients Say
I would like to thank Above and Below Projects admin person Madi for her refreshing honest and understanding help in organising a quote and time for a plumber today.
And I would like to specifically highly commend the plumber , Max, who resolved my plumbing matter (leaking kitchen taps) that I could not resolve myself.
Max was right on time, and did not mess around in focusing on the issue and helped explain where I went wrong. He was super efficient, knowledgeable, and step by step with purpose, rebuilt the taps that now work as smooth as a rolls Royce engine and not a leak in sight.
Max also continually checked with me alternative choices to suit my budget…I am relieved everything is now back in order.
I was seriously impressed with Max and his nature and manner and work ethic.
Thanks Above and Below Projects.
- John Connors
If you’re after a fast and efficient plumbing service please contact Justin and the team!!!!
I was blown away by how helpful and knowledgeable he is and he’s so happy to be flexible for families or people with a crazy busy schedules!
Can’t thank him enough! Will definitely be contacting him next time!! 👏🏻👏🏻👏🏻👏🏻
- Leah Wellard
Spoke to Justin in the afternoon and explained what I wanted done and he was around the next morning bright and early.
He cleaned my downpipe drains and also found parts of the drainage broken. I originally asked for a quote on this work and some more water issues and I was very pleased with his professionalism and friendly demeanour.
Work was done very quickly and quote given for the rest of the work. Having already attained other quotes, his quote was great, with new ideas to bring down the costs of some of the work.
Very pleased with Justin and the way he conducts his business.
- Robyn Blood
Areas We Service
Above & Below services Sydney, Western Sydney, the Southern Highlands, and locations along the east coast. Our coverage area extends based on project requirements, ensuring we can deliver our premium services wherever you need them.
Below are just some of the prominent areas we service.
Cronulla
Miranda
Caringbah
Engadine
Hurstville
Kogarah
Rockdale
Sydney
Wollongong
Shellharbour
Kiama
Dapto
Thirroul
Corrimal
Fairy Meadow
Helensburgh
Ready to Get Started?
From Wollongong to Sydney, Above & Below is your trusted partner for all plumbing and roofing needs. Contact us today for your free consultation and discover why businesses and families across the region choose us for their most important projects.
📞 Call now: (02) 4244 4626
📧 Email: Hello@aboveandbelowprojects.com.au