Backflow Prevention in the Illawarra
Sydney Water requires testable backflow prevention devices on most commercial and many residential properties — we install, test annually and lodge the Form A reports on your behalf.
Local backflow prevention you can actually rely on
Backflow prevention stops contaminated water from being siphoned back into the drinking-water main — and Sydney Water enforces it. Any property classed as medium or high hazard (commercial kitchens, medical and dental, industrial, dual-occupancy with shared meter, irrigation systems, fire services, properties with rainwater tank crossover) requires a testable backflow prevention device installed at the boundary and tested annually by a licensed plumber with a current backflow testing endorsement.
We install and test RPZD (reduced pressure zone), DCV (double check valve) and PCDCV (pressure-loaded check) devices across the Illawarra — café and restaurant fitouts in Shellharbour and Wollongong, dental and medical suites, childcare and aged care, commercial irrigation in Kiama and the rural fringe, and residential properties with rainwater tanks plumbed back into the house. Each test produces a Form A report that we lodge directly with Sydney Water — you don't need to chase it.
We also run scheduled annual testing reminders so the report never lapses (an expired backflow report on a commercial site is a Sydney Water non-compliance notice waiting to happen). All testing is to AS/NZS 2845.
Signs you need a backflow prevention plumber
If any of these sound familiar, call us on 0466 442 293 — we'll talk it through and book you in.
- Sydney Water notice requiring testable backflow device
- Commercial premises (café, medical, dental, childcare)
- Rainwater tank plumbed back into the house
- Irrigation system on mains water
- Annual backflow report due or overdue
Our backflow prevention process
Install
Correctly-sized RPZD / DCV at the boundary, with isolation valves and access for testing.
Test
Annual test to AS/NZS 2845 with a calibrated gauge kit, results recorded on Sydney Water Form A.
Lodge
Form A report lodged with Sydney Water and emailed to you for your records.
Schedule
We diarise the next annual test so it never lapses.
Most backflow prevention jobs across Shellharbour, Kiama and Wollongong are attended the same day you call — 24/7 for emergencies.
Fully licensed plumber and gas fitter, $20m public liability cover, Certificates of Compliance lodged with NSW Fair Trading.
We carry common parts for tap, toilet, drain and hot-water jobs on the van, with fast supplier access for anything more specialised — so most repairs are done permanently on the first visit.
Every repair and install is backed in writing — if anything isn't right, we come back. No fight.
The Illawarra's licensed backflow prevention specialists
Ready to book your backflow prevention job?
Serving the entire Illawarra from our Shellharbour base.
Recent backflow prevention jobs across the Illawarra
Real on-site photos from backflow prevention work we've completed across Shellharbour, Kiama and Wollongong.
Boundary fire service, booster valves and testable backflow device installed to AS 2845 for a new childcare centre.
Annual testable backflow device — pressure-tested with a calibrated gauge and lodged with Sydney Water.
Backflow Prevention — FAQ
Quick answers about our backflow prevention service. Don't see your question? Browse all FAQs or call 0466 442 293.
Backflow Prevention — areas we cover
Local backflow prevention across the Illawarra — Shellharbour, Kiama and Wollongong LGAs.
Related services
- Commercial PlumbingFitouts, maintenance contracts and reactive work for Illawarra businesses.
- Rainwater Tank InstallationTank supply, install, pump and crossover plumbing for house & garden use.
- Emergency Plumbing24/7 rapid-response plumbing across the Illawarra.
- Blocked DrainsCCTV-located, jet-cleared blockages — fixed properly, not just shifted.