Protecting your water supply with certified backflow preventer inspection and installation
What Is Backflow?
Backflow can pose a serious risk to your drinking water if left unchecked. BC Plumbers are Christchurch’s trusted experts in backflow preventer inspection. We install, test, and maintain certified devices to keep your property compliant and your water supply safe.
Who Needs a Backflow Prevention Device?
Backflow prevention is mandatory for many commercial, industrial, and multi-unit residential properties in Christchurch.
Typical examples include:
- Cafés, restaurants, and commercial kitchens
- Schools, hospitals, and rest homes
- Factories and workshops
- Apartment buildings and multi-unit dwellings
- Irrigation or garden sprinkler systems
- Sites using chemicals or cleaning agents near water supplies
If you’re unsure whether your property requires a device, our qualified team can assess your setup and advise on your obligations.
Certified Testing and Compliance
BC Plumbers are registered IQP (Independent Qualified Persons) — authorised to test, repair, and certify backflow prevention devices in accordance with Christchurch City Council and Taumata Arowai regulations.
Our Backflow Services
Testing & Certification
- Annual compliance testing
- Full inspection and performance check
Installation & Replacement
- Supply and installation of new devices
- Guidance on choosing the right type (RPZ, DCV, or PVB)
- Upgrades and replacements for failed or outdated systems
Maintenance & Repairs
- On-site fault diagnosis and repair
- Preventive maintenance schedules
- Urgent call-outs for failed test results
How It Works
- Book Your Inspection – Contact us via phone or use the form below to schedule your backflow test.
- Site Visit & Assessment – Our certified tester inspects your device and performs the test.
- Compliance Report – Results are logged, and certification is provided.
- Ongoing Reminders – We’ll notify you before your next annual test is due.
Why Choose BC Plumbers for your backflow preventer inspection requirements?
Throughout Christchurch and the greater Canterbury region
- Registered IQP testers – certified and council-approved
- Experienced, qualified plumbers with a can-do attitude
- Trusted by commercial and residential clients across Canterbury
- Local Christchurch specialists
- Fast, efficient testing with no disruption to your business
- Transparent pricing and digital record-keeping
WHAT OUR CUSTOMERS HAVE TO SAY
Frequently Asked Questions about Backflow Preventer Inspection
How often do I need to test my backflow preventer?
Most devices must be tested annually by a certified IQP tester to meet council compliance.
What happens if my device fails the test?
We’ll diagnose the issue, carry out repairs or replacement, and re-test to ensure full compliance
What’s the difference between RPZ, DCV, and PVB devices?
These refer to different device types based on hazard level — our team will recommend the right one for your property.
Book your backflow test today
Fill out this form and we will be in touch to discuss your requirements.