25/05/2026
A lot of the work we do at LB White happens quietly.
No headlines. No fanfare. Just steady, compliant, professional backflow testing that helps keep our drinking water safe every single day.
We also test and maintain backflow prevention systems for supermarkets, hospitals, rest homes, veterinary clinics, restaurants, commercial buildings, industrial workshops, embassies, and many other local businesses across the region.
Backflow prevention devices stop contaminated water from reversing back into the public supply during pressure changes. Without proper testing and certification, public health can be put at risk.
Our role is to:
✔ Test each device
✔ Repair where needed
✔ Certify compliance
✔ Help protect Porirua’s water supply
It’s technical work. Regulated work. And it matters.
If you’re unsure whether your property requires annual backflow testing, or your certification may be due, get in touch with LB White and we’ll help get it sorted properly.
https://www.plumberswellington.co.nz/news/backflow-testing-in-porirua