AS/NZS 3500 is the multi-part standard behind nearly every rule a plumber follows: pipe sizing, minimum gradients, venting, trap seals, stormwater design and more. Regulators adopt it through the Plumbing Code of Australia, giving it legal force.
For homeowners, its practical meaning is simple: compliant work follows tested engineering rules — gradients that self-clean, vents that protect trap seals, and materials fit for purpose.
Sets the technical requirements for plumbing and drainage work in Australia.
Applied to all regulated plumbing and drainage design and installation.
A CCTV drain inspection is the standard way to confirm whether this is what's happening in your pipes: the camera shows the condition on screen, a locator pinpoints the exact position and depth, and you get a recorded report before any repair decisions are made.
A CCTV drain inspection shows exactly what's happening inside your pipes — no guesswork.