The house drain (sanitary drain) is the network of underground pipes collecting discharge from every toilet, basin, shower, laundry and kitchen on the property, converging into a single line to the sewer connection.
Its layout is recorded on the property's drainage plan, though decades of renovations frequently leave as-built reality differing from the paperwork — one reason camera surveys surprise so many owners.
Collects and conveys all of a property's wastewater to the public sewer.
Buried across the property, typically 450 mm to over a metre deep.
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.