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Plumbing Knowledge Centre

CCTV Drain Camera Inspections

How drain cameras reveal roots, cracks, displaced joints and hidden restrictions without unnecessary excavation.

11 min readPublished Reviewed for practical accuracy

A CCTV drain camera allows a plumber to view the inside of an accessible pipe. It is especially useful when blockages recur, a structural defect is suspected, or excavation needs to be targeted rather than based on guesswork.

Before you worry

A camera cannot see through muddy water or a solid blockage. In many cases the line must first be cleared enough for the lens to travel and for defects to become visible.

How to recognise the problem

  • The same drain blocks repeatedly.
  • Roots or broken pipework are suspected.
  • There is unexplained sewer leakage or ground movement.
  • A property owner needs evidence before repair.
  • A new installation or repair needs verification.

Common causes

  • Cracks and fractures.
  • Root entry at joints.
  • Displaced or open connections.
  • Partial collapse.
  • Scale, grease and foreign objects.
  • Poor gradients or standing water.

What you can safely check yourself

  • Provide the history of previous blockages and repairs.
  • Ensure inspection points are accessible.
  • Ask for the defect location and recording where practical.
  • Keep wastewater areas isolated.

What you should never do

  • Do not accept a vague camera result without identifying the affected section.
  • Do not assume every visual mark requires excavation.
  • Do not push a camera through a fully blocked line by force.

When to call a plumber

Camera inspection is valuable after recurrent blockages, suspected root intrusion, unexplained sewer odours, subsidence near drains, or before major repair decisions. It can also verify whether cleaning has removed the obstruction.

How professionals solve it

The plumber introduces a suitable camera through an access point and records the pipe interior. Distance counters and locating equipment may help mark the defect above ground. Findings should be interpreted with the pipe layout, flow behaviour and cleaning history.

How to prevent it happening again

  • Keep inspection points accessible.
  • Retain footage and location notes.
  • Repair confirmed defects promptly.
  • Use follow-up inspection after root removal or structural work.

Frequently asked questions

It can show visible defects and help locate them, but some leaks require additional testing because water may escape through a defect not clearly visible on camera.

Not necessarily. A simple isolated blockage may not justify it, while recurring or structural problems often do.

Yes, where access, pipe size and conditions allow.

Practical plumbing support

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