What does a CCTV drain survey show?

Drain engineer viewing a monitor showing roots, cracks and standing water during a CCTV survey

Illustrative photograph showing the sort of defects a domestic CCTV drain survey may reveal.

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What to look for first

A crawler or push camera records the inside of a pipe, revealing cracks, roots, deposits and joint offsets. Check whether the operator cleaned the pipe enough to see its walls.

Before arranging disruptive work, separate what has been observed from what is only suspected. Ask whether one outlet is involved or whether several drain to the same point.

What else might cause it?

A poor-quality view can miss a concealed defect. Drainage faults can overlap with surface-water problems, poor plumbing connections or unusual weather, so timing and location deserve attention.

Getting the right work done

Ask for footage and defect descriptions, not just a verbal recommendation. Ask for a clear explanation of the problem, the proposed method and what evidence will show that the work was successful.

Safety: If sewage is backing up or overflowing, stop using the affected appliances where possible, keep children and pets away, and seek appropriate help. Never enter a drain or manhole. If wastewater is near electrical equipment, avoid the area and seek qualified advice.

Before you agree to major work

Get the proposed work and its limits in writing. For costly repairs, ask for photographs or survey evidence locating the defect and consider a second quotation. Where the affected run may be shared or adopted, check ownership before arranging privately funded work.