Drainage Investigation vs CCTV Drain Survey: What Is the Difference?

A CCTV drain survey is one of the most useful tools for understanding a drainage system, but it is not always the whole investigation. The difference matters when a site has a recurring drainage problem and needs to know what to do next.

A CCTV survey uses camera equipment to inspect pipework and record visible defects, blockages or changes in condition. It is often the right choice when the site needs clear visual evidence of what is happening inside the drain.

A drainage investigation is broader. It may include CCTV, but it also looks at the symptoms on site, manhole locations, flow direction, previous blockages, surface water behaviour and how the system is being used. This wider view can be important where the same drain keeps blocking, where flooding happens in one area, or where the cause is not visible from one camera run alone.

For straightforward inspection work, Mantank provides CCTV drain surveys. Where the cause is less clear, our drainage investigation service helps connect the evidence and identify the next practical step.