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Drain survey reports

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Drain Survey Reports

Drain and sewer condition is often established by passing a CCTV camera (with lighting) through the pipework and recording video footage. The CCTV camera system will also measure distance traveled so that any defects noted can be accurately located. Issues that affect drain systems include operational problems that might affect the flow and structural problems that will affect the mechanical integrity of the drain and potentially the flow. Issues that affect the drain#'s water tightness, structural integrity or flow are deemed the most serious.


The information from a drain survey is normally presented as a report. The UK and European standard for reporting is BS EN 13508-2. This standard and the Manual of Sewer Condition Classification (MSCC5) specify drain and sewer condition codes. The manual is published by the Water Research Centre (WRc) who are the arbiters of the water industry in the UK. The standard is used throughout the world in varying forms. The information contained within the report includes header information about the section of drainage being surveyed, standard codes to indicate the condition, the position of defects, photographs of defects and video footage of the survey.


The condition of the whole section surveyed is designated by the defects within that section. The grade of a sewer is generally based on the peak operational and structural defect. This provides a grade of 1 to 5, where 5 is more severe. Drains are graded in a similar manner but using DRB grades A, B and C, where C is the most severe.

Reporting Software

Reports can be created using bespoke software packages that conform with the standard. In the UK the only WRc approved application for domestic drain survey reports is provided by a company called Viewline.

Drain Survey Reports[edit | edit source]

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