CCTV Drainage Survey, Drain Mapping or Utility Survey: Which Do You Need?

Three surveys that are often confused. Here is what each one tells you, and when a commercial site needs more than one.

By Ambler Group Surveys · Updated

CCTV drainage survey: condition

A CCTV drainage survey sends a camera through the pipes to record their condition. It finds cracks, collapses, root intrusion, displaced joints, blockages and other defects, and records where they are. It answers the question: what state is the drainage in?

  • Best for: defects, purchases, dilapidations, maintenance planning, pre-handover checks
  • You get: graded defect report, footage, photographs, recommendations

Drain mapping: location and layout

Drain mapping records where the drainage is, how deep it is and how it connects. Chambers are lifted and levelled, runs are traced and the network is drawn to scale in CAD. It answers the question: where is the drainage and where does it go?

  • Best for: design, extensions, missing records, misconnections, estate records
  • You get: scaled drawing with cover and invert levels, pipe sizes and flow directions

PAS128 utility survey: every buried service

A PAS128 utility survey locates and maps buried services of all kinds – water, gas, electric, telecoms and drainage – using electromagnetic location and ground-penetrating radar, and records them to a defined quality level. It answers the question: what is buried here before we dig?

  • Best for: excavation, design, avoiding service strikes
  • You get: utility drawing with services and quality levels

When to combine them

On most construction and redevelopment sites you need all three: the utility survey to find every buried service, drain mapping to record the drainage layout and levels, and CCTV to confirm the condition of anything being kept. Ambler Group delivers all three, so they can be done in one visit with one coordinated drawing.

Need a drainage survey? Call 0345 548 5451 or email us with your site plan for a fixed quote.

Which survey do you need? in Central Scotland | Frequently Asked Questions

Q1: Does a utility survey include drainage?

A: A PAS128 utility survey locates drainage alongside other services, but it does not record the internal condition of the pipes. For condition you need a CCTV drainage survey.

Q2: Does a CCTV survey produce a drawing?

A: A basic drain layout is included. For a scaled drawing with levels and depths, add drain mapping.

Q3: Can all three be done on the same visit?

A: Yes. Combining them saves mobilisation costs and gives you one coordinated set of drawings.

Ambler Group surveyor working at an inspection chamber

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For a fast, fixed quote, send us:

  • The site address or postcode
  • A site plan or marked-up aerial image showing the areas to survey
  • What the survey is for – purchase, design, handover, maintenance or a defect
  • Access notes – working hours, permits, inductions

We usually come back with a fixed quote the same or next working day.

  • Locations:

    5 South Charlotte Street,
    Edinburgh EH2 4AN

    Ambler Group Limited
    Springfield House, Springfield Road,
    Horsham RH12 2RG

    Company registration number: 12568344

  • Surveyors based in:

    Glasgow and Falkirk, covering Glasgow, Edinburgh, Falkirk, Cumbernauld, Stirling, Perth and the rest of Central Scotland.

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