Drainage Specialist
A drainage specialist diagnoses, repairs, and installs drainage systems for residential and commercial properties. From blocked drains and CCTV surveys to full drainage installations and sustainable drainage systems (SuDS), they keep waste and surface water flowing safely.
What does a drainage specialist do?
Drainage specialists handle all aspects of above-ground and below-ground drainage, including:
- CCTV drain surveys and diagnostic inspections
- Blocked drain clearance using jetting equipment
- Drain repairs and relining (no-dig technology)
- New drainage installations for extensions and new builds
- Soakaway and sustainable drainage system (SuDS) design and installation
- Septic tank and sewage treatment plant installation and maintenance
- Manhole and inspection chamber construction
- Connection to public sewers (Section 106 applications)
Do drainage specialists need qualifications?
Drainage work is not a specifically licensed trade, but competent practitioners typically hold relevant industry certifications. CCTV survey operators should be trained to BS EN 13508 standards for sewer condition classification.
For work connecting to public sewers, contractors may need to be approved by the local water authority. Installers of septic tanks and sewage treatment plants should comply with the Environment Agency's general binding rules or obtain an environmental permit.
What to look for when hiring a drainage specialist
When choosing a drainage specialist, consider:
- CCTV survey capability — A pre-work survey avoids guesswork and prevents unnecessary excavation.
- No-dig repair options — Modern relining techniques are often cheaper and less disruptive than excavation.
- Water authority approvals — For connections to public sewers, ensure the contractor is approved.
- Insurance — Public liability insurance is essential, especially for excavation work near buildings.
- Transparent pricing — Drainage work can escalate quickly. Get a clear quote based on survey findings before committing.
Frequently Asked Questions
How much does drainage work cost?
A CCTV drain survey typically costs £100–£350. Drain unblocking with jetting costs £100–£250. Drain relining costs £500–£1,500 per section. A new drainage run for an extension costs £1,500–£4,000. Septic tank installation ranges from £3,000 to £8,000.
How do I know if I have a drainage problem?
Common signs include slow-draining sinks or baths, gurgling noises from drains, unpleasant smells near drains or manholes, damp patches in the garden, or sewage backing up. A CCTV survey is the best way to diagnose the issue without excavation.