What should I do if my drain is overflowing outside? +
If an external drain or manhole is overflowing, check whether it is a shared drain serving multiple properties. Since October 2011, lateral drains and public sewers became the responsibility of your water company, so contact them first if the blockage is beyond your property boundary. If it is a private drain within your boundary, call a drainage engineer in Derby to clear the blockage.
What is the NADC and why does it matter? +
The NADC — National Association of Drainage Contractors — is the leading UK trade body for drainage professionals. NADC members must demonstrate competence, carry appropriate insurance, and adhere to a code of practice. Choosing an NADC-registered drainage engineer in Derby gives you confidence that the work will be carried out to professional standards with proper equipment.
What causes a foul smell from my drains in Derby? +
Foul drain smells are usually caused by a dried-out trap (the U-bend), a cracked or disconnected pipe, or a blockage building up in the system. If the smell is coming from outside, it could indicate a broken manhole cover seal or a collapsed section of drain. Run water through any infrequently used sinks or showers to refill their traps first. If the smell persists, a CCTV drain survey will identify the cause.
What equipment should a professional drainage engineer have? +
A properly equipped drainage engineer should have high-pressure water jetting equipment (typically 3,000+ PSI), a CCTV drain camera for surveys, electro-mechanical cleaning machines, drain rods, and root cutting attachments. They should also carry personal protective equipment (PPE) including gloves, eye protection and waterproof clothing. Be wary of anyone who turns up with just a set of drain rods — they will struggle with anything beyond a minor blockage.
Do slow-draining sinks always mean a blocked drain? +
Not always. A slow-draining sink is often caused by a localised blockage in the waste trap or the pipe immediately beneath the sink — hair, soap scum and grease are common culprits. However, if multiple fixtures are draining slowly or you notice gurgling sounds, the problem is likely further down in the main drain. A drainage engineer in Derby can distinguish between a simple waste pipe blockage and a more serious drain issue.
Can I unblock my own drain or should I call a professional? +
Simple blockages near plugholes can sometimes be cleared with a plunger or drain snake. However, if you have sewage backing up, multiple drains blocked at once, or persistent foul smells, you should call a professional drainage engineer in Derby. Using chemical drain cleaners on severe blockages rarely works and can damage older clay pipes. Professional high-pressure jetting is far more effective and safer for your drainage system.