5 Signs Your Drain Needs a CCTV Survey

Your drainage system is out of sight and often out of mind—until something goes wrong. While a plunger or chemical cleaner might fix a minor sink clog, deeper issues require professional diagnosis. A CCTV drainage survey is the most accurate way to find out exactly what is happening underground.

But how do you know when it's time to call in the experts? Here are the top 5 signs that your property needs a CCTV drain survey.

1. Recurring Blockages

If you find yourself constantly unblocking the same toilet or sink, you likely have a structural issue or a severe blockage further down the line. Tree root ingress, collapsed pipes, or massive fatbergs cannot be cleared with standard plunging. A CCTV drainage survey will pinpoint the exact location and nature of the recurring blockage.

2. Foul Smells Indoors or Outdoors

A healthy drainage system should never smell. If you notice a persistent sewage odour in your home or garden, it is a strong indicator of a cracked pipe, a collapsed drain, or a severe blockage trapping waste. A camera inspection will find the source of the leak so it can be sealed.

3. Slow Draining Water

Water taking unusually long to drain from your bath, shower, or sink is often the first sign of a developing blockage. If multiple fixtures in your home are draining slowly, the issue is likely in the main sewer line. A CCTV survey can identify the scale buildup or obstruction before it causes a complete backup.

4. Damp Patches or Subsidence

Leaking underground pipes can wash away the soil supporting your property's foundations. If you notice unexplained damp patches on your walls, sinkholes in your garden, or cracks appearing in your brickwork (subsidence), a leaking drain is a prime suspect. Insurance companies will almost always require a CCTV drainage survey to investigate subsidence claims.

5. Rodent Infestations

Rats frequently use the sewer network to travel. If a pipe is cracked or a joint has become displaced, rats can easily exit the drain and enter your property's cavity walls or underfloor spaces. A CCTV drain survey is an essential pest control measure to locate and seal these hidden entry points.

Don't Ignore the Warning Signs

Ignoring these signs will only lead to more extensive damage and higher repair costs. If you are experiencing any of these issues in London or London, CleverWorks is here to help.

Get a clear picture of your drains. Book a CCTV drainage survey today or call us on 01932 544 095.