Professional Drain Mapping & Locating
Across Cambridgeshire,East Anglia, Essex, London and Kent
Accurate utility tracing and CCTV inspections in Soham and East Cambridgeshire.

One of the biggest risks during any building project is striking an unmapped utility. If you are planning an extension or significant groundworks, you need to know exactly where the drainage system sits. Hitting a live sewer pipe doesn't just cause a messy, expensive emergency; it can shut down your entire project and lead to friction with local water authorities.
By commissioning a professional drain trace, you protect your budget and your timeline. We locate the exact position, depth, and direction of your pipework. This information allows your architect to design around existing infrastructure or plan necessary diversions, keeping your build on track and within budget.

Gone are the days of digging random trial holes in your garden hoping to find a pipe. We use advanced sonar tracing combined with CCTV drain survey technology to map your system without lifting a single shovel of earth.
The process is fascinating and highly effective. We feed a camera head equipped with a specialized sonde (a radio transmitter) into your pipework. On the surface, our engineers use a digital receiver wand to track the signal. This allows us to "see" through the ground, pinpointing the location of the drain and its depth with centimetre-perfect accuracy. For complex systems where pipes merge, we can also utilise dye testing to confirm exactly where specific outlets flow, ensuring your map is comprehensive.

If your new structure falls within three metres of a public sewer, you will likely need a 'Build Over Agreement' from your local water authority. In Soham and the wider Cambridgeshire area, this is a common requirement that often catches homeowners out.
To get this agreement approved, you must provide accurate drawings showing the relationship between the proposed building and the existing sewers. Roberts Drainage Ltd provides the detailed data required to satisfy building regulations and water company standards. We give you the evidence you need to get your paperwork signed off quickly, preventing administrative delays from holding up your construction.

On larger commercial sites or housing developments, the underground network can be a chaotic web of old and new infrastructure. For developers and groundworks teams operating in East Anglia, Essex, and beyond, proceeding without a map is a liability.
We partner with construction firms to provide thorough utility mapping and detection services. By outlining the drainage infrastructure across the entire site, we help you avoid conflicts between new foundations and old assets. Whether it is a brownfield site in London or a new development in Kent, our robust reporting standards give site managers the confidence to proceed safely.