Detailed investigation to identify the cause of drainage problems in London properties.
Free, no-obligation — we'll call you back fast.
A drainage investigation CCTV survey diagnoses the cause of persistent or unexplained drainage problems in London properties. Where a property has recurring blockages, mysterious smells, or unexplained slow drainage, a CCTV survey provides the definitive answer that no amount of rodding or chemical treatment can offer. Furthermore, the survey produces visual evidence — still images and HD video — that you can share with insurers, Thames Water, or a freeholder to support a claim or repair request. We survey the drain system from all accessible points, mapping the layout and identifying all defects to WRCm classification. In addition to identifying the immediate cause, an investigation survey often reveals secondary issues that explain why previous clearance attempts failed. Therefore, instead of paying for jetting every six months on the same recurring blockage, you receive a single clear diagnosis and a costed remediation plan that resolves the problem permanently. As a result, our investigation customers typically eliminate repeat call-outs entirely once the underlying defect is repaired or relined. That said, where the defect lies in a Thames Water-adopted pipe section, we produce reports to the standard accepted by the water company and provide the supporting evidence you need to make them carry out the repairs at no cost to you. All footage and reports are emailed within 48 hours and retained for two years for future reference.
Discuss symptoms to determine the best survey approach
Access drain from all available points
Camera survey of all suspect drain runs
Fault analysis and defect classification
Written report with recommendations and, if needed, Thames Water escalation support
Drainage investigation surveys in London cost £150-£350 for standard residential systems. More complex investigations involving multiple drain runs, difficult access, or large drainage systems are priced individually.
Yes. A CCTV survey that locates and documents a defect in a Thames Water-adopted pipe section provides the evidence needed to require Thames Water to carry out repairs. We produce reports to the standard accepted by Thames Water and can advise you on the escalation process.