Section 104 Sewer Surveys: What They Cover and Why They Matter
Section 104 surveys are a key part of adopting new drainage systems. They’re usually required before a water authority agrees to take over responsibility for a sewer network on a new development. In growing areas across Essex, such as Rayleigh or Wickford, these surveys are an essential step for developers looking to finalise drainage infrastructure.
What Is a Section 104 Survey?
A Section 104 agreement refers to part of the Water Industry Act 1991. It allows a private developer to build sewers to an agreed standard, with the understanding that the water company will later adopt and maintain them. Before adoption, a detailed survey is carried out to confirm the sewers meet strict technical standards, giving the water authority the confidence needed to take on responsibility for the network.
What Does the Survey Involve?
The Section 104 survey usually includes CCTV drainage surveys inspections, air or water pressure testing, structural condition reports, and verification that pipe gradients, joints and materials meet the required specification. Exact requirements can vary slightly between water companies, our Thames Water Section 104 Surveys page covers the specific process for developments within the Thames Water region, for example, so it’s worth checking the requirements for your particular water authority. If faults are found, remedial work is required before the water company will sign off on adoption, which is why an accurate, early survey matters just as much as the final one submitted for approval.
Why Are Section 104 Surveys Important?
Without a successful survey, the water authority won’t adopt the sewer, leaving future responsibility, and cost, with the developer or property owners indefinitely. Early inspection helps avoid costly rework or disputes later on, giving developers a clear picture of where a system stands well before the final submission is due. From Thames Water Section 104 Surveys to many more from new housing estates or commercial builds in areas like Clacton or Epping, a compliant Section 104 survey is a vital step in keeping the handover process on track.
How Subvision Surveys Can Help
Subvision Surveys is SSIP and ISO accredited, with more than 3 decades of experience delivering CCTV drainage surveys and drainage line and level surveys in support of Section 104 applications, for developers across Essex and nationwide. We carry out the CCTV and structural condition checks a Section 104 survey requires, giving you clear, industry-standard reporting you can submit with confidence.
Contact Subvision Surveys today to discuss survey support for your Section 104 application, or speak to one of our experts on 0333 920 942.
