Why are CCTV Drain Surveys Required? What are its Benefits of it? When it comes to pipework blockage, then CCTV drain inspections are so much necessary. It's like a remote-controlled camera going through the tunnels to take pictures. The drain experts can find the exact causes of why the drains are not working properly. The CCTV Cameras provide an exact view of how the drains are working. Whether it's residential or commercial properties, Cleared Blocked Drain Bournemouth is the priority of all the people. The cameras are known to provide accurate inspections and help in the process.