In the contemporary world, technology has become an integral part of various sectors, including the drainage and sewerage industry. The use of Closed-Circuit Television (CCTV) for drain surveys has revolutionized the way drainage issues are identified and resolved. This case study focuses on a specific instance where a CCTV drain survey was employed to diagnose and rectify a persistent drainage problem in a commercial building in London, UK. cliffabdul2769 0 2 0 May 22, 2026
