CMWSSB plans to construct a 70 km long sewage pipeline under Adyar River Rejuvenation Project in Tamil Nadu June 26, 2024 | Announced/Approved, Key Segments, Municipal Wastewater, Project Updates, Wastewater The Chennai Metropolitan Water Supply and Sewerage Board (CMWSSB) is planning to construct a 70 km long sewage pipeline under the Adyar River Rejuvenation Project in Tamil Nadu. This content is restricted.