Sewerage work commences in Karwan, Hyderabad December 20, 2022 | Key Segments, Municipal Wastewater, Municipal Water Supply, Wastewater, Water Supply Greater Hyderabad Municipal Corporation (GHMC) and Hyderabad Metropolitan Water Supply and Sewage Board (HMWSSB) has commenced work on Strengthening and Remodelling of Karwan Sewage System. This content is restricted.