About 85 per cent of the construction work under the Surya Regional Bulk Water Supply Scheme (WSS) for the Western Sub Region of the Mumbai Metropolitan Region (MMR) has been completed. The trial run for a 24×7 water supply is scheduled for June 2024. After which, the regular water supply will start in a phased manner. Mumbai Metropolitan Region Development Authority is implementing a regional water supply scheme with the Surya river as the source for 403 mld bulk water supply for meeting the water requirement of 185 mld at Vasai-Virar City Municipal Corporation area and 218 mld at Mira Bhayandar Municipal Corporation area including rental housing complexes and 27 villages located in the Western Sub Region of MMR. It is being developed by Larsen & Toubro Limited at an estimated cost of Rs 13.26 billion.