The construction work of the Tungareshwar tunnel in Vasai under the Surya Regional Bulk Water Supply Scheme (WSS) for the western subregion of Mumbai Metropolitan Region has been completed. The Mumbai Metropolitan Region Development Authority is implementing the 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 and 218 mld at Mira Bhayandar Municipal Corporation. It is being developed by Larsen & Toubro Limited at an estimated cost of Rs 13.26 billion.