BUIDCO invites online re-tenders for the construction and 15-year O&M of a TTRO Plant for the re-use of treated sewage from the 11 MLD Barh STP. Estimated project cost is ₹74.71 Crore with an EMD of ₹84.71 Lakh. Submit bids through website www.eproc2.bihar.gov.in by 28-08-2026 up to 16:00 PM.