Enviro Infra Engineers Limited (EIEL), set up in 2009, is a leading Indian company specializing in the design, construction, operation, and maintenance of water and wastewater treatment plants (WWTPs) and water supply scheme projects (WSSPs) for government authorities. EIEL’s portfolio includes Sewage Treatment Plants (STPs), Common Effluent Treatment Plants (CETPs), sewerage systems, and Water Treatment Plants (WTPs) with associated infrastructure like pumping stations and pipelines. With operations across eight states, EIEL has completed 28 WWTPs and WSSPs, such as 22 projects with capacities of 10 MLD and above. The company employs advanced technologies like Sequential Batch Reactors (SBR), Ultrafiltration (UF), Reverse Osmosis (RO), and Multiple Vapor Recompression (MVR) for Zero Liquid Discharge (ZLD) compliance, focusing on sustainable infrastructure.