Enviro Infra Engineers Limited engages in the design, construction, operation, and maintenance of water and wastewater treatment plants (WWTPs) and water supply scheme projects (WSSPs) for government authorities and bodies in India. Its WWTPs includes sewage treatment plants with sewage network schemes and common effluent treatment plants; and WSSPs includes water treatment plants with pumping stations and laying of pipelines for water supply. The company was incorporated in 2009 and is based in Delhi, India.