Enviro Infra Engineers specializes in the design, construction, operation, and maintenance of Water and Wastewater Treatment Plants (WWTPs) and Water Supply Scheme Projects (WSSPs) for government clients. Their WWTP projects include Sewage Treatment Plants (STPs), sewerage systems, and Common Effluent Treatment Plants (CETPs), while WSSPs encompass water treatment facilities, pumping stations, and pipeline networks. Many of these plants are Zero Liquid Discharge (ZLD) compliant, which ensures the treated water can be reused in applications such as horticulture, cleaning, industrial cooling, and refrigeration.

These WWTP and WSSP projects typically receive partial funding from the Central Government through initiatives like the Atal Mission for Rejuvenation and Urban Transformation (AMRUT) and full funding under the National Mission for Clean Ganga (NMCG) for urban areas. In addition, the Jal Jeevan Mission (JJM) funds rural water supply projects, while state governments or Urban Local Bodies (ULBs) contribute to the funding of both WWTPs and WSSPs through their respective schemes.

As of December 31, 2023, Enviro Infra Engineers has successfully executed 26 WWTP and WSSP projects across India over the past seven years, including 20 projects with a capacity of 10 MLD or more. Their current order book, as of the same date, includes 21 ongoing projects with a combined value of INR 2,341.14 crore.