India's water infrastructure sector is poised for a substantial investment surge through FY31, fueled by escalating water scarcity, rapid urbanization, and stricter environmental regulations. A report from SMIFS highlights a sustained investment cycle, anticipating significant capital expenditure in water treatment, wastewater management, and supply projects.
India Faces Growing Water Stress and Capacity Gaps
Despite holding 18 percent of the world's population, India possesses only about 4 percent of its freshwater resources. Per-capita water availability, recorded at 1,486 cubic meters in 2021, falls below the 1,700 cubic meter water-stress threshold and is projected to decline further to approximately 1,140 cubic meters by 2050. This scarcity is compounded by inadequate sewage treatment, with roughly 60 percent of generated sewage remaining untreated.
Government initiatives like the Jal Jeevan Mission 2.0 (JJM 2.0), Atal Mission for Rejuvenation and Urban Transformation 2.0 (AMRUT 2.0), and Namami Gange are critical drivers for sector growth. However, project execution has often lagged approvals, with only a small fraction of sanctioned projects completed under AMRUT 2.0.
Massive Investment Projected for Water Infrastructure
SMIFS estimates that construction spending on water treatment, wastewater treatment, and water supply will reach Rs 7.4-7.8 lakh crore between FY27 and FY31. This represents a 1.6-fold increase compared to the Rs 4.74 lakh crore invested during FY22-26. Wastewater treatment, reuse, and industrial water demand are expected to be the largest incremental growth areas.
The Indian water and wastewater treatment technology market is projected to grow from $2.98 billion in 2025 to $5.17 billion by 2031, demonstrating a compound annual growth rate (CAGR) of approximately 9.6 percent.
Shifting Contract Models and Emerging Technologies
The sector is witnessing a shift in contract models from traditional Engineering, Procurement, and Construction (EPC) to Design, Build, Operate (DBO) and Hybrid Annuity Model (HAM). These new models offer longer operational periods, maintenance income, and annuity streams, though they require stronger balance sheets from participating companies.
Tertiary treatment, Membrane Bioreactor (MBR), and Sequential Batch Reactor (SBR) technologies are gaining prominence. Significant demand is also expected from industrial sectors such as data centers, semiconductor fabrication plants, green hydrogen projects, battery gigafactories, pharmaceuticals, chemicals, and textiles, all requiring advanced water and wastewater solutions.
Analysts Recommend Three Water Infrastructure Stocks
The SMIFS report assigned 'Buy' ratings to three key players in the water infrastructure sector, citing their potential for significant upside:
- VA Tech Wabag Ltd: With a target price of Rs 2,760, implying a potential upside of 38 percent.
- Enviro Infra Engineers Ltd: Assigned a target price of Rs 360, suggesting a substantial 110 percent upside potential.
- EMS Ltd: Given a target price of Rs 503, indicating a potential upside of 63 percent.
While the outlook for the sector remains positive, SMIFS highlighted the main risk as delays between announced outlays, fund releases, and actual project execution. For instance, the Jal Jeevan Mission's fund drawdown reportedly decreased from Rs 69,890 crore in FY24 to Rs 22,540 crore in FY26.