The World’s Third-Largest Desalination Company Is Listed in India

125 proprietary technologies, a Rs 166 billion order book, net-cash balance sheet, and structural demand from water scarcity, data centres and semiconductors

There are companies that operate in industries so obviously important that it is surprising more investors are not talking about them. Va Tech Wabag — a century-old water technology company listed on Indian exchanges — is one of them. The world is running short of clean water. Data centres and semiconductor fabs are among the most water-intensive industrial facilities being built today. Discharge norms are tightening globally.

And groundwater depletion is accelerating across geographies. Into this structural tailwind sits a company that is the world’s third-largest desalination supplier, holds 125 proprietary and patented technologies across the full water value chain, and has executed over 1,500 plants across decades.

The Technology Moat

What distinguishes Va Tech Wabag from a conventional engineering and construction company is the depth of its proprietary technology portfolio. With 125+ patented technologies spanning wastewater treatment, desalination, water reuse and Zero Liquid Discharge — covering the full water value chain from intake to discharge — VATW is not a company that bids projects on price alone. “VATW’s edge rests on 125+ proprietary, patented technologies across the full water value chain,” IIFL notes. “This creates a virtual entry barrier where technical-plus-price qualification makes VATW a preferred bidder.”

The T1+L1 qualification framework — where projects require both technical excellence and price competitiveness — effectively narrows the competitive field to a small number of global players with the capability to qualify technically. VATW qualifies in desalination, reuse, industrial wastewater and ZLD — categories that are growing rapidly and command better margins than commodity water treatment. The 1,500+ plants executed over the company’s history provide the reference database that large sovereign and multilateral-funded clients require before awarding contracts of significance.

The Order Book 

The Rs 166 billion order book represents 4.2x book-to-bill — approximately four years of revenue at current execution rates, providing exceptional visibility by any infrastructure standards. Critically, approximately 42% of the order book is from overseas — a geographic diversification that reduces dependence on any single domestic policy or budget cycle.

The order book has compounded at approximately 11% annually over FY11-26, ahead of the 8% revenue CAGR over the same period — a sign that the pipeline is building faster than current execution, which is precisely the right direction for a growing infrastructure business.

The mix within the order book is also improving in ways that matter for profitability. Operations and maintenance contracts — where VATW manages plants it has built, generating recurring, predictable revenue — account for approximately 38% of the book. The industrial segment, which includes data centre water treatment, semiconductor fab water management and ZLD for industrial facilities, has grown to approximately 15% of the book. Both O&M and industrial work carry better margins than the large infrastructure contracts that have historically dominated the portfolio.

The New Growth Layer

This is the part of the Va Tech Wabag story that most investors have not yet connected. Data centres and semiconductor fabrication facilities are among the most water-intensive industrial installations being built anywhere in the world. A large hyperscale data centre can consume millions of litres of water daily for cooling.

A semiconductor fab requires ultra-pure water at volumes and purity levels that only specialist water treatment companies can deliver. “Structural tailwinds of under-built treatment capacity, water scarcity, and AI-/semicon-led demand underpin a long runway,” IIFL states — positioning VATW at the intersection of two of the most powerful global investment themes simultaneously.

India’s data centre boom, Asia’s semiconductor manufacturing expansion and the Gulf’s ongoing desalination and water reuse buildout are all demand sources that will keep VATW’s industrial and overseas order pipeline active for the foreseeable future.

The Business Model 

One of the less-appreciated aspects of the Va Tech Wabag thesis is the structure of the business. Despite executing large and complex infrastructure projects, the company maintains an asset-light model with a net-cash balance sheet — a combination that is genuinely rare in the infrastructure sector. “The asset-light model keeps the balance sheet net-cash, while sovereign-backed and multilateral-funded projects de-risk collection,” IIFL notes. Projects funded by the World Bank, Asian Development Bank, governments and other multilateral institutions carry lower counterparty risk than private sector contracts — and VATW’s positioning as a technically preferred supplier means it wins a disproportionate share of these high-quality contracts.

The WRIDDHI strategy — management’s internal framework for working capital discipline — has kept receivable days and working capital under control, driving cash flows that support the net-cash position without requiring equity dilution. Post the exit from low-return European operations in FY24, capital is being redeployed toward the Middle East, Africa and Southeast Asia — markets with stronger growth, better margins and more sovereign-backed funding.

The Financial Profile

IIFL models approximately 14% revenue CAGR over FY26-29, with EBITDA margins steady at 13-14% as the business mix improves toward higher-margin O&M and industrial work. PAT CAGR of approximately 16% over the same period drives EPS from Rs 58.7 in FY26 to Rs 96.1 by FY29. ROE of 16% and ROCE of 18-19% on a net-cash balance sheet are returns that compare very favourably to peers in the water and infrastructure space. “We model ~14% revenue Cagr over FY26-29 with margins steady at 13-14% on a better mix, driving ~16% PAT Cagr, with 16% RoE and 18-19% RoCE,” the report states.

Scorecard

The Picture

Va Tech Wabag is the kind of stock that long-term investors build meaningful positions in before the broader market discovers the story. It operates in a sector — water treatment and desalination — that is structurally growing faster than almost any other infrastructure category globally. It holds technology leadership that creates durable competitive advantages. Its order book provides four years of revenue visibility. Its balance sheet is net cash.

And it is now positioned at the intersection of water scarcity, data centre demand and semiconductor manufacturing — three themes that will drive industrial water treatment investment for the next decade. IIFL Capital’s initiating coverage note is the first serious external analysis of the stock from a prominent institutional research house — and the 23% upside to target on a net-cash compounder growing earnings at 16% annually is a case that is hard to dismiss. The firm has initiated coverage with a BUY rating and a target price of Rs 2,455.