Synopsis: India’s growing focus on water infrastructure is creating new opportunities for companies like VA Tech Wabag and Ion Exchange. While both operate in the water management space, their business models and growth strategies are quite different. Which company appears better positioned to benefit as the sector continues to expand?
India’s water management sector is slowly becoming a bigger investment theme. The reason is simple. Cities need clean water, industries need reliable water, factories need ultra-pure water, and governments are spending more on sewage treatment, desalination, reuse and wastewater projects. Earlier, water was seen as a basic utility. Now, it is becoming serious infrastructure.
This is where VA Tech Wabag and Ion Exchange come in. Both companies work in water and wastewater treatment, but their business models are not the same. One is more like a pure-play water infrastructure company. The other is a diversified water solutions company with engineering, chemicals and consumer products. So, the real question is not just which company is in the better sector. The real question is which company is better placed to convert India’s water boom into profitable growth.
VA Tech Wabag
VA Tech Wabag is a pure-play water technology company. Its main work is to design, build and operate water and wastewater treatment plants. It works in areas like desalination, sewage treatment, wastewater treatment, water reuse and industrial water treatment.
The company has a long operating history and has delivered more than 1,500 plants over the years. It is also present across several countries and positions itself as a technology-first water solutions provider. Its business model is largely based on EPC and O&M. EPC means it builds projects for customers. O&M means it operates and maintains those projects after they are completed.
This is important because EPC gives large project revenue, while O&M gives steady long-term revenue. Wabag’s order book has a healthy mix of both. In FY26, O&M formed around 38 percent of the order book. This gives the company better visibility because O&M contracts can run for 10 to 20 years.
Financial Performance
Wabag’s FY26 numbers show a company that is growing with discipline. The company reported revenue of Rs. 3,944 crore, with revenue growth of 19.7 percent. Its EBITDA margin stood at 13.3 percent, which was within its guided range of 13-15 percent. PAT stood at Rs. 371 crore, growing around 26 percent year-on-year.
The bigger strength is the balance sheet. Wabag had net cash of around Rs. 950 crore and remained net cash positive for the sixth consecutive year. Its order book stood at more than Rs. 17,235 crore, giving more than 4x revenue visibility. The company also had FY26 order intake of around Rs. 75 billion.
This means Wabag is not just winning orders. It is also protecting margins and cash flows. For an infrastructure company, that matters a lot because many EPC companies grow revenue but lose control over working capital, debt or margins.
Growth Drivers
Wabag’s growth story is linked to three big themes. The first is India’s water infrastructure buildout. The company highlights large government programmes like Jal Jeevan Mission 2.0, AMRUT 2.0 and Namami Gange. These programmes create opportunities in drinking water, sewage treatment and reuse.
The second theme is global water spending. Wabag has a strong presence in the Middle East and Africa. The company sees opportunities in Saudi Arabia, Kuwait, Africa and other regions where water scarcity is a major issue. Desalination and water reuse are especially important in these markets.
The third theme is new economy water demand. Semiconductors, solar manufacturing, green hydrogen, data centres and AI need large quantities of clean or ultra-pure water. Wabag has already won orders in solar manufacturing and compressed biogas. It is also building its Future Energy Solutions business around ultra-pure water, Bio-CNG, green hydrogen and digital water.
What Is Working And What Can Go Wrong?
What is working for Wabag is its clean positioning. It is not trying to be everything. It is focused on water infrastructure. It has a strong order book, good margins, net cash, international exposure and a growing O&M base.
The risk is that this is still a project business. Large projects can face delays in approvals, funding, execution or customer payments. Government spending can also move slowly. International projects bring currency and geopolitical risk. Competition can increase as the water opportunity becomes bigger.
However, Wabag’s current numbers suggest that it has managed these risks better so far. The company says it follows selective bidding and focuses on margin-accretive projects. That is the key point. In infrastructure, growth without discipline can become dangerous. Wabag currently looks disciplined.
Ion Exchange
Ion Exchange is different from Wabag. It is not only a project company. It has three main business segments: Engineering, Chemicals and Consumer Products.
The Engineering business provides water and wastewater treatment solutions, including desalination, recycle, zero liquid discharge and industrial water treatment. This is the business that directly overlaps with Wabag.
The Chemicals business is a major differentiator. Ion Exchange manufactures resins, membranes, speciality chemicals and chemical treatment programmes. These are used in water treatment and also in non-water applications. This makes Ion Exchange more product-driven than Wabag. The Consumer Products business caters to homes, hotels, hospitals, institutions, defence establishments and other users through water and environment products.
In FY26, Engineering contributed 58 percent of consolidated revenue, Chemicals contributed 29 percent and Consumer Products contributed 13 percent. So, Ion Exchange is a diversified water company, while Wabag is a more focused water infrastructure company.
Financial Performance
Ion Exchange reported FY26 operating income of Rs. 2,914.8 crore. Operating EBITDA stood at Rs. 210.2 crore and PAT stood at Rs. 143.2 crore. The issue is not revenue. The issue is profitability.
In FY26, the company’s EBITDA margin was much weaker than Wabag’s. Q4 was especially weak, with operating EBITDA margin at only 2.31 percent. The full-year margin was also under pressure compared with the previous year.
The problem came from multiple places. Engineering margins were hit by legacy project issues and deferred exports to GCC markets due to the West Asia crisis. The company said around Rs. 60 crore of export shipments were deferred. Chemicals margins were hit by input cost pressure, Roha facility costs and West Asia logistics issues. Consumer Products continued to grow in volumes, but the company is still investing to build a larger revenue base. So, compared with Wabag, Ion Exchange’s FY26 performance looks more uneven.
Growth Drivers
Ion Exchange still has strong long-term drivers. Its Engineering business is benefiting from demand in water treatment, wastewater, desalination, zero liquid discharge and industrial projects. The company also said its order intake was healthy and around 40 percent higher than the previous full financial year.
The Chemicals business can be a major long-term advantage. The company has commissioned its Roha manufacturing lines and received Water Quality Association certification for resins manufactured at Roha. This can help improve access to international markets. The Roha plant is important because it increases manufacturing capacity and can support growth in resins and specialty chemicals.
Ion Exchange has also entered into a collaboration with MANN+HUMMEL to manufacture hollow-fibre ultrafiltration membranes and get technology transfer for membrane bioreactor solutions in India. This can reduce import dependence and improve competitiveness in water treatment projects.
The company is also active in ultra-pure and high-purity water projects, including solar and pharmaceutical segments. These areas can become more important as India builds more solar, electronics, semiconductor and advanced manufacturing capacity.
What Is Working And What Can Go Wrong?
What is working for Ion Exchange is diversification. Unlike Wabag, it is not dependent only on large EPC and O&M projects. It has engineering, chemicals and consumer products. This gives it more ways to benefit from the water theme.
Its chemicals business is especially important because products like resins and speciality chemicals can offer a different profit pool compared with project execution. If Roha ramps up well and global demand improves, the chemicals business can become a stronger growth engine.
But the problem is execution. FY26 showed that the business is carrying pressure from legacy projects, Roha costs, input cost inflation and export disruptions. Management expects some of the deferred revenue to come back, and it also expects legacy project issues to reduce over time. But until margins recover, investors may not give the company full credit for its growth potential.
Ion Exchange looks like a company with several future opportunities, but its current performance is not as clean as Wabag’s.
Comparison
Both companies are beneficiaries of the water management boom, but they benefit in different ways.
Wabag is a direct play on large water infrastructure. If India and global markets spend more on desalination, sewage treatment, water reuse and municipal water projects, Wabag can benefit through EPC and O&M contracts. Its order book is large, margins are stable and the balance sheet is strong.
Ion Exchange is a broader water solutions play. It can benefit not only from large projects but also from chemicals, resins, membranes, consumer products and industrial water systems. This makes the opportunity wider, but also more complicated.
On numbers, Wabag looks stronger today. It has higher revenue, better EBITDA margin, higher PAT, larger order book and a net cash balance sheet. Ion Exchange has a diversified model, but FY26 margins were weak and the company needs to show repair in Engineering and Chemicals.
On future optionality, Ion Exchange should not be ignored. Roha, membranes, resins, high-purity water and international product sales can become powerful growth drivers. But these are still in the improvement phase. Wabag’s opportunity looks more visible because its order book already gives strong revenue visibility.
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