3 Water Treatment Chemicals and Plants, Desalination and Wastewater Projects and Energy and Environment Solutions Stocks With a Strong Future Roadmap: Ion Exchange (India), VA Tech Wabag and Thermax

Water treatment and energy solution stocks let investors follow companies that clean water and make industry more efficient. Ion Exchange (India), VA Tech Wabag and Thermax cover water treatment chemicals and plants, desalination and wastewater projects and energy and environment solutions.

This list covers three water treatment and energy solution stocks with complete current figures: Ion Exchange (India), VA Tech Wabag and Thermax. Every figure comes from the latest reported financials and the 22 October 2026 market close. Companies without complete current figures were left out.

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What Are Water Treatment and Energy Solution Stocks?

Water treatment and energy solution stocks are listed companies that build treatment plants, supply chemicals and make boilers and pollution control equipment. Their earnings depend on order inflows, execution and recurring operating income.

Water Treatment and Energy Solution Stocks at a Glance

On valuation, all three trade at a P/E above their industry P/E, which reflects the growth the market already expects from them. Readers comparing water treatment and energy solution stocks should look at return on equity and debt together, since a high return earned with low debt is easier to sustain.

Why Do Water Treatment and Energy Solution Stocks Have a Strong Roadmap in India?

Water treatment and energy solution stocks have a strong roadmap in India because tighter water reuse and emission norms push industry and cities to invest in treatment and efficiency.

• Water reuse norms. Rules push plants to recycle and treat water.
• Municipal projects. City water and sewage projects keep coming.
• Operating contracts. Plants run under long contracts add steady income.

Why Ion Exchange (India) Features Among These Water Treatment and Energy Solution Stocks

Among the water treatment and energy solution stocks on this list, Ion Exchange (India) provides water and wastewater treatment solutions, including chemicals, resins, engineering projects and consumer water purifiers, for industries, municipalities and homes.

In the June 2026 quarter, revenue grew 17.6% year on year to Rs 706 crore. Revenue rose from Rs 1,619 crore in FY22 to Rs 3,001 crore in FY26, a compound annual growth rate of 16.7%.

Net profit for FY26 was Rs 143 crore, a net margin of 4.8%. The company has a return on equity of 10.7%, a debt to equity ratio of 0.36 and a market capitalisation of Rs 5,397 crore. The stock trades at a P/E of 55.2, above the industry P/E of 22.7.

Roadmap: The company benefits from tighter water reuse and discharge norms, which lift demand for treatment plants and recycling systems. A mix of projects, chemicals and consumer products spreads its revenue.

What to watch: Track order inflows in water projects, chemicals demand and consumer product growth.

Why VA Tech Wabag Features Among These Water Treatment and Energy Solution Stocks

Among the wastewater and boiler company shares on this list, VA Tech Wabag designs, builds and operates water and wastewater treatment plants, including desalination and recycling plants, for municipal and industrial customers in India and abroad.

The company has a return on equity of 14.4%, a debt to equity ratio of 0.09 and a market capitalisation of Rs 11,717 crore. The stock trades at a P/E of 29.7, above the industry P/E of 22.7.

Revenue rose from Rs 3,012 crore in FY22 to Rs 4,038 crore in FY26, a compound annual growth rate of 7.6%. Net profit grew from Rs 132 crore in FY22 to Rs 370 crore in FY26, which works out to a compound annual growth rate of 29.4%. In the June 2026 quarter, revenue grew 26.0% year on year to Rs 939 crore, while net profit rose 36.9% to Rs 90.1 crore.

Roadmap: Government missions for drinking water supply and sewage treatment, along with industrial water reuse, feed a long project pipeline. Operation and maintenance contracts add recurring revenue, and international orders widen the customer base.

What to watch: Monitor the order book, the share of operation and maintenance contracts and working capital cycles on large projects.

Why Thermax Features Among These Water Treatment and Energy Solution Stocks

Among the three companies on this list, Thermax is a Pune-based engineering company that provides energy and environment solutions, including boilers, heating and cooling systems, water and waste treatment, air pollution control and speciality chemicals.

Revenue rose from Rs 6,255 crore in FY22 to Rs 11,041 crore in FY26, a compound annual growth rate of 15.3%. Net profit grew from Rs 312 crore in FY22 to Rs 720 crore in FY26, which works out to a compound annual growth rate of 23.2%.

In the June 2026 quarter, revenue grew 6.6% year on year to Rs 2,371 crore. The company has a return on equity of 13.0%, a debt to equity ratio of 0.42 and a market capitalisation of Rs 38,542 crore. The stock trades at a P/E of 65.2, above the industry P/E of 43.9.

Roadmap: Industrial demand for cleaner energy, efficient heating and cooling and pollution control creates a broad base of orders. The company is building newer lines in areas such as waste to energy, bio-energy and green solutions.

What to watch: Monitor order inflow across its energy and environment segments.

Ion Exchange (India) vs VA Tech Wabag vs Thermax on Key Financials

The table below sets the three water treatment and energy solution stocks side by side on revenue, profit and margin, using reported figures.

VA Tech Wabag posts the highest return on equity in this group at 14.4%. Thermax has the largest FY26 revenue at Rs 11,041 crore, and Ion Exchange (India) shows the fastest revenue growth with a 16.7% compound annual rate. A useful habit with water treatment and energy solution stocks is to check each new quarterly result against the capacity plans the company described earlier.

The June 2026 quarter, the latest reported, gives a fresh read on momentum:

Key Risks to Check Before Investing in Water Treatment and Energy Solution Stocks

Every theme carries risks that deserve a check before any decision. For these water treatment and energy solution stocks, the main points are: Long-term wastewater and boiler company shares holders usually track revenue growth, margins and cash flow side by side rather than relying on a single ratio.

• Order timing. Large projects can shift between quarters.
• Working capital. Public sector payments can take time.
• Valuation levels. Some of these companies trade at high earnings multiples, so growth must continue to justify them.

Treat this list as a starting point for research and not as a recommendation. Read the latest results presentation, check the management commentary on order books or capacity plans, and compare each company with its peers before you decide anything.

Use the Univest Stock Screener to filter water treatment and energy solution stocks by market capitalisation, P/E, ROE and growth, and build your own shortlist.

Final Thoughts on Water Treatment and Energy Solution Stocks

Water treatment and energy solution stocks reward investors who follow order inflows, execution and recurring income together. Ion Exchange (India), VA Tech Wabag and Thermax each serve a lasting need. Based on the 22 October 2026 close, Ion Exchange (India) trades at Rs 347.8, VA Tech Wabag at Rs 1,784.4 and Thermax at Rs 3,161.3. Valuation matters as much as growth, so compare each company's P/E with its industry P/E before adding any of these water treatment and energy solution stocks to a watchlist.

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What are water treatment and energy solution stocks?

Ans. Water treatment and energy solution stocks are listed companies that build treatment plants, supply chemicals and make boilers and pollution control equipment. Their earnings depend on order inflows, execution and recurring operating income. This list looks at three of them, Ion Exchange (India), VA Tech Wabag and Thermax, using reported FY22 to FY26 financials and the 22 October 2026 closing prices.

Which water treatment and energy solution stocks are covered in this list?

Ans. This list covers Ion Exchange (India), VA Tech Wabag and Thermax. Based on the 22 October 2026 close, Ion Exchange (India) traded at Rs 347.8, VA Tech Wabag at Rs 1,784.4 and Thermax at Rs 3,161.3. Their return on equity ranges from 10.7% to 14.4%, and their revenue compound annual growth from FY22 to FY26 ranges from 7.6% to 16.7%.

Why do water treatment and energy solution stocks have a strong future roadmap in India?

Ans. Water treatment and energy solution stocks have a strong roadmap in India because tighter water reuse and emission norms push industry and cities to invest in treatment and efficiency. The main drivers are as follows. Water reuse norms. Rules push plants to recycle and treat water. Municipal projects. City water and sewage projects keep coming. Operating contracts. Plants run under long contracts add steady income. Together these factors give the companies on this list a visible path for growth over the coming years.

How has Ion Exchange (India) performed financially?

Ans. Revenue rose from Rs 1,619 crore in FY22 to Rs 3,001 crore in FY26, a compound annual growth rate of 16.7%. Net profit for FY26 was Rs 143 crore, a net margin of 4.8%. In the June 2026 quarter, revenue grew 17.6% year on year to Rs 706 crore. The company has a return on equity of 10.7%, a debt to equity ratio of 0.36 and a market capitalisation of Rs 5,397 crore. The stock trades at a P/E of 55.2, above the industry P/E of 22.7. Looking ahead, the company benefits from tighter water reuse and discharge norms, which lift demand for treatment plants and recycling systems. A mix of projects, chemicals and consumer products spreads its revenue.

How has VA Tech Wabag performed financially?

Ans. Revenue rose from Rs 3,012 crore in FY22 to Rs 4,038 crore in FY26, a compound annual growth rate of 7.6%. Net profit grew from Rs 132 crore in FY22 to Rs 370 crore in FY26, which works out to a compound annual growth rate of 29.4%. In the June 2026 quarter, revenue grew 26.0% year on year to Rs 939 crore, while net profit rose 36.9% to Rs 90.1 crore. The company has a return on equity of 14.4%, a debt to equity ratio of 0.09 and a market capitalisation of Rs 11,717 crore. The stock trades at a P/E of 29.7, above the industry P/E of 22.7. Looking ahead, government missions for drinking water supply and sewage treatment, along with industrial water reuse, feed a long project pipeline. Operation and maintenance contracts add recurring revenue, and international orders widen the customer base.

How has Thermax performed financially?

Ans. Revenue rose from Rs 6,255 crore in FY22 to Rs 11,041 crore in FY26, a compound annual growth rate of 15.3%. Net profit grew from Rs 312 crore in FY22 to Rs 720 crore in FY26, which works out to a compound annual growth rate of 23.2%. In the June 2026 quarter, revenue grew 6.6% year on year to Rs 2,371 crore. The company has a return on equity of 13.0%, a debt to equity ratio of 0.42 and a market capitalisation of Rs 38,542 crore. The stock trades at a P/E of 65.2, above the industry P/E of 43.9. Looking ahead, industrial demand for cleaner energy, efficient heating and cooling and pollution control creates a broad base of orders. The company is building newer lines in areas such as waste to energy, bio-energy and green solutions.

What risks should investors check before buying water treatment and energy solution stocks?

Ans. Investors should check a few risks before buying water treatment and energy solution stocks. Order timing. Large projects can shift between quarters. Working capital. Public sector payments can take time. Valuation levels. Some of these companies trade at high earnings multiples, so growth must continue to justify them. Reading the latest results presentation and comparing each company with its peers helps judge how these risks apply to each stock.

Is this list of water treatment and energy solution stocks investment advice?

Ans. No. This article is educational and uses publicly available data as of the 22 October 2026 close. Please verify figures on NSE and BSE, read company filings and consult a SEBI registered adviser before investing. Univest is SEBI registered research analyst INH000013776.