If you live in India, there is probably a water supply in your home, right? And what do you think that water actually comes from? Sure, it is supplied by the local municipal corporation, but like, that water came from somewhere, and then the municipal corporation supplied it to you, right? They surely treat the water before they supply it to the general public, you know, to make it safe to drink and use. That is precisely where the use of water treatment systems comes into play, and these are the background efforts that we never think of. But there are many water treatment companies who provide these solutions, and today, we’ll be talking about the top 10 leading water treatment companies in India as of 2025. So, let’s just get to that.
1. Thermax India
Thermax is one of the trusted water treatment companies in India. And you’d be kinda shocked to know that on this list, Thermax is just one company that has a plant that is only run by solar power, and that is down there in Pune, Maharashtra. Are you aware of that yet? Like, they are committed to products that are sustainable They focus on creating solutions for water treatment like zero-liquid discharge systems and reverse osmosis. Right here in India, you see, industries including power, chemicals, and manufacturing use them to clean and reuse water, just so you know. Thermax not only cleans water but also helps save and optimize the utilization of water by the firms.
2. VA Tech Wabag
VA Tech Wabag isn’t just a good water treatment company that is super famous in India, that’s the same case with it on the global stage too. But looking at that, you must be wondering what is that precisely. Well, that may be because they have done more than 6,000 water treatment projects around the world! How about that now? They are specialists in sewage treatment, water recycling, as well as desalination, which refers to the conversion of seawater to fresh water. And just so you know, they are working on future-oriented projects like the creation of clean water to green hydrogen by 2025. Right here in the country, sure, people trust VA Tech Wabag for big municipal water systems or industrial water and waste management needs.
3. Ion Exchange India
You see, just to put it simply, for a long time now, Ion Exchange India has been among the pioneers in water treatment. They know what they are doing with 100,000 installs! Like, they recently teamed up with TERI to invent a new wastewater treatment tech. Just so you know though, they are also carrying out significant work in Saudi Arabia. From recycling water to treating industrial waste, Ion Exchange is that ONE company that is always ahead to innovate something useful or more effective than already existing solutions.
4. Netsol Water
Sure enough, Netsol Water is a rising star in water treatment sectors across India, but why exactly? Well, they are reputed experts in wastewater treatment and offer cost-efficient solutions. Industries use their sewage treatment plants (STPs) and effluent treatment plants (ETPs) for recycling water to conserve resources. Netsol is different because they prioritize making their systems affordable and environmentally friendly.
5. Siemens India (Water Technologies Division)
Alright, next on the list, perhaps you know Siemens as a company that makes engineering wonders, but they also manufacture water treatment products. Since 1969, Siemens India’s water technologies division has been offering reverse osmosis, ultrafiltration, and wastewater management solutions. You know, they are known to make systems that work well for cities and industries. Due to their recycling of water and using it efficiently, Siemens is one name one can bank on.
6. Voltas Limited
Sure enough, besides other Tata Group firms, it is also a subsidiary of Tata Group. Just so you’re wondering, know that they design and build advanced technology of moving bed biofilm reactors (MBBR) and sequence batch reactors (SBR) which are good methods for treating wastewater. Voltas meets the water treatment requirements of industries such as textiles, sugar, and food processing.
7. Hindustan Dorr-Oliver Limited
Next on the list, you see, Hindustan Dorr-Oliver Limited is a common name when it comes to big government water treatment projects. They are professionals in recycled water and sewage treatment. Over the years, they have managed very difficult projects for public and private-sector clients. Diversey India has advanced technology to solve tough water-related problems, which makes it a leading water treatment company in India, and no two ways about that.
8. UEM India Pvt Ltd
Then there is UEM India, you know, a Toshiba Water Solutions company, that designs and builds water treatment systems for all types of needs meeting the requirement of the manufacturing segment as well as construction, a process that is cost-effective and eco-friendly. They are versatile and skilled in developing projects in more than 30 countries worldwide. Sure, as of 2025, they are unique as they create water solutions for different needs.
9. SFC Environmental Technologies
SFC Environmental Technologies is for improving efficiency and making water treatment sustainable. They are famous for biological nutrient removal, disc filters, and turbo blowers which help in the effective treatment of wastewater. Just so you know though, they have also worked on advanced wastewater treatment plants in India, not only the basic ones, so sure, SFC is a great company to keep a lookout for when it comes to these industries.
10. Wog Technologies
Wog Technologies is a company that operates in the field of water treatment together with renewable energy. They will implement both advanced systems like anaerobic reactors and also units like membrane bioreactor (MBR) for effective water treatment. Sure enough, Wog is a unique company dedicated to providing environmentally friendly and dependable drinking water treatment systems right here in India. So no wonder why this has helped the company build a solid reputation in industrial as well as municipal works.
Conclusion
That’s all. Sure, there are many more water treatment companies right here in India, but if we’re talking about the top, best, and most popular ones, well, these are the ten right in front of you. You may be looking forward to investing in some of these companies, or it could be that you wanted to know about all this just for general purposes. Whatever it is, we hope that our today’s post helped you out in some way.
