Water that comes into contact with humans, such as for domestic use, industrial usage, or rainwater accumulating in sewers, eventually turns out to be wastewater. It contains a wide spectrum of contaminants that is responsible for causing water pollution affecting both humans and nature. Such water when released directly into the water resources tend to cause severe infections among the individuals and also deplete marine life. Hence, the wastewater has to be treated, purified before releasing out into the environment. Wastewater Treatment includes several meticulously planned steps to eliminate each pollutant from the water. It undergoes three significant levels of treatment namely, primary, secondary, and tertiary treatments. The process generally involves screening, filtration, sedimentation, followed by a chemical process like reverse osmosis and disinfection. Several companies are providing wastewater treatment facilities. We list out the top 10 wastewater companies in India, best in their services of nurturing our mother nature. 1. VA Tech Wabag 98-year-old VA Tech Wabag was founded in its current headquartered site Vienna, Austria, and has its Indian headquarters in Chennai. Being the market leader, the company is spread across four continents providing wastewater solutions. Wabag is known for its wastewater services including sludge treatment, seawater desalination, and industrial water treatment. The company has well-advanced Research and Development centres in India, Austria, and Switzerland. 2. Thermax India Founded in 1980, Thermax India is one of the best wastewater treatment companies in India. It is based in Pune, Maharashtra, and provides a quick fix to both industries and Municipal Corporation for wastewater ailment. Solutions for heating, cooling, water, and waste management, as well as specific chemicals, are among the company's offerings. Massive furnaces for steaming and power generation, complete power plants, industrial and municipal wastewater treatment facilities, waste heat recovery systems, and air pollution control projects are among the services provided by the organisation. 3. GE Water More than a century old, GE Water is the top known wastewater company known for its services. It is a conglomerate based in the US and now serving diverse regions of the globe. GE Water has its Indian headquarter in Bengaluru, Karnataka. As a part of wastewater treatment, the company offers a wide range of solutions like filters, reverse osmosis, and cooling tower treatment. 4. Siemens India- Water Technologies Siemens is known for its industrial excellence, and with its water technologies, they have conquered the thirst of the nation. Based in Germany, the company has established itself in India in 1969 in Mumbai, Maharashtra. The company offers a wide range of services including water treatment plants, wastewater treatment, industrial and municipal wastewater treatment, and drinking water treatment. 5. Aqua Innovative Solutions Aqua Innovation aims to engineer environmental issues by providing solutions to wastewater for the agriculture industry. The company employs the cutting-edge NuWay method, which produces clean water as a consequence of its production process. Apart from preserving the vital source of living- water, the NuWay procedure limits the requirement for the additional agricultural area for manure dispersal. 6. Voltas Limited Voltas Water and treatment is a subdivision of the TATA enterprise, specializing in wastewater and industrial sewage treatment. The company is more than 4 decades old, aims to build a healthier nation. It focuses mainly on the effluent treatment plant, sewage treatment plant, zero liquid discharge plant, and water treatment plant. The company encompasses a wide range of products to fulfil these including Sequence Batch Reactors (SBR), Moving Bed Biofilm Reactor (MBBR) along technologies like ultrafiltration and reverse osmosis. 7. Hindustan Dorr-Oliver Limited Hindustan Dorr-Oliver Limited is a company based in India, providing wastewater treatment services to both private and public sectors. The company provides a wide range of solutions like water recycling and reclamation, wastewater treatment, and sewage treatment plants. 8. UEM India Pvt Ltd Specializing in wastewater treatment, UEM India Pvt Ltd is based in Noida, Uttar Pradesh. The company is a subsidiary of Toshiba water solutions. It provides wastewater treatment solutions with designing, construction, and installation of facilities for domestic water treatment, wastewater treatment. Spread across 30 countries, the company has worked on several projects repairing natural issues. 9. SFC Environmental Technologies Private Limited SFC is a multinational environmental technology company that specializes in municipal sewage and solid waste treatment solutions. The company has about 500 biological nutrient removal plants. It can generate 10,000 MLD of recycled quality water on a daily basis. It is the very first fully automatic in India having SWM 2016 compliant MSW Plant in Goa. SFC offers a wide range of products including disc filters, turbo blowers, and solar drying of sludge. 10. Ion Exchange Ion Exchange is a popular water treatment company earlier based in the UK, now having headquarters in Mumbai Maharashtra. It provides wastewater solutions in a wide range including domestic wastewater, industrial wastewater, institutional wastewater, and commercial wastewater. The company has ultra-modern Research and Development team and is affiliated with leading global water treatment companies. It encompasses numerous facilities including wastewater treatment, water recycle and product regeneration.