Water is our greatest resource; however, the decline in water quality has become a global problem.
Water treatment companies focus on removing contaminants before returning water to the environment, while they also develop and provide innovative solutions like filtration systems, pumps, and disinfection technologies to improve water quality at the source.
The water treatment industry plays a vital role in safeguarding public health and maintaining environmental balance by ensuring access to clean, safe water.
This diverse sector includes companies that specialize in both wastewater treatment and water purification for residential, industrial, and municipal use.
With rising concerns about water scarcity, pollution, and aging infrastructure, the industry is rapidly evolving toward more sustainable and efficient practices.
Companies are investing heavily in research and development to create advanced technologies that conserve resources, reduce environmental impact, and meet the growing demand for clean water.
As the need for reliable water treatment solutions continues to rise, it is essential to recognize the leaders driving innovation and sustainability in this critical industry.
In this 2025 updated list, we highlight the top 12 water treatment companies in the United States that are setting the standard in water purification, environmental stewardship, and technological advancement.
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Why is water treatment necessary?
The world is grappling with an unprecedented water crisis marked by prolonged droughts, declining rainfall, dropping groundwater levels, and shrinking dam reserves.
These conditions have created a seemingly endless challenge: how to meet the rapidly growing demand for fresh water in the face of diminishing natural resources.
As populations grow and activities such as industrialization, urbanization, agriculture, manufacturing, and construction continue to expand, the need for clean water becomes more urgent than ever.
These sectors consume vast quantities of water daily, placing immense pressure on already-stressed water sources.
In such critical conditions, water treatment and reuse have emerged as the most viable and sustainable solutions.
By treating contaminated or unusable water and repurposing it for industrial, agricultural, or even domestic applications, we can significantly reduce our dependence on limited freshwater supplies.
There are several types of water treatment methods used at the industrial level:
- Wastewater Treatment—Removes contaminants from used water to make it safe for discharge or reuse.
- Saline Water Treatment—Desalinates seawater or brackish water to make it suitable for consumption or use.
- Sewage Treatment—Treats household and municipal sewage to reduce pollutants and pathogens.
- Demineralization Treatment—Removes mineral salts from water for high-purity applications in industries.
- Reverse Osmosis (RO) Treatment—Uses semi-permeable membranes to remove ions, molecules, and particles from water.
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Top 12 Water Treatment Companies in the US
1. Veolia Water Technologies
- Headquarter: Saint-Maurice, Île-De-France, France
- Founded: 1853
- Headcount: 10001+
Veolia Water Technologies is a global leader in water treatment solutions, offering a wide range of services and products for various industries.
The company specializes in wastewater treatment, providing advanced technologies for the treatment and recycling of industrial and municipal wastewater.
Veolia also plays a key role in hydrogen production, offering sustainable solutions that support the transition to cleaner energy sources.
In addition, mobile water services are part of Veolia’s portfolio, enabling the provision of temporary water treatment solutions for emergency or remote needs.
The company’s expertise extends to water treatment chemicals, offering innovative products to enhance water purification processes across multiple sectors.
With a commitment to sustainability, Veolia Water Technologies helps businesses and municipalities optimize their water usage, reduce environmental impact, and ensure compliance with stringent regulations.
Their solutions are widely trusted across industries such as energy, chemicals, food and beverage, and municipal infrastructure.
2. Pentair
- Headquarter: London, United Kingdom
- Founded: 1966
- Headcount: 10001+
Pentair is a global leader in providing a diverse range of products and solutions related to water supply, disposal, and treatment.
The company specializes in pool and spa equipment, water filtration systems, and pumps for various applications, catering to both residential and commercial needs.
Pentair is also known for its energy-efficient solutions, offering products designed to reduce energy consumption and enhance sustainability.
A notable aspect of Pentair’s commitment to sustainability is its partnership with ENERGY STAR since 2013, highlighting the company’s dedication to developing energy-efficient products that meet stringent environmental standards.
The company’s water solutions are widely used in residential, industrial, and commercial sectors, including applications in food and beverage, healthcare, and agriculture.
With a strong focus on innovation and environmental responsibility, Pentair helps customers conserve water, reduce energy costs, and improve operational efficiency.
3. Evoqua Water Technologies
- Headquarter: Pittsburgh, Pennsylvania, United States
- Headcount: 1001-5000
- Latest funding type: Post Ipo Secondary
Evoqua Water Technologies LLC is a prominent provider of water and wastewater treatment solutions.
The company offers a comprehensive range of products and services, including filtration systems, disinfection systems, and high-efficiency sand filters, designed to meet the water treatment needs of industries across the globe. Evoqua focuses on ensuring clean, safe water for industrial, municipal, and commercial customers.
With a strong emphasis on sustainability and innovation, Evoqua develops cutting-edge solutions that help businesses reduce their environmental impact while optimizing their water management practices.
The company’s technologies are used in sectors such as pharmaceuticals, food and beverage, energy, and municipal water systems, among others.
Evoqua’s expertise extends to addressing complex water challenges, including wastewater treatment, water reuse, and desalination. By combining advanced technologies with a commitment to environmental responsibility, Evoqua continues to be a leader in the water treatment industry.
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4. Xylem
- Headquarter: Rye Brook, New York, United States
- Headcount: 10001+
- Latest funding type: Seed
Xylem Inc. is a global leader in water technology, focusing on providing innovative solutions for water and wastewater transportation, treatment, and testing.
The company offers a broad range of products and services designed to help manage, conserve, and optimize water resources in industries including municipal, industrial, and commercial sectors.
Xylem’s offerings include pumps, filtration systems, treatment technologies, and smart water management solutions that enhance water efficiency and reduce environmental impact.
The company is committed to advancing sustainable water solutions, addressing critical challenges such as water scarcity, climate change, and pollution.
Their technologies are used for drinking water, wastewater treatment, irrigation, and stormwater management, making Xylem a trusted partner for both public and private sector water management needs.
Through continuous innovation and a focus on environmental responsibility, Xylem plays a key role in shaping the future of water technology.
5. BRITA Group
- Headquarter: Taunusstein, Germany
- Founded: 1966
- Headcount: 1001-5000
BRITA is a leading company specializing in providing water filtration solutions for both residential and commercial use.
With over 50 years of experience, BRITA is renowned for its wide range of products, including water dispensers, filter cartridges, and accessories designed to improve the quality of drinking water.
The company’s filtration technologies are focused on enhancing the taste, purity, and safety of water, removing impurities like chlorine, lime scale, and heavy metals.
BRITA’s products cater to a variety of needs, from home water pitchers and tap filters to larger systems for businesses and commercial spaces.
BRITA is committed to providing sustainable solutions for water filtration and is dedicated to reducing plastic waste through reusable products.
Their focus on improving water quality and sustainability has made them a trusted brand for customers seeking cleaner and healthier water.
6. GE Water & Process Technologies
- Headquarter: Trevose, Pennsylvania, United States
- Headcount: 5001-10000
GE Water, now a part of SUEZ Water Technologies & Solutions, specializes in providing comprehensive water treatment and management solutions.
The company offers a wide range of innovative technologies, products, and services designed for industrial, municipal, and commercial customers.
Their solutions focus on water purification, wastewater treatment, and resource recovery, ensuring that businesses and communities can efficiently manage their water resources.
GE Water’s portfolio includes membrane filtration systems, reverse osmosis technologies, water treatment chemicals, and smart monitoring systems that improve operational efficiency and sustainability.
These solutions help industries such as power generation, food and beverage, oil and gas, and municipal utilities optimize water use, minimize environmental impact, and comply with regulatory standards.
With a strong focus on innovation and sustainability, GE Water continues to lead in providing solutions that address the global challenge of water scarcity and quality issues.
7. SUEZ – Oil & Gas Systems
- Headquarter: Rowville (Melbourne), Vic, Australia
- Founded: 1898
- Headcount: 10001+
Suez Water Technologies & Solutions is a leader in providing advanced water and wastewater treatment solutions.
The company offers a diverse portfolio of innovative technologies and services that help industries, municipalities, and commercial customers efficiently manage water resources and comply with environmental regulations.
Their solutions include water purification, wastewater treatment, resource recovery, and smart water management technologies. By integrating cutting-edge systems, Suez enhances operational efficiency while minimizing environmental impact.
Their expertise spans multiple industries, such as power generation, food and beverage, chemical processing, and municipal utilities.
With a focus on sustainability and efficiency, Suez Water Technologies & Solutions helps clients reduce water consumption, improve water quality, and drive sustainable water management practices.
This makes them a trusted partner for organizations looking to address the global challenge of water scarcity and environmental sustainability.
8. Kent RO Systems Ltd.
- Headquarter: Noida, India
- Founded: 1999
- Headcount: 1001-5000
KENT RO Systems Ltd is a leading company in the healthcare products sector, dedicated to providing clean and safe drinking water through innovative Reverse Osmosis (RO) technology.
Since its inception in 1999, KENT has been at the forefront of pioneering RO technology in the Indian market.
With a vision to make the world a healthier and happier place, KENT offers a range of water purifiers, air purifiers, and other healthcare solutions.
Their advanced filtration technologies ensure that customers receive purified water, free from contaminants and harmful substances.
KENT’s products are trusted by millions of consumers in India and beyond, as they continue to lead the way in water purification, offering reliable solutions that promote a healthy lifestyle.
The company’s dedication to innovation, quality, and sustainability has made it a preferred choice for clean water solutions in households and businesses alike.
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9. Haycarb PLC
- Headquarter: Sri Lanka
- Founded: 1973
- Headcount: 1001-5000
Haycarb is a leading manufacturer and marketer of coconut shell activated carbon, holding a global market share of over 16%.
The company offers a comprehensive range of granular and powdered activated carbon that serves various industries, including water treatment, air treatment, gold recovery, food and beverage, energy storage, and specialty applications.
In addition to its high-quality activated carbon products, Haycarb provides total solutions to customers. These solutions include testing, product development, regeneration of spent activated carbon, and designing environmental engineering systems.
Their expertise in these areas ensures customers receive tailored solutions to meet specific requirements for improved operational efficiency and environmental sustainability.
With a strong reputation for innovation and customer service, Haycarb continues to be a trusted name in the activated carbon industry, committed to sustainability and quality across its product offerings.
10. Rowater.ro
- Headquarter: Romania
- Headcount: 5001-10000
Rowater.ro is a company specializing in water treatment and purification solutions, catering to both residential and commercial customers.
With a strong focus on providing high-quality and efficient water filtration systems, Rowater.ro offers a wide range of products designed to ensure clean, safe, and purified water.
Their offerings include reverse osmosis systems, water softeners, UV purifiers, and filtration cartridges tailored to meet the specific needs of various customers.
The company also provides installation, maintenance, and support services to ensure optimal performance of their water treatment solutions. Rowater.ro is committed to delivering innovative, eco-friendly, and reliable solutions that improve water quality and contribute to a healthier environment.
Their expertise in the field allows them to design custom solutions for clients across different sectors, ensuring clean water access for households, businesses, and industries.
Through its dedication to customer satisfaction and sustainable practices, Rowater.ro continues to be a trusted leader in the water purification industry.
11. RangeWater Real Estate
- Headquarter: Atlanta, United States
- Founded: 2006
- Headcount: 1001-5000
Liverange Water is a company specializing in innovative water purification and treatment solutions. Their extensive product range includes advanced filtration systems, water conditioning solutions, and other water treatment technologies designed to ensure clean and safe water for various applications.
These solutions are ideal for residential, commercial, and industrial use, addressing a wide range of water quality concerns.
Liverange Water focuses on providing efficient, eco-friendly products that meet the evolving needs of customers.
Their offerings are designed to improve the taste, quality, and safety of drinking water while also contributing to sustainable water usage.
The company is committed to continuous innovation, ensuring that their products meet high standards of performance and reliability.
With a strong customer-centric approach, Liverange Water aims to enhance water quality and contribute to healthier communities through its cutting-edge solutions.
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12. Veolia Water Technologies Italy
- Headquarter: Milán, Lombardía, Italy
- Founded: 1853
- Headcount: 10001+
Veolia Water Technologies is a global leader in providing comprehensive water and wastewater treatment solutions.
With a focus on sustainability and efficiency, Veolia offers a broad spectrum of technologies, services, and expertise designed to help businesses and industries effectively manage their water resources.
Their solutions cater to diverse sectors, including municipalities, industrial operations, and commercial enterprises.
Veolia’s innovations span water purification, wastewater treatment, desalination, and water recycling systems, aiming to improve water quality and reduce environmental impact.
The company’s advanced solutions help clients optimize water use, reduce waste, and meet regulatory requirements, ensuring safe and sustainable water management.
With over a century of expertise, Veolia continues to lead in developing cutting-edge technologies that address the world’s growing water challenges.
Their commitment to delivering efficient, sustainable water solutions makes them a trusted partner for clients worldwide.
FAQs
What do water treatment companies do?
Water treatment companies are responsible for purifying and treating water to make it suitable for specific uses, including drinking, industrial processes, and irrigation. They design and implement systems that remove contaminants, filter out harmful substances, and ensure that treated water meets safety and environmental standards.
Why is the role of water treatment companies important?
These companies are essential in combating global water challenges such as scarcity, pollution, and declining water quality. By treating wastewater and enabling water reuse, they help preserve natural water sources, protect public health, and support sustainable development across communities and industries.
What industries rely most on water treatment companies?
Many industries rely on clean water for daily operations. Key sectors include agriculture, manufacturing, pharmaceuticals, oil and gas, food and beverage production, and power generation. These industries require tailored water treatment solutions to ensure the quality and safety of water used in their processes.
What types of water treatment technologies do companies offer?
Water treatment companies offer a wide range of technologies, including reverse osmosis, ultraviolet (UV) disinfection, chemical treatment, filtration systems, and biological treatment processes. The choice of technology depends on the source of the water and the specific requirements for its intended use.
How do I choose the right water treatment company?
Choosing the right company depends on your specific water needs, whether you’re looking for residential, commercial, or industrial solutions. It’s important to evaluate a company’s expertise, customer service, and ability to provide customized solutions that align with your goals. Factors such as regulatory compliance, reputation, and long-term service support should also be considered.
Conclusion
As demand for clean water rises, water treatment companies ensure safe, reusable water for various sectors. Choosing the right provider is essential for effective water management and long-term environmental responsibility.
References
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