How can the world ensure access to clean and safe water in an age of rapid industrialization and climate change? Which companies are leading the way in developing the technologies that make this possible — from advanced filtration and desalination to digital water management? And what innovations are shaping the future of global water treatment in 2025 and beyond? These are the questions that concern industries, municipalities, and environmental professionals alike.
In 2025, the water treatment equipment market is witnessing a new wave of growth driven by sustainability goals, stricter environmental regulations, and cutting-edge innovations in membrane technology, smart monitoring, and energy efficiency. Global leaders such as SUEZ, Xylem, Pentair, and others continue to dominate the industry, providing reliable solutions that help address water scarcity, pollution, and resource recovery challenges worldwide.
This article presents an in-depth look at the Top 10 Water Treatment Equipment Manufacturers in the World 2025—highlighting their expertise, product innovations, and contributions to sustainable water management. Continue reading to discover which companies are setting the global benchmark for water treatment excellence and what makes them stand out in a rapidly evolving industry.
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Founded on a legacy of innovation and sustainability, SUEZ is a global leader in water and waste management solutions. With over a century of experience, the company has been instrumental in helping industries, municipalities, and communities manage vital resources responsibly. SUEZ is recognized for its commitment to circular economy principles, environmental protection, and technological advancement, continuously developing smarter solutions to address global water challenges such as scarcity, quality, and reuse.
In the field of water treatment equipment, SUEZ offers cutting-edge systems designed to optimize water purification, desalination, and wastewater recovery. Its portfolio includes advanced membrane filtration technologies, ultrafiltration modules, reverse osmosis systems, and digital water management platforms. These innovations serve key sectors including municipal utilities, power generation, food & beverage, and pharmaceuticals. By integrating data-driven analytics with sustainable engineering, SUEZ ensures high-performance, energy-efficient, and reliable water treatment solutions worldwide.
Establishment: 1858
Headquarters: Paris, France
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Founded as a focused water-technology company in 2011, Xylem Inc. has grown into one of the world’s leading providers of water infrastructure and applied water solutions. Born from the water-related businesses spun off from ITT Corporation, Xylem combines a century-plus heritage of pump and instrumentation brands with a modern mission to solve global water challenges — from safe drinking water and resilient utilities to industrial process water and smart metering. The company serves customers in more than 150 countries and emphasizes sustainability, innovation, and digitalisation across its global operations.
In the realm of water treatment equipment, Xylem’s offering spans pumps and pumping systems, smart filtration and clarification solutions, biological and physical wastewater treatment systems, dewatering equipment, and advanced monitoring & analytics platforms. Xylem’s portfolio brings together well-known brands (for example Flygt, Goulds, Sanitaire, YSI and others) and platform technologies such as Xylem Vue to deliver integrated solutions for municipal utilities, industrial customers, and legacy system upgrades. Strategic acquisitions — most notably the addition of Evoqua’s treatment technologies — have further strengthened Xylem’s capabilities in chemical-free disinfection, membrane and specialty treatment systems, and full-service project delivery.
Establishment: 2011
Headquarters: Washington, D.C., United States
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Founded in 1966, Pentair plc has evolved from a small industrial start-up into a diversified global water-technology company focused on moving, improving and enjoying water. The company combines decades of product engineering with a strategy that spans residential, commercial and industrial markets. Pentair is incorporated in Ireland as a public limited company and operates across more than 150 countries, with major commercial centres in the United Kingdom and the United States — a structure that supports global supply, R&D and service delivery.
In the field of water treatment equipment, Pentair offers a broad portfolio that covers filtration systems, pumps and fluid handling, water softening and conditioning, packaged treatment units and specialist components for municipal and industrial applications. Pentair’s product range includes media and cartridge filters, membrane and reverse-osmosis components, chemical dosing and control equipment, submersible and booster pumps, as well as digital monitoring and control accessories — serving water treatment, commercial buildings, food & beverage, and pool & spa markets. Pentair also integrates service, aftermarket parts and modular systems to help customers reduce total cost of ownership and improve water quality and efficiency.
Establishment: 1966
Headquarters: London, United Kingdom
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Evoqua Water Technologies grew quickly into a leading specialist in mission-critical water and wastewater treatment solutions after its corporate formation in the 2010s. The company built a reputation for providing engineered systems, aftermarket service and rental solutions to utilities and industrial customers worldwide — with strong footholds in power generation, semiconductor, food & beverage, and municipal markets. Although Evoqua’s roots trace to multiple long-standing legacy businesses, the modern Evoqua brand was established through a series of targeted acquisitions and an initial public profile in the 2010s, and it is known for customer-focused project delivery, service reliability and a broad installed base of treatment assets.
In 2023 Evoqua was acquired by Xylem, and many Evoqua technologies and service offerings now sit within Xylem’s broader water-technology platform while continuing to be marketed under trusted Evoqua brand names in certain markets. This combination expanded Xylem’s treatment, disinfection and specialty technologies and reinforced Evoqua’s position in membrane systems, specialty disinfection and industrial water services.
In the field of water treatment equipment, Evoqua’s portfolio historically (and in its ongoing integration with Xylem) has included: ion-exchange and continuous electrodeionization modules (Ionpure®), membrane-based systems and reverse osmosis skid packages, ultrafiltration and multimedia filtration (Vortisand®), UV disinfection and advanced oxidation systems (ATG® and related brands), chemical feed and dosing systems, sludge dewatering and solids handling equipment, and turnkey packaged treatment plants. Evoqua has also been widely recognized for aftermarket services, rentals, spare parts and lifecycle support that help customers keep critical systems online and compliant.
Establishment: 2010s
Headquarters: Pittsburgh, Pennsylvania, United States.
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BWT (Best Water Technology) is an Austria-based water-technology group with deep historical roots and a modern, innovation-led strategy. The organisation traces its origins to 1823 and—after a management buy-out that created the current group structure in 1990—has grown into a pan-European and global provider of water-quality solutions. BWT positions itself around the mission “Water is our Mission,” emphasising sustainability, hygiene, and product innovation across household, commercial, industrial and pharmaceutical markets.
In its water treatment equipment business, BWT develops and manufactures a broad array of technologies: membrane products and membranes for filtration and emerging energy applications, domestic and commercial water filters, water softening and limescale-protection systems, dosing and metering equipment, packaged ultrapure and process-water systems for pharma & biotech, and pool & recreational water technology. The group’s business is organised into specialised divisions (including BWT Pharma & Biotech and consumer/foodservice lines), and it combines product engineering with aftermarket service, spare parts and global distribution channels.
Establishment: 1990
Headquarters: Mondsee, Upper Austria, Austria
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Founded in 1949, Kurita Water Industries Ltd. is a Japanese water-technology company with a long history of supplying chemicals, equipment and services for industrial and municipal water treatment. Kurita began as a boiler water-treatment chemical business and expanded into facilities, process chemicals, R&D and lifecycle services. Today the Kurita Group operates globally with subsidiaries across Asia, the Americas and Europe, positioning itself as a practical partner for industries seeking to improve water efficiency, reduce environmental impact and maintain regulatory compliance.
In its water treatment equipment business, Kurita offers a broad portfolio that spans raw-water pretreatment and filtration, reverse-osmosis and membrane solutions, wastewater treatment and reclamation systems, dewatering and solids handling equipment, and integrated packaged plants for process and ultrapure water. The company pairs its physical equipment with specialty treatment chemistries, monitoring & automation tools and operation & maintenance services — a combination aimed at lowering lifecycle cost and maximising uptime for customers in electronics, power, petrochemical, food & beverage, steel and other heavy industries.
Establishment: 1949
Headquarters: Nakano-ku, Tokyo, Japan
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Founded in 1923, Ecolab Inc. is a global leader in water, hygiene and infection-prevention technologies and services. Headquartered in Saint Paul, Minnesota, Ecolab serves customers across foodservice, hospitality, healthcare, industrial and municipal markets with a combination of science-driven products, field service and digital tools. The company grew through decades of product innovation and strategic acquisitions—most notably Nalco Water—and today it positions itself as a partner for customers seeking to reduce water and energy use, improve operational reliability, and meet sustainability goals worldwide.
In the area of water treatment equipment, Ecolab (including Nalco Water & Process Services) provides a broad portfolio of industrial and municipal solutions: chemical treatment programs, membrane and cartridge filtration systems, ultrafiltration and reverse-osmosis skids, cooling- and boiler-water treatment equipment, sludge dewatering and separation units, and packaged treatment plants for process and ultrapure water. Ecolab pairs physical equipment with analytics and control platforms (for example 3D TRASAR™ and other digital monitoring services), specialty chemistries, and lifecycle services to deliver integrated water-resiliency, reuse and wastewater treatment solutions for sectors such as semiconductor, power, food & beverage, and manufacturing.
Establishment: 1923
Headquarters: Saint Paul, Minnesota, United States
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Meidensha Corporation (MEIDEN) is a long-established Japanese engineering and manufacturing group founded in December 1897. Traditionally known for electric motors, generators and heavy electrical equipment, Meidensha has grown into a diversified provider of social-infrastructure systems with a strong focus on water and sewerage infrastructure, industrial systems and lifecycle services. The company positions itself as a partner for municipalities and industries that need reliable, energy-efficient infrastructure and digitalised operational support—backed by more than a century of engineering experience and an expanding global network.
In the area of water treatment equipment, Meidensha supplies end-to-end solutions for drinking water, sewage and industrial wastewater applications. Its water portfolio includes membrane filtration systems and compact MBR units for drinking-water treatment, ceramic flat-sheet membrane products for durable filtration, industrial wastewater treatment systems (including high-performance filtration and nitrogen removal processes), water quality measurement instruments, automated water supply control systems and cloud/ICT services for distribution and facility management. Meidensha also offers design, manufacturing, construction, operation and maintenance services—helping utilities and industrial customers deploy packaged treatment skids, monitoring platforms and lifecycle support to improve water quality, reduce energy use and increase operational resilience.
Establishment: December 22, 1897
Headquarters: Shinagawa-ku, Tokyo, Japan
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Ovivo Inc. is a global water and wastewater treatment specialist built from more than a century of heritage brands and system-integration expertise. The company traces its corporate roots through Groupe Laperrière & Verreault (GL&V) and rebranded as Ovivo in December 2014 when it refocused exclusively on water technologies. Today Ovivo operates an integrated global platform with offices and manufacturing in many markets and is majority-owned by SKion Water GmbH; the business emphasises sustainable, engineered solutions for municipal and industrial customers worldwide. :contentReference[oaicite:0]{index=0}
In the realm of water treatment equipment, Ovivo supplies a broad portfolio that spans clarification and sedimentation systems, membrane technologies (including silicon-carbide membranes and SiCBLOX solutions), sludge thickening and dewatering (MBT), filtration and screening, packaged treatment skids, and turnkey municipal and industrial plants. The group combines legacy brands and specialised product lines (for example Brackett Green®, Caird & Rayner Clark, Cembrane® and Alar®) with system engineering, aftermarket services and digital support to deliver projects from design through lifecycle maintenance.
Establishment: 1975
Headquarters: Montréal, Québec, Canada
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Ebara Corporation is a long-established Japanese engineering and manufacturing group best known for its pumps and environmental machinery. The company traces its roots to the founding of the Inokuty Type Machinery Office in November 1912 and has since grown into a diversified global supplier for infrastructure, energy and environmental markets. Ebara combines manufacturing scale with engineering R&D to support municipal utilities, industry and process sectors — emphasising reliability, energy efficiency and long-term lifecycle support.
In the field of water and wastewater treatment equipment, Ebara specialises in pumping and hydraulics technologies that form the backbone of many treatment plants: submersible and surface pumps for clean water, sewage and sludge; large multistage and turbine pumps for desalination and high-head applications; mixers and aeration equipment; and packaged pumping/mix/processing skids. Ebara also supplies ancillary equipment for treatment plants (including screening, grit-handling interfaces and dewatering support), and integrates its hardware with engineering services to deliver turnkey water, wastewater and desalination projects worldwide. The company’s product breadth — backed by regional manufacturing and service networks — makes it a frequent choice for municipal and industrial water infrastructure projects.
Establishment: 1912
Headquarters: Tokyo, Japan
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As global demand for clean, safe, and sustainable water solutions continues to rise, choosing the right technology partner has never been more important. The companies featured above represent the forefront of water treatment innovation in 2025, but finding the right system for your unique needs requires expertise, precision, and trust.
Weilan stands ready to be that partner. With a commitment to quality, sustainability, and advanced water technology, Weilan provides reliable equipment and customized solutions to help industries and communities achieve cleaner, safer water for a better future. Contact Weilan today to learn how we can help you build a smarter and more sustainable water management system.
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