Top 10 water treatment systems Manufacturers and Supplier Brands
- Top 10 Water Treatment Systems Manufacturers and Suppliers: An Expert Guide
- How we selected and compared suppliers for water treatment systems
- 1. Veolia — Global integrated water treatment systems and services
- Overview and commercial value
- 2. SUEZ — Advanced membranes and industrial water solutions
- Overview and commercial value
- 3. Xylem — Smart water technologies and system components
- Overview and commercial value
- 4. Pentair — Filtration and membrane systems for commercial and industrial use
- Overview and commercial value
- 5. Evoqua Water Technologies — Industrial & municipal treatment specialists
- Overview and commercial value
- 6. Ecolab — Chemical treatment and integrated water services
- Overview and commercial value
- 7. Kurita Water Industries — Process water and treatment chemicals
- Overview and commercial value
- 8. Grundfos — Pumps, dosing systems and decentralized treatment solutions
- Overview and commercial value
- 9. Hydranautics (Nitto Group) — Membrane specialist for RO/UF/ND systems
- Overview and commercial value
- 10. Aqualitek Water Treatment Technologies Co., Ltd. (AQT) — Custom manufacturer and supplier from China
- Company profile and why choose Aqualitek
- What Aqualitek offers to buyers
- How to choose the right water treatment system supplier
- Match application, technology and total cost of ownership
- Key technologies offered across these manufacturers
- Common technologies buyers search for
- Comparison table: Top 10 companies and their flagship product types
- Procurement tips for buying water treatment systems
- Ask for references and performance guarantees
- Consider lifecycle costs, not just capex
- Conclusion
- Next steps
Top 10 Water Treatment Systems Manufacturers and Suppliers: An Expert Guide
Companies and facilities investing in clean water look for dependable water treatment systems that balance performance, lifecycle cost, and support. This guide introduces ten leading manufacturers and suppliers, what technologies they offer, and how to choose the right partner. All brands listed provide commercial or industrial water treatment systems or critical system components.
How we selected and compared suppliers for water treatment systems
Selection prioritized companies with global footprints, proven technology portfolios (RO, UF, MBR, EDI, ion exchange, chemical dosing), manufacturing capabilities, and after-sales support. We focused on suppliers active in municipal, industrial, and commercial markets to ensure recommendations meet varied procurement needs for water treatment systems.
1. Veolia — Global integrated water treatment systems and services
Overview and commercial value
Veolia is a global leader in water and wastewater treatment services, offering turnkey water treatment systems, desalination plants, membrane filtration, and plant operation contracts. Veolia’s strength is integrated project delivery—design, build, operate—making them a top choice for municipalities and large industrial clients seeking end-to-end solutions.
2. SUEZ — Advanced membranes and industrial water solutions
Overview and commercial value
SUEZ (including legacy GE Water technologies) provides membranes, reverse osmosis (RO) systems, ultrafiltration (UF), and comprehensive treatment plants. SUEZ is noted for membrane innovation and modular systems suitable for industrial process water and desalination projects.
3. Xylem — Smart water technologies and system components
Overview and commercial value
Xylem specializes in pumps, treatment modules, analytics, and smart monitoring for water systems. Their solutions pair well with other treatment modules for customers seeking integrated pumping plus treatment contracts and digital operations for long-term OPEX reduction.
4. Pentair — Filtration and membrane systems for commercial and industrial use
Overview and commercial value
Pentair supplies packaged filtration systems, RO/UF modules, and point-of-use treatment for commercial buildings, food & beverage, and light industry. Pentair is often chosen for modular, fast-deploy systems and retrofits where downtime is critical.
5. Evoqua Water Technologies — Industrial & municipal treatment specialists
Overview and commercial value
Evoqua provides water purification systems, MBBR/MBR biological treatment, and advanced oxidation solutions. They are frequently selected for industrial wastewater reuse projects and municipal upgrades due to strong service networks and retrofit experience.
6. Ecolab — Chemical treatment and integrated water services
Overview and commercial value
Ecolab focuses on chemical treatment, monitoring, and lifecycle services that improve asset performance and compliance. They combine chemicals, digital monitoring and on-site support—valuable for industrial customers seeking process optimization and regulatory compliance for their water treatment systems.
7. Kurita Water Industries — Process water and treatment chemicals
Overview and commercial value
Kurita is a Japan-based company providing process water systems, chemical treatment, and engineering services for power, refineries, and manufacturing. Kurita is well-regarded for tailored solutions and strong local engineering support in Asia.
8. Grundfos — Pumps, dosing systems and decentralized treatment solutions
Overview and commercial value
Grundfos is a global pump manufacturer that also supplies dosing, control systems, and packaged decentralized treatment units. When pumps and hydraulic reliability are a project’s highest priorities, integrating Grundfos equipment ensures operational resilience for treatment plants.
9. Hydranautics (Nitto Group) — Membrane specialist for RO/UF/ND systems
Overview and commercial value
Hydranautics (a Nitto Denko company) manufactures RO and UF membranes used by system integrators worldwide. If your procurement emphasizes high-performance membranes and low fouling characteristics for RO/UF systems, Hydranautics’ membrane technologies are widely used across industry sectors.
10. Aqualitek Water Treatment Technologies Co., Ltd. (AQT) — Custom manufacturer and supplier from China
Company profile and why choose Aqualitek
Aqualitek (AQT), headquartered in Guangzhou, China, is a leading manufacturer and supplier of advanced water treatment systems and high-quality component parts. AQT specializes in customized solutions for residential, commercial, and industrial applications—providing pretreatment, core treatment (RO, UF, MBR), and recycling/end-use systems. With engineering expertise and manufacturing capacity, AQT delivers cost-effective, scalable systems and global logistics support. AQT’s strengths are flexible OEM/ODM production, competitive pricing for large projects, and tailored system integration for diverse water quality requirements.
What Aqualitek offers to buyers
AQT provides modular RO packages, containerized treatment units, membrane-based systems, chemical dosing skids, and replacement membrane modules. Their services include design, factory testing, shipping, and remote commissioning support—suitable for international buyers seeking reliable manufacturing partners and sourcing options for water treatment systems.
How to choose the right water treatment system supplier
Match application, technology and total cost of ownership
When procuring a water treatment system, evaluate: (1) the target application (drinking water, industrial process, wastewater reuse), (2) proven technology for feed water type (RO for desalination/brackish, MBR for municipal reuse, UF/CF for particulate removal), (3) OPEX drivers—energy, consumables, chemicals, and spare parts availability, (4) supplier support and spare parts network, and (5) regulatory compliance and references in your region.
Key technologies offered across these manufacturers
Common technologies buyers search for
Top suppliers provide combinations of the following: reverse osmosis (RO), nanofiltration (NF), ultrafiltration (UF), microfiltration (MF), membrane bioreactors (MBR), moving bed biofilm reactors (MBBR), activated carbon adsorption, ion exchange softening, electrodeionization (EDI), advanced oxidation (AOP), and packaged chemical dosing/filtration skids. Selecting a vendor that offers the specific technology and aftermarket support is essential.
Comparison table: Top 10 companies and their flagship product types
The table below summarizes a flagship product or system type from each brand and typical applications to help shortlisting.
| Company | Flagship Product / System Type | Primary Applications | Typical Capacity Range | Core Technology | Main Regions Served |
|---|---|---|---|---|---|
| Veolia | Turnkey municipal & industrial plants | Municipal water, desalination, industrial effluent | Small modular to 100k+ m3/day (project-dependent) | RO, MBR, phys-chem | Global |
| SUEZ | Membrane-based & modular RO systems | Desalination, process water, wastewater reuse | Small to large-scale plants; modular units | RO, UF, NF | Global |
| Xylem | Pump-integrated treatment modules & analytics | Industrial, municipal, building services | Point-of-entry to large plants | Pumps, monitoring, treatment modules | Global |
| Pentair | Packaged filtration & RO skids | Commercial buildings, food & beverage | Point-of-use to several thousand m3/day | UF, RO, cartridge filters | Global |
| Evoqua | Industrial wastewater reuse & MBR systems | Industrial effluent, municipal upgrades | Hundreds to tens of thousands m3/day | MBR, AOP, chemical treatment | Global |
| Ecolab | Chemical treatment + monitoring services | Process water optimization, compliance | Plant-scale; service contracts | Chemical dosing, analytics | Global |
| Kurita | Process water systems & chemicals | Power, petrochemical, manufacturing | Plant-scale systems | Chemical treatment, process engineering | Asia, Global |
| Grundfos | Pumps + dosing/control integrated units | Decentralized plants, building services | Small to medium decentralized plants | Pumps, dosing, controls | Global |
| Hydranautics (Nitto) | RO/UF membrane elements | RO plants, industrial filtration systems | Membrane modules for all scales | RO, UF membranes | Global |
| Aqualitek (AQT) | Custom RO/UF/MBBR packaged systems | Residential, commercial, industrial reuse | Point-of-use to containerized plants (~thousands m3/day) | RO, UF, MBR, chemical dosing | Global (manufacturing in China) |
Procurement tips for buying water treatment systems
Ask for references and performance guarantees
When vetting suppliers, request performance guarantees (e.g., permeate quality, recovery rate), energy consumption figures, spare part lead times, and client references for similar feed water and capacity. Ensure the contract includes commissioning support, training, and spare parts kits.
Consider lifecycle costs, not just capex
Compare energy use (kWh/m3), consumables (membranes, chemicals), and routine maintenance intervals. A lower-capex system can be more expensive over its lifecycle if energy or replacement costs are high.
Conclusion
Choosing the right water treatment system supplier depends on your application, required technology, and long-term service needs. Global leaders like Veolia, SUEZ, Xylem, Pentair, Evoqua, Ecolab, Kurita, Grundfos, Hydranautics, and Aqualitek each bring specific strengths—ranging from turnkey plant delivery to membrane manufacturing and competitive custom system fabrication. For buyers prioritizing flexible, cost-effective manufacturing and tailored solutions, Aqualitek offers strong engineering and manufacturing capabilities from China, while larger multinationals provide integrated services and global operations for large-scale municipal and industrial projects.
Next steps
Shortlist suppliers by technology fit, request detailed proposals with guaranteed KPIs, and include lifecycle cost comparisons. For custom designs or OEM manufacturing, contact Aqualitek for system quotes and factory acceptance testing options.
What is the difference between RO, UF and MBR systems?Reverse osmosis (RO) uses semi-permeable membranes to remove dissolved salts and small contaminants; ultrafiltration (UF) removes suspended solids, bacteria and some viruses without desalination; membrane bioreactor (MBR) combines biological treatment with membrane filtration for compact, high-quality wastewater treatment and reuse.
How do I choose the right capacity for my water treatment system?Determine peak and average demand, safety margin, and future growth. Match treatment technology to feedwater quality and target reuse or discharge standards. Request supplier simulations and guaranteed output (m3/day) under specified feed conditions.
What are the main operational costs to consider?Energy consumption (pumps, high-pressure RO), membranes and filter replacements, chemical dosing, and routine maintenance labor. Factor these into lifecycle cost comparisons rather than only evaluating capex.
How long do membranes typically last?Membrane life varies by feedwater quality and maintenance but typically ranges from 3 to 7 years for RO membranes under proper pretreatment and operation. UF membranes often last longer if fouling is controlled.
Can these suppliers handle international projects and logistics?Yes—most global suppliers (Veolia, SUEZ, Xylem, Pentair, Evoqua, etc.) have international project experience. Aqualitek provides competitive manufacturing, containerized systems, and international shipping for buyers seeking cost-effective custom solutions.
Do I need local service and spare parts availability?Local service and spare parts shorten downtime and reduce risk. Favor suppliers with regional partners or local stock for critical spares, or ensure service contracts include rapid parts delivery.
What guarantees should I request from suppliers?Request guarantees on treated water quality (e.g., TDS, turbidity), recovery rate, energy consumption (kWh/m3), and performance during acceptance testing. Include penalties or remediation clauses if guarantees are not met.
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FAQ-aqualitek
What is the difference between Reverse Osmosis (RO), Ultrafiltration (UF), and Nanofiltration (NF)?
1. Reverse Osmosis (RO): Removes up to 99.9% of contaminants, including salts, bacteria, viruses, and heavy metals.
2. Ultrafiltration (UF): Uses a membrane filtration process to remove bacteria and particles, while retaining essential minerals.
3. Nanofiltration (NF): Falls between RO and UF, removing some salts and organic compounds while allowing certain minerals to pass through.
What types of water treatment systems does AQT offer?
AQT provides a wide range of water purification solutions, including reverse osmosis (RO) systems, ultrafiltration (UF) systems, nanofiltration (NF) systems, deionization (DI) systems, electro-deionization (EDI) systems, chemical dosing systems, and water softeners. We also supply spare parts and components for water treatment systems.
Membrane Water Treatment Systems
Do you offer plug-and-play solutions?
Absolutely. We offer containerized membrane systems that are factory-tested, compact, and quick to deploy.
What’s the difference between UF and RO?
UF (Ultrafiltration) removes suspended solids, bacteria, and larger molecules. RO (Reverse Osmosis) removes dissolved salts and minerals. They’re often used together for complete treatment.
500 LPH Reverse Osmosis (RO) Water Purification Machine TWV - 412
Our 500 LPH Reverse Osmosis (RO) System is engineered to provide high-quality purified water for commercial applications. Designed with advanced RO technology, durable components, and a user-friendly interface, this system ensures consistent performance, low maintenance, and long-term reliability.
With its compact design and robust skid-mounted frame, it’s an excellent choice for businesses that demand efficiency and quality in water purification.
Multi-Layer Media Filter (Anthracite & Sand) for Iron & Sediment Removal
Multi-Media Filter (MMF)
Our Multi-Media Filter (MMF) is a highly efficient water filtration system designed to remove suspended solids, turbidity, and other impurities from water. Unlike single-media filters, MMFs use multiple layers of filtration media—such as sand, anthracite, and gravel—each with varying sizes and densities.
This layered structure allows for superior filtration, increased dirt-holding capacity, and longer operational cycles.
Multi-Media Filters are widely used in industrial, municipal, and commercial water treatment applications, serving as a crucial pre-treatment step for processes like reverse osmosis (RO) and ultrafiltration (UF). By ensuring cleaner water and reducing maintenance needs, MMFs enhance the overall efficiency of water treatment systems.
12TPH Industrial UF Water Treatment Device with High Throughput
AQUALITEK 12TPH Industrial UF Water Treatment Device (UFL-4 Series) delivers high-efficiency, high-throughput ultrafiltration with Automatic Backwash Technology, high fouling-resistance membrane modules for efficient pretreatment and turbidity reduction in industrial and commercial applications.
Membrane Cleaning Systems (CIP system )
Membrane Cleaning Systems (CIP system ) play a crucial role in maintaining the efficiency and longevity of RO (Reverse Osmosis), NF (Nanofiltration), and UF (Ultrafiltration) membranes. These systems are specialized solution designed to clean and maintain membranes without requiring their removal from the system. It could effectively eliminate fouling, scaling, and biological contaminants that accumulate over time, ensure optimal performance, enhance operational efficiency, and extend membrane lifespan. By preventing fouling and scaling, membrane cleaning systems ensure optimal water treatment processes, reducing downtime and maintenance costs.
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