Water is one of the most critical resources used in any industrial process — but managing it responsibly is no longer optional. Industries across the USA today face strict environmental regulations, rising water costs, and growing pressure to operate sustainably. That makes choosing the right industrial wastewater treatment partner a critical business decision, not just an operational one. From food and beverage to pharmaceuticals, chemicals, and oil and gas, the right wastewater treatment solution can help a business save money, stay compliant, and protect its brand reputation. In this guide, we’ve put together a research-backed list of the top 10 industrial wastewater treatment companies in the USA, evaluated on technology, industry coverage, products, services, and overall value to business clients.

Quick Comparison: Top 10 Industrial Wastewater Treatment Companies in the USA

#	Company	Best For	Technology	Industries
1	OXYMO Technology	MBR & membrane systems	MBR, UF, MABR, ZLD	Food, Pharma, Oil & Gas, Textile, Chemical
2	Veolia North America	O&M outsourcing	ZLD, RO, membrane filtration	Oil & Gas, Power, Food & Beverage
3	Xylem Inc.	Smart water systems	IoT, UV, pumps, RO	Municipal, Industrial
4	Evoqua Water Technologies	Rapid deployment	Modular, biological treatment	Food, Pharma, Electronics
5	Ecolab Inc.	Chemical programs	Coagulants, digital monitoring	Food & Beverage, Healthcare
6	Pentair plc	Compact filtration	UF, RO, MBR	Industrial, Food Processing
7	Aquatech International	ZLD & brine treatment	ZLD, high-recovery	Power, Oil & Gas, Mining
8	SUEZ Water Tech. & Solutions	Digital process control	IoT, membrane, resource recovery	Chemical, Pharma, Power
9	Calgon Carbon	PFAS & contaminant removal	Activated carbon, UV	Municipal, Power, Mining
10	Ecologix Environmental Systems	Biological treatment	DAF, oil-water separation	Food & Beverage, Oil & Gas

 

1. OXYMO Technology— Best Industrial Wastewater Treatment Company in the USA

Key Services: MBR, UF, MABR, ZLD, membrane distillation, sewage treatment plant design and installation

Industries Served: Food & Beverage, Pharmaceutical, Oil & Gas, Chemical & Petrochemical, Textile, Paper & Pulp, Municipal, Electronics & Semiconductor

OXYMO Technology has established itself as a leading choice for industrial wastewater treatment in the USA. With 15 years of expertise in advanced membrane technology, the company brings together innovation, reliability, and global project experience.

OXYMO is a USA-based company with an extensive R&D program developed jointly with leading universities and research institutions. The company holds several patents in advanced membrane material production and is certified to ISO 9001 and ISO 14001 standards, reflecting its commitment to quality management and environmental protection.

OXYMO has delivered hundreds of municipal and industrial water and wastewater treatment projects in more than 40 countries. The company provides custom, end-to-end treatment systems built on advanced membrane technology for a wide range of US industries.

Key Products & Services

• Membrane Bioreactor (MBR) Systems — biological treatment combined with membrane filtration for superior effluent quality.
• Ultrafiltration (UF) Membrane Systems — suited to water reuse and industrial pre-treatment.
• Membrane Aerated Biofilm Reactor (MABR) — an energy-efficient nutrient removal solution.
• Flat-sheet MBR and hollow-fiber membranes, available in PVDF, PAN, and alloy-PVC configurations.
• Sewage Treatment Plant (STP) design, installation, and commissioning.
• Gravity UF Series and Standard UF Series.
• Membrane distillation systems.
• After-sales support, system maintenance, and operating consultation.

What Makes OXYMO Technology Stand Out?

The United States is home to many wastewater treatment firms, but few combine patented technology, ISO-certified manufacturing, global project experience, and industry-specific customization the way OXYMO does.

• University R&D partnerships supporting patented membrane innovations.
• ISO 9001 / 14001-certified manufacturing for consistent quality.
• CE-certified, globally compliant membrane products.
• Up to 50% savings on aeration costs through energy-saving MABR technology.
• Compact system design that reduces plant footprint by 30–50%.
• Full lifecycle services, from design and commissioning through ongoing maintenance.
• Project experience across 40+ countries and a wide range of industrial sectors.

For US-based companies seeking a trusted, technology-driven wastewater treatment partner, OXYMO Technology offers a combination of capabilities few competitors can match.

2. Veolia North America

Headquarters: Boston, Massachusetts

Founded: 1853 (global); extensive North American operations

Key Services: O&M contracts, ZLD systems, water reuse, membrane filtration, clarification, ion exchange, reverse osmosis

Industries Served: Oil & Gas, Power Generation, Food & Beverage, Pharmaceuticals, Manufacturing

Veolia is a global leader in environmental services with one of the largest industrial water treatment presences in North America. The company manages more than 6,500 water and wastewater treatment facilities worldwide and serves over 100 industrial facilities in the USA.

Veolia’s core strength is long-term operations and maintenance (O&M) contracts backed by performance guarantees, covering primary, secondary, and tertiary treatment as well as zero liquid discharge (ZLD). It’s a trusted partner for businesses seeking outsourced, full-lifecycle water management.

3. Xylem Inc.

Headquarters: Rye Brook, New York

Founded: 2011 (spun off from ITT)

Key Services: Pumps, filtration, reverse osmosis, smart metering, UV disinfection, predictive maintenance

Industries Served: Municipal, Industrial, Commercial, Residential

Xylem is a leading name in water technology, offering smart water solutions built around sensor-based systems. The company employs roughly 23,000 people globally across water infrastructure, applied water, and measurement and control.

Xylem’s digital-first approach lets industrial customers monitor and fine-tune their systems in real time through IoT platforms, predictive maintenance tools, and smart sensors. Its portfolio includes well-known brands such as Flygt, Godwin, Goulds Water Technology, and Bell & Gossett.

4. Evoqua Water Technologies

Headquarters: Pittsburgh, Pennsylvania

Key Services: Modular and containerized systems, biological treatment, ion exchange, UV disinfection, after-sales support

Industries Served: Food & Beverage, Pharma, Municipal, Power, Electronics

Evoqua has built a strong reputation for quick-setup modular wastewater treatment systems — a solution well suited to companies facing tightening environmental rules or needing to scale treatment capacity fast. Its containerized systems require minimal civil work and can be operational within days or even hours.

Evoqua also offers strong post-sales support and regulatory guidance. Since being acquired by Xylem in 2023, it has expanded its capabilities, broadened its product portfolio, and strengthened its digital solutions.

5. Ecolab Inc.

Headquarters: Saint Paul, Minnesota

Founded: 1923

Key Services: Water treatment chemicals, hygiene solutions, monitoring programs, digital water management

Industries Served: Food & Beverage, Hospitality, Healthcare, Oil & Gas, Mining, Pulp & Paper

Ecolab is a global leader in water treatment chemicals and process hygiene solutions. Beyond equipment-based treatment systems, it offers a full line of chemical treatment programs, digital monitoring, and on-site service expertise. Its proprietary digital platforms let customers track water consumption and chemical dosing in real time across multiple units, helping reduce waste and improve overall system efficiency.

In food and beverage, where hygiene and regulatory compliance are critical, Ecolab offers an extensive range of coagulants, flocculants, anti-foaming agents, and specialty cleaning chemicals.

6. Pentair plc

Headquarters: Dublin, Ireland (US operations in Minneapolis, MN)

Founded: 1966

Key Services: Ultrafiltration, reverse osmosis, MBR systems, pressure vessels, wastewater reuse

Industries Served: Industrial, Commercial, Residential, Food Processing

Pentair is a well-established manufacturer of filtration and membrane separation products. Its industrial and flow technologies division supplies MBR systems, pressure vessels, pumps, and other advanced membrane filtration technologies for space-constrained applications.

Its focus on compact, low-energy design makes Pentair a strong fit for manufacturing facilities where space and energy efficiency are priorities. The company continues to invest in R&D to keep its product line at the forefront of industrial effluent reuse technology.

7. Aquatech International

Headquarters: Canonsburg, Pennsylvania

Founded: 1981

Key Services: ZLD systems, brine concentration, seawater desalination, industrial water treatment, wastewater recycling

Industries Served: Power, Oil & Gas, Chemical, Mining, Food & Beverage

Aquatech is an American water treatment technology company specializing in zero liquid discharge (ZLD) and high-recovery systems. Founded in 1981, it has built a reputation for customized, high-performance water treatment solutions across sectors.

Aquatech excels in applications where many competitors fall short, including brine concentration, produced water treatment, and industrial wastewater recycling. The company also provides full turnkey solutions for capital-intensive projects, from engineering through commissioning.

8. SUEZ Water Technologies & Solutions

Headquarters: Trevose, Pennsylvania (parent company: SUEZ Group, France)

Key Services: Digital monitoring, membrane systems, resource recovery, IoT-enabled treatment, process optimization

Industries Served: Power, Chemical, Pharma, Food & Beverage, Oil & Gas, Mining

SUEZ brings extensive engineering expertise and advanced digital solutions to large-scale industrial wastewater management. It designs and deploys real-time process control platforms using IoT and data analytics to help clients cut waste and improve operational efficiency.

With a strong focus on resource recovery and recycling, SUEZ aligns closely with the circular-economy goals many US industries are pursuing — offering an attractive combination of innovative technology and service reliability for clients where both performance and accountability matter.

9. Calgon Carbon Corporation

Headquarters: Pittsburgh, Pennsylvania (parent company: Kuraray Co., Ltd.)

Key Services: Activated carbon solutions, UV systems, PFAS removal, odor control, mercury removal

Industries Served: Municipal, Power, Food & Beverage, Chemical, Mining

Calgon Carbon is a trusted name in water purification, best known for its highly effective activated carbon solutions and contaminant removal technology. The company also brings expertise in UV disinfection systems, mercury abatement for coal-fired power plants, PFAS remediation, and odor control.

As US regulation of emerging contaminants becomes stricter, industrial clients increasingly value Calgon Carbon’s expertise in this area. Both industrial and municipal clients rely on its purification systems to address some of the most challenging water quality problems.

10. Ecologix Environmental Systems

Headquarters: Alpharetta, Georgia

Key Services: Biological treatment systems, DAF systems, oil-water separation, modular systems, on-site support

Industries Served: Food & Beverage, Oil & Gas, Municipal, Industrial

Ecologix builds energy-efficient, environmentally friendly biological wastewater treatment systems, including popular dissolved air flotation (DAF) systems and oil-water separators for food processing and oil and gas customers.

Its modular design makes Ecologix an attractive option for mid-size industrial plants that want effective treatment without major capital investment, offering easy installation, scalability, and maintenance. A strong on-site support team adds further value for clients across the USA.

How to Choose the Right Industrial Wastewater Treatment Company

Not every company on this list will be the right fit for every business. Here’s what to consider before deciding:

• Treatment requirements — what pollutants are you working with: BOD, COD, heavy metals, PFAS?
• Water reuse objectives — are you targeting full or partial water reuse?
• Zero liquid discharge goals — is ZLD a requirement, or only partial discharge reduction?
• Regulatory compliance — what local and federal discharge requirements apply to your facility?
• Budget model — does a CapEx or O&M approach fit your business better?
• Industry experience — has the company worked successfully in your specific sector?

In general, a provider that supports the full project lifecycle — from conceptualization through installation and ongoing maintenance — is best positioned to serve most industrial businesses over the long term.

Conclusion

Industrial wastewater treatment in the USA is evolving quickly. With environmental regulations tightening, water scarcity growing, and companies deepening their sustainability commitments, water management can no longer be an afterthought. The right treatment partner shouldn’t just keep you compliant — it should make your operation more efficient and more competitive.

From global leaders like Veolia and Xylem to innovators like Aquatech and Ecologix, every company on this list brings distinct strengths to the table. For companies that prioritize advanced membrane technology, global project experience, ISO-certified quality, and end-to-end service, OXYMO Technology stands out as a strong choice for industrial wastewater treatment in the United States and beyond.

Looking for the right wastewater treatment solution for your business? Contact OXYMO Technology today. Our team can assess your requirements, identify the right technology, and build a solution tailored to your industry — so you can stay focused on your core business while we handle the water.

oxymo@oxymembrane.com

+86 130 0635 3124

FAQs

Why is OXYMO Technology a top industrial wastewater treatment company in the USA?

Rather than offering off-the-shelf solutions, OXYMO Technology designs custom MBR systems matched to each plant’s specific treatment needs. It’s a reliable long-term partner, delivering compact, energy-efficient systems and high-quality effluent suitable for reuse.

How much does industrial wastewater treatment cost?

Cost depends on the level of contamination, the technology used, and the size of the plant. In general, pricing ranges from a few hundred thousand dollars to several million dollars per system.

What is MBR wastewater treatment?

MBR stands for membrane bioreactor — a technology that combines biological treatment with membrane filtration to produce high-quality effluent, often suitable for reuse.

How do I choose the right wastewater treatment company for my plant?

Look for a company with a proven track record in your industry and the ability to deliver treatment solutions tailored to your specific wastewater characteristics.