Top 12 Water Purification Companies in the US | 2025 Updated List

Water purification companies in the United States are becoming increasingly vital as concerns over water quality continue to rise.

Access to clean and safe water is a basic human right, yet contamination from agricultural runoff, domestic sewage, and industrial waste threatens this essential resource.

Harmful substances such as chlorine, lead, fluorine compounds, mercury, pesticides, and pathogens are commonly found in tap water, posing risks to human health and reducing the availability of safe water.

These pollutants can increase the cost of water treatment for utilities and affect the quality of life for communities across the country.

In response, water purification companies provide essential solutions that remove impurities and restore water to safe, drinkable standards.

Using technologies such as reverse osmosis, UV disinfection, activated carbon filtration, and ion exchange, these companies help ensure that households and businesses have access to clean, reliable water.

By tackling both chemical and biological contaminants, water purification companies support public health and contribute to environmental sustainability.

As water safety becomes an even more critical issue, their role in protecting and preserving the nation’s water supply has never been more important.

In this article we will examine the top 12 water purification companies in the US to help you select the best company for residential, commercial or industrial usage.

Water Purification Companies in the US

1- Xylem Inc

Xylem, Inc., founded in 2011 and headquartered in Rye Brook, U.S., is one of the leading water purification companies** with a global presence.

The company specializes in designing and manufacturing engineered solutions for water and wastewater applications, addressing critical challenges in water management and sustainability.

Xylem operates through three core business segments: Water Infrastructure, Applied Water, and Sensus. Each segment focuses on delivering innovative technologies and services that support efficient water use, wastewater treatment, and smart metering solutions.

With operations spanning North America, Europe, Asia-Pacific, the Middle East and Africa, and Latin America, Xylem helps communities and industries improve water quality, reduce waste, and ensure reliable access to clean water.

Through advanced purification systems, monitoring tools, and smart infrastructure, Xylem continues to play a vital role in promoting water sustainability and supporting global efforts to meet rising water demands and environmental goals.

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2. Dow Water & Manner solutions

One of the best water purification companies, established in 1985 and based in Edina, U.S., is recognized for its expertise in delivering advanced water purification and separation solutions.

The company focuses on the manufacturing, marketing, and sale of innovative technologies that address critical water quality challenges across industries and communities.

A key part of its offerings includes polymeric adsorbent resins, which are engineered polymers designed for efficient contaminant removal.

The company also provides specialized catalysts, including acid and base type catalysts, as well as catalysts for immobilized metal applications, supporting a wide range of industrial purification and chemical processes.

With a strong global footprint, this company operates in North America, Europe, Asia-Pacific, the Middle East and Africa, and Latin America.

Its solutions help industries achieve cleaner water, support environmental sustainability, and contribute to safe water access in diverse regions around the world.

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2. EVOQUA WATER technologies CORPORATION

Evoqua Water Technologies, founded in 2013 and headquartered in Pittsburgh, U.S., is one of the prominent water purification companies driving innovation in water and wastewater treatment solutions.

The company specializes in designing, developing, and manufacturing advanced systems that help industries and communities ensure clean and safe water.

Evoqua serves a wide range of sectors through its diverse segments, including food and beverage, life sciences, marine, mining, energy, semiconductor and solar, drinking water and municipal wastewater treatment, industrial, institutional, and aquatics.

Its comprehensive technologies support sustainable water use, regulatory compliance, and operational efficiency across these critical industries.

With a robust global presence spanning North America, Europe, Asia-Pacific, the Middle East and Africa, and Latin America, Evoqua continues to play a vital role in addressing the world’s water challenges through reliable and high-performance purification solutions.

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4- 3M

3M, founded in 1902 and headquartered in Minnesota, U.S., is a global diversified technology company known for its innovative solutions across numerous industries.

The company operates in sectors such as automotive, industrial solutions, communications, design and production, electronics, energy, health care, manufacturing, mining, oil and gas, safety, and transportation.

Among its wide-ranging offerings, 3M provides essential water infrastructure products, contributing to the water purification and protection industry.

These products include potable water rehabilitation solutions, protective coatings for water pipes and tanks, and shielding solutions for wastewater systems.

3M’s technologies enhance the durability, safety, and efficiency of water and wastewater infrastructure globally.

With a strong presence in North America, Europe, Asia-Pacific, the Middle East and Africa, and Latin America, 3M continues to support critical infrastructure projects and promote sustainable water management across the world.

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5- ITT Inc.

ITT Inc., founded in 1920 and headquartered in White Plains, U.S., is a global leader among water purification companies and industrial technology providers.

The company designs, manufactures, and sells highly engineered components and customized solutions for the energy, transportation, and industrial sectors.

ITT operates through four key segments: Industrial Process, Motion Technologies, Interconnect Solutions, and Control Technologies.

Its Industrial Process division is particularly vital to the water industry, producing centrifugal pumps, vertical centrifugal pumps, twin screw pumps, valves, and complete water systems used in purification and plant optimization.

ITT also offers comprehensive aftermarket solutions, including maintenance, repair, and system upgrades, helping clients improve efficiency and extend equipment lifespan.

With a solid global presence across North America, Europe, Asia-Pacific, the Middle East and Africa, and Latin America, ITT supports critical infrastructure projects and promotes sustainable water management worldwide through innovative water purification and pumping technologies.

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6. Gravity flow systems

Gravity Flow Systems has been a trusted name in the water treatment and purification industry for over forty years.

Originally known as Hendricks Fluid Systems, the company pioneered the use of natural forces, such as gravity, to separate solids from liquids efficiently.

In the early 1970s, it introduced the innovative Gravity Dewatering Filter Bed System, which utilized durable stainless-steel wedge wire technology for effective sludge dewatering and drying.

Gravity Flow Systems is best known for its Wedgewater filter products, which have become a reliable solution for industries seeking sustainable and low-energy methods of managing wastewater and sludge.

By focusing on simple yet powerful natural principles, the company has helped customers reduce costs, improve efficiency, and support environmental stewardship.

Today, Gravity Flow Systems continues to serve a wide range of industries with customized solutions that meet evolving demands in water purification and waste management.

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7. Voss technologies

Voss Technologies is a leading name among water purification companies specializing in groundwater sampling products.

As a certified woman-owned small business, Voss is dedicated to designing, developing, and marketing solutions that simplify the sampling process while ensuring high product quality at competitive costs.

The company’s products help environmental engineers save time and reduce expenses by eliminating cross-contamination risks and minimizing exposure to harmful solvents typically used during decontamination.

This focus on safety and efficiency also helps clients avoid the capital costs associated with purchasing and maintaining reusable equipment.

Voss Technologies is best known for manufacturing the primary bailer that is trusted and used at more sites than any other bailer on the market.

With a strong commitment to innovation and customer satisfaction, Voss continues to support environmental professionals in achieving accurate, safe, and cost-effective groundwater sampling across various industries and projects.

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8. Floating Skimmers

Floating Skimmers USA is a family-owned and operated company recognized among water purification companies for its commitment to delivering top-quality water skimming solutions.

As the exclusive distributor of Dragonfly Pool and Oil Skimmer products across North, Central, and South America, the company proudly meets customer needs with reliable and innovative skimming technologies.

Floating Skimmers USA focuses on helping pool owners and industries maintain cleaner water by removing contaminants and debris from the water’s surface before they sink and cause further issues.

The Dragonfly Floating Pool Cleaner was born out of this need—offering an effective, easy-to-use solution for keeping pool water crystal clear.

With a dedication to customer service and product excellence, Floating Skimmers USA ensures that clients searching for dependable water skimming products can count on the Dragonfly family to deliver outstanding results for pools, oil recovery, and other surface water applications.

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9. WesTech Engineering, Inc.

WesTech Engineering, Inc. is a trusted name among leading water purification companies, delivering comprehensive solutions for water and wastewater treatment, liquid/solid separation, and biological treatment to municipal, industrial, and mineral markets worldwide.

Founded in 1973 and headquartered in Salt Lake City, Utah, WesTech is a worker-owned company with over 500 employees dedicated to providing high-quality, reliable technologies that meet complex water management challenges.

The company’s innovative systems support cleaner water, environmental sustainability, and operational efficiency across a wide range of industries.

WesTech’s global presence includes multiple offices across the U.S. and around the world, enabling it to serve customers with localized expertise and responsive service.

Known for its commitment to engineering excellence and customer trust, WesTech continues to help communities and industries achieve effective water purification, compliance, and long-term resource stewardship through its advanced solutions.

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10- HILLIARD corporation

Hilliard Corporation, established in 1905, is a respected leader among water purification companies and motion control specialists.

For well over a century, Hilliard has been engineering, manufacturing, and distributing high-quality motion control and filtration products designed to meet the demands of diverse industries.

Known for its extensive experience, deep application knowledge, and commitment to strict quality standards, Hilliard is a trusted supplier to companies across the globe.

Its broad product portfolio is highly adaptable, with solutions that can be customized to support new and evolving applications in water purification, industrial processing, and more.

As an ISO 9001:2015-certified company, Hilliard guarantees products that meet rigorous quality expectations while delivering reliable performance.

With a focus on innovation and customer satisfaction, Hilliard continues to provide the solutions industries need to ensure efficient, clean, and safe operations in today’s competitive market.

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11- FLUIDYNE corporation

Fluidyne is a globally acclaimed leader among water purification companies, specializing in advanced wastewater treatment solutions.

With over 30 years of expertise, Fluidyne has pioneered technologies that have transformed the industry and set new standards for efficiency and reliability.

The company is credited with the development of innovative products such as ISAM, SAM, SBR, Jet MCR oxidation ditch, Hydro-Grit grit vortex separation, and FFP material filtration technology.

These systems are designed to provide effective, sustainable, and cost-efficient treatment for municipal and industrial wastewater applications.

With hundreds of successful installations worldwide, Fluidyne’s equipment and technologies are trusted to deliver superior performance in protecting water resources and supporting environmental sustainability.

Renowned for engineering excellence and dependable service, Fluidyne continues to play a vital role in helping communities and industries meet the growing demands of wastewater treatment and clean water management across the globe.

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12. Brentwood Water & Wastewater

Brentwood Water & Wastewater is a trusted name among water purification companies, offering robust and cost-effective solutions tailored to the diverse needs of the drinking water and wastewater treatment industries.

With decades of experience and deep application expertise, Brentwood has become a valuable resource for utilities and engineers worldwide.

The company is known for developing proprietary plastic sheet media and media supports for trickling filters, as well as affordable tube settlers designed to improve sedimentation efficiency.

Brentwood also supplies innovative media for IFAS systems and clog-resistant vacuum systems for effective sludge removal.

Additionally, Brentwood’s Polychem brand stands out as the global leader in 100% non-metallic chain and flight scrapers used in square clarifier systems, ensuring reliable performance and long service life.

Through these advanced technologies, Brentwood helps communities and industries achieve cleaner water, operational efficiency, and sustainable water management.

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How to Select the Right Water Purification Company

Choosing the right water purification company is essential to ensure you get clean, safe, and reliable water for your home or business. Here are key factors to consider:

1. Assess Your Water Quality Needs: Start by testing your water to identify specific contaminants such as chlorine, lead, bacteria, or heavy metals. Knowing what you need to filter will help narrow down the right solutions.

2. Check the Company’s Experience and Reputation: Look for companies with proven experience and positive customer reviews. Established companies often provide better service, warranties, and support.

3. Evaluate the Technology Offered: Make sure the company uses certified and up-to-date technologies like reverse osmosis, UV purification, or carbon filtration, depending on your water quality needs.

4. Look for Certification and Compliance: Choose a company whose systems are certified by recognized bodies like NSF, WQA, or EPA to ensure they meet safety and performance standards.

5. Review Costs and Maintenance Plans: Compare installation costs, ongoing maintenance fees, and filter replacement schedules. A good company offers transparent pricing and reliable after-sales support.

6. Customer Support and Warranty: Ensure the company provides accessible customer service, clear warranty policies, and assistance when needed.

Conclusion

Water purification companies in the U.S. play a vital role in ensuring access to clean, safe drinking water amid rising concerns over contamination.

With pollutants from agriculture, industry, and aging infrastructure affecting water quality, these companies provide advanced solutions to protect public health and the environment.

From homes to businesses, their systems help eliminate harmful substances and improve water taste, safety, and reliability.

As the demand for clean water grows, these companies are essential partners in promoting sustainable living and safeguarding future generations.

Investing in water purification is not just a choice—it’s a necessity for a healthier and safer life.

FAQs

What do water purification companies do?

Water purification companies specialize in removing harmful contaminants from water, including chemicals, heavy metals, bacteria, and viruses. They provide purification systems and services for homes, businesses, and public facilities to ensure safe and clean water.

What types of water purification technologies are commonly used?

Common technologies include reverse osmosis, UV disinfection, activated carbon filtration, ion exchange, and sediment filtration. Each method targets different contaminants to improve overall water quality.

How do I know if I need a water purification system?

If your tap water has an unusual taste, odor, or color—or if testing reveals the presence of contaminants like lead, chlorine, or bacteria—you may benefit from a purification system. Many companies offer water testing services to help you decide.

Are water purification systems expensive to maintain?

Maintenance costs vary depending on the system type and usage. Most require regular filter replacements and occasional servicing, which are typically affordable and essential for long-term performance.

Can water purification systems help with hard water issues?

Yes, some systems, like water softeners and ion exchange units, are specifically designed to remove minerals like calcium and magnesium that cause hard water, protecting plumbing and appliances.