With rising concerns for clean and safe water, the water treatment industry in Illinois makes a significant contribution towards achieving this imperative goal. The industry encompasses businesses that offer crucial services including filtration, purification, chlorination, and desalination of water. These companies utilize innovative technologies to treat water and wastewater, ensuring water quality for various residential, commercial, and industrial needs. Through state-of-the-art solutions, these companies help tackle water scarcity, while actively promoting conservation and recycling efforts. The industry is poised for growth with future advancements focusing on advanced filtration systems, IoT integration and energy-efficient operations.


Top 20 water treatment companies in Illinois

1. Marmon Holdings, Inc.

  • Website: marmon.com
  • Headquarters: Chicago, Illinois, United States
  • Founded: 1953
  • Headcount: 10001+
  • Latest funding type: Acquired
  • LinkedIn

Marmon Holdings, Inc. is a highly decentralized organization that combines expertise and innovation to solve the world's greatest needs. As a Berkshire Hathaway company, Marmon comprises 11 groups and over 100 autonomous businesses with a total annual revenue of $10 billion. With a global reach and local control, Marmon offers specialized solutions in industries such as water treatment, foodservice, technologies, retail, transportation, electrical, plumbing, refrigeration, metal services, and industrial products.


2. Veolia Water Technologies - North America

Veolia Water Technologies is a global company offering innovative wastewater and sludge treatment technologies. They help preserve water resources while maximizing energy production and recovering valuable by-products. Their solutions enable the extraction of raw materials and meet the circular economy goals. With a presence in multiple countries, they provide optimization services for water plants worldwide.


3. USABlueBook

USABlueBook is a company that provides products and services for professionals in the water and wastewater treatment industry. They offer a wide range of products including aeration, chemicals, filters, meters, and safety equipment.


4. PSG, a Dover company

  • Website: psgdover.com
  • Headquarters: Oakbrook Terrace, Illinois, United States
  • Founded: 2008
  • Headcount: 1001-5000
  • Latest funding type: Acquired
  • LinkedIn

PSG is a global company specializing in the safe, reliable, and efficient metering, dosing, treatment, and transfer of water and wastewater. With a focus on emerging technologies, PSG brands excel in the most demanding water and wastewater challenges.


5. Utilities Inc.

  • Website: uiwater.com
  • Headquarters: Chicago, Illinois, United States
  • Founded: 1965
  • Headcount: 501-1000
  • LinkedIn

Utilities, Inc. is a company that specializes in providing water and wastewater management services. They focus on delivering reliable services, optimal customer care, and exceptional value to communities. With their expertise in water management, they strive to conserve this essential resource through various measures.


6. Culligan By WaterCo

  • Website: culligan.com
  • Headquarters: Lombard, Illinois, United States
  • Founded: 2011
  • Headcount: 201-500
  • Latest funding type: Acquired
  • LinkedIn

Culligan Water is a provider of home and business water treatment systems. They offer a wide range of products and services to help improve water quality, including water softeners, water filtration systems, and drinking water solutions.


7. DRF Trusted Property Solutions

  • Website: drftps.com
  • Headquarters: Plainfield, Illinois, United States
  • Headcount: 51-200
  • LinkedIn

DRFTPS.com is a plumbing and water heating solutions company that offers services such as water filtration, water purification, water treatment, water heating repair, replacement, and installation. They provide efficient and reliable plumbing solutions to residential and commercial properties. With a focus on customer satisfaction, they have served over 569,345 customers across various locations.


8. Aqua-Aerobic Systems, Inc.

  • Website: aqua-aerobic.com
  • Headquarters: Loves Park, Illinois, United States
  • Founded: 1969
  • Headcount: 51-200
  • Latest funding type: Acquired
  • LinkedIn

Aqua-Aerobic Systems, Inc. is a leading company in the water and wastewater treatment industry, offering advanced solutions in aeration, mixing, biological processes, filtration, membranes, disinfection, and process control. With a focus on applied engineering, they serve both municipal and industrial customers, working collaboratively with consulting engineers and plant operators to design and manufacture the best treatment solutions with the lowest lifecycle cost.


9. Pure Water Technology - PHSI

  • Website: purewatertech.com
  • Headquarters: Lincolnshire, Illinois, United States
  • Founded: 1996
  • Headcount: 51-200
  • Latest funding type: Acquired
  • LinkedIn

Pure Water Technology is a leading provider of advanced water purification systems. They offer a range of products including water fill stations, specialty units, and touchless-dispense systems. Their state-of-the-art diagnostics ensure high-quality water, trusted by thousands of companies worldwide.


10. Culligan

  • Website: indianaculligan.com
  • Headquarters: Charleston, Illinois, United States
  • Headcount: 1001-5000

Culligan is a water treatment company providing residential and commercial water solutions, including water softeners, purification systems, and salt & water delivery.


11. StormTrap

  • Website: stormtrap.com
  • Headquarters: Romeoville, Illinois, United States
  • Founded: 2002
  • Headcount: 51-200
  • Latest funding type: Acquired
  • LinkedIn

StormTrap provides stormwater management and treatment solutions for various needs and projects. Their products include filtration systems, detention and infiltration systems, rainwater harvesting systems, and treatment trains. They aim to improve water quality by removing trash, sediments, hydrocarbons, and other pollutants from stormwater. With their experienced professionals, they offer customized designs, budget estimates, and installation specifications to meet project goals and navigate local regulations.


12. Aquion, Inc.

  • Website: aquion.com
  • Headquarters: Roselle, Illinois, United States
  • Founded: 1953
  • Headcount: 51-200
  • Latest funding type: Acquired
  • LinkedIn

Aquion is a company based in Elk Grove Village, IL that specializes in premium water treatment equipment and solutions.


13. Delta Pure Filtration String Wound, Melt Blown, and Carbon Filters

  • Website: deltapure.com
  • Headquarters: West Chicago, Illinois, United States
  • Founded: 1983
  • Headcount: 51-200
  • LinkedIn

Delta Pure Filtration is a US-based manufacturer of filter cartridges and systems for industrial, municipal, and commercial customers worldwide. They offer a wide variety of filters to meet various fluid purification needs, with their cartridges certified to NSF/ANSI 61. Delta Pure takes pride in being a reliable resource for their customers, ensuring quality products and excellent customer service.


14. Charger Water Treatment Products

Charger Water Treatment Products is a nationwide provider of water treatment solutions. They offer a comprehensive line of high-quality water treatment equipment and accessories, including water filtration systems, softeners, iron and H2S filters, and scale control solutions. Their products are designed for residential and commercial use, ensuring cleaner and healthier water. Charger Water focuses on delivering water quality excellence and works with professional dealers to improve access to quality water for customers.


15. WaterSurplus

WaterSurplus delivers sustainable water treatment solutions across industries and around the world. This includes engineering and design services, custom turn-key equipment solutions, NSF/ANSI 61 certified media filtration systems, a diverse mobile rental fleet, new OEM equipment, manufacturing, refurbishing, and services such as plant optimization and membrane cleaning.


16. Aqua Pure Enterprises Inc

Aquapure is a company that offers a range of water purification solutions and services. Their products include advanced filtration systems, water softeners, and reverse osmosis systems. Their services include installation, maintenance, and repair of water purification systems.


17. Rainsoft Water Treatment

RainSoft is a company that offers water treatment solutions for residential and commercial customers. They provide a range of products, including water filtration systems, water softeners, and air purification systems. With their innovative technology, RainSoft helps improve the quality of drinking water, reduce water stains, and eliminate impurities. Their systems are designed to solve various water problems, such as hard water, low water pressure, and unpleasant taste or odor. Through their dealership opportunities and dedicated customer care, RainSoft ensures customer satisfaction and a healthier living environment.


18. Performance Water Systems LLC

Performance Water Systems is a company specialized in water purification. They offer a wide range of equipment and services, including reverse osmosis systems, deionizers, and healthcare water quality testing. Their team of manufacturer-certified service technicians provides exceptional service and installation. They also offer training programs to improve customer operations. Performance Water Systems aims to earn the trust and loyalty of their customers through superior equipment and personalized service.


19. Pristine Water Solutions Inc.

Pristine Water Solutions is a company providing water treatment solutions to both consumers and businesses. They offer a variety of products and services to ensure clean and safe drinking water.


20. Garrelts Water Treatment, INC.

Garrelts Water provides water treatment solutions for Illinois residents and businesses with a focus on water softening and filtration. They offer products such as reverse osmosis systems and iron filters, and provide financing options.


Want to find more water treatment companies?


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...and a lot more!