Ecolab Inc. provides water, hygiene, and infection prevention solutions and services in the United States and internationally. The company operates through three segments: Global Industrial; Global Institutional & Specialty; and Global Healthcare & Life Sciences. The Global Industrial segment offers water treatment and process applications, and cleaning and sanitizing solutions to manufacturing, food and beverage processing, transportation, chemical, metals and mining, power generation, pulp and paper, commercial laundry, petroleum, refining, and petrochemical industries. Its Global Institutional & Specialty segment provides specialized cleaning and sanitizing products to the foodservice, hospitality, lodging, government and education, and retail industries. The Global Healthcare & Life Sciences segment offers specialized cleaning and sanitizing products to the healthcare, personal care, and pharmaceutical industries, such as infection prevention and surgical solutions, and end-to-end cleaning and contamination control solutions under the Ecolab, Microtek, and Anios brand names. In addition, the company provides pest elimination services to detect, eliminate, and prevent pests, such as rodents and insects in restaurants, food and beverage processors, hotels, grocery operations, and other commercial segments including education, life sciences, and healthcare customers. Further, it offers colloidal silica for binding and polishing applications in semiconductor, catalyst, and aerospace component manufacturing, as well as chemical industries; and products and services that manage wash process through custom designed programs, premium products, dispensing equipment, water and energy management, and reduction, as well as real time data management. It sells its products through field sales and corporate account personnel, distributors, and dealers. Ecolab Inc. was founded in 1923 and is headquartered in Saint Paul, Minnesota.

American Water Works Company, Inc., through its subsidiaries, provides water and wastewater services in the United States. It offers water and wastewater services to approximately 1,700 communities in 14 states serving approximately 3.5 million active customers. The company serves residential customers; commercial customers, including food and beverage providers, commercial property developers and proprietors, and energy suppliers; fire service and private fire customers; industrial customers, such as large-scale manufacturers, mining, and production operations; public authorities comprising government buildings and other public sector facilities, such as schools and universities; and other utilities and community water and wastewater systems. It also provides water and wastewater services on military installations; and undertakes contracts with municipal customers, primarily to operate and manage water and wastewater facilities, as well as offers other related services. In addition, the company operates approximately 80 surface water treatment plants; 540 groundwater treatment plants; 175 wastewater treatment plants; 53,700 miles of transmission, distribution, and collection mains and pipes; 1,200 groundwater wells; 1,700 water and wastewater pumping stations; 1,100 treated water storage facilities; and 74 dams. The company was founded in 1886 and is headquartered in Camden, New Jersey.

Fresenius Medical Care AG provides dialysis and related services for individuals with renal diseases in Germany, North America, and internationally. The company offers dialysis treatment and related laboratory and diagnostic services through a network of outpatient dialysis clinics; materials, training, and patient support services comprising clinical monitoring, follow-up assistance, and arranging for delivery of the supplies to the patient's residence; and dialysis services under contract to hospitals in the United States for the hospitalized end-stage renal disease (ESRD) patients and for patients suffering from acute kidney failure. It also develops, manufactures, and distributes various health care products, including polysulfone dialyzers, hemodialysis machines, peritoneal dialysis cyclers, peritoneal dialysis solutions, hemodialysis concentrates, solutions and granulates, bloodlines, renal pharmaceuticals, systems for water treatment, and acute cardiopulmonary and apheresis products. In addition, the company develops, acquires, and in-licenses renal pharmaceuticals; offers renal medications and supplies to patients at homes or to dialysis clinics; and provides vascular, cardiovascular, endovascular specialty, vascular care ambulatory surgery center, and physician nephrology and cardiology services. The company sells its products to dialysis clinics, hospitals, and specialized treatment clinics directly, as well as through local sales forces, independent distributors, dealers, and sales agents. Fresenius Medical Care AG was incorporated in 1996 and is headquartered in Bad Homburg, Germany.

CorMedix Inc., a biopharmaceutical company, focuses on developing and commercializing therapeutic products for the prevention and treatment of infectious and inflammatory diseases in the United States. Its lead product candidate is DefenCath, an antimicrobial catheter lock solution to reduce the incidence of catheter-related bloodstream infections in adult patients with kidney failure. The company was formerly known as Picton Holding Company, Inc. and changed its name to CorMedix, Inc. in January 2007. CorMedix Inc. was incorporated in 2006 and is based in Berkeley Heights, New Jersey.

Pure Cycle Corporation provides wholesale water and wastewater services in the United States. It operates in two segments, Wholesale Water and Wastewater Services; and Land Development. The company engages in the wholesale water production, storage, treatment, and distribution systems; wastewater collection and treatment systems; development of master-planned community; and construction and leasing of single-family homes. It serves domestic, commercial, and industrial customers. The company was incorporated in 1976 and is based in Watkins, Colorado.

Cytosorbents Corporation engages in the research, development, and commercialization of medical devices with its blood purification technology platform incorporating a proprietary adsorbent and porous polymer technology in the United States, Germany, and internationally. Its flagship product is CytoSorb, an extracorporeal cytokine adsorber for adjunctive therapy in the treatment of sepsis, adjunctive therapy in other critical care applications, prevention, and treatment of perioperative complications, and maintaining or enhancing the quality of solid organs harvested from donors for organ transplant; and offers VetResQ, a device for adjunctive therapy in the treatment of sepsis, pancreatitis, and other critical illnesses in animals. The company also develops CytoSorb-XL, a device for adjunctive therapy in the treatment of sepsis and other critical illnesses; HemoDefend blood purification technology platform to reduce contaminants in the blood supply that can cause transfusion reactions or disease when administering blood and blood products to patients, and removal of anti-A and anti-B blood group antibodies from whole blood and plasma; K+ontrol for treatment of severe hyperkalemia in patients with life-threatening conditions; and ContrastSorb for the removal of IV contrast in blood administered during CT imaging, an angiogram, or during a vascular interventional radiology procedure to reduce the risk of contrast-induced nephropathy. In addition, it develops BetaSorb, a device for the prevention and treatment of health complications caused by the accumulation of metabolic toxins in patients with chronic renal failure; DrugSorb, a device to remove drugs and chemicals from the blood; and DrugSorb-ATR, an antithrombotic removal system. The company was formerly known as MedaSorb Technologies Corporation and changed its name to Cytosorbents Corporation in May 2010. Cytosorbents Corporation was founded in 1997 and is headquartered in Princeton, New Jersey.

NanoVibronix, Inc., through its subsidiary, NanoVibronix Ltd., focuses on the non-invasive biological response-activating devices that target biofilm prevention, wound healing, and pain therapy in the United States, Israel, Europe, Australia, India, and internationally. The company's product portfolio includes UroShield, an ultrasound-based product to prevent bacterial colonization and biofilm in urinary catheters, enhance antibiotic efficacy, and decrease pain and discomfort associated with urinary catheter use. It also offers PainShield, a patch-based therapeutic ultrasound technology to treat pain, muscle spasm, and joint contractures; and WoundShield, a patch-based therapeutic ultrasound device intended to facilitate tissue regeneration and wound healing by using ultrasound to increase local capillary perfusion and tissue oxygenation. It sells its products directly to patients, as well as through distributor agreements. The company was incorporated in 2003 and is headquartered in Tyler, Texas.

Nuwellis, Inc., a medical device company, develops, manufactures, and commercializes medical devices used in ultrafiltration therapy. The company offers Aquadex FlexFlow and Aquadex SmartFlow systems, which are used to treat patients suffering from fluid overload due to heart failure. Its Aquadex FlexFlow system includes a console, disposable blood circuit set, and disposable catheter. The company sells its products to hospitals and clinics through its direct salesforce in the United States; and through independent specialty distributors in Austria, Belarus, Brazil, Colombia, the Czech Republic, Germany, Greece, Hong Kong, India, Israel, Italy, Panama, Romania, Singapore, Slovakia, Spain, Switzerland, Thailand, the United Arab Emirates, and the United Kingdom. The company was formerly known as CHF Solutions, Inc. and changed its name to Nuwellis, Inc. in April 2021. Nuwellis, Inc. was founded in 1999 and is headquartered in Eden Prairie, Minnesota.