Xylem Inc., together with its subsidiaries, engages in the design, manufacture, and servicing of engineered products and solutions worldwide. It operates through four segments: Water Infrastructure, Applied Water, Measurement & Control Solutions, and Integrated Solutions and Services. The Water Infrastructure segment offers products, including water, storm water, and wastewater pumps; controls and systems; filtration, disinfection, and biological treatment equipment; and mobile dewatering equipment and rental services under the ADI, Flygt, Godwin, Sanitaire, Magneto, Neptune Benson, Ionpure, Leopold, Wedeco, and Xylem Vue brands. The Applied Water segment provides pumps, valves, heat exchangers, controls, and dispensing equipment systems under the Goulds Water Technology, Bell & Gossett, A-C Fire Pump, Standard Xchange, Lowara, Jabsco, Xylem Vue, and Flojet brands. The Measurement & Control Solutions segment offers smart meters, networked communication devices, data analytics, test equipment, controls, sensor devices, software and managed services, and critical infrastructure services; and software and services, including cloud-based analytics, remote monitoring and data management, leak detection, condition assessment, asset management, and pressure monitoring solutions, as well as testing equipment. This segment sells its products under the Pure Technologies, Sensus, Smith Blair, WTW, Xylem Vue, and YSI brands. The Integrated Solutions and Services segment provides maintenance services, mobile services, digital outsourced solutions, wastewater systems, environmental remediation, odor and corrosion control, filtration, reverse osmosis, ion exchange, and deionization under Aquapro, WaterOne, and Ion Pure brands. Xylem Inc. was formerly known as ITT WCO, Inc. and changed its name to Xylem Inc. in May 2011. Xylem Inc. was incorporated in 2011 and is headquartered in Washington, District of Columbia.

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.

Pentair plc provides various water solutions in the United States, Western Europe, China, Eastern Europe, Latin America, the Middle East, Southeast Asia, Australia, Canada, and Japan. The company operates through three segments: Flow, Water Solutions, and Pool. The Flow segment designs, manufactures, and sells fluid treatment and pump products and systems, including pressure vessels, gas recovery solutions, membrane bioreactors, wastewater reuse systems and advanced membrane filtration, separation systems, water disposal pumps, water supply pumps, fluid transfer pumps, turbine pumps, solid handling pumps, and agricultural spray nozzles for fluid delivery, ion exchange, desalination, food and beverage, separation technologies in the oil and gas industry, residential and municipal wells, water treatment, wastewater solids handling, pressure boosting, circulation and transfer, fire suppression, flood control, agricultural irrigation, and crop spray in residential, commercial, and industrial markets. The Water Solutions segment provides commercial and residential water treatment products and systems, including pressure tanks, control valves, activated carbon products, commercial ice machines, conventional filtration products, and point-of-entry and point-of-use water treatment systems, as well as installation and preventative services for use in residential whole home water filtration, drinking water filtration, and water softening solutions, as well as commercial total water management and filtration in foodservice operations. The Pool segment provides residential and commercial pool equipment and accessories comprising pumps, filters, heaters, lights, automatic controls, automatic cleaners, maintenance equipment, and pool accessories for applications in residential and commercial pool maintenance, pool repair, renovation, service, and construction and aquaculture solutions. Pentair plc was founded in 1966 and is headquartered in London, the United Kingdom.

Watts Water Technologies, Inc., together with its subsidiaries, supplies products and solutions that manage and conserve the flow of fluids and energy into, through, and out of buildings in the commercial, industrial, and residential markets in the Americas, Europe, the Asia-Pacific, the Middle East, and Africa. The company offers residential and commercial flow control and protection products, including backflow preventers, water pressure regulators, temperature and pressure relief valves, thermostatic mixing valves, leak detection and protection products, commercial washroom solutions, and emergency safety products and equipment for plumbing and hot water applications. It also provides heating, ventilation, and air conditioning and gas products comprising commercial boilers; water heaters and heating solutions; hydronic and electric heating systems for under-floor radiant applications; custom heat and hot water solutions; hydronic pump groups for boiler manufacturers and alternative energy control packages; and flexible stainless-steel connectors for natural and liquid propane gas in commercial food service and residential applications. In addition, the company offers drainage and water re-use products, such as drainage products, engineered rainwater harvesting solutions for commercial, industrial, marine, and residential applications; connected roof drain systems; and water quality products that include point-of-use and point-of-entry water filtration, conditioning, and scale prevention systems for commercial, marine, and residential applications. The company sells its products to plumbing, heating, and mechanical wholesale distributors and dealers; original equipment manufacturers; specialty product distributors; and do-it-yourself and retail chains, as well as wholesalers and private label accounts. Watts Water Technologies, Inc. was founded in 1874 and is headquartered in North Andover, Massachusetts.

California Water Service Group, through its subsidiaries, provides water utility and other related services in California, Washington, New Mexico, Hawaii, and Texas. The company is involved in the production, purchase, storage, treatment, testing, distribution, and sale of water for domestic, industrial, public, and irrigation uses, as well as for fire protection services. It offers its services to approximately 497,700 customer connections in 100 California communities; approximately 6,500 water and wastewater customer connections on the islands of Maui, Oahu, and Hawaii; approximately 38,000 customer connections in the Tacoma, Olympia, Graham, Spanaway, Puyallup, Rainier, Yelm, and Gig Harbor areas; and approximately 11,400 water and wastewater customer connections in Rio Communities, Rio Del Oro, Meadow Lake, Indian Hills, Squaw Valley, Elephant Butte, Morningstar, Sandia Knolls, Juan Tomas, and Cypress Gardens systems. The company also engages in the provision of non-regulated water-related services, including operating of municipally owned water systems, privately owned water, and recycled water distribution systems; water system operation, meter reading, and billing services to private companies and municipalities; leasing of communication antenna sites on its properties; and billing of optional third-party insurance programs to its residential customers. In addition, it provides lab, wastewater collection, and treatment services. California Water Service Group was founded in 1926 and is headquartered in San Jose, California.

Select Water Solutions, Inc., together with its subsidiaries, provides water management and chemical solutions to the energy industry in the United States. The company operates through three segments: Water Services, Water Infrastructure, and Chemical Technologies. The Water Services segment provides water-related services, including water sourcing, water transfer, flowback and well testing, water containment, fluids hauling, water monitoring, and water network automation; technology solutions comprising hydrographic mapping, water volume and quality monitoring, remote pit and tank monitoring, leak detection, asset and fuel tracking, and automated-equipment services, as well as various surface rental equipment and workforce accommodation services. The Water Infrastructure segment engages in the recycling, gathering, transferring, and disposal of water through a network of permanent pipeline infrastructure, semi-permanent pipeline infrastructure, water recycling facilities, earthen pits, water sources, and SWDs; provides solids management services; and develops, builds, and operates semi-permanent and permanent infrastructure solutions. The Chemical Technologies segment provides technical solutions, products, and services related to chemical applications in the oil and gas industry. This segment develops, manufactures, and manages logistics; and provides chemicals used in hydraulic fracturing, stimulation, cementing, and well completions for pressure pumpers and oil and gas producers, as well as offers production chemical solutions for underperforming wells, corrosion and scale monitoring, chemical inventory management, well failure analysis, and lab services. It primarily serves oil and gas producers. The company was formerly known as Select Energy Services, Inc. and changed its name to Select Water Solutions, Inc. in May 2023. Select Water Solutions, Inc. was incorporated in 2016 and is headquartered in Houston, Texas.

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.

Cadiz Inc., together with its subsidiaries, provides water solutions in the United States. The company operates through Land and Water Resources; and Water Filtration Technology segments. It offers water supply, water storage, water conveyance, and water filtration services. In addition, the company is involved in the cultivation of grain crops and alfalfa, as well as provides water filtration solutions for impaired or contaminated groundwater sources. It serves public water systems, government agencies, and other clients. Cadiz Inc. was founded in 1983 and is based in Los Angeles, California.