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.

Essential Utilities, Inc., through its subsidiaries, operates regulated utilities that provide water, wastewater, or natural gas services in the United States. The company operates through Regulated Water and Regulated Natural Gas segments. It offers water services through operating and maintenance contract with municipal authorities and other parties. In addition, the company provides utility service line protection solutions and repair services to households. It serves approximately 5.5 million residential water, commercial water, fire protection, industrial water, wastewater, and other water and utility customers in Pennsylvania, Ohio, Texas, Illinois, North Carolina, New Jersey, Indiana, Virginia, and Kentucky under the Aqua and Peoples brands. The company was formerly known as Aqua America, Inc. and changed its name to Essential Utilities, Inc. in February 2020. Essential Utilities, Inc. was founded in 1886 and is headquartered in Bryn Mawr, Pennsylvania.

American States Water Company, through its subsidiaries, provides water and electric services to residential, commercial, industrial, and other customers in the United States. It operates through three segments: Water, Electric, and Contracted Services. The company purchases, produces, distributes, and sells water, as well as distributes electricity. As of December 31, 2022, American States Water Company provided water service to 263,265 customers located throughout 10 counties in the State of California; and distributed electricity to 24,705 customers in San Bernardino County mountain communities in California. The company also provides water and/or wastewater services, including the operation, maintenance, and construction of facilities at the water and/or wastewater systems at various military installations. American States Water Company was incorporated in 1929 and is headquartered in San Dimas, California.

Middlesex Water Company owns and operates regulated water utility and wastewater systems. It operates in Regulated and Non-Regulated segments. The Regulated segment collects, treats, and distributes water on a retail and wholesale basis to residential, commercial, industrial, and fire protection customers, as well as provides regulated wastewater systems in New Jersey and Delaware. The Non-Regulated segment provides non-regulated contract services for the operation and maintenance of municipal and private water and wastewater systems in New Jersey and Delaware. Middlesex Water Company was incorporated in 1896 and is headquartered in Iselin, New Jersey.

Artesian Resources Corporation, through its subsidiaries, provides water, wastewater, and other services in Delaware, Maryland, and Pennsylvania. The company distributes and sells water to residential, commercial, industrial, governmental, municipal, and utility customers, as well as for public and private fire protection in the states of Delaware, Maryland, and Pennsylvania; and offers wastewater collection, treatment infrastructure, and wastewater services to customers in Delaware. It also provides contract water and wastewater services; water, sewer, and internal service line protection plans; and wastewater management services, as well as design, construction, and engineering services. In addition, the company offers services to other water utilities, including operations and billing functions; owns real estate properties, including land for office buildings, a water treatment plant, and wastewater facility; and provides design, installation, maintenance, and repair services related to existing or proposed storm water management systems. As of December 31, 2023, it served approximately 95,900 customers in Delaware; 2,600 customers in Maryland; and 40 customers in Pennsylvania through 1,470 miles of transmission and distribution mains. Artesian Resources Corporation was founded in 1905 and is headquartered in Newark, Delaware.

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.

Equitrans Midstream Corporation owns, operates, acquires, and develops midstream assets in the Appalachian Basin. The company operates through Gathering, Transmission, and Water segments. It operates dry gas gathering systems of high-pressure gathering lines and FERC-regulated interstate pipelines and storage systems. In addition, the company operates water pipelines and other facilities that deliver fresh water from local municipal water authorities, the Monongahela River, the Ohio River, local reservoirs, and several regional waterways. Equitrans Midstream Corporation was incorporated in 2018 and is headquartered in Canonsburg, Pennsylvania.