Middlesex Water Company owns and operates regulated water utility and wastewater systems. It operates in two segments, Regulated and Non-Regulated. 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.

SJW Group, through its subsidiaries, provides water utility services in the United States. It engages in the production, purchase, storage, purification, distribution, wholesale, and retail sale of water and wastewater services.

The York Water Company impounds, purifies, and distributes drinking water. It owns and operates three wastewater collection systems; five wastewater collection and treatment systems; and two reservoirs, including Lake Williams and Lake Redman, which hold approximately 2.2 billion gallons of water.

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.

California Water Service Group, through its subsidiaries, provides water utility and other related services in California, Washington, New Mexico, Hawaii, and Texas.

Global Water Resources, Inc., a water resource management company, owns, operates, and manages regulated water, wastewater, and recycled water utilities primarily in metropolitan Phoenix, Arizona.

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 3.4 million active customers.

Essential Utilities, Inc., through its subsidiaries, operates regulated utilities that provide water, wastewater, or natural gas services in the United States.

Consolidated Water Co. Ltd., together with its subsidiaries, designs, constructs, manages, and operates water production and water treatment plants primarily in the Cayman Islands, the Bahamas, and the United States.