Degremont designs, builds, and operates water treatment plants worldwide to purify water and treat wastewater. The company has operations in more than 70 countries, and its plants provide more than 1 billion people with potable water. It is a specialist in designing and constructing facilities for seawater desalination by the means of reverse osmosis. It also designs and builds sludge treatment facilities. In the US the group operates through subsidiary Infilco Degremont. United Water formed a joint venture with Infilco Degrement in 2009 to operate a Water Environmental Research Center in Richmond,Virginia.

American Transmission Company is an entrepreneur in the US power grid business. Connecting electricity producers to distributors, American Transmission owns, operates, monitors, and maintains 9,400 miles of high-voltage electric transmission lines and 510 substations in portions of Illinois, Michigan, Minnesota, and Wisconsin. American Transmission is one of the first for-profit transmission companies, formed when the US market deregulated in the early 2000s. The company operates the former transmission assets of some of its shareholders. About 30 utilities, municipalities, municipal electric companies, and electric cooperatives in its service area have an ownership stake in American Transmission.

Electricity, natural gas, and propane are the right energy mix to keep the customers of Florida Public Utilities happy. Florida Public Utilities Company serves more than 51,530 natural gas, 31,030 electricity, and more than 1,640 propane customers in southern, central, northwestern, and northeastern Florida. Florida Public Utilities buys its natural gas supply directly from marketers and producers and its electricity supply from nearby generating utilities; propane is purchased from wholesale suppliers. In 2009 Chesapeake Utilities acquired the company in a move that made Chesapeake Utilities a national player, and boosted the customer base of the combined companies to 200,000 in the Florida and Mid-Atlantic markets.

Steril-Aire lets you breathe easy. The company's products use ultraviolet "C" wavelength (UVC) energy to destroy molds and infectious diseases in HVAC systems. Steril-Aire makes and markets a wide range of UVC devices and accessories for commercial, residential, school, food processing, health care, and industrial applications. The company has an extensive portfolio of patents covering many aspects of UVC germicidal technology. Some products are designed for outdoor installation, and are water resistant. All others are designed for 99% relative humidity and function properly under those conditions.

San Diego Gas & Electric (SDG&E) digs doling out energy in sandy Southern California. The company is a regulated utility that serves 1.4 million electricity customers and more than 840,000 natural gas customers in San Diego County and a portion of southern Orange County. The electric utility segment owns about 22,200 miles of power distribution lines, which serve about 25 communities; its 1,870 miles of transmission lines are managed by the California Independent System Operator. SDG&E also has limited power generation operations (it owns or contracts more than 5,500 MW of generating capacity). The gas utility operates almost 170 miles of transmission pipelines and about 8,420 miles of distribution mains.

Bristol Water Group, one of the largest independent water suppliers in the UK. Through primary operating subsidiary Bristol Water plc, the group supplies water to about 500,800 customers, representing a population of more than 1.1 million. Bristol Water maintains about 6,600 km. of mains in a service territory that encompasses some 2,400 sq. km., and includes Bristol, Somerset, Gloucestershire, and Wiltshire. The group has completed its disposal of its nonregulated operations and is focusing on its core regulated water business.

Pennon Group Plc South West Water subsidiary provides water and wastewater services to more than 1.6 million people (more during the summer tourism season) in England's South West region, including Devon, Cornwall, and parts of Dorset and Somerset. South West Water's Echo South West unit contracts to run customer service operations for utilities. Pennon subsidiary Viridor Waste -- one of the largest waste management businesses in the UK -- offers solid waste collection, landfill disposal, and recycling and other services.

California Water Service Group, through its subsidiaries, provides water utility and other related services in California, Washington, New Mexico, and Hawaii. It engages 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. The company also provides non-regulated water-related services, including the operation of water and recycled water systems; leasing communication antenna sites on its properties; meter reading and billing services; sewer and refuse billing services; lab services for water quality testing; selling surplus property; and the marketing and billing of third party insurance programs to residential customers. As of December 31, 2009, it served approximately 467,100 customers in 83 communities in California; 15,600 customers in the Tacoma and Olympia areas in Washington; 7,800 water and wastewater customers in the Belen, Los Lunas, and Elephant Butte areas in New Mexico; and 4,200 water and wastewater customers on the islands of Maui and Hawaii. The company was founded in 1926 and is headquartered in San Jose, California.

Community Energy is working to create greener communities in the northeastern and midwestern US. Through supply agreements with alternative energy generation companies and sales agreements with electricity distribution utilities, Community Energy, a unit of industry leader IDERBROLA RENEWABLES, offers green energy solutions to major businesses and governments as well as to more than 110,000 residential and small-business customers. The company is also involved in the development of wind farms and supplies power directly to end-users. Community Energy, which operates under the NewWind Energy brand, purchases power primarily from wind-powered generation facilities; it also markets solar and hydroelectric energy.

The Laclede Group, Inc. operates as a public utility holding company. The company’s principal subsidiary, Laclede Gas Company, provides natural gas service to approximately 630,000 residential, commercial, and industrial customers in metropolitan St. Louis and surrounding counties in eastern Missouri. Its primary non-regulated subsidiary, Laclede Energy Resources, Inc., markets natural gas and related services to on-system utility transportation customers and customers outside of its utility’s traditional service area. The Laclede Group company was founded in 1857 and is based in St. Louis, Missouri.

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