Connecticut Water Service, Inc., through its subsidiaries, operates as a regulated water company in Connecticut. It operates in three segments: Water Activities, Real Estate Transactions, and Services and Rentals. The Water Activities segment supplies drinking water. The Real Estate Transactions segment involves in the sale or donation of its real estate holdings. The Services and Rentals segment provides contracted services to water and wastewater utilities and other clients, which include contract operations of water and wastewater facilities; Linebacker, an optional service line protection program that comprises repairing or replacing leaking or broken water service line, curb box, curb box cover, meter pit, meter pit cover, meter pit valve, and in-home water main shut off valve before the meter; and providing bulk deliveries of emergency drinking water to businesses and residences through tanker trucks. This segment also engages in leasing and renting residential and commercial properties. As of December 31, 2009, Connecticut Water Service, Inc. served 88,534 customers in 54 towns in Connecticut. The company was founded in 1956 and is headquartered in Clinton, Connecticut.

Yorkshire Water provides water and wastewater services to about 1.9 million households (4.8 million people) and approximately 130,000 business customers. The company operates more than 700 water and sewage treatment works and 120 reservoirs and supplies more than 1.3 billion liters of drinking water per day to homes and businesses in Yorkshire. Yorkshire Water also collects, treats, and disposes of about 1 billion liters of wastewater. The group has given its tap water the trade mark Icytonic, and it is the only water company in the UK to register its core product. Yorkshire Water is the primary subsidiary of Kelda Group.

Northwest Natural Gas Company stores and distributes natural gas in Oregon, Washington, and California. The company operates in two segments, Local Gas Distribution and Gas Storage. The Local Gas Distribution segment distributes natural gas in Oregon and southwest Washington. This segment engages in building and maintaining pipeline distribution system, purchasing gas from producers and marketers, contracting for the transportation of gas over pipelines from the supply basins to service territory, and reselling the gas to customers. It also transports gas owned by customers from the interstate pipeline connection, or city gate, to the customers’ facilities. This segment serves various industries, including pulp, paper, and other forest products; companies manufacturing electronic, electrochemical, and electrometallurgical products; companies engaged in processing of farm and food products; metal fabrication and casting companies; organizations that produce various mineral products, machine tools, machinery, and textiles; companies that manufacture asphalt, concrete, and rubber; printing and publishing companies; nurseries; government and educational institutions; and electric generation companies. As of December 31, 2009, it served approximately 668,000 total utility customers comprising approximately 605,000 residential, 62,000 commercial, and 1,000 industrial sales and transportation customers. The Gas Storage segment offers underground natural gas storage services to interstate and intrastate customers in the Pacific Northwest. It holds interests in approximately 8,500 net acres of underground natural gas storage in Oregon and approximately 1,900 net acres of underground natural gas storage in California; and interests in approximately 1,600 net acres of oil and gas leases in Oregon. This segment serves primarily natural gas distribution, electric generation, and energy marketing companies. Northwest Natural Gas Company was founded in 1910 and is headquartered in Portland, Oregon.

Environmental Waste Controls (EWC) slows down the fill-up of UK landfills. The company leases and sells waste-compactor equipment and provides maintenance services for the compactors. It also collects, transports, and recycles or disposes of waste for its 400-plus public- and private-sector customers, which include manufacturing and retail companies, food processors, hotels (such as Hilton and Radisson Hotels), railway stations, National Health Service Trusts, and local governments. The company was the subject of a management buyout in 2004. EWC was founded in 1993.

Public Utility District No. 2 of Grant County, Washington, probably used up its initial budget before it could hire a team of branding and identity consultants. But a dour name does not stop the power provider (commonly referred to as Grant County PUD) from operating two hydroelectric power plants on the Columbia River (2,000 MW of generating capacity) and distributing electricity to the 40,000 residents of Washington's Grant County. The district, which was formed in 1938 and went into operation in 1942, also sells power to twelve Pacific Northwest utilities and is developing a residential fiber-optic data network.

Utilities' formula for success is H-2-O. As one of the largest privately owned water and wastewater companies in the US, Utilities owns about 90 subsidiaries that operate more than 500 systems in 15 states, mainly east of the Mississippi. The company serves more than 300,000 customers. About half of the company's revenues come from water services and the other half from wastewater services; residential customers account for approximately 90% of sales. Utilities also provides reuse water for irrigation purposes and for golf courses and car washes. Expanding its coverage, in 2009 the company acquired the sewer collection system assets of Sewerage District No. 6 in Louisiana.

Marsulex is scrubbing up smokestacks in North America. The company provides outsourced air-quality regulation compliance services to the oil refinery and power generation industries. Among Marsulex's emission-control products are spent acid regeneration and sulphate scrubbing systems; the firm also processes and sells sulphur by-products. Customers in Marsulex's oil-refinery segment include Shell, Petro-Canada, BP, and Sunoco. The company provides services to power-generation customers worldwide. Marsulex operates seven plants in Canada and ten in the US, including one in Southern California. In 2009 investment firm Harrowston Holding acquired control of Marsulex.

Environmental, Safety & Health, Inc. (ES&H) will follow through. Serving US companies and government agencies, ES&H provides training and services for safety, health, environmental, and regulatory concerns. The company also offers general contractor services for construction, demolition, and remediation projects. Clients include corporations like Schering-Plough and Alcoa, as well as districts or regional divisions of government agencies like the FAA and US Army Corps of Engineers. Founded in 1997, ES&H is based in Tennessee and operates offices in Delaware and Louisiana.

Through its regulated utility subsidiaries, Aquarion distributes water to more than 180,000 homes and businesses (or about 580,000 people) in some 39 communities in Connecticut, Massachusetts, and New Hampshire. It is one of the 10 largest investor-owned utilities in the US. The company's Aquarion Services unit provides contract management of municipal water and wastewater systems, along with engineering and management consulting services and consumer water line protection plans. In 2007 UK-based Kelda Group sold control of Aquarion to Australia's Macquarie Bank for $860 million.

Centrais Eletricas Brasileiras S.A. – Eletrobras primarily engages in the generation, distribution, transmission, and commercialization of electric power; and construction and operation of nuclear power plants in Brazil. The company also assists Brazil's Ministry of Mining and Energy in designing the country's policy for the energy sector; provides guarantees and acquires debentures of companies and holders of public electric power services; grants loans and guarantees for technical and scientific research institutions; promotes and supports research in the power sector in connection with the generation, transmission, and distribution of electric power, as well as studies involving the exploitation of watershed for various purposes; contributes to the education of technical staff and qualified workers required by the Brazilian electric power sector through specialized training programs or assists national educational institutions or provides scholarships or signs agreements with foreign institutions that promote the development of specialized technical personnel; and co- operates technically and administratively with companies in which it holds interests, and with the agency of the Ministry of Mining and Energy. In addition, it manages incentive program for alternative sources of electric power, a program of the federal government that aims to enhance the diversification of the Brazilian energy model and search for regional solutions based on renewable electric power sources produced by independent agents. The company is headquartered in Rio de Janeiro, Brazil.

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