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The Memphis Light, Gas and Water Division (MLGW) is a municipal public utility serving Memphis and Shelby County, Tennessee. ==Description== MLGW is the largest three-service municipal utility in the U.S. with more than 420,000 customers and is owned by the City of Memphis. Since 1939 the MLGW has provided electricity, natural gas, and water service for residents of Memphis and Shelby County. MLGW is supplied with electricity by the Tennessee Valley Authority (TVA), a federal agency that sells electricity on a nonprofit basis to its distributors. MLGW is TVA's largest customer, representing 11 percent of TVA's total load. There are over 428,000 electric customers.〔''(Fitch Affirms Memphis Light, Gas & Water's Electric System Sr. & Sub Revs 'AA'; Outlook Stable )''. Business Wire, January 23, 2007.〕 Natural gas is the most common means of residential heating in the MLGW service area. MLGW provides natural gas to more than 313,000 customers in Shelby County. While some utilities obtain drinking water from surface lakes or rivers, MLGW supplies water from the Memphis aquifer beneath Shelby County. It contains more than 100 trillion gallons of water that are more than 2,000 years old. MLGW operates one of the largest artesian well systems in the world consisting of 10 water pumping stations and more than 175 wells, delivering water to more than 253,000 customers.〔Lin, L. Y. ''(Drinking Water from Wells, Not From the River )''. Regional Perspectives in Environmental Science. January, 2000.〕〔Thomas, Donna. ''(The Memphis Aquifer )'' 2003.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Memphis Light, Gas and Water」の詳細全文を読む スポンサード リンク
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