<P> Louisville has historically been a major center for railway traffic . The Louisville and Nashville Railroad was once headquartered here, before it was purchased by CSX Transportation . Today the city is served by two major freight railroads, CSX (with a major classification yard in the southern part of the metro area) and Norfolk Southern . Five major main lines connect Louisville to the rest of the region . Two regional railroads, the Paducah and Louisville Railway and the Louisville and Indiana Railroad, also serve the city . With the discontinuance of the stop in Louisville in 2003 for a more northerly route between New York and Chicago, the Kentucky Cardinal no longer serves the city; it is thus the fifth largest city in the country with no passenger rail service . </P> <P> In 2016 Walk Score ranked Louisville 43rd "most walkable" of 141 U.S. cities with a population greater than 200,000 . </P> <P> Electricity is provided to the Louisville Metro area by Louisville Gas & Electric . Water is provided by the Louisville Water Company, which provides water to more than 800,000 residents in Louisville as well as parts of Oldham and Bullitt counties . Additionally, they provide wholesale water to the outlying counties of Shelby, Spencer and Nelson . </P> <P> The Ohio River provides for most of the city's source of drinking water . Water is drawn from the river at two points: the raw water pump station at Zorn Avenue and River Road, and the B.E. Payne Pump Station northeast of Harrods Creek . Water is also obtained from a riverbank infiltration well at the Payne Plant . There are also two water treatment plants serving the Louisville Metro area: The Crescent Hill Treatment Plant and the B.E. Payne Treatment Plant . In June 2008, the Louisville Water Company received the "Best of the Best" award from the American Water Works Association, citing it as the best - tasting drinking water in the country . </P>

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