Many diseases and conditions are spread by not washing hands with soap and clean, running water. If clean, running water is not accessible, as is common in many parts of the world, use soap and available water.
Riverdale covers about three square miles in area. It has one of the highest elevations in New York City, affording it views of the Empire State Building, George Washington Bridge, Hudson River and New Jersey Palisades.
Riverdale is a city in Scott County, Iowa, United States. The population was 656 at the 2000 census. Alcoa has a giant aluminum rolling mill in Riverdale that employs about 2,000 people. The city site is surrounded on three sides by the far larger city of Bettendorf, and on the fourth by the Mississippi River. Bettendorf, in turn, is one of the Quad Cities.