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.
While the more recent Archie comics have been deliberately vague about Riverdale's location, it was not ambiguous in the earliest run of the comic. In Jackpot Comics #5 (Spring, 1942), written by Archie's creator, Bob Montana, the story has the gang going on a river trip.