Guyana and Suriname are known to have the purest drinking water deposits in the world. For the rest of the continent I'm not quite sure.
The strip of water at the tip of South America is known as the 'strait of Megellan'.
The south Pacific
yes
Canada is in North America and does not share a border or any bodies of water with South America anywhere.
It is in-between the continents of north America and south America however I would say that it is in the north Americana continent.
The body of water separating North and South America is the Atlantic Ocean
The Amazon River and its water system covers much of northern South America.
Gulf of Mexico!
The Panama Canal.
Europe, Asia, North America, South America, and Africa are not completely surrounded by water (Although if counting the Panama Canal and the Suez Canal, then North America, South America, and Africa would be completely surrounded by water).
South Atlantic Ocean
south america