I grew up in South Louisiana, where there's a body of water in smelling distance pretty much wherever you go. Most of it you wouldn't want to swim in, due to the snakes, alligators, sinkholes, and bacteria. My brother and I got impetigo many times from playing in the canals, despite parental warnings.
Because there are so many bodies of water there, and because boating and fishing is such a big part of the culture, our parents made us take swimming lessons at a very early age. I hate swimming, but I can stay afloat.
I remember hearing, as a kid, that our city park pool was closed and filled in with concrete due to segregation issues. Later I was told it was done because some kids climbed the fence and drowned when there were no lifeguards on duty. I don't know which story is true.