Given the prevalence of waterborne disease there's a
reasonpeople avoided water, and drank ale/beer for so long.
Then you'd be
wrong. I suggest you study the history of water supply, in London and elsewhere.
Water isn't the problem,
clean water is.
Do you know when the first water filtration system was installed in London's water supply? 1829. This was the
world's first treated public water supply, installed by James Simpson for the Chelsea Waterworks Company.
BTW that company only supplied one part of London.
Mandatory treatment was implemented in 1856, mainly because of John Snow's work on the 1854 cholera outbreak. Again this was a world first.
Your'e looking at this from the perspective of someone with easy access to clean water and a range of safe, effective, cleansing productions. This wasn't the situation for most of history.
BTW if anyone's interested in the history of antiseptic surgery in the USA I recommend you look at the life of genius surgical pioneer, eccentric and cocaine addict
William Stewart Halsted. (
Wiki)
Imber's book (
Genius On The Edge: The Bizarre Double Life of Dr. William Stewart Halsted) is an excellent recent biography. Halsted was, frankly, an odd man but he was quite probably the most important person in US medical history, pioneering proper training, anesthesia, antisepsis, animal experimentation, blood transfusion and the use of rubber gloves.
He was the first person to perform an emergency gallbladder surgery (cholecystotomy). On his mother, on the kitchen table at 2AM.