Earlier quoted context omitted.
You have to boil the water which does in order to make beer and wine (and spirits).
Beer (wort, at this stage) is heated before fermentation, normally not boiled but enough to kill bacteria. Wine is normally made from pure juice, and isn't heated at any point in the process. But again, it's made from pure juice: the inside of a grape is not a usual place to find dangerous bacteria, and on the outside one would normally find only the yeasts which produce the fermentation. Modern wine-making washes th…
Grape juice for wine, as it can’t be heated without ruining it, is usually lightly sulphited for a day or three before adding yeast, which kills the bacteria present in the juice.