We have a little hand pump that we can hook to the water pump, we will not run out of water. And if we get flooding, I forgot to mention, we made sure our sump pump is working.
I have a water purifier and one of the ones which is supposed to filter even small bacteria but I have never been in a position to where I needed it.
Our creek water is clear but of course I would never trust it to drink without being treated. What I was prepared to do was filter it in one of the inexpensive filters which only filters out solids then boil it for 5 minutes. I think they say 10 but I can’t imagine anything going through both the filter and 5 minutes of boiling.
The last hurricane, I didn’t need any of my preparations. We simply had enough potable water saved.
If worse got to worse we could always drive over to my Grandfathers old house. It is abandoned but kept up. He had a pitcher pump. You have to prime it but it will produce all the clean water you want. You just have to pump.