A lot of people in those old buildings are going to have water and sewage coming up their drains and toilets.. And not just the first floor either.
That's my next fear after the roof, but I am at the top of a village house and we haven't had problems before aside from a very big clog that needed to be manually removed.
Also I am by a hillside but it's pretty stable. Another slope in the village collapsed a few years ago after a big storm and was cemented over, replacing beautiful but dangerous green hillside with cement
Busses aren't running so my wife can't get into work. People who made it in say the dogs are OK though. Streets are flooded but indoors are fine
Edit: Finally seeing some footage this morning and holy shit what a disaster! This will take days to recover from