Is a floor drain and a separate water pipe possible?

What an unfriendly and unnecessary comment from you.

did not write a single unfriendly word, merely reported that his cats were given water in a bowl. A bowl in the kitchen and running water where it is now would also be an option. Then the cats always have water and often running water as well. Alternatively to a drain, a pump could also be useful.

Right. He certainly didn't mean to imply that the bowls do work and that my idea is silly. How could I even think something like that. Of course, we have an extra bowl in the kitchen for safety, but no one drinks from it.

What do you mean by a pump? I don't want to go back to a regular drinking fountain.
Yesterday, I was also thinking whether you could place a sink on the floor. A small one made of natural stone, for example, not necessarily one of those white bathroom ones. :D The ones I've seen are usually mounted on a wooden board, for example. My question is whether that is possible at floor level, or if the water drainage wouldn't work then.

I would probably install a basin, something fancy in the hallway. So a kind of fountain with a natural stone basin. It could also be one of those misting/humidifying devices. It could drip via motion sensors. And there would also be a drain.

What you imagine is certainly possible. Just ask your [GU/Bauträger/Architekten] :)

Personally, I probably wouldn’t do it that way either. Either in the guest bathroom – possibly with a flap – or a closed system that I refill fresh in the morning and evening.

Pump variant 1: closed loop. The water flows and needs to be refilled after consumption. With a corresponding reservoir size, this is rare.

Pump variant 2: The wastewater is pumped to the level of the existing drain - just like with a dishwasher. This eliminates the floor inlet.

Another variant: The water flows into a basin or stone trough (surely looks better). The inflow triggered by the cats is switched off at a certain fill level. Then you don’t need a drain and are protected against flooding.

My question would be whether this is possible at floor level or whether the water drainage would not work then.

I agree with the suggestions of , but I still don't want to leave you starving for a simple yes/no answer: yes, it works. The floor drain doesn't care whether it serves a barrier-free shower or a (self-refilling) drinking bowl.