My cat takes his water dish, a plastic, vertical sided bowl and uses alternating paw swipes to splash the water onto the floor and the sides.

IF it's a fresh bowl of water, he drinks from the bowl, if the water sits for a few hours or over night he'll do the splashy part. He'll move the bowl clear across the tiles, 3-4 feet at times.

I have to be careful at night, I have stepped into/onto the bowl, almost falling or turning my ankle.

When he wakes up from a nap he grabs a dry food snack and then goes to the water.

As far as the amounts, it's hard to say, most of the water ends up on the floor.