The water makes it less likely for waste to stick to the dry surface and accumulate, and also reduces odour. Splashing is more of an unfortunate side-effect of that design choice.
I've even been in toilets here where I had to take measures not to have my genitals end up dipping in it.
I've even been in toilets here where I had to take measures not to have my genitals end up dipping in it.
That's a bit too high, however.