At my wits end! Cat peeing in the water bowl

I would use a raised water dish. All the animals can reach it (even the cats) but the cat would have a hard time peeing in it since it up in the air. I use plant stands for my dogs dishes. Much cheaper that the ones made for dogs.

I’ve had two cats who liked to pee in tubs, their “mess” all went away. Rather clever of them.
With that many animals, and you seem to be dedicated (with a potbelly pig that qualifies you) I would put in a small sink under your bathroom sink and buy a motion detector faucet. A pump for the drainage to meet your U pipe seems like it would complete.
The point is that there would be no standing water to pee in, but water always available on demand. Speak to your plumber.

Hey Punkie, I know your post was some time ago, but I recently purchased a Bengal kitten who does the exact same thing! Were you ever able to stop you cat from this, shall we call it bizarre, behavior? I AM about to lose my mind! My two other kitties, a brother and sister at 10 yrs old, are not amused by his peeing in their water!!