Try a different kind of bowl because with the metal bowls they can't see the water level very good, so maybe he's tipping it over to get water. We have a plastic bowl for our cats.
Try citris oils with the orange scent you should try that the cats don't like it but I find it smells beatiful you should get a natural one from a health food store.
Okay, I have this almost 5 yr. old feral cat, my mom, brother and I have had her ever since she was born considering we rescued her stray mother, who was pregnent. We have tried to tame her a few times but it hasn't worked. We have not had the money to get her spayed, but now we have the money...
