Many people fill a dish with water for their cat and leave it on the floor. While this can work, it often results in stagnant water that tastes awful. In such cases, cats will often find other sources of water such as drinking out of the toilet.
To provide your cat with fresh, clean water at all times, consider getting a drinking fountain. Such drinking fountains circulate the water so it stays fresh. In addition, many fountains include filters so your cat gets clean water that’s even better than ordinary tap water. In fact, these filters work so well that you might want to get a drinking fountain for yourself.