Cats are very anti-water. Not to say that cats will deliberately keep themselves thirsty. A cat will happily drink enough water to sustain itself for hours. But they will not go out of their way to drink water unnecessarily.
Most cat owners would be ignorant that even their lovely pets need clean water that helps maintain their dental hygiene while ensuring proper hydration. Lack of proper water hygiene can lead to rotten teeth or dental diseases and other problems like digestive issues, diarrhea, and other diseases along the line.