No matter what food you offer your cat - dry or wet, it should have access to clean water throughout the day.
Filling a bowl with water and leaving it for an indefinite period of time is not an option.
You should take care to change the contents of your cat's drinking bowl at least twice a day: in the morning and in the evening.
If you notice, for example, that a piece of food has fallen into the water, you should not wait until dusk: instead, change the water right now.
By the way, you should use the same water for your pets that you drink yourself. It can be boiled or bottled.
Tap water is only suitable for drinking by animals if filters are installed in your apartment.
Finally, a few words about water bowls.
There are no special requirements for the materials for these products: they can be either glass or made of ceramics, plastic or metal. The second option is still optimal - it does not get scratched like plastic, and does not chip like glass or ceramic.
