we use a fountain so water additives don't work well anyway.

Pros: none

Cons: not necessary

It helps them alot. More vitamins and nutrients and all that just by drinking water.

Pros: Increased vitamins and minerals

Cons: None

Grew up on NYC water and it was delicious. Not so good in my town especially because we have a severe pollution site nearby.

Pros: NYC has the best

Cons: My town does not

I give my cats good ole tap water and its not nearly expensive. Why buy water when you can get it out of your tap at home.

Pros: n/a

Cons: To expensive

Its available and apparently safe so why spaend more money and glorified tap water

Pros: Safe and economical

Cons: Turn it on and its there so none