We all know we need to encourage kitty to drink water, just as we know staying well hydrated is good for our own bodies. As felines age it becomes crucial to their kidney and urinary tract health that they drink enough fresh water every day. I've often suggested placing water bowls in the bathroom, which I find is many cats' favorite spot to drink. Be sure to use a china or pyrex bowl that gets washed frequently and never use plastic for water or food. I love the kitty theme bowls you can buy at Uwjimaya.
Here's a good article with more information on this topic: