Depends.. why do you think your pup needs more water? When we first got our first pup I used to be worried that she drank what seemed like very little water, but she drank when she wanted and never had any issues. I'd suggest you just make fresh water always available, in the same spot, so your dog can drink anytime she wants. If you are really concerned, if she doesn't drink at all, see your vet. She might have a health issue..
Other than this, you could try putting a flavored powder or a few treats in the water, as was suggested already.
Best of luck!