1. Try placing more bowls of water around the house. Cats pay attention to unusual things, so try putting various types and shapes of dishes/bowls filled with water around the house, and in unusual places, like behind the sofa, under the sofa.....you get the idea. There're more chances your cat will be tempted to try the water if she keeps 'bumping' into them.
2. Try distilled drinking water. My cats prefer that to reverse osmosis water and they absolutely detest mineral water.
3. Try running water from the tap if your water is filtered in your home (don't attempt it if your water is not filtered). One of my cats simply love to jump up onto the kitchen sink, turn on the tap himself (it's those handle levers) and drinks from the running water.
http://blackie007.blogspot.com/2009/...ed-handed.html
Or, get those fountain bowls (picture attached below).
4. Try adding flavour to the water.....sometimes I add a bit of tuna juice to give variety.
Good luck.