Here are some excellent sources to help get you started on your own water-saving mission!
Water Footprint Calculators:
Environment Canada (Requires Registration)
National Geographic (United States Only)
Water Footprint Network (Quick)
Water Footprint Network (Extended)
Water Saving Tips and Tricks
Environment Canada's List
Wisely Use It! 100 Ways to Conserve Water
A Water Conservation Game for Eco-Friendly Kids!