Confronted with more and more water consumption, what else can we do other than keep on looking for the water resources? The Waterloo City , in Ontario Canadian, kept using the underground water, but now there is none left. To satisfy the water requirement in the future, they used to plan for a water tunneling project, but it was concluded by the cost. That's why they try to find another way. They started to save water. After three-years' hardworking, per capita water consumption has dropped by 15%. Ontario spreads their experience and makes certain that there will be no more water consumption increase in the following 20 years.