1. I consider to save water, we have to take shower in few minutes like 2 - 5 minutes. Also take shower 4 times a week and when we take shower turn off taps. Use little soap for lasts less.
2. Another good option its to put a bottle of water inside the tank for that each discharge has less water consumption in this way and using these two tips you and your familly can reduse the consumption of the water.