1. Recycle water by using collected water that has been used to wash fruit and vegetables, then water the garden withe this water.
2. Uhhh, at the toilet, it doesn't hurt to remember this: If it's yellow, let it mellow. If it's brown flush it down! ;]
3. Always turn off the taps when brushing your teeth or when shampooing your hair in the shower, this saves a lot of water and not let it go to waste.
Saving a little bit everyday, goes a long way.