Here are some facts and tips:
The amount of water consumed varies depending on the activity. It is important to be mindful of water usage in daily activities. 

For example, washing hands typically uses 2-12L of water, while brushing teeth uses 3-8L.  To flush the toilet, use 200-300 L of water. When filling the bathtub, be mindful of water usage. Remember to close the faucet when not in use to save water. When brushing your teeth, use a glass. Use the double flush of the toilet. Take showers.