Be aware of how many water you are using.
2 Flushes of toilet water = 18 liters
4 min shower = 40 liters
Washing your face in a basin = 3 liters
Brushing your teeth = 0.3 liters
Hand washing a small load = 9 liters
Hand washing a small load dishes = 9 liters
A Cooked meal = 0.6 liters