To grow 1kg of rice we need nearly 3000 to 5000 liters of water but to grow 1kg of millets we need 300 liters of water.
This is how we exhausted our water, we are the responsible for water scarcity. So to save water lets go back to the roots and start eating healthy food.
And even to 1kg sugar we need 5000 liters of water, so lets stop using sugar. Other than sugar start using palm jaggery.