Question

Information on the cost per litre of purification of water

Answer 1

By installing RO machine you will be able to fill 1000 liters per day. That will end up resulting in your earning of Rs 2 per liter 

Answer 2

Piramal Water Pvt Ltd, is a private company which supplies purified drinking water under the brand name, Sarvajal. It supplies water in 154 cities, towns and villages in Rajasthan, Gujarat, Uttar Pradesh, Madhya Pradesh, Haryana, Delhi and Maharashtra. It charges Rs. 30 for 60 litres of water being delivered to the doorstep.

Waterlife India Pvt Ltd sells purified water in eight states at Rs. 5 for 20 litres, or 25 paise per litre.