Mineral water!

I was watching a talk show on an entertainment channel. The guest was great social-worker Medha Patkar. The host was asking her about her work. In between he asked why did she refused to drink mineral water before the show? She said, I hate the mineral water! Then she started explaining what she meant. This mineral water companies get water from underground. They soak the underground water which is the reason it is decreasing day by day. The government charges them only 50 paise per litre of water and how much do they take from us? Rs. 10 per half litre that means around Rs.18-20 per litre. Whats the percentage of profit? Just calculate. This was the explanation given by her.
I had once been to a mineral water plant in my school days. There I had seen the purifying and the filling process. There was a very big metal purifier and there there where small cabins where the packaging was done. I saw how the plastic bottles were made. There was small plastic test tube. Air was filled in that test-tube and given the shape of the bottle. It happened in minutes. From this we can actually make out that it costs so less to prepare these bottles. There is more than 100% profit in this business.
Medha Patkar had also said that actually water should be sold free. Even if not free it should be sold at minimal rate. Even at home, we get water 24*7 for very less price. So why do these companies charge so much? Time to think!