it's not rocket science II

One of our readers, RP Singh of Janakpuri, wrote back to us: The only question that always bothers me , why do we use drinking water in our toilets? Can't we use sea water instead? When we can carry human waste to the sea, why can't we bring sea water to our toilets? Why does our govt spend crores of rupees on cleaning up water for us to drink, which we just flush away....We drink one glass but waste 20 litres every time we answer nature's call.....