Re: Drinking water tank water.
One of life's major ironies is that we carp and complain about gas at $1.50/liter - a product that requires a lot of costly refinement and production, but happily pay $2.00/litre for water in a plastic bottle... esp in North America and other places with good water supplies, to say nothing of the environmental burden of the bottles..
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)