I concur with the previous posters, use the water in the tanks for showering, cleaning and for boiled water (coffee, pasta and the like) but get bottled water for drinking and for making ice. Just don't make the mistake I made (and others probably have, too) of boiling pasta in sea water. I thought I'd save some water and salt and use sea water instead; that was not a good idea at all the fish got my over salted capellini and I had to start over with fresh water and just a pinch of salt.