GS, That is great to bring that post link back so that everyone reads it. It is very important for everyone to own one water filter with extra filters. Water was a problem here but look at Puerto Rico, they may not have water or power for three to four months. We can’t live without water! I lost in four days three pounds because I was drinking more water that I have in a long time. It was hot and there was a lot of work cleaning up so you need three to four times the amount.