I&#x27;ve recently moved to the US and cannot bring myself to drink tap water. Even though I consciously know that it should be safe, it is as if I was trying to drink water from the toilet. Years of living in a country with untrustworthy tap water do that to you.<p>Now, the way it is usually done in the US is very wasteful. I mean, packs of bottled water at CostCo? We used returnable 5 gallon containers...