I was being dead serious. A good espresso machine is a big investment and I think it&#x27;s common for people to use bottled water in them when the local tap isn&#x27;t ideal for taste or machine health.<p>I can imagine that kind of tap water being extremely frustrating. I&#x27;ve been very satisfied with the tap water everywhere I&#x27;ve lived, but it sounds like I&#x27;d be a bottled water guy in Copenhagen.