Drinking water from the streams in Norway is one thing ... but in Denmark, that's a difference. Denmark is completely flat and with lots of farm land. In general, not a good idea to drink water from rivers and streams that are going through farmland ...

First time I met my wife, back in 1998 ... she reached out to me as I had an ad offering hospitality on the Internet, but she also had two friends along, they slept in Frognerparken (more well-known as "the Vigeland park" among tourists) and was drinking the water from the stream there. Now, that's a very urban stream, it's coming from Sognsvann, a relatievely small lake, and also one of the most popular bathing lakes in Oslo ... and then passing lots of roads and gardens on the way down to Frognerparken. I think I did drink one cup of coffee, though I somehow don't think it's much healthy.