Jase- It was the link on Iain's post this morning. http://inthelongrun2013.org/ It makes quite a read. Don't know about the tap water, but the big jugs a beer me and Iain had at the pub post Berlin Marathon last year went down a treat and from memory of the 2012 Berlin forum Johnas was on the Jagermeisters
Johnas' wife bought the Jagermeisters as a present.
I like that you can get the jäger in little bottles to drink en route