Pissing in a fountain was completely justified, in a sense of historical accuracy, body excrement is universally considered foul and unholy.
Well, we'd hate to interfere with historical accuracy and reduce verisimilitude. Especially when the crimes these characters have likely committed clearly would have the result of incarceration if we're applying late middle ages/early renaissance concepts of crime and punishment, right?
Of course, no prison would be complete without a curative fountain in its courtyard. I'm sure the first thought of any reasonable society on discovering miraculous healing waters would be "let's build a prison around it to house the worst our society has to offer".
And clearly the use of bodily fluids to desecrate things such as a fountain is borne out by results such as the continued effectiveness of the fountain's waters in healing wounds. And what historically accurate character (especially dwarves who, as we all know, abound in historical renaissance Europe) would not immediately think to force the befouled waters down the throats of his wounded fellow escapees.
Really, to each his own, and blowing off some steam with a bit of low brow humour can be fun from time to time. But let's not try to justify the grade school humour as necessitated to preserve the "historical accuracy" of a fantasy RPG.
Unrelated to the above, that is a beautiful map, Gary.
Is Talingarde in any way derived from the old Telengarde computer game? Boy. that was a lot of years ago - and speaking of juvenile humor, if one removed the disk, then saved the game, it broke the code and one could rewrite the Basic program to revise the game's standard descriptions.